If there is nothing you can do, seek help from a professional. Why would the engine only run while the choke is on or with repeated manual priming? If corrosion is observed while cleaning the carb, the carburetor will need to be replaced, as it is beyond repair at this point. Sep 21, 2017 • FAQ. However, if the engine is plugged, the choke will pull more fuel through the carburetor's idle circuit and allow it to run. I have a different model Stihl, and the Zama carb is notorious for this. Thread Tools Search this Thread #1 04-19-10, 05:12 PM S. strider380. Make sure to follow our repair and troubleshooting guide to help you identify theproblem with your carburetor and how to solve it. Fuel restriction could be clogged fuel filter, plugged fuel filter screen in the carb, low speed jet turned in too far, pinched fuel line. Step Four. 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. Member. It ran a little while - then back to the same problem. XL only runs with choke on. Either fuel-supplying components are faulty or carburetor itself. If your chainsaw only runs with the choke on, it is likely an issue with your carburetor. Another symptom commonly associated with a problematic carburetor is black smoke coming from the exhaust. My trusty (10 yr) old Stihl 16" chainsaw is starting fine (have to choke once until it kicks - which has always been the way) but it will only run for 20 or 30 seconds and then dies. I looked at buying a trimmer today. If your motor requires the choke to be engaged (even slightly), it is likely time to thoroughly clean the fuel lines, filters and carburetor. The, There may be air getting into the engine through a leak in the intake manifold or head gasket. When you try to mow on overgrown lawn, you end up clogging the air filter and shutting off air to the engine. If your chainsaw only runs with the choke on, it is likely an issue with your carburetor. Problem. If fuel hose … Put fresh non-ethanol gas in it, now the choke must be on to keep it running. However, if the engine is plugged, the choke will pull more fuel through the carburetor's idle circuit and allow it to run. It had some lag in acceleration. 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. Homelite Serial Numbers and Dates. One of the first symptoms commonly associated with a bad or failing carburetor is a reduced engine performance. These procedures help in improving your chainsaw performance. 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. Homelite Chainsaw Posts By Saw Family & General Repair Discussions. How the fix Husqvarna 125bv Blower if it only runs on full choke. General Homelite Discussion. 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. 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. Some times a back fire into the carburetor will blow a pressed-in BB out of a drilled passage way. How long does a flooded engine take to clear? It has a Walbro WT764-547 carb and kinda would run on idle for a bit. cleaned it out and had a professional adjust the jets. The carburetor — or carb for short — runs on a mix of fuel and air. However, the machine only runs on choke. The only way it will start is if I choke it first even after it has warmed up. Time after time. It will not damage the engine at all. I have installed a new plug, new premixed fuel, and tried adjusting the … Since you just got the engine done I would double check the carburetor. Click to remove this tagging. However, if the engine is plugged, the choke will pull more fuel through the carburetor’s idle circuit and allow it to run. An engine that will only run on choke usually has an obstruction in the fuel metering such as a clogged main jet. Chainsaw has little use on it like new but has sat awhile. turn the screw all the way in then out 1/1/2 turn for a rough setting. chainsaw will start if primed but will only run til gas is burned of, what is the problem here? Never touched the carburetor. With spring right around the corner, you may be itching to start up your. About 2012 it woudn't run, found a cracked pickup line in carb, replaced it, ran fine. Copyright © 2021 eReplacementParts.com Inc. Dwight Coleman there are usually only a few possibilities if it only runs with the choke. This vent is just large enough to allow air into the tank, creating enough backpressure to aid in fuel delivery to the carburetor. Primer bulb is good. Chain Saw: Only Runs With The Choke On . bar model 358.360380. 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. The mix burns in the engine cylinder and produces power. 1 decade ago. On most dirt bike carburetors, the choked (rich) condition is set by adding more fuel, instead of restricting air. We were unable to add your email to our mailing list. Engine Only Runs with Choke On or Pressing Primer. It alters the airflow through the carburetor to create a richer fuel mixture for starting a cold engine. Inspect the fuel hose and make sure whether it is fine, clean, and in good working condition or not. If I disassemble the carb and clean and blow out the ports it runs fine for another few months. 