Side note - saw was run rich for a good while. Ton of carbon in the muffler, on the plug, and exhaust stains on the clutch cover (visible in first pic). I pulled the muffler and luckily the p&c look good.
Stihl designed it this way! The PRO introduced the clutch driven oiler on this series of saw.It's funny all the Non Pro 026's I have worked on had constant oiler's!
Just a word of caution. When you put the clutch back on, make sure it is on TIGHT, if you are tempted to run it without the bar and chain. If it's not tight and you rev it up, then back off on the throttle, the inertia of the clutch will keep it spinning and it will unscrew itself from the crankshaft and become a deadly rotating missile bouncing around the shop. LEFT HAND THREADS.
I cleaned up that area around the mount as best as I could and it still leaks. Can I just buy a new part # 1121 350 5800 and slap it on? It doesn't look like there is any gasket or o-ring in there, seems like the connection is just plastic to plastic there, which I thought was an odd choice of design. Anyway, if I can just buy a new vent that is an easy fix.
View attachment 484661
My 026 was leaking gas on side just like yours new vent didn't help needed this goes inside the tank Hope this helpsView attachment 484661
This is only one type of several different types of vents used on this saw and I don't believe that this is the one for his particular tank. The EPA got more concerned about evaporative emissions and went to tighter and tighter tank vent arrangements. I think that the OP's may just be the "slow leak" arrangement which might leak if turned on its side.
My tank does not have the red part in it.
Tank vent inside tank View attachment 484902
Okay, will order one then! Thanks for the help.
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