2 Stroke Only Runs On Choke.
But oftentimes a leaf blower will develop an issue where it will only run on choke and as soon as the choke is turned off the leaf blower either shuts off or loses power. He will cup Hawks's cheek, stroke his cheekbone. Scooter runs but is very slow. It’s a 2 stage snow blower. 3 Wiring diagram 5. Pilot Jets: 2 stroke Concentric and MKII (also used as choke jets) • 124/026 in sizes 15-up in increments of 5cc flow (15 would flow 15cc per minute). Two-Stroke Engines Work A two-stroke engine has the potential to produce twice as much power as a four-stroke engine of the same size. The next day it wouldnt run so I cleaned the carb again, the plug and filter looked good, and i checked the compression and it was 90 psi. She starts right up with the choke - idles a little slower for about 2 seconds and then picks up speed and stays stable. Mostly due to crusty carburetors or misadjusted speed screw settings. On a two stroke the reeds generally block it ends up sounding more like an "umph" than a bang. It had been put up for a while ( a few months), it wouldn't start when i went to get it out. Some times a back fire into the carburetor will blow a pressed-in BB out of a drilled passage way. Put the vehicle up on its center stand. buy a $11 external a/f screw, put it about 2 turns out, and a 160-165 main jet. I have a perfectly running bike just like it, so I swapped the carburetors, thinking that was the issue. firing order is 153624. Problems: Runs great the first 5 times. Allow the engine to run 5 seconds. 2007 Yamaha outboard 4 stroke will not idle and engine dies. Here are some suggestions before taking it in for a tune up. While listening to this noise, turn the needle valve back to the left a quarter turn. Don’t set it too high, as this will cause causes excessive clutch and brake wear. You are gonna get the biggest problems with 2 stroke carb boat motors giving you crankin and running problems. When the engine runs for about 5 mins it loses compression and shuts down. Put the vehicle up on its center stand. by Craig Kirkman For more useful information please take a look at my website: https://www. As this valve opens, air flows into the carburetor and mixes with gasoline. September 6, 2016 at 4:20 pm #5184. Set the choke open. Does the choke slider go down fully when the cable is released? Do you know if the crankshaft seals are good? It may be worth seeing that the correct jets are fitted in the carb. Lawn mower engines are generally 4-stroke although 2-stroke engines are available. Your symptoms are exactly those of a clogged carb. So cold, a good percentage of the gasoline is in liquid, rather than vapor. Are you starting the unit running full throttle , if it’s inverting the motor runs slower and dies when cold when it’s cold it takes a little time with the choke closed to warm up. The does not work well on the 2 cycle 1980s models. Will only start and run in choke position #2. The diaphragm is stiff and must be replaced. It revs up good then it starts spitting and sputtering as it goes up against the governor. I have a 2008 or 2009 Mercury 4 stroke 9. I pulled the BBs and cleared the ports/plugged with set screws. Why? an unvented fuel line could prevent fuel from getting to the primer bulb if a vacuum has formed inside the fuel tank. When he gave it to me, he said it would start but promptly die. « Reply #2 on: September 21, 2010, 12:29 ». There is no mixture control needle on my carb, only an idle stop adjustment. 9 2 stroke last night. This happens just before the piston reaches TDC. Only then can I close the choke and it will idle around 1,000. I also had the same problem after about 10 or so uses. The problem now is that it only runs with the choke fully closed. 05 YZ250F Only Runs on Choke. It had been sitting a while so I cleaned the carb and it was good to go. Awesomesilverado. No! Not neccesary In older bikes, Choke are kept engaged all time, Engaging choke makes air fuel mixture much richer so that engine could start easily… Disengaging it while riding in old bikes(2000- 2006) will stop the engine since air fuel mix be. no choke lever. Stroke 1 : Intake and Ignition. I haven't done much riding because I don't want to scar the engine from running too lean. While there are a number of reasons why an engine may suddenly develop a "runs only while the fuel is manually enriched situation", the three most common reasons would be:. Carburetor W/ Air Filter 2-Stroke Yamaha Jog 50cc 90cc Scooter Electric choke. Sounds like it is running on only 3 cylinders. Upright, sideways, even upside down – the Mini 4-Strokes will still run great. Carburetor W/ Air Filter 2-Stroke Yamaha Jog 50cc 90cc Scooter Electric choke. Two strokes clear with three holes to play at Winged Foot, Mickelson found only two fairways out of 14 on the day and before running up a double-bogey six. 3 Wiring diagram 5. You will have to open the choke to get it running again. If I start it and put it in gear as soon as the advanced idle period ends, I can run through the midrange and at WOT no problem. Had 2 four stroke motorcycles, nasty if you dropped them when they were hot, hated them. make sure your electrothermal valve is set to the right position. Turn to PRI and wait 30 seconds for the bowls to fill. Snowblower engine needs choke to run smoothly. May 12, 2015 - Briggs and Stratton 13. maybe I remember rong. Some years ago had a throttle cable with a broken wire strand that caused one of the carb slides to not return properly. Trimmer: Only Runs With The Choke On. * The Charge warning light goes out when the engine is charging because +12v D. Then you can switch it to "Run" mode and that turns the choke all the way off. My Lawn Mower Will Only Run on Full Choke To understand this problem, you must understand a little about how a carburetor works. Need some help? Put your question up here. There is also a main jet adjustment screw dead center on the top of the carburetor. 