Chainsaw Repair

Great site. I've learned a lot reading the archives. This is the first post for me. I have an OE 346XP that was running good enough but only had 125 compression. I put a new piston on it and have cleaned up the cylinder which looks ok. I would like to do some conservative, "do no harm" type work to it while it's off.

There's a wire edge leading into the ports after what appears like the factory chamfer in the bore. Seems like at the least that should come off flat to the run, but is a radius better? Would squaring up the exhaust port corners be the next step?

The saw has the plastic clamp on the insulation wall. I'm not aware there was a leak, but I saw the Jonsered mod and wondered if a generic hose clamp might work instead of the 2077/83 clamp. Am I better off leaving it alone and buying the kit when it looks like there's problem?

I've got a P5000 that's next in line after the 346. I'd like to do a bit more aggressive porting on it.

Thanks

I used a cv clamp boot on the intake boot and opened up the exhaust port to closer match the gasket, but left it the same in the cylinder. I used a forester piston. Seems to run good.

the cv clam has wrinkled place on two sides that you crimp with a special set of pliers. it remains balanced on a shaft

your hose clamp was out of balance on the drive shaft

It was tighter than the original plastic clamp when set at about 1.5". It slipped on about right . I didn't dare crimp it.