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My problem is still unresolved. Definitely the tank vent it leaks from. The vent appears to be just a little (for lack of a better word) paper clip type piece of metal where I can see daylight through if I look through the bottom of the cap into some light- I can’t see how it would ever seal- sure it let’s air in, but also let’s gas/oil out. Maybe I’m missing something?That same sealing ring is used on
009,010,011,012,020,030,031,032,041,045 and 056
The tank vent is also in the cap and can go bad and leak too.
It is a oneway valve that Stihl used on many saw up to 660.
I have used it in Stihl saws that it was never used on to fix
leaking gas tank vents.
TT
TT
No. The tank requires air to enter to replace the fuel that is drawn out to run the engine. The cap has a vent valve in it, it might be missing in your cap.Shade tree question- Should the tanks be under vacuum when it runs and that prevents gas oil from exiting?
Look up the parts diagram on dyispareparts.com
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