So I pulled apart the 562XPG I bought, knowing it probably had an air leak.
This is a running saw, with an idle problem. Unfortunately I have no means of testing compression, so pulled it apart after a failed vac/pressure test (clutch side seal is leaking).
I'm not really sure how to judge this. Knowing how nasty the saw was, crud was probably ingested through the intake, and it also seems there's blow by, possibly due to a worn piston ring?
Previous owner says saw has about 250 hours on it. All stock.
I was kind of put off by what looks like a little scoring and some marks in the cylinder, even though they can't be felt.
Apparently everything nasty was exactly out of sight when looking though intake and exhaust ports...
How would you proceed from here?
I want to clean piston and cylinder and put a new ring in at minimum but not sure whether that's enough, or that I need to sand piston and/or cylinder, or possibly even need to put a new piston in it? Not sure how 'worn' this would be considered since the grooves on the skirt seem mostly gone to me.
Exhaust side
Intake side
Some side views (Sorry about bolt being in the way, but I guess it's clear enough)
Intake side
Exhaust side
Intake side
Exhaust side
This is a running saw, with an idle problem. Unfortunately I have no means of testing compression, so pulled it apart after a failed vac/pressure test (clutch side seal is leaking).
I'm not really sure how to judge this. Knowing how nasty the saw was, crud was probably ingested through the intake, and it also seems there's blow by, possibly due to a worn piston ring?
Previous owner says saw has about 250 hours on it. All stock.
I was kind of put off by what looks like a little scoring and some marks in the cylinder, even though they can't be felt.
Apparently everything nasty was exactly out of sight when looking though intake and exhaust ports...
How would you proceed from here?
I want to clean piston and cylinder and put a new ring in at minimum but not sure whether that's enough, or that I need to sand piston and/or cylinder, or possibly even need to put a new piston in it? Not sure how 'worn' this would be considered since the grooves on the skirt seem mostly gone to me.
Exhaust side
Intake side
Some side views (Sorry about bolt being in the way, but I guess it's clear enough)
Intake side
Exhaust side
Intake side
Exhaust side