Chainsaw Repair

A little update after another couple months running this XT to XP conversion.

Ran good all winter. Had some warmer weather last week and it all of a sudden it went lean at idle during a removal.
I suspected a air leak so just shut it off and grabbed another saw to finish.

On tear down I found the muffler lose and the manifold leaking at both the carb junction and cylinder. Verified by starter fluid while running.
New muffler gasket
I coated both ends of the manifold with high heat RTV. Had the cylinder off so I could wipe the inside clean of any squeeze though of RTV.
Let dry over night and tuned the next day.

If I was building another I would seal the manifold connections right from the start. The 385 boot has to squeeze down quite a bit  on the cylinder, the 372xp cylinder clamp bottoms out. While the boot didn't move, I wondered if it was really sealed well on the first assembly.

So just a FYI if anyone else decides to do this upgrade/change.

A lot of people use the original 372 boot and just turn it to meet up with the bolt pattern of the carb to avoid this issue.