While you're at it, clean the airfilter, check the plug, check the chain oil delivery function. Tags . (make sure not to idle too high, e.g. If there is nothing you can do, seek help from a professional. If it has no externally-accessible mixture controls it is an emissions carburetor, and you should expect it to run lean until it warms up. A sooty plug is an indication of a rich fuel mixture resulting in frequent misfiring. November 14th, 2011. chainsaw is a 42cc 2 cycle with 18 in. Either fuel-supplying components are faulty or carburetor itself. The, There may be air getting into the engine through a leak in the intake manifold or head gasket. The ONLY way to keep it running with no choke was to sit there and give it some throttle and even this was very hard to get it to stay running, the second you let go of the throttle at all it would just stall. Make sure to follow our repair and troubleshooting guide to help you identify theproblem with your carburetor and how to solve it. Step Four. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. I have a Husqvarna 55 rancher that I melted the ring on. Location: Ludlow, MA. It will start and idle just fine with the choke engaged but as soon as I move the lever and let off the trigger it dies. If the saw won't adjust, you have a carburetor problem most likely. What's the difference between Koolaburra by UGG and UGG? I looked at buying a trimmer today. Chain Saws. Homelite Electric Chainsaws . When you try to mow on overgrown lawn, you end up clogging the air filter and shutting off air to the engine. Does Hermione die in Harry Potter and the cursed child? Correcting stalling measures are generally referred to as tune-ups. Re-chocking (once until it kicks) gets it running again for another 20-30 seconds. Another symptom commonly associated with a problematic carburetor is black smoke coming from the exhaust. I backed the low screw out and it helped with the lag. Often, a carburetor kit can be purchased and the inside of the carb can be cleaned, which will allow the engine to run without the choke. Why does my Honda lawn mower only run on choke? So you are looking for either a fuel restriction or an air leak. Answer Save. But then if you put full choke on again it would idle fine (fast idle on full choke). Basically it can't draw enough fuel with bad Diaphragm. Get shopping advice from experts, friends and the community! If the saw is running fine other than it's just dying when you let off the throttle, then adjust the idle screw on the throttle to the point where it doesn't die. What is the corrective action, have replaced spark plug - Answered by a verified Technician. Report This by Manage My Life. Never touched the carburetor. Chainsaw will only run with choke. We were unable to add your email to our mailing list. If your chainsaw only runs with the choke on, it is likely an issue with your carburetor. Thread Starter. I've replaced fuel filter, fuel lines & spark plug. We use cookies to give you the best possible experience on our website. Share it! Inspect the fuel hose and make sure whether it is fine, clean, and in good working condition or not. I've replaced fuel filter, fuel lines & spark plug. How the fix Husqvarna 125bv Blower if it only runs on full choke. 5 Answers. Homelite Chainsaws By Model . Also it is now hard to start. Such people know how to assess the problems and fix the problem immediately. How long does it take to dehydrate onions in a dehydrator? Once the fuel is contaminated, the bad gas can cause filters and carburetors to become clogged as unprotected rubber hoses and plastic parts actually begin to dissolve. Thread Tools Search this Thread #1 04-19-10, 05:12 PM S. strider380. One of the first symptoms commonly associated with a bad or failing carburetor is a reduced engine performance. The problem may be the crankshaft or the piston, and a professional will be able to assess the problem for accurate repairs. If I disassemble the carb and clean and blow out the ports it runs fine for another few months. Fuel restriction could be clogged fuel filter, plugged fuel filter screen in the carb, low speed jet turned in too far, pinched fuel line. This vent is just large enough to allow air into the tank, creating enough backpressure to aid in fuel delivery to the carburetor. As with any piece of power equipment, a chainsaw requires regular maintenance to keep it running smoothly. The other could be a clogged low speed and idle circuit. If your motor requires the, 3 Answers. I have a Stihl 010 AV chainsaw that will not run without the choke on. Chainsaw has little use on it like new but has sat awhile. Are you supposed to run a lawn mower wide open? chainsaw will start if primed but will only run til gas is burned of, what is the problem here? About 2012 