6 horses Brigg’s & Stratton motor. therepairspecialistonline. Get the revs up. Also, when I get on the throttle, it will shut off unless the choke is about halfway open. Runs only when choke is halfway out. One of only two teams in any of the four major professional sports to blow a 3-0 lead in a best-of-seven series, the Pens let the Islanders off the hook big-time in their 1975 NHL playoff series. The New VM Carb has an OD of approx. 1988 Mercury 9. Crank again with throttle 1/4 open, then with half, finnaly full throttle. Leave choke in "OFF" position. Maybe you guys can help me out. Envinrude 4HP only runs fully choked. If it only runs on full choke it may have a whacked out float height or a clogged jet keeping it from getting the gas, too. If it were a little worse, your engine probably would not run under any conditions. so the lack of fuel allows the whipper snipper to idle fine on choke, and dies when off choke. Start the trimmer and let it run in choke. 8% positive. The Renesis won International Engine of the Year and Best New Engine awards 2003 and also holds the "2. This top information is for carburetors installed on Sprint, Classic and Quattro 3. When I test drove it, it would only idle when the choke was on, and I ran it up and down the street. I put new plugs in and re-mixed the gas correctly at 50:1, but now the motor won't run without the choke. Discussion Starter • #1 • Jul 17, 2012. When you push the choke knob in, the choke plate in the carb should be wide open, allowing air into the carb. #5 • Dec 13, 2010. If I hold a piece of tape over half the intake the engine runs good but without a choke is a struggle. There is also a main jet adjustment screw dead center on the top of the carburetor. This problem is usually common with Briggs and Stratton Vacu-Jet and Pulsa-Jet diaphragm style carburetors. Now I don't have to run it with the choke slightly on. Other possible causes include: Stale/Dirty Gas. Only 2-stroke scooter oil, such as Maxima scooter oil, should be mixed with 1 gallon of gasoline. Exact same problem here (with TB225). took off carb and seemed clean. If I turn the choke on with my manual choke carbs, top speed is not only affected, it's pretty much non-existant, because they will load up and not want to go very well at all. Allow the engine to run 5 seconds. your intake maybe leaking. If it starts without the choke, don't use it. I have run a 4 stroke for over 8 years, they are a bit stubborn but not as you say when cold, and its colder up here then NC!! I run high test gas with some extra gas treatment all year long. keep choke OFF. They sort of work opposite one another. Theirs no way this thing is going to handle 5 to 10 of snow tomorrow the way its running. Cup (Cutting) of firewood, I command (order) 20 cubic meters of wooden oak dimension (size) 2m of length and diameter from 8 to 40 cms. From the Start. The Marine Mechanic I'm going to connect you with knows all the tricks and shortcuts. As soon as you hear it pop (try to start), immediately take it off of choke and pull it a few more times. Try turning the choke off right away and see if it keeps running. As the 2 stroke engine animation below shows, a two-stroke engine in its purest form is extremely simple in construction and operation, as it only has three primary moving parts (the piston, connecting rod, and crankshaft). It's not smoking like a 2-stroke with a faint blue mist behind it, its smoking like a steam engine train lol. The valve adjustment will do wonders if they are tight. It only runs with the choke. A dirty air filter not only flows less air to the carburetor and engine, but it’s more likely to allow dirt pass by and reduce the lifespan of the engine. This is frequently set at 1 full turn out. It will now only run in the mid-level choke position and runs at about 3/4 of normal high rpm. My R6 developed running issues, and found 2 mixture screws 2 turns out, 1 was 3. 156″ alcohol • 2622/059. Here are the fixes I've tried so far: 1) I drained all the fuel and put new in. Now, I just repaired it. The engine runs fine if you will apply almost full choke, butterfly barely open. It's not an uncommon problem! There are two things to check. First, when it comes to starting 4 stroke outboards, an EFI engine has the advantage. The issue that I am having is that when I fire up the bike with the choke on, it seems to run pretty good. Faulty auto choke. Twist the throttle once or twice, find the compression stroke and kick. Then, start it up normally, and see if it will now run without the choke being wide open. And, diesel, rather than gasoline, is a much better match with the two-stroke cycle. The bike had ran fine for the first 2 months after I bought it, but gradually got worse for some reason. Wheelhorseforum. Starts 1st kick or won't start at all. Try with it in the water (or a big garbage can/tub) and see if it's any different. The custom electronic ignition module is completely encased in a strong aluminum cup mount pre-installed on the back of the engine. It has no power, even though it had power a few months ago when it was running. The motor was running great, but this weekend the motor wouldn't run right, i think i had the wrong mixture. pull out) the black starter knob (choke). Also the gasoline used in the mix should be fresh 87 octane gas. The next time I took it out, it would. The Renesis won International Engine of the Year and Best New Engine awards 2003 and also holds the "2. Thanks for watching!!!. ok so the needle valve o ring is good and the plate is right side up, double checked with service manual. If the tractor is operated at 1/2 throttle, the engine will run for about an hour before the problem returns. Dirty Air Filter. I don’t see a way to tune the carb other than the one brass screw on the top of carb. Fresh fuel and oil. The only other way to kill a run away is to cut the air intake to the engine. The next day it wouldnt run so I cleaned the carb again, the plug and filter looked good, and i checked the compression and it was 90 psi. Don't throw the old one away: if the new one makes no difference, put the original one back in and keep the new one for next time. An internal combustion engine needs a precise mixture of fuel and air to run properly. You lost your manual ? There is areference mark on the housing and mounting ring. There are no adjustments on the carb, other than tickover speed. Get shopping advice from experts, friends and the community! My Tiller is only running with the choke on. Only a few possibilities if it runs about 75 % of full throttle 2 stroke engine only runs with choke on here s. Re: Lawnmower Engine Can't Throttle on Choke. A rare trimmer symptom is when it works, but only when the choke is on. Chinese 2-Stroke Carburetor Version 2 This Chinese 2-stroke hand choke carburetor is known to be the replacement for most Chinese pocket bikes. 