Question about McCulloch 16 In 4.5 Hp Electric Chainsaw With Carrying Case MCC4516FK

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I have a stihl chainsaw that won't fire

I have a stihl 0340AV super chainsaw that won't fire-- It has plenty of spark, but just won't fire. Could you please tell me what to do to correct this.

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  • tudi platt Jan 25, 2009

    I did this--still won't fire- I have spark, but not firing-- put fresh gas in,new plug,rebuilt the carb, so any suggestions. Thank you for your time.

  • Anonymous May 06, 2009

    I too have the same problem with my stihl chain saw. After cleaning and checking the gap on the spark plug and rebuilding the carb it will not start. It is now spitting the fuel out the exhaust after the rebuilt of the carb. I am guess the rings are bad?

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DID YOU REMOVE THE PLUG AND CHECK THE SPARK AT THE GAP? IF YOU HAVE FIRE THERE THEN THE PROBLEM MUST BE A FUEL PROBLEM. ARE YOU USING A FRESH GAS MIXTURE? YOU CAN PUT A FEW DROPS OF MIXED GAS IN CYLINDER THEN RE-INSTALL PLUG TO SEE IF IT FIRES, IF IT DOES THEN YOUR NOT GETTING GAS FROM THE CARB.POSSIBLE STUCK DIAPHRAGM. GOOD LUCK!!!

Posted on Jan 25, 2009

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Another possibility is the flywheel key has sheared--pull flywheel and check. Is the nut loose? That would allow the key to shear. If the spark timing is off, it sure won't run. The nut should be torqued when tightened.

Posted on Jul 06, 2009

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2 Answers

Will fire,wont stay running.wants to be full choked,open choke,it dies


Jerry, First thing to get is a new plug gaped correctly and try. Could need carb. adjustment, fuel filter replaced, bad fuel line(cracked/pinched), Dirt/faulty diaphragm in carb. plugged spark arrester in muffler,etc.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
https://answers.yahoo.com/question/index?qid=20090528073906AA0y882
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hi there mwb15
have you made sure the ignition coil is producing enough voltage to fire under compression load ?

you may get a spark at the plug unloaded but under load it may be breaking down / weak making you think its got a fuel problem ?

does your system use a cdi coil system or point/condenser system ?
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take a look and let me know

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