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Re: Compression

Posted: Sun Apr 28, 2019 7:39 pm
by spookefoote1956
Straight 40 in the beast and 30 in the cub.

Re: Compression

Posted: Mon Apr 29, 2019 6:43 am
by g5wqian
compression sounds slightly low to me but depends how you checked it .

you need to open throttle fully and kick engine over a few times so it gives the the compression gauge a chance to get an average reading .
usually the compression gauge will creep up each time you kick engine over , to a point it wont go any higher .

my model 30 is between 135-140psi .