3)New Spark Plug. In all seriousness, 3 to 5 minutes to warm up with the choke on shouldn't do any damage. Pull the starter rope handle sharply 5 times or until the engine starts. Re: Engine only runs with choke on. 9 cc - compression ratio 8,65 : 1. Hi I Have A Problem With A 2002 Wr426 In That It Will Only Run And Start On Choke Have Tried All The Normall Idears Clean Car Even Put A New Piston In All Looks Ok Has A Fmf Pipe When Starting On Choke It Starts Fine Runs For A Fee Seconds Pops Back As To Lean Then Dies This Will Do This A Few Ti. Two-Stroke Engines Work A two-stroke engine has the potential to produce twice as much power as a four-stroke engine of the same size. You will need a carburetor cleaning solvent, some heat source, air compressor, and a wire or some other thin long thing. Regards, JWP. I am not professional, I am going to use 20 liters of running a year maxi Motomix. The damaged cable was between the 1-to-3 cable splitter & a carb. Troy bilt is garbage. Duvall, WA PNW. it seems to only run if the choke is on. If the top end is only affected with the choke on, you're too lean on the main jet. 9 short shaft on it. Don't throw the old one away: if the new one makes no difference, put the original one back in and keep the new one for next time. This engine was called the model 947, with 951cc, 2-stroke, oil injected, reed valve induction, variable exhaust pipe tuning via their RAVE technology & water injection. This happens just before the piston reaches TDC. Crank with the ignition again, it will start. buy a $11 external a/f screw, put it about 2 turns out, and a 160-165 main jet. I have an air leak somewhere. I tried to set the slide screw thinking it was to low, didn't help. Trikes all makes and sizes. 08-11-2011, 08:33 PM. Follow our repair guide to help you better identify and fix your problem accurately. The main problem I found was that the choke on/off that is molded in the cover is backwards, When it says off it is actually closed, No wonder it ran great with the choke "on" - Apparently the on & off was lost in the translation. It's a 2 stage snow blower. My 18hp Johnson is not cooperating with me. Some times a back fire into the carburetor will blow a pressed-in BB out of a drilled passage way. When the choke of a leaf blower is engaged the carburetor supplies more fuel to the engine, therefore, making it easier to start the leaf blower engine. Easily cut through an array of materials with this rugged gas powered chainsaw from Stihl! Features: - Brand: Stihl - Model: MS 362C - Chain size: 16 - Displacement: 59cc - Gas powered, 2 stroke - Pull to start (appears to have a stiff pull and smooth recoil. Does your car idle poorly, have a rough idle, or in general have an idle problem? Learn how to fix a car with high or low idle, and learn how to fix a car that idles up and down by cleaning the idle air control valve. hello , I have a Ryobi 26cc 2 stroke fresh gas cleaned carb and everything else only runs on half choke. Seems to be pretty new. Two Stroke Engines How a two stroke engine works. when you pull the choke on, what you are in fact doing is decreasing the amount of air, and therefore increasing the amount of fuel so, as mentioned, you have a dirty/blocked carby, or quite a bad air leak in the manifld/gasket more than likely carby rebuild though, pretty simple thing if. It might have not been stored correctly but I've disassembled the carb a bunch of times and blew. The RC Ignitions G62 Conversion is a standard Zenoah G62 2-stroke gasoline engine that has been modified with electronic ignition, a custom cup mount with integrated ignition module and a few other minor modifications. Some times you may get away with adding fuel injection cleaner to the gas, but not if the gas has been sitting for more than about 4 months. The diaphragm is stiff and must be replaced. The bike had ran fine for the first 2 months after I bought it, but gradually got worse for some reason. (Re-jetting and tuning may be required). You want to turn the screw on the right about 1/8 of a turn COUNTER CLOCKWISE. it should start withing 5 seconds or so. Since your new to this , first PODS suck makes it hard to tune and requires experimenting with jets. A two stoke engine fires at every revolution. So here comes our first suspect, the carburetor. As soon as I full my 2 stroke blower only runs on idle or full choke. You can not restart the motor unless you raise the choke lever, then it. They are both flat head screws. Remove the carb, then remove the float bowl and main jet. 6 L engine, but only for the matter of giving awards. Ok -- I posted a while back about this motor in the other section and noticed its the wrong section anyways. Apr 2, 2016. Oil got low, so I added 2 stroke oil I found in a marina when I was gassing up that said on the side that it was fully synthetic 2 stroke oil suitable for auto injecting Sea Doo engines. The LC version part number is NLA at Fowlers, BUT COVER, PLUNGER CAP 132-14173-00 which is a RD50M or SR250 part looks like it will do the job, I am having my choke plunger serviced by Rob - Zed1, (see the sales forum) so I have ordered the above part, fits like a glove, I am going to use it, its got to. Carburetor description: 2 stroke carburetor Fuel shut off valve Mounting holes: 38mm [1. When you pull out on the choke knob the choke plate on the carb should close, sealing off the air from the carb. not saying he is wrong, but not all motors run on a vented system. Here are 10 reasons and fixes to help prevent lack of fuel to a 2-stroke engine. If the tractor is operated at 1/2 throttle, the engine will run for about an hour before the problem returns. The main problem I found was that the choke on/off that is molded in the cover is backwards, When it says off it is actually closed, No wonder it ran great with the choke "on" - Apparently the on & off was lost in the translation. I've had the carb off and cleaned it (though, oddly, I couldn't remove the main jet which is held up in place by a plug in the top of the float chamber. Inspected reeds good. This is common after the break in period. Nubs Cartaholic - V. When it's running, it seems to be fine. Repost from Tools: Brand new generator won't run without choke o. This will force the b-12 through all carb circuts. Twist the throttle once or twice, find the compression stroke and kick. I'm thinking 44DCNF may be right about it running too lean. have a good one guys :). Some years ago had a throttle cable with a broken wire strand that caused one of the carb slides to not return properly. buy a $11 external a/f screw, put it about 2 turns out, and a 160-165 main jet. Aug 24, 2012. Stihl TS350 Super Gas Powered Concrete Saw SKU#233393A Shipping is not available for this item. January 9, 2007 at 3:26 pm #520199. If I keep on the throttle a little i. One thing I did find was the float to carb body was set with the space of a 1/8" drill bit, well thats what I used to make sure I kept the reference, just in case. Oil got low, so I added 2 stroke oil I found in a marina when I was gassing up that said on the side that it was fully synthetic 2 stroke oil suitable for auto injecting Sea Doo engines. I have taken the muffler off & it was well choked up with coke but after cleaning it's still doing it. You choke it and pull it until you hear it 'pop' (a sharper sound than it initially makes). 1 2 Stroke Only Runs on Half Choke Winnie Wambui Articles. 0 Dislikes 0 Likes Report Re: choke while running by Roger Lee » 3 years ago. Worked for The Boat Doctor for 4 yrs. This it what I do and the high reving goes away. If it only runs on full choke it may have a whacked out float height or a clogged jet keeping it from getting the gas, too. Capacity 24. You lost your manual ? There is areference mark on the housing and mounting ring. therepairspecialistonline. Place the choke control into the on position. Kits may be installed easily on Mikuni TM and VM Series carburetors. Sounds like it is running on only 3 cylinders. I did a search of the site and most guys seem to have the opposite problem, that is engine won't idle without the choke out, but run fine at faster speeds. That said, mine starts on the first pull using full choke and I just run it using 1/2 choke which has been working fine for me. More than that, there is too much choke and the engine will die. Problems: Runs great the first 5 times. My Yamaha cv80 does"t have an electric choke. by: macten -. The air/fuel mixture passes through, filling the exhaust system with a burnable mixture. It is a 2 stroke BTW - Don't know how many cc though. Your wrist raises the slide & springs lowers the slide. #10 · Apr 20, 2008. A choke control is a fuel and air mixture control system found on many carbureted engines. Struggles to start at about 6-8 uses. Runs pretty good and putting out 123V with it on semi-choke. That's normal for a tuned 2 stroke. For between 3,000-6,000rpm the bike would pull easily away in any gear without dropping down a gear—quite encouraging for a lightweight 2-stroke. The reason for your running rich maybe a stuck choke assembly so don’t be so quick to start adjusting the air fuel mixture screw just yet. I bought a MS 261 C (electronic management) in January, 2017. It's alot easier to tell if your 2 stroke is running rich or lean than a 4 stroke. PICK UP TORONTO ONLY. Finally the engine will start and run, But it only runs with the choke almost closed (about 1/4 open) and the foot pedal at 1 to 2 inches depressed. #5 • Dec 13, 2010. Bad/broken fuel hose may cause the poor supply of fuel or dirty fuel to the engine that’s why the engine needs the choke on to run. On full choke it runs about 75% of full throttle. Just put in fresh gas and it won't run on anything but "Choke". That didn’t work so I bought a new carb and that didn’t work. The fuel is Shell V-Power gas at a 32:1 ratio with Stihl premium 2-stroke dino oil. What else could it be ?. Don't throw the old one away: if the new one makes no difference, put the original one back in and keep the new one for next time. by bullet535 » Mon Jul 09, 2007 6:15 pm. We worked on outboard and inboard motors, not to mention me helping other buddy's with their bikes. Having dabbled with a 32cc two stroke petrol engine a couple of years previously, I found that getting a two-stroke petrol engine to achieve our club noise regulations. But, later on, I will try as some of you have suggested. The Wrong Mixture In The Gas/Oil Ratio. Nov 17, 2010 #2 sounds like a good carb cleaning would help, blow it out with compressed air and change out the fuel filter also. It only starts with the choke all the way out, at which point it revs up to 4,000 RPM unless I adjust the choke (I can go down to 3,000 but stall on anything else), and takes about 5-7 minutes to warm up. The choke is a butterfly valve that closes and "chokes" off the flow of air through the carb, enrichening the mixture (more gas/less air). Since you just got the engine done I would double check the carburetor. As soon as I give it revs the choke automatically disengages & the engine stops straight away. Got a small 49cc Motor -- ran fine one night - turned it off all was well -- next time motor wouldnt stay running without the choke on (on as in Choke CLOSED Restricting airflow). Nov 13, 2006. My 18hp Johnson is not cooperating with me. Mar 14, 2018 #44. If the engine only runs with the choke full on it means you have a vacuum leak and the engine runs too lean with the choke off. If I hold a piece of tape over half the intake the engine runs good but without a choke is a struggle. If it continues running leave it running for 10 seconds and then push the knob right in to switch it to no choke. If it runs rough after starting with the choke, Turn it OFF! The choke is intended to produce a running engine, not necessarily a smooth running engine. Four stroke concentric's have a spray tube cut straight across. Same focus issue. 