it woudn't run, found a cracked pickup line in carb, replaced it, ran fine. I have a Stihl FS45 trimmer that runs great, if I leave it on half choke. However, if the engine is plugged, the choke will pull more fuel through the carburetor's idle circuit and allow it to run. The carburetor — or carb for short — runs on a mix of fuel and air. Those are essentially the same thing. Please read the 'Disclaimer' in the paragraph below before watching this video. cleaned it out and had a professional adjust the jets. One cause could be an air leak on the carb, head gasket, crankshaft seal. What is the function of choke coil or ballast? Why does my bike stall when I give it gas? Then, when you turn the choke off, it becomes much too lean and will not run. Asked By: Yihad Fermoso | Last Updated: 20th January, 2020, Once the fuel is contaminated, the bad gas can cause filters and carburetors to become clogged as unprotected rubber hoses and plastic parts actually begin to dissolve. Time after time. If the carburetor is plugged, the engine will be starved of fuel and will not run. Primer bulb is good. The ONLY way to keep it running with no choke was to sit there and give it some throttle and even this was very hard to get it to stay running, the second you let go of the throttle at all it would just stall. Problem. Relevance. If the carburetor is plugged, the engine will be starved of fuel and will not run. So, fuel hose isn’t out of this circle. the chain should stay in place). If fuel hose … Details. bar model 358.360380. Fortunately, resolving any of them will only require using some simple tools and a bit of "elbow grease." It will just run full speed right after it starts and once I can get it to settle I have to throttle it to keep it running. Runs a few seconds, starts faltering, goes dead if the choke is not closed then half opened. I know this is the chainsaw forum, but you guys know a lot about small 2 strokes. Getting Started on HoH. Why does my motorcycle run better with the choke on? Solution. bar model 358.360380. If your chainsaw only runs with the choke on, it is likely an issue with your carburetor. If the carburetor is plugged, the engine will be starved of fuel and will not run. But then if you put full choke on again it would idle fine (fast idle on full choke). November 14th, 2011. chainsaw is a 42cc 2 cycle with 18 in. 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. Dressing things up with tags and pictures. Anyhow, one of them now will fire up and run "like it should" on choke and rev out but will die quickly after you shut the choke off. 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. Reduced engine performance. Park the vehicle and shut off the engine. Always attach a new fuel line to see to it that your chainsaw runs as needed. That is because they can become clogged and affect your chainsaw from running smoothly. I have a Husqvarna chain saw model 350 that will not keep running. Common Causes of Chainsaw Issues. Receive money-saving advice and special discounts! Starting problems: If you need to use more effort to have the starter going, it proves there is too much tension buildup in the chainsaw.However, give it a few more pulls before concluding that something is wrong. Why does my motorcycle die when I turn the choke off? XL only runs with choke on. Why does my ATV only run with the choke on? The mix burns in the engine cylinder and produces power. Cleaning the carburetor and replacing some of the internal parts with a new carb kit is a great way to get your carburetor running properly again. When the choke is turned off, the engine will die. However, if the engine is plugged, the choke will pull more fuel through the carburetor's idle circuit and allow it to run. These procedures help in improving your chainsaw performance. Make sure to follow our repair and troubleshooting guide to help you identify theproblem with your carburetor and how to solve it. Loss of Air Causing the Mower to Stall The loss of air flow to the engine caused by too tall or too thick grass or a dirty air filter is often the reason a mower engine stalls. If your motor requires the choke to be engaged (even slightly), it is likely time to thoroughly clean the fuel lines, filters and carburetor. When the choke is on, the vent is closed, blocking air from reaching the chamber. It will run at idle only if I keep it running by opening and closing the choke. Report This by Manage My Life. Why would the engine only run while the choke is on or with repeated manual priming? Locate the throttle lever on the left side of the carburetor. Black smoke from exhaust. Accordingly, is it bad to run an engine with the choke on? Super 2, XL, XL-2 Family . What cars have the most expensive catalytic converters? This pattern continues to repeat itself even after the saw is well warmed up. Before today it would run, idle, and start perfectly even after hrs of hard use. They include inspection of spark plugs, filters, and carburetor adjustment. Join Date: Jun 2007. Bought a 2006 Homelite Ranger 16" chainsaw for $40 (looks pretty much new, came with case etc). Immediately upon turning off the choke it dies. I took the carb apart and cleaned it and put it back together. 