AmericanBuilt
ArboristSite Lurker
Picked up a Stihl BR420c backpack blower for free, brought it home cleaned it up, replaced the carb.
After a couple of pulls, it started right away. I tuned the carb and noticed (after running it for about 10 minutes), had oil dripping on the fuel tank. Took the cover off and found the head gasket was leaking the oil.
Pulled the head off then found the head and piston was heavily scored on the exhaust side and the rings were scored to the piston.
I purchased a head kit, replaced bearings and seals, reset the coil pack to .008. I manually ran the crank shaft for about 45 minutes to seat the rings, then performed a compression test and it topped out to 80 psi. Added fresh fuel and tried to start.the motor will not start but tries to kick a bit. Spark is good (set gap to .020) and bright.
Any suggestions would be appreciated!
After a couple of pulls, it started right away. I tuned the carb and noticed (after running it for about 10 minutes), had oil dripping on the fuel tank. Took the cover off and found the head gasket was leaking the oil.
Pulled the head off then found the head and piston was heavily scored on the exhaust side and the rings were scored to the piston.
I purchased a head kit, replaced bearings and seals, reset the coil pack to .008. I manually ran the crank shaft for about 45 minutes to seat the rings, then performed a compression test and it topped out to 80 psi. Added fresh fuel and tried to start.the motor will not start but tries to kick a bit. Spark is good (set gap to .020) and bright.
Any suggestions would be appreciated!