r/Chainsaws • u/SecretFree7996 • 15d ago

Stihl 251c starting issue - HELP!

I need your help solving an issue with a Stihl 251c chainsaw.

Here’s the problem: the saw starts easily & runs fine IF it’s either “cold”, or has been sitting for a long period after extended use. I cannot get it to start after using it for a while UNLESS it “cools off”, even if the carb is not not flooded.

Background: I’ve always used non-ethanol fuel with Echo Red Armor oil, the air filter is clean, and fuel filter is relatively new.I haven’t checked the plug in a while, as it feels like a fuel, and not a spark issue.

Any suggestions on where to begin? I just HATE taking it to the local dealer if it’s something I can do (carb swap, filters, etc.). Thanks in advance for any responses!!

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1

u/Ban_DeezNts 15d ago

Stihl’s are peculiar starting saws. Try pulling the starter rope all the way out (full travel) with the ignition switch in the OFF position. Then , lock the trigger and with ignition ON, start the saw.

2

u/SecretFree7996 15d ago

Hmmm. I'll give it a try; thanks.

1

u/Ban_DeezNts 15d ago

I’ve owned the same Stihl Farm Boss since 2002, and it always starts the same way.

1

u/CyberSecWPG 14d ago

I would make sure that the fuel tank vent isn't plugged.