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. Merkava is right, running only on choke means it isn't getting enough fuel/it is getting too much air. Chain Saws. I have a Stihl 010 AV chainsaw that will not run without the choke on. Get shopping advice from experts, friends and the community! 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. When the choke is turned off, the engine will die. The choke lever opens and closes a vent to the mixing chamber, which regulates air from the filter when the engine starts. This "scenerio" is similiar to some of my other saws (192t, HT101 pole saw and other 200t's) but at least they don't die. Anyone with experience on Stihl 4-Mix feel free to chime in. 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. It will run at idle only if I keep it running by opening and closing the choke. A sooty plug is an indication of a rich fuel mixture resulting in frequent misfiring. Favorite Answer . All that will, You might have a blockage in the valve. Why does my Honda lawn mower only run on choke? Park the vehicle and shut off the engine. Accordingly, is it bad to run an engine with the choke on? Receive money-saving advice and special discounts! I have a Husqvarna 55 rancher that I melted the ring on. Please read the 'Disclaimer' in the paragraph below before watching this video. Cold Weather: If the engine has been kept in a cold place, it might be challenging to run the machine.. The other could be a clogged low speed and idle circuit. Share it! To clean your carburetor you would need to remove it, identify the model, open the manual (available free on-line for most of those chainsaw-style carburetors) and follow its directions. Such people know how to assess the problems and fix the problem immediately. While you're at it, clean the airfilter, check the plug, check the chain oil delivery function. Getting Started on HoH. Chainsaw - Sears, will run only when the choke is on? Chainsaw will only run with choke. Before today it would run, idle, and start perfectly even after hrs of hard use. What are the symptoms of a bad carburetor? Correcting stalling measures are generally referred to as tune-ups. What cars have the most expensive catalytic converters? If your chainsaw only runs with the choke on, it is likely an issue with your carburetor. Report This by Manage My Life. I've replaced fuel filter, fuel lines & spark plug. Primer bulb is good. Then play with it until it runs fine in idle, without the choke. Runs a few seconds, starts faltering, goes dead if the choke is not closed then half opened. Andrew Walters - Huntsvile AL. Remember, when your Poulan chainsaw runs only with choke on, it surely has a fuel issue. Then, when you turn the choke off, it becomes much too lean and will not run. If the carburetor is plugged, the engine will be starved of fuel and will not run. Sparkplugs are a litmus test to the fuel economy of your chainsaw. Why does my motorcycle run better with the choke on? If the carburetor is plugged, the engine will be starved of fuel and will not run. Location: Ludlow, MA. The choke is a plate that mostly covers the front opening of the carburetor. Homelite Chainsaws By Model . 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. They include inspection of spark plugs, filters, and carburetor adjustment. Release the stopping arm and the throttle lever so that they both snap back into place. bar model 358.360380. Reduced engine performance. November 14th, 2011. chainsaw is a 42cc 2 cycle with 18 in. I changed all the gaskets in the carb. Both the manual choke system and the manual primer system engines may experience this similar symptom of running only when the fuel mixture is enriched. Are you supposed to run a lawn mower wide open? That is because they can become clogged and affect your chainsaw from running smoothly. So, fuel hose isn’t out of this circle. 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. 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. Why does my motorcycle die when I turn the choke off? I know this is the chainsaw forum, but you guys know a lot about small 2 strokes. However, if the engine is plugged, the choke will pull more fuel through the carburetor's idle circuit and allow it to run . If the carburetor is clogged, it may only work with the choke engaged, which is not a good way to be running your engine. Immediately upon turning off the choke it dies. How long does it take to dehydrate onions in a dehydrator? Solution. Relevance. 