Used saws/ Compression

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KennyW in CT

KennyW in CT

ArboristSite Member
Joined
Jan 20, 2007
Messages
71
Location
Trumbull, CT
Had a 372XP in for what the owner claimed "it needed a Piston/Cylinder Kit". First thing I did was check the compression. 155 psi. Little to no scoring. Cleaned out the carb and drained out the 1/2 fuel, 1/2 water mix out of the tank, refilled with fresh 50-1 mix and she fired right up! I'd like to speak to the Dealer who told him he needed a new Cylinder Kit! Maybe he had a boat payment.
 
Cam501

Cam501

ArboristSite Operative
Joined
Feb 5, 2007
Messages
373
Location
NC
Had a 372XP in for what the owner claimed "it needed a Piston/Cylinder Kit". First thing I did was check the compression. 155 psi. Little to no scoring. Cleaned out the carb and drained out the 1/2 fuel, 1/2 water mix out of the tank, refilled with fresh 50-1 mix and she fired right up! I'd like to speak to the Dealer who told him he needed a new Cylinder Kit! Maybe he had a boat payment.

or an idiot tech
 
mifirewoodguy

mifirewoodguy

I live off of 2 stroke gas and fresh cut oak.
Joined
Aug 20, 2007
Messages
315
Location
Fenton,Michigan
Whats good compression for a 372 xp?

I have 2 -372xp's one runs grest the other wont idel, I checked compression on the one that runs great and got about 100psi the one that wont idel has about 125 psi with new piston and rings. It will start and run but only by bumping the throttle or running it at high speed. Carb adjustments are at spec, gass mix is correct, would an air leak at one of the crank seals make it do this? I have know way to check for a crank seal leak. Any suggestions?
 
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