husqvarna 375K Powersaw

[budman2010]

I have a Husqvarna 375K Power saw.  The piston and cylinder head went out on the unit (piston seized) and I replaced it with another replacement kit.  It only ran for a short time and shelled the new head and piston.  This happened a second time as well.  I just ordered the replacement kit and I'm seeing if anyone else had issues with this saw doing this.  The oil is mixed at 40:1.  I'm at a loss.  Thanks!

[celliott]

You very likely have an underlying issue with the saw such as an air leak or lean tune. 
Before you tear it down for the new top end, you gotta pressure/vac test it and find out if you have an air leak. Seals would be my biggest suspect. Intake boot is also a potential culprit, as is a cracked impulse or fuel line. Many possibilities but there is a reason that saw is burning up top ends. Gotta find it!