Question about Poulan P4018WT Wild Thing 18Inch 40cc 2Cycle Gas Powered Easy Start Chain Saw

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Will not stay running

Is there a good starting point for the carb jets ie. 1/4, 3/8 1/2 turn out? please let me know the suggested setting for each the low speed and the high speed jet

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Start with “L” & “H” needle valves 1.5 CCW from lightly seated, then adjust for performance as follows.
Carburetor Adjustment by Madsens.com
http://www.madsens1.com/saw%20carb%20tune.htm

  • CW is leaner; to lean will destroy the saw. If over tightened closed (CW) the adjustment screw faces are easily marred; marred adjustments are difficult to impossible to set properly.
  • Clean the air filter; adjusting with a dirty filter can cause a run lean condition once cleaned and the saw run.
  • Clean the spark arrestor and muffler; if the saw cannot exhale it cannot inhale.
  • There are 2 wav (sound - idle & full - may not be highlighted) files that I find most helpful, I think you will too.
I am going to inject a little philosophy here. Undetected air leaks and defective fuel delivery systems account for most chainsaw failures. Constant adjustment of needle valves can easily camouflage more serious problems that result in burning up your saw. A sudden need for an adjustment may be indicative of a larger problem.

If you have more questions or need additional help please reply below and I will get back to you. HTH & Good Luck.
Lou
Thank You for using FixYa.

Posted on Apr 27, 2010

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