Hi I took a commpression test on my stock warrior motor and I come up with 140psi. My yamaha service book says max 121psi. Whos right. Is 140psi good or not because it has alot of miles on it and I need an answer. THANKS!

 

I think that 120 might be the minumum for normal operation. Not sure though....

 

Thanks Jakal Warrior for your answer. I called a few places and their saying 140 to 155psi.