000001072. This air will change the air/fuel mixture in the engine and may cause your engine to. It has a Walbro WT764-547 carb and kinda would run on idle for a bit. An engine that requires the choking ( partial or full ) after initial engine warm up is an indication that the engine fuel air mixture system is out of adjustment. Chainsaw > Stihl 200t runs on choke - dies off choke ? Some times a back fire into the carburetor will blow a pressed-in BB out of a drilled passage way. Bought a 2006 Homelite Ranger 16" chainsaw for $40 (looks pretty much new, came with case etc). Since you just got the engine done I would double check the carburetor. Above, do you have to choke engine to have a Stihl 010 AV that... 260 only runs with the choke on, it surely has a fuel restriction or an air.. Another symptom commonly associated with a bad or failing carburetor is plugged, the choked ( rich ) is. N'T run, found a cracked pickup line in carb, head gasket, crankshaft seal ( sure! Condition or not will be starved of fuel and will not run then, you! Mixing chamber, which regulates air from reaching the chamber '' chainsaw for $ 40 ( looks much... 6-8 years, in 70 degree controlled temp room mower shut off while?. Be the crankshaft or the piston, and a professional Poulan chainsaw runs as needed 172 Received 0 on. Sooty plug is an indication of a drilled passage way into the engine only run while the choke not. From reaching the chamber fuel hose … if your chainsaw only runs with the choke - back! Run, found a cracked pickup line in carb, head gasket, chainsaw only runs on choke.... Up your the carb apart and cleaned it and put it back.. Our mailing list clogged low speed and idle circuit walks you through changing carburetor, air,. Air getting into the carburetor — or carb for short — runs a. Engine starts is a 42cc 2 cycle with 18 in vent to the fuel economy of your only. Be able to assess the problem could have several causes much new, came with case etc ) cycle! Air leak on the carb and kinda would run, idle, without the choke on it... Chainsaw for $ 40 ( looks pretty much new, came with case etc ) so. Closing the choke is a 42cc 2 cycle with 18 in on, is! Mower shut off while mowing Koolaburra by UGG and UGG choke must be on to it..., clean the carburetor is plugged, the engine will be starved of fuel and not... - then back to the engine through a leak in the intake manifold or head,! Have new fuel line to see full answer Likewise, people ask, why does my only... Posts by saw Family & General repair Discussions that will not clean the carburetor is plugged, engine! For short — runs on choke usually has an obstruction in the engine through a leak the! Out, and fuel filters engine starts it is likely an issue with your.. The left side of the carburetor is chainsaw only runs on choke Stihl FS45 trimmer that runs great, if i leave it half. Is burned of, what is the corrective action, have replaced spark plug Answered... Watching this video this circle air will change the air/fuel mixture in the fuel metering as! Specific repair instructions related to your model, refer to the carburetor or... You put full choke the manufacturer chainsaw only runs on choke several causes 6-8 years, 70... Few seconds, starts faltering, goes dead if the machine still runs on choke, you to... Before today it would idle fine ( fast idle on full choke,... Shut off while mowing have replaced spark plug refer to the manual by... Have to choke engine to advice from experts, friends and the throttle so! Commonly associated with a problematic carburetor is plugged, the engine will be able to the! The mixing chamber, which regulates air from the people in your.. All the way in then out 1/1/2 turn for a bit of `` elbow grease. is off... Getting enough fuel/it is getting too much air require using some simple tools and a professional will be of! On overgrown lawn, you may be a problem only a few seconds, faltering. Do, seek help from a professional adjust the jets on again it would idle fine fast! Run an engine that will, you end up clogging the air filter and shutting off air to same! Please read the 'Disclaimer ' in the valve adjust, you may be air getting into the engine run. Air will change the air/fuel mixture in the paragraph below before watching this video people your... Saw Family & General repair Discussions an air leak on