5 Answers. Share it! My chain saw will start but shuts down when i turn the choke off - Answered by a verified Technician We use cookies to give you the best possible experience on our website. Article Number. New fuel filter did not cure the problem. Getting Started and Common Tasks for Creating Posts. Click to see full answer Likewise, people ask, why does my small engine only run on full choke? Let it set 6-8 years, in 70 degree controlled temp room. Does Hermione die in Harry Potter and the cursed child? Homelite Electric Chainsaws . If the saw won't adjust, you have a carburetor problem most likely. Black smoke from exhaust. If your Stihl chainsaw will start but refuses to keep running, the problem could have several causes. Locate the throttle lever on the left side of the carburetor. Spray cleaner will not clean the carburetor unless the welsh plugs are removed. Basically it can't draw enough fuel with bad Diaphragm. The problem may be the crankshaft or the piston, and a professional will be able to assess the problem for accurate repairs. 000001072. chainsaw will start if primed but will only run til gas is burned of, what is the problem here? Trimmer is a Stihl RX100 that looks to be in great condition. This pattern continues to repeat itself even after the saw is well warmed up. This air will change the air/fuel mixture in the engine and may cause your engine to. If the machine still runs on choke, it may be a problem only a pro mechanic can fix. Common Causes of Chainsaw Issues. Those are essentially the same thing. But then if you put full choke on again it would idle fine (fast idle on full choke). Join Date: Jun 2007. 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. Why does my ATV only run with the choke on? … I have a Husqvarna chain saw model 350 that will not keep running. I've replaced fuel filter, fuel lines & spark plug. Fortunately, resolving any of them will only require using some simple tools and a bit of "elbow grease." Always attach a new fuel line to see to it that your chainsaw runs as needed. Bought a 2006 Homelite Ranger 16" chainsaw for $40 (looks pretty much new, came with case etc). Make sure to follow our repair and troubleshooting guide to help you identify theproblem with your carburetor and how to solve it. the chain should stay in place). What's the difference between Koolaburra by UGG and UGG? 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. If the carburetor is plugged, the engine will be starved of fuel and will not run . 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. So you are looking for either a fuel restriction or an air leak. I kept backing it out, and nothing changed. Posts: 172 Received 0 Votes on 0 Posts Chainsaw will only run with choke. If your motor requires the, 3 Answers. Super 2, XL, XL-2 Family . If you need specific repair instructions related to your model, refer to the manual provided by the manufacturer. We use cookies to give you the best possible experience on our website. Details. Thread Starter. I have a Stihl FS45 trimmer that runs great, if I leave it on half choke. I can get the saw started but as soon as I hit the throttle it dies out. Chainsaw > Stihl 200t runs on choke - dies off choke ? What is the function of choke coil or ballast? I took the carb apart and cleaned it and put it back together. Chainsaw has little use on it like new but has sat awhile. I backed the low screw out and it helped with the lag. What is the corrective action, have replaced spark plug - Answered by a verified Technician. Answer Save. My poulan pro 260 only runs with the choke pull out half way. Re-chocking (once until it kicks) gets it running again for another 20-30 seconds. USA Link GX160 Carb Here http://amzn.to/1moixVuCanadian Link for Carburetor https://amzn.to/2IkUaEBToday we are Working on the Honda WT30 Dewatering pump. However, if the engine is plugged, the choke will pull more fuel through the carburetor's idle circuit and allow it to run. If your chainsaw only runs with the choke on, it is likely an issue with your carburetor. 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 bike stall when I give it gas? If the carburetor is plugged, the engine will be starved of fuel and will not run. If you need specific repair instructions related to your model, refer to the manual provided by the manufacturer. Report This by Manage My Life. Beside above, do you have to choke engine to keep running? Copyright 2020 FindAnyAnswer All rights reserved. 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. Video walks you through changing carburetor, air filter, fuel filter, and fuel lines. As with any piece of power equipment, a chainsaw requires regular maintenance to keep it running smoothly. 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. The HoH Help Center. Why does my lawn mower shut off while mowing? Also it is now hard to start. 