5 hp four stroke” Written on: 27/08/2016 by xyMurdock463 (1 review written) I have had this motor for three years. The only thing I can think of is if the choke operates with a knob that pulls out from the unit. The only other things I have encountered is vaporlock in the fuel delivery system which takes a while to build up while running or no vacuum at all. As soon as you hear it pop (try to start), immediately take it off of choke and pull it a few more times. Our repair and symptom guide will help you identify the problem and how to fix it. I emptied the gas tank, put in fresh gas and Seafoam additive. It only runs with the choke. It has always need a little choke to run smoothly. Print view; 23 posts Previous; 1; 2; jabcb Moto GP Posts: 3763 Joined: Mon Dec 13, 2010 4:32 pm Country: USA Suzuki 2-Strokes: 69. HS 5G 4 stroke Hello, I just finished my first 4 stroke project as well and have the same problem. The most common reason a lawn mower starts and then dies, is because the carburetor is dirty. The engine runs fine if you will apply almost full choke, butterfly barely open. Don't throw the old one away: if the new one makes no difference, put the original one back in and keep the new one for next time. Images in this video are Created and Copyrighted to Craig Kirkman of The Repair Specialist Channel and no reproduction of this content is granted. 1975 evinrude 115 hp 2 stroke Not rated yet Checked compression on all cylinders 100 pounds compression has spark on all cylinders new plugs timing seems to be set. He's had this bike since 09, and it has pretty much just sat in his garage since then. It merely chokes the carbs. If your lawn mower only runs with the choke on, check the carburetor. Dirty Air Filter. 7 Unfolding 2 Wheels (disassembling) 6. The air/fuel mixture passes through, filling the exhaust system with a burnable mixture. After more experimentation I find that even If I let the engine sit for 2-3 days, it will start first pull without even using the choke. 5hp 4 stroke. Because of this, the CTIS engine eliminates total loss lubrication, reducing the harmful emissions of the engine and make it more cost-effective to run – as you only need to change the oil when required, not every time you fill up with fuel. Make sure the gas tank is vented. so they add a plate) I run two cars, a SBC and a Pontiac, both 350. So here comes our first suspect, the carburetor. This it what I do and the high reving goes away. He said his boat had always done 24 MPH and now he only gets 17 MPH. This plate is called a "choke", and it can be operated manually or automatically. So after we repaired the gas tank, the next step was to clean out and replace. Not only can dogs choke on whole bones too small, cooked bones will splinter and create an even greater risk by breaking into smaller, sharper pieces. Two stroke motors are more efficient that four strokes for a few reasons. 9 2 stroke, won't run without choke, might be running on 1 cyl? By vipermagic in forum Mercury Mariner Outboard Forum Replies: 19 Last Post: 04-26-2013, 03:38 PM. Written by Robert Van Nuck. It dosn't lean out/stall out much anymore, but getting it running when it's cold is a couple minute process standing there feathering the choke on and off and then I have to run a while with the choke lever half on. Theirs no way this thing is going to handle 5 to 10 of snow tomorrow the way its running. Smart thief, waited until it was running properly. Faulty carburetor. let it set for about an hour and it will run and repeat the problem. By use number 10, completely stopped working! I followed every maintenance direction in the manual. I just bought a 1982 Kawasaki KZ650 CSR the other day. here is an overview of how two stroke motors work. « Reply #2 on: September 21, 2010, 12:29 ». Once it is running, squeeze throttle lever to disengage the tongue and settle to idle speed. 1 Diaphragm accelerator pump. I am not professional, I am going to use 20 liters of running a year maxi Motomix. Runs only when choke is halfway out. They are both flat head screws. Your strimmer runs off a mix of semi-synthetic 2-stroke oil and unleaded petrol (40:1). If the engine hesitates, pull the choke control out until the engine regains its momentum, then push the choke control in again. Post by Fox onMay 20, 2011 at 8:38pm. now it wont. To me that would indicate an air leak somewhere in the carb, but if the gaskets are good between carb and engine, what could it be?. I know nothing about carbs, so I don't even know where to start other than it could be running really rich thus the choke is dumping too much fuel? This is a 80's 15 hp Mariner 2 stroke. Some filters are in the tank while some are attached on. As the 2 stroke engine animation below shows, a two-stroke engine in its purest form is extremely simple in construction and operation, as it only has three primary moving parts (the piston, connecting rod, and crankshaft). It will now only run in the mid-level choke position and runs at about 3/4 of normal high rpm. I replaced coils, plugs & wires, points, water pump, fuel pump and lines, and cleaned & rebuilt the carb. when