This is a discussion on 660 Compression within the Grizzly Engine & Transmission forums, part of the Grizzly Forums category; Hi i am new to the site as well as the grizzly. I just purchased an 02 660. I am going through all of the ...
Hi i am new to the site as well as the grizzly. I just purchased an 02 660. I am going through all of the normal engine maintenance. I have ordered the manual but have a hard time waiting for things. I did a compression test tonight and found what i think is rather low. 90psi. Does anyone know what the 660 should get new? Also if anyone has any sugestions on things that need looked after more than other machines please let me know.
Thanks, i talked to one of the service guys at yamaha today and he said he thought it was around 100. I know it is not 150. if it was that hi you would need a lot higher of an octane rating than you can buy at the pump.
Mike has got it right, I just verified it with my service manual.
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