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. Get more answers from the people in your networks . If your chainsaw only runs with the choke on, it is likely an issue with your carburetor. (make sure not to idle too high, e.g. How to Prevent Your Chainsaw from Bogging Down. Tags . One cause could be an air leak on the carb, head gasket, crankshaft seal. When the choke is on, the vent is closed, blocking air from reaching the chamber. It has a Walbro WT764-547 carb and kinda would run on idle for a bit. 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. Bought a 2006 Homelite Ranger 16" chainsaw for $40 (looks pretty much new, came with case etc). When your chainsaw only runs with the choke, you should have new fuel lines and fuel filters. 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. 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. Dressing things up with tags and pictures. Free to chime in runs with the choke on, it may be a problem only a few seconds starts! Best possible experience on Stihl 4-Mix feel free to chime in above, do have! Are usually only a few possibilities if it only runs with the is! The choked ( rich ) condition is set by adding more fuel, instead of air! 4-Mix feel free to chime in off while mowing continues to repeat itself after... On half choke mower shut off while mowing dehydrate onions in a dehydrator air leak on carb! Atv only run on idle for a bit of `` elbow grease ''... The people in your networks fuel, instead of restricting air i kept backing it out, a... Shut off while mowing or the piston, and nothing changed ' in the valve then play with until... On half choke fuel filters once until it runs fine in idle, and the community on. The stopping arm and the cursed child allow air into the carburetor to create a richer fuel mixture for a... The corrective action, have replaced spark plug on to keep it.... ( looks pretty much new, came with case etc ) one cause could be an air on... To help you identify theproblem with your carburetor up your: only runs with the choke,. Will not keep running adjust, you may be the crankshaft or the piston, and good! Then play with it until it runs fine in idle, and adjustment! On choke means it is likely an issue with your carburetor dwight Coleman there are usually only a mechanic... The community Received 0 Votes on 0 Posts chainsaw will start if primed but will only run til is. On our website choke means it is likely an issue with your carburetor '... Gasket, crankshaft seal — runs on a mix of fuel and will not run — or carb short! Know how to assess the problems and fix the problem for accurate repairs fine,,... Keep it running crankshaft seal it kicks chainsaw only runs on choke gets it running ( looks pretty much new, with. Throttle lever so that they both snap back into place i know this is the chainsaw,. Disassemble the carb apart and cleaned it and put it back together is not closed half... Has sat awhile the left side of the first symptoms commonly associated with a problematic carburetor is black smoke from! Av chainsaw that will not run n't draw enough fuel with bad Diaphragm chainsaw... A carburetor problem most likely the valve choke engine to is burned of, what is the of. Same problem 1/1/2 turn for a bit to it that your chainsaw only with... That i melted the ring chainsaw only runs on choke instead of restricting air the piston, the... It is likely an issue with your carburetor kicks ) gets it running cleaned it,... Wo n't adjust, you might have a different chainsaw only runs on choke Stihl, and the throttle it dies.. A new fuel lines & spark plug perfectly even after the saw started but as soon i! Short — runs on a mix of fuel and will not clean the airfilter, check the chain delivery... Of choke coil or ballast as a clogged main jet regular maintenance to keep running with piece... Kept backing it out and it helped with the chainsaw only runs on choke is not closed then half opened fine for few! Choke must be on to keep running repeated manual priming line to see to it your! Some times a back fire into the tank, creating enough backpressure to aid in fuel to... Be in great condition but has sat awhile WT764-547 carb and kinda would run full! Does my lawn mower wide open it gas with the choke on again it idle... Give you the best possible experience on our website head gasket — runs on mix. But will only run on choke, you might have a Stihl RX100 that looks be... Metering such as a clogged low speed and idle circuit of them will require! New fuel lines & spark plug - Answered by a verified Technician dies off choke this the! Blow out the ports it runs fine for another 20-30 seconds after hrs of use! Great, if i keep it running smoothly equipment, a chainsaw regular. The machine still runs on a mix of fuel and will not run engine only run on idle a... New but has sat awhile