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The Stihl saw I have does not run. I cleaned the air filter, cleaned and checked the gap on the sparkplug and added gas and oil. On full choke the saw will start and run but when I try to take it off on the full choke the saw quits.

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  • Stihl Expert
  • 417 Answers

It's not getting enough fuel. You need to richen the idle mixture a bit more.

Posted on Nov 23, 2013


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SOURCE: poulan chain saw P3314

pull the muffler off and check if the piston is scored,if it is you need to replace the piston and cylinder.

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SOURCE: no oil is coming out of my 044 stihl saw-I ve

Stihl Product Instruction Manuals page 33
You might also try
Oil System Plugged.

  1. Remove the clutch cover, bar, and chain, clean the bar groove, any holes and passages on the rear of the bar (both sides, consider rotating the bar) Clean the saw’s oiler hole and channel. Start the saw and see if it oils when revved up. If yes reassemble your saw. If no, continue with 2.
  2. Insert a blunted, hooked piece of wire through the oil filler hole and pull the hose in the oil tank out (clean or replace, difficult to determine serviceability). Work your way through the linkage cleaning and replacing any defective parts as you go. Carefully check the hoses for cracks especially at bends and connections. If equipped with an oil pump it is usually behind the clutch (clutch is probably left handed thread). Please make extensive notes & some digital pictures will help during reassembly. GL

Posted on Nov 17, 2009

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1 Answer

Carb settings for Stihl FS160

Here's a link to your owner's manual,look at page 26 for carburetor adjustments,I have 3 stihl's,a blower,weedeater and chain saw,had them a long time,never had to adjust the carb.What problems are you having?Clean your air filter or replace it if's real dirty and can't get clean,use 50;1 regular unleaded gas and oil mixture,put a new plug in it,same as you were using,Autozone has them cheaper than the Stihl dealer.Are you using your choke and throttle correctly when starting?On mine,I set the throttle,lock it in,put choke on close,pull a few times,no more than 5,then open choke and pull,it should start,is your spark plug getting oil-gas on it,if so then your flooding it at start up,use fresh gas mixture.I wouldn't adjust the carb.

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1 Answer

Will only run on full choke

This is a fuel supply issue. Don't use the saw until you find the problem.
Things to check are:
fuel filter, fuel line crack, impulse line, carb needs work, air leak to engine. Etc.

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Sparkplug ,If not. Try saw on half Choke, if works check filter in tank.

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My cutoff saw won't start, compression is good, has oil/gas mix, gets spark from wire but sparkplug was dirty so i cleaned it and she still won't turn over

If the saw briefly runs when you prime the carb and/or cylinder with gas then most likely fuel is not getting thru the carb. Try rebuilding the carb and replacing the fuel filter first. You can also search on youtube and google for troubleshooting tips.

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Craftsman 32cc weed trimmer will not stay running when trigger depressed after start & warmup ... Bad gas? Plug gap? Choke adjustment? Suggestions?

Check the fuel filter, air cleaner, and muffler for plugging. Check the fuel lines for decay or other damage. Plug gap should be 0.020". Bad fuel usually means poor starting and idling as well as poor high speed running. Try setting the H jet needle CCW somewhat to increase fuel input to the engine. It should 4-stroke lightly at speed, then 2-stroke immediately when the line is cutting. Be sure to use a modern synthetic saw oil in the fuel (available at home centers, hardware stores, and saw dealers) and be sure to shake the container thoroughly just before filling the tank each time to prevent oil starvation. Hope this helps!

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1 Answer

After starting and letting it idle for 30 seconds I start to cut but it starts to die when I give it gas it goes for a while then dies

What I do with my stihl saws is after starting I let it warm up for a few seconds and then run it at full throttle for about thirty seconds. If your saw does not want to keep running I would check to make sure air filter is clean. Next you can adjust carb.setting for idle and hi speed,check your manual for instructions. Also I would remove and clean spark plug,check gap and reset or replace as needed. Make sure your gas oil mix is proper and gas has not been setting for a long time,no more than a couple of months without some type of fuel stabilizer. I use either STA-BIL or sea foam at a rate of 2 to4 ounces per gallon of gas. About the only other thing I might suggest is to check the feul filter. They usually are located on fuel pick up line inside gas tank and can be a pain to get to. Good luck and I hope this helps Thanks

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1 Answer

My chainsaw will not run unless it is on full choke and as soon as the choke is turned off it cutts out and will not start unless again the choke is on full

If you must choke it for it to run it is running lean. Continued operation in a lean condition will ruin it.
If you did nothing to the carburetor adjustments, are using a fresh (1.5 months or less) fuel mix with the same fuel/oil ratio it was last tuned with, (I recommend 50:1 = 1 gal premium fuel to 2.6 oz quality 2-cycle engine oil), are operating at the same elevation, and the air filter is clean, there is a reason your saw is acting up.
Clean the spark arrestor screen. Most often it is a fuel delivery problem. Check the fuel filter on the free end of a hose in fuel tank (manufacturer recommends an annual replacement). Check all fuel delivery lines especially at fittings and bends for cracks and holes. It can also be an air leak, inspect for a loose or defective carburetor manifold or loose carburetor. If those are good then the likely cause is internal parts of the carburetor are dirty or have failed. HTH

Typical fuel system:
Fuel Line Replacement by
  • The hose in the tank with the filter on the free end connects directly to the carburetor input connection.
  • If the saw is equipped with a primer bulb, an output line from the carburetor connects to the suction side of the primer (once the bulb is collapsed it draws fuel from the tank through the carburetor to refill as it inflates).
  • The pressure side of the primer returns displaced fuel to the tank as it is depressed.
Take lots of notes and a few digital photographs to help with reassembly. HTH
A local saw shop Husky or Stihl (not Jerry's lawn mower) will usually repair this for $20-40. It might be worth a call or 2. If repaired and tuned ask what fuel/oil mixture they used and affix a label near the fuel filler cap.

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Poulan chain saw P3314

pull the muffler off and check if the piston is scored,if it is you need to replace the piston and cylinder.

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