The illusive fuel tank vent

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samaritan

ArboristSite Operative
Joined
Nov 14, 2022
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lagrange ky
I own a Stihl ms251c and Im rebuilding it, I was looking for the fuel tank vent, and could not find it. I searched this site and you-tube with no luck. I finally did find it. Its under a cover on the left side of the saw handle near the tank, the screw also holds the shock spring in place.View attachment 1042835
 
The old one came out with a bit of a struggle, the new ones not fitting tight, is there a way it needs to be done?
 
Trouble starting, stalling. I got the vent back in, i lubed it and used channel locks and squeezed it in
I had a poulan, would prime-start-run 15-sec, die, after pulling hair out, (and changing numerous things), cut 1/8" off fuel line (1"+length) between carb/primer, which straightened line removing slight bend/ crimp, and allowed FREE FLOW of fuel, and it cured issue.
 

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