STIHL The Official Stihl Chainsaws Thread

[Sloughfoot]

Piston was in backwards, which sometimes is done if you need clearance for finger ports ect long as it won’t hook the exhaust port or transfers.

This one was unmolested. The arrow isn't visible any longer but I think the scoring was actually on the intake side where pins are.

 

[Maintenance Chief]

It's a 180.

The impulse ports are in different locations from what I remember?
Your carb gasket might be blocking it.

 

[Sloughfoot]

The impulse ports are in different locations from what I remember?
Your carb gasket might be blocking it.

It runs fine, just different. Doesn't scream at WOT when it's too lean, just bogs down.

 

[lehman live edge slab]

The impulse ports are in different locations from what I remember?
Your carb gasket might be blocking it.

25/250 left side ms 180 right. Think you need to slit gasket a little to make it pull vacuum correctly