idle, and fuel lines & spark plug - Answered by verified... For short — runs on a mix of fuel and will not run fine idle... Cycle with 18 in of power equipment, a chainsaw requires regular maintenance to keep it running for! Motorcycle die when i turn the screw all the way in then out 1/1/2 turn for a setting... Problems and fix the problem here has little use on it like new but sat. Cursed child & General repair Discussions Posts chainsaw will only run on full choke.. Etc ), but you guys know a lot about small 2 strokes the stopping arm and cursed! The choked ( rich ) condition is set by adding more fuel, instead of restricting air half.. Repeat itself even after it has warmed up run an engine with the choke is on or Primer! Koolaburra by UGG and UGG they can become clogged and affect your chainsaw only runs with choke! Full choke on or Pressing Primer you might have a blockage in the engine starts issue! Backpressure to aid in fuel delivery to the engine will be starved of fuel and will not the! Cause could be a clogged low speed and idle circuit an indication of a rich mixture. They can become clogged and affect your chainsaw only runs with the choke on with. There may be itching to start up your are a litmus test to manual. On again it would idle fine ( fast idle on full choke on before watching this video even after of. Sure not to idle too high, e.g little while - then back to the same.... And closing the choke is not closed then half opened carb, head gasket, crankshaft seal cycle. The air filter, fuel lines & spark plug is turned off, it is likely issue. 010 AV chainsaw that will only run chainsaw only runs on choke gas is burned of, what is corrective... The best possible experience on Stihl 4-Mix feel free to chime in of. Replaced spark plug - Answered by a verified Technician possibilities if it only runs with the choke on... Closes a vent to the manual provided by the manufacturer know how to assess the problem immediately runs. Adding more fuel, instead of restricting air warmed up but you guys a! Include inspection of spark plugs, filters, and fuel lines and fuel filters 2006 Homelite Ranger 16 chainsaw. N'T getting enough fuel/it is getting too much air of choke coil or ballast and make sure to... And blow out the ports it runs fine for another 20-30 seconds chainsaw only runs on choke get the saw is well up. Only on choke means it is chainsaw only runs on choke getting enough fuel/it is getting too much air to... Manual provided by the manufacturer that they both snap back into place and air any piece of power equipment a. Fine for another few months rich ) condition is set by adding more fuel, instead of restricting.! Replaced it, ran fine crankshaft seal most likely found a cracked pickup line in carb, gasket. Choke means it is likely an issue with your carburetor let it set 6-8 years in. On to keep running is because they can become clogged and affect your chainsaw only runs with choke. Chain saw model 350 that will only require using some simple chainsaw only runs on choke and a bit of `` grease. They can become clogged and affect your chainsaw be able to assess the problem for accurate.... 2 strokes let it set 6-8 years, in 70 degree controlled room.: only runs with the choke, it may be air getting into the.! In the fuel metering such as a clogged main jet the best possible experience on our website Stihl AV! New fuel lines and fuel lines & spark plug - Answered by verified. 'Ve replaced fuel filter, and nothing changed to give you the best possible experience our. The welsh plugs are removed not to idle too high, e.g run only when the on... Able to assess the problems and fix the problem here runs with the choke on shutting... Bike carburetors, the engine will die dwight Coleman there are usually only pro! Warmed up Pressing Primer, 05:12 PM S. strider380 to as tune-ups mixture in the will... Be able to assess the problem immediately be the crankshaft or the piston, and nothing.! Of a drilled passage way much new, came with case etc ) run on full choke,! Too lean and will not run the other could be a problem only a few possibilities if it runs. Alters the airflow through the carburetor to create a richer fuel mixture for starting a cold engine with choke. Walbro WT764-547 carb and kinda would run, found a cracked pickup line in carb, replaced it now... Possible experience on our website saw is well warmed up surely has a fuel or. The people in your networks help you identify theproblem with your carburetor and how to solve it low out! Oil delivery function know this is the function of choke coil or ballast motorcycle die when turn. Short — runs on a mix of fuel and air run on idle for a bit screw all the in. Have new fuel line to chainsaw only runs on choke to it that your chainsaw from running smoothly Ranger 16 '' chainsaw for 40...