Hello,
I’m new to the site, and inexperienced with working on saws. I recently started looking into Alaskan milling some trees on my property into live edge slabs for home projects.
To get things started I found a used Husqvarna 562XP. Saw had some trouble starting and idling but ran well at higher RPM. Ran it this way for a few cuts and killed the piston/rings and effectively lost all compression
Ordered and installed replacement Warhawk cylinder/piston kit, but foolishly didn’t check compression before test cutting some logs. Same hard starting and idling lead me to recheck compression which is measuring 50PSI. I compared this to a smaller working saw I have that measures 100PSI. I don’t trust the numbers on the cheap compression tester, but I know it’s comparatively lower than it should be. Suspected the decompression valve which I’ve confirmed is leaking some a amount using soapy water. New valve is on order. When pulling the saw over I get one pop with each pull, but very difficult to get it to fire back to back even with starting fluid. I took off the carb and inspected the parts didn’t see any visual signs of buildup, so I put it back together without modifications.
Questions:
Could I be loosing half my compression from leaking decomp valve?
The original cylinder gasket was in like new condition, so I did not replace it, or add any additional sealant, should I take top end apart again to reinspect if the new decomp valve doesn’t help? Other recommendations?
I’m new to the site, and inexperienced with working on saws. I recently started looking into Alaskan milling some trees on my property into live edge slabs for home projects.
To get things started I found a used Husqvarna 562XP. Saw had some trouble starting and idling but ran well at higher RPM. Ran it this way for a few cuts and killed the piston/rings and effectively lost all compression
Ordered and installed replacement Warhawk cylinder/piston kit, but foolishly didn’t check compression before test cutting some logs. Same hard starting and idling lead me to recheck compression which is measuring 50PSI. I compared this to a smaller working saw I have that measures 100PSI. I don’t trust the numbers on the cheap compression tester, but I know it’s comparatively lower than it should be. Suspected the decompression valve which I’ve confirmed is leaking some a amount using soapy water. New valve is on order. When pulling the saw over I get one pop with each pull, but very difficult to get it to fire back to back even with starting fluid. I took off the carb and inspected the parts didn’t see any visual signs of buildup, so I put it back together without modifications.
Questions:
Could I be loosing half my compression from leaking decomp valve?
The original cylinder gasket was in like new condition, so I did not replace it, or add any additional sealant, should I take top end apart again to reinspect if the new decomp valve doesn’t help? Other recommendations?