Stihl
A new carb did not fix problem
Experienced gardeners share their insights in answering this question :
Have u tryed adjusting idle screw
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The carburetor might be clogged. A clogged carburetor is often caused by leaving fuel in the chainsaw for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the chainsaw engine to stall.
If your chainsaw still starts and then stops working, check the air filter. Clean or replace the air filter if it is dirty or damaged. Another reason that your chainsaw starts and then stops working could be that the spark arrestor is dirty or clogged. If this is the case, clean it with a wire brush.
An engine stalls when it`s getting too much or not enough fuel from the carburetor. Stihl chainsaw carburetors usually have three adjustment screws: one each for idle, low speed and high speed. If the saw stalls while it`s idling, adjusting the idle screw, which usually is marked LA, should help.
There are many factors that can stop your chainsaw from running, including a bad spark plug or dirty air filter. There are simple problems: a broken fuel line, bad fuel, wrongly calibrated high-low adjustment screw. Also, more complex issues like a damaged carburettor or an engine compression problem.
The fuel line may be clogged from stale fuel deposits, more reasons to cause your chainsaw to cut out when applying throttle. If a fuel line is cracked, it will leak gasoline and draw air from outside into the fuel line. If the line is leaking fuel, it needs to be replaced.
If your saw idles fine, and then bogs down when pressing the throttle, then adjust your `H` screw by unscrewing. This will increase the amount of fuel to the carburetor under load. If your saw idles fine, then runs lumpy with a lot of smoke when pressing the throttle, then adjust your `H` screw by screwing in.
The reason could be a plugged air filter, a clogged fuel line, or a faulty spark plug. We`ve put up this article to assist you in identifying the reasons behind a stalled Stihl chainsaw and have provided an adequate solution, so you don`t have to search elsewhere.
If your saw idles fine, and then bogs down when pressing the throttle, then adjust your `H` screw by unscrewing. This will increase the amount of fuel to the carburetor under load. If your saw idles fine, then runs lumpy with a lot of smoke when pressing the throttle, then adjust your `H` screw by screwing in.
Discover Relevant Questions and Answers for Your Specific Issue
the most relevant questions and answers related to your specific issue
Carb settings for stihl ts 400
ANSWER : Standard settings: screw both in fully, unscrew H screw 1 full turn anticlockwise. unscrew the L screw 3/4 of a turn anticlockwise.
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Changed carb on a stihl 025 from a single set screw to a double set screw . what settings do i need to start initially
ANSWER : On the needle setting closest to engine(air) it is turn clockwise till it stops, then open it up counter clockwise 1 turn. The second adjustment needle, should be turned clockwise till it stops, then opened up 1 1/2 turns. Adjust the second or gas, until your engine sounds like it is running it’s best.
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I have a husqvarna 323L string trimmer. I stored it after running the tank & carb dry for about two years. I fueled it, then started it, & it ran for a minute then died like I turned the switch off. Since it would not restart, I found the fuel filter had broken off the hardened fuel line & it sucked gummy crap out of the tank & into the carb. Failing at cleaning the carb, I finally put a new carb on it & replaced the pump, hoses & filter. It has ran good till this year. I winterized it with stabilizer & left it with a full tank over the winter. The gas in the tank was gone when I got ready to use it this year. I filled the tank with premix, checked for leaks, then started it. It would run fine for about half a tank, start idling poorly (lean) then cutoff & refuse to restart till I refilled the tank. I finally found the tank had cracks & was letting pressure out of the tank & apparently this was causing the carb to lose it’s ability to siphon gas out of the tank. So I replaced the tank which came with new hoses & a filter, which I properly installed to the carb. It cranked right up, but when it runs a half tank, the carb quits sucking gas out of the tank. When I pump to prime the carb, it moves the fuel into the carb, but the pump never gets hard like it does when I prime the carb when the motor is cold. I have to keep refilling the tank, prime, & then it starts & runs until the tank gets about half empty. The new fuel filter is down in the gas tank properly, but It will not run after it shuts off until I refill the tank & prime. I’m baffled. New tank, new hoses, new filter, new carb, & I can find no leaks in the fuel system. It runs strong. The 323L is a two-stroke & it always cranks on the second pull from cold on a full tank. Any ideas?
ANSWER :
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Saw has new vent wont run after hot unless i loosen cap
ANSWER : The vent is not working properly or was installed incorrectly, so there is no negative air entering the tank to take up the space of the fuel leaving it for the combustion chamber. Perhaps your tank cap has a vent as well that isn’t working.
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HT131 POLE SAW MANUAL
ANSWER : I’ll send you a link to the full ‘illustrated parts manual’ maintenance wise, i regularly oil up the inner shafts and brarings in the tube, also grease up the shaft that has the plastic sleve over it, Because it can become dry and start to grip within the case and vibrate.
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What settings should i start off with on carb. @stihl 025
ANSWER : Screw the screw fully in but not tight then turn it out 3/4 of a turn
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Saw starts, runs fine for short time( 2 min) then quits like runs out of gas. I blew out all lines and filter,didn’t help.
ANSWER : Your jets are out of whack on your carb I think. Try bringing it to someone who knows how to adjust them.
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Want run unless choke remains on – Stihl Bg72 Leaf Blower Intake
ANSWER : Probably fuel starvation.Wrong fuel air mix settings on the carb. Damaged carb diaphragm.
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