OT Stihl saw

Heyseed

Member
I have an older (17 years) Stihl that has always started fine and done a ton of cutting. The last two times out it will start fine, idles fine but would die when I gasses it. The air filter is clean and it has a pretty new plug. It did this yesterday, I cleaned the carb area off with carb cleaner, and blew any built up crud off with air gun. It then ran fine for the rest of the day. Today it started out fine but is doing the same thing again. It acts like it floods as soon as you squeeze the throttle and dies. But will start right back up and idle as long as I let it. Photos are what I cut with it yesterday After it acted up the first time. Thanks for any ideas on what to address.
I posted this on tool talk as well.
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Sounds like exactly the same symptoms as my 031AV- needed a new fuel line. They don't fare well with alcohol- get alcohol free gas for all your small engines, if you have it available somewhere in your area.
 
Check the low and high speed screws on the carb for proper adjustment, check fuel line filter in the tank. Has the saw been sitting long? Maybe dirty carb internally.
 
I would say start at the fuel filter in the tank. Just hook it with a small wire and it will come out the filler hole. While you have it out look the line over real well. They go bad with age and fuel.
 
My 028 will do that from time to time. There is a screen on fuel inlet of the carb that clogs up. It is tiny , about the diameter of a dime or smaller. Usually I try to clean it and drop and lose it and end up replacing it. Costs maybe .50 cents.
Mark
 
I have to clean out the muffler spark arrrestor screen, on my MS-180, or mine abslolutely will not run. use a propane torch, knock all the dust off, and fixed.
 
Speaking of Gas, I've lately switched to Pure NO Ethanol gas,in My 031AV Stihl May be My Imigination, BUT, It actually seems to Run better, is this possibly a reality? larry
 
I have an 031AV also. If it were my saw, i would turn out the low speed mixture screw about 1-8th of a turn. There are 2 mixture screws. The high and low. the low is a little lean.
 
Or Throw the screen in the garbage, and you'll never have that problem again! I chuck the screen on all my 2stroke things, which is about 2 dozen pieces of equipment.
 

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