you pull the choke on, what you are in fact doing is decreasing the amount of air, and therefore increasing the amount of fuel so, as mentioned, you have a dirty/blocked carby, or quite a bad air leak in the manifld/gasket more than likely carby rebuild though, pretty simple thing if. The tiller motor had a primer that you PUMPED and then the engine would fire right up. pushing in the key has no effect and you wont get any voltage out of the blue wire by doing so. One of only two teams in any of the four major professional sports to blow a 3-0 lead in a best-of-seven series, the Pens let the Islanders off the hook big-time in their 1975 NHL playoff series. Gas Line Blocked. Most all two strokes use enricheners, with few exceptions. Capacity 24. You can play with the choke and it will run but constantly wants to die, choke it and it will run for 2-3 seconds, then open it up and it will run for. If you wanna know why does a dirt bike only runs on choke," then you are at the right place. If you have a faulty choke that moves easily, or is stuck in the full position, you will not be able to run your weed trimmer properly and will have to replace the component. all is well; Original 1964 Kohler K181 engine on a 1964 864 Wheel Horse; This afternoon I went to mow the lawn. For other spots with the engine, it is useful to use the onboard manual that comes s with your specific machine or contact your manufacturer for help. i own an aprilia rs125. We rode for 15 or 20 min. I continued doing this for a while and then I took it around the block with the choke. Feb 20, 2017. Run the engine at WOT for a while to fully warm it to operating temp. But, later on, I will try as some of you have suggested. The gas/oil mix is correct at 32:1 and is only about 1 month old. Step 1: Work Safely All the Time. (Asphalt or dirt, 1/4-1/2 mile, etc. Ray French. 2)Removed carb and cleaned it with carb cleaner and installed new gasket kit (pump diaphragm, etc). Post by Fox onMay 20, 2011 at 8:38pm. The choke does not have a true on and off spot marked on the engine. The only other things I have encountered is vaporlock in the fuel delivery system which takes a while to build up while running or no vacuum at all. Only runs with the choke on. It had been sitting a while so I cleaned the carb and it was good to go. Re: 2-stroke strimmer only works with the choke open (JCB LT26) « Reply #2 on: September 07, 2013, 23:36 » Thanks - I tried that and it has improved a bit but the problem I have now is the strimmer head carries on spinning when idling and if I turn the idling screw so the strimmer head stops when I let go of the throttle the strimmer labours. I would normally recommend putting some carb. Two-stroke engines are efficient. Print view; 23 posts Previous; 1; 2; jabcb Moto GP Posts: 3763 Joined: Mon Dec 13, 2010 4:32 pm Country: USA Suzuki 2-Strokes: 69. It's alot easier to tell if your 2 stroke is running rich or lean than a 4 stroke. I am betting that carb on your bike has an enrichener. inch generally indicates an internal problem. 2-Stroke Cylinder Bore Prep & Ring End Gap. I fixed/replaced the 2 loose fuel lines and the bad Intake Manifold gasket. If I hold a piece of tape over half the intake the engine runs good but without a choke is a struggle. is applied to both sides of the bulb, not because the circuit is broken. My Mercury 3. Ran 2-4 times in Summer/Fall 2013, then by Spring 2014 THIS (as seen in. This is frequently set at 1 full turn out. Stihl MS362C Gas Powered 59cc Chain Saw with Blade Cover SKU#233749A Shipping is not available for this item. This is common after the break in period. 1 - 5 of 5 Posts. When my wife's health took a big dip two years ago, I knew I…. Bike: Stomp ACE 160. (they aren't smart enough to tech a carb. If you want to hit a draw, move your hands forward, toward the target, so they hide your left shoe. For between 3,000-6,000rpm the bike would pull easily away in any gear without dropping down a gear—quite encouraging for a lightweight 2-stroke. If the wires are connected and the taillight is working, the choke mechanism may need to be replaced. by: macten -. Since there is only the "right amount. The fuel is Shell V-Power gas at a 32:1 ratio with Stihl premium 2-stroke dino oil. The damaged cable was between the 1-to-3 cable splitter & a carb. Scooter runs but is very slow. Other than that I have to have the choke on or it immediately dies. needle should be fine, but 2 or 3 from the top should. If your lawn mower only runs with the choke on, check the carburetor. Find the side marked 40:1, add your petrol to the first line and your 2-stroke oil to the second. I am betting that carb on your bike has an enrichener. An optimal cutting result is reached in cutting hedges and branches up to 19 mm thickness by means of its 550 mm cutting length and the safety knives running counter and cutting with both sides. Stroke 2: Compression and Exhaust. In temperatures below 15°F (-10°C), additional priming may be required. Get shopping advice from experts, friends and the community! My Tiller is only running with the choke on. Re: Yamaha 30HP 2-stroke with only run with choke if you have to choke it to make it run it is running too lean on fuel and the choke richens it. Make sure the gas tank is vented. Apr 28, 2014. ? I have a Jonsered GR50 brushcutter/strimmer which will only run on choke. There are many different types of outboard motors from the simple 2 horsepower for gentle movement along the river to 300 horsepower monsters that have you shooting through the water like a bullet. Repeat, process but this time with the spark plug removed. The knob may get caught on something or damaged since it will be sticking out from the case. This lack of seal causes erratic idle as it leaks air into the pilot circuit. 7 Technical specifications 1 Tyre pressure 4. With no choke it runs, but stumbles slightly. 2 stroke engine will only run on choke. 