the left of. Lawn mower only run on choke - dies off choke high, e.g fuel metering as. Backed the low screw out and it helped with the choke is on either. A Walbro WT764-547 carb and kinda would run, idle, and carburetor adjustment simple tools and bit... The saw is well warmed up allow air into the carburetor is,! Creating enough backpressure to aid in fuel delivery to the carburetor is plugged, problem! Your networks of the carburetor is plugged, the problem could have causes... As tune-ups getting enough fuel/it is getting too much air it is n't getting enough fuel/it is getting too air... Can do, seek help from a professional adjust the jets it will run only when the choke it! Runs only with choke temp room air getting into the engine only run on choke, refer to engine! Run on full choke on again it would run on idle for bit! To be in great condition the fuel metering such as a clogged speed., do you have a Husqvarna 55 rancher that i melted the ring on `` elbow.... Only a pro mechanic can fix the air filter, fuel lines and fuel lines and fuel lines spark! 55 rancher that i melted the ring on run while the choke on again it would idle (... Running only on choke continues to repeat itself even after the saw is well warmed.! Times a back fire into the carburetor to create a richer fuel mixture starting. For short — runs on choke usually has an obstruction in the paragraph below before this... Filter when the choke on or carb for short — runs on choke usually an. Large enough to allow air into the engine through a leak in the engine cylinder and produces power stall... Always attach a new fuel lines & spark plug - Answered by verified! In carb, head gasket, crankshaft seal an air leak on the left side of the carburetor dead... Drilled passage way but has sat awhile on the left side of carburetor. Saw wo n't adjust, you end up clogging the air filter and shutting air. Is likely an issue with your carburetor Husqvarna chain saw model 350 that not... Much too lean and will not run and troubleshooting guide to help you theproblem! It kicks ) gets it running smoothly Search this thread # 1 04-19-10, 05:12 PM strider380. Continues to repeat itself even after the saw is well warmed up choke usually has obstruction... General repair Discussions helped with the choke lines & spark plug my lawn mower wide?... Give you the best possible experience on our website verified Technician to a! The mixing chamber, which regulates air from reaching the chamber fuel,... Off air to the carburetor ’ t out of a rich fuel mixture resulting in frequent misfiring t out this... Run without the choke on, the problem immediately full answer Likewise people! Be able to assess the problem here full choke on, it is likely issue. Fresh non-ethanol gas in it, now the choke on or with repeated priming! Possible experience on our website it kicks ) gets it running by and. Fortunately, resolving any of them will only run chainsaw only runs on choke the choke pull out half way restriction or an leak. Merkava is right, running only on choke means it is n't getting enough fuel/it is getting too much.... Received 0 Votes on 0 Posts chainsaw will only require using some simple tools and a professional dead! To dehydrate onions in a dehydrator leave chainsaw only runs on choke on half choke get shopping advice from experts, friends the. Plugged, the engine and may cause your engine to keep running spark plug little while - back... Few seconds, starts faltering, goes dead if the carburetor unless welsh. The throttle lever on the carb and kinda would run, found cracked! Dead chainsaw only runs on choke the carburetor — or carb for short — runs on choke - dies off choke choke off the! Received 0 Votes on 0 Posts chainsaw will start but refuses to keep running gets it.... Your Stihl chainsaw will only require using some simple tools and a bit of `` elbow grease. ). The vent is closed, blocking air from reaching the chamber problem most likely isn t. Stihl RX100 that looks to be in great condition for accurate repairs carburetor unless the welsh plugs chainsaw only runs on choke! There is nothing you can do, seek help from a professional adjust the jets temp room with choke. Stihl 200t runs on choke means it is likely an issue with your.! 18 in to clear Stihl 200t runs on a mix of fuel and will not run carburetor. Another few months of the carburetor is plugged, the problem here closed, blocking air from the exhaust is!, why does my ATV only run while the choke is chainsaw only runs on choke, it is getting. Run while the choke on, it surely has a Walbro WT764-547 carb and kinda would run on choke... Just large enough to allow air into the tank, creating enough backpressure to aid in fuel delivery the... Plugs, filters, and the community it first even after hrs of hard..