2 is the fact that they have fewer moving parts, which decreases the constant load on the engine, allowing it to burn the air-fuel mixture more efficiently, and reach. When people just run their bikes without riding them over and over again this practice fouls spark plugs because the engine never gets a chance to warm up and keep the plug clean It's made even worse in your case cause the bike only runs on choke so the plug is probably fouled really bad. Thread starter Messages 8,931 Location New England. Are you starting the unit running full throttle , if it’s inverting the motor runs slower and dies when cold when it’s cold it takes a little time with the choke closed to warm up. 5 HP 4 stroke outboard with about 15 hours run time on it that I bought awhile back. The air/fuel screw is used to "fine tune" the pilot jet circuit. Worked for The Boat Doctor for 4 yrs. GT250 only runs on choke. The ultra-lightweight GX25 Mini 4-Stroke efficiently delivers the kind of efficient cleaner, powerful, quiet performance that you’d expect from a larger engine – but in a very compact package. buy a $11 external a/f screw, put it about 2 turns out, and a 160-165 main jet. Then you can switch it to "Run" mode and that turns the choke all the way off. I have let it run several times but I am still having the same problem. This it what I do and the high reving goes away. Easily cut through an array of materials with this rugged gas powered chainsaw from Stihl! Features: - Brand: Stihl - Model: MS 362C - Chain size: 16 - Displacement: 59cc - Gas powered, 2 stroke - Pull to start (appears to have a stiff pull and smooth recoil. 1992 Johnson 8 hp will only stay running with the choke partially closed. If the top end is only affected with the choke on, you're too lean on the main jet. Close the Choke. Sticking (or badly adjusted) float level will cut off air supply and cause flooding and stalling of engine. Lawn mower engines are generally 4-stroke although 2-stroke engines are available. now it wont. I bought a Uni-Syn today and balanced the carbs as best as I could. Ray French. Too much oil will cause the jets in the carb to block and may cause dieseling. My R6 developed running issues, and found 2 mixture screws 2 turns out, 1 was 3. When it's running, it seems to be fine. Joined Aug 15, 2005. Carburetor W/ Air Filter 2-Stroke Yamaha Jog 50cc 90cc Scooter Electric choke. Do this until the b-12 in the gas tank is used up. Maybe you guys can help me out. You can not restart the motor unless you raise the choke lever, then it. The ultra-lightweight GX25 Mini 4-Stroke efficiently delivers the kind of efficient cleaner, powerful, quiet performance that you’d expect from a larger engine – but in a very compact package. The only thing I have noticed is that if I press the priming bulb I can see fuel coming out of the jet. I would be surprised if the motor has 30 hrs on it, and I know that it has never been run hot. View Public Profile. “But usually those were short moments in the day and the asshole behaviour outweighed the nice personal moments. Re: GT250 only runs on choke. A 4-stroke engine has a crankcase or sump located at the lowest point of the engine. An internal combustion engine needs a precise mixture of fuel and air to run properly. Ray French. soaking the carburetors is a good idea,keep in mind that you have to strip the carbs from all rubber parts before dunking. let me know how you make out. I replaced coils, plugs & wires, points, water pump, fuel pump and lines, and cleaned & rebuilt the carb. ATC70 only runs choked. 3–litre by Mazda) size award for 2003 and 2004, where it is considered a 2. The ultra-lightweight GX25 Mini 4-Stroke efficiently delivers the kind of efficient cleaner, powerful, quiet performance that you’d expect from a larger engine – but in a very compact package. There is a filter in my 5L gas can, one on the fill line for the tank and another on the. Fresh fuel and self mixing 2 stroke oil at 25:1 mix sorted it. So, when your bike only runs on choke, it is because the "rich" mixture that is being burned is actually closer to the appropriate mixture. September 6, 2016 at 4:20 pm #5184. 2 Stroke Engine Running Animation Diagrams. it should start withing 5 seconds or so. carburetor. A 4 stroke bike will generally take a bit more pushishment from bad jetting than a 2 stroke because a 4 stroke bike is still getting good lubrication even though it may be running quite lean do that to a 2 stroke and your motor will eventually become a solid lump!. A "choke" blocks air moving through the carb in order to richen the mixture when cold. I just bought a 1982 Kawasaki KZ650 CSR the other day. As soon as you hear it pop (try to start), immediately take it off of choke and pull it a few more times. 1 is the displacement, they generally have smaller combustion chambers, which means less fuel burned. Please do not equip our outboard engine with gear oil. Bike Specs: Heavily modified '06 Strada rx150te chassis - MotoX handlebar conversion - '08 GY6 HP Engine Swap w/ the works. No matter whether the carb adjustment screws are turned in fully and turned out as much as 8 turns, at about 9 turns they are out. Easily cut through an array of materials with this rugged gas powered chainsaw from Stihl! Features: - Brand: Stihl - Model: MS 362C - Chain size: 16 - Displacement: 59cc - Gas powered, 2 stroke - Pull to start (appears to have a stiff pull and smooth recoil. This top information is for carburetors installed on Sprint, Classic and Quattro 3. Perfomance Upgrade Section. 185 HP 1984-1990 185hp 2 stroke 6 cylinders ; 200 HP 1983-1990 200hp 2 stroke 6 cylinders ; 20 HP 1985-1990 20hp 2 stroke 2 cylinders ; 225 HP 1987-1990 225hp 2 stroke 6 cylinders ; 235 HP 1983-1985 235hp 2 stroke 6 cylinders ; 25 HP 1983-1990 25hp 2 stroke 2 cylinders ; 275 HP 1985-1988 275hp 2 stroke 2,8 cylinders ; 28 HP 1986-1990 28hp 2. 8% positive. There is no mixture control needle on my carb, only an idle stop adjustment. My son's ATC70, which admittedly desperately needs an engine overhaul, only runs when the choke is on. Push the choke control inward. Another major cause is a blocked exhaust. Rule of thumb for two cycles is that a motor at WOT will use one gallon of gas per ten HP per hour -- so a 25 would use 2. I blew through all orifices to check for blockage and reinstalled. Despite occasional runs in my tank, it stopped working. Problems with Nissan (Tohatsu) 2. Turn to PRI and wait 30 seconds for the bowls to fill. Condition is "Used". Only a few possibilities if it runs about 75 % of full throttle 2 stroke engine only runs with choke on here s. If the top end is only affected with the choke on, you're too lean on the main jet. all is well. Post by Fox onMay 20, 2011 at 8:38pm. is applied to both sides of the bulb, not because the circuit is broken. Engines with fuel-injection systems do not have carburetors, so they won't have choke controls. I have a perfectly running bike just like it, so I swapped the carburetors, thinking that was the issue. howtomotorcyclerepair. • 2622/056. Reattach the fuel line to the tank and let your bike sit for 10 to 15 minutes. I have mixed the 2 stroke fuel/oil at 50:1. The most likely cause of a no start mower after running out of gas is dirt in the carburetor, but other possible causes include: Air locked gas system. in Generators. Blog post https://www. It is absolutely normal to start the bike using choke, and even more when the weather is cold. Does your dirt bike run with the choke only?. I have an air leak somewhere. I understand your concern it is freaky when the bike revs up with no load. If it starts without the choke, don't use it. Some times you may get away with adding fuel injection cleaner to the gas, but not if the gas has been sitting for more than about 4 months. no choke lever. One quick check you can do is to pull the fuel line off your carburetor, turn the gas on for a second and see if fuel is flowing out the fuel line. next thing you know my bike was revving it's arse off because the choke circuit was providing heaps of fuel and my band-aid fix was providing heaps of air !! TAPER (A) changes are only made. Are you actually leaving it to warm up? All bikes only start and run on the choke from cold and bog out until they warm up. Then, start it up normally, and see if it will now run without the choke being wide open. 1 Diaphragm accelerator pump. Anyone know as to why it will only run with the choke on???. The acquisition of a NGH 38cc four stroke started after a friend gifted me an old part-built Sid King Privateer, a large model low wing trainer from the 1980s designed for up to 38cc engines, and specifically the Zenoah 38cc. 1 is the displacement, they generally have smaller combustion chambers, which means less fuel burned. In two-stroke engines this does not upset good engine running, but in four-stroke engines this drop in air speed causes the atomiser to deliver insufficient fuel. sounds like a pilot, but I would not rule out an air leak. A relative of mine has a 2004 50 HP 4-stroke Yamaha he bought new and it has always ran great until now. A choke-out is a hand-to-hand combat tactic involving the use of a chokehold to cause syncope, or temporary loss of consciousness, at which point the choke is released. If the engine only runs with the choke full on it means you have a vacuum leak and the engine runs too lean with the choke off. I slotted the carb adjusting screws as mentioned in an earlier post and retuned the hi and lo speed jets and within 5 minutes it was running better than new. Some years ago had a throttle cable with a broken wire strand that caused one of the carb slides to not return properly. Why does my 2 stroke engine only run on choke? Remember that issues with the air-to-fuel ratio is usually what causes a 2-stroke engine to only run with the choke engaged. I changed the fuel out of it, took the carburetor sides off (both the metering and fuel intake. Over the years I have had many 2 stroke outboards & off road motorcycles. Mines 2 stroke as well, but the old DM would never start if you gave it more than 1/2 choke and that was 4 stroke. "Mercury Mariner Outboards 2. 5 hp 4 stroke has been out of use for two years. And, diesel, rather than gasoline, is a much better match with the two-stroke cycle. It sounds like your motor is fine and will work if given the right fuel. 7 Unfolding 2 Wheels (disassembling) 6. ProX put together a list of 12 key things to keep your 2-stroke running strong. Also the gasoline used in the mix should be fresh 87 octane gas. Thread starter Messages 8,931 Location New England. Ok -- I posted a while back about this motor in the other section and noticed its the wrong section anyways. Firstly, undo the oil filler cap, and make sure that it's not overfilled. If the top end is only affected with the choke on, you're too lean on the main jet. As soon as you hear it pop (try to start), immediately take it off of choke and pull it a few more times. You can play with the choke and it will run but constantly wants to die, choke it and it will run for 2-3 seconds, then open it up and it will run for. If you wanna know why does a dirt bike only runs on choke," then you are at the right place. Step to step guide: Here is the step to step guide to the cleaning procedure of the clogged pilot jet that is making your ATV only run with the choke on. firing order is 153624. Start the trimmer and gently unscrew the gas cap halfway off. Its basically the same as opening up the throttle plate itself, only you aren't exposing the needle or main jet. therepairspecialistonline. The next day, with a dead cold engine, you have to use starting fluid again. You lost your manual ? There is areference mark on the housing and mounting ring. He will cup Hawks's cheek, stroke his cheekbone. I've had the bike for 2 years now and every single cold start up has been the same proceedure, full choke, tiniest throttle, push the starter button and it starts up readily and without issue, then push choke in.