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steveninwales
08-16-2009, 06:27 AM
"Hi guys, can someone tell me the age of my Yamaha 40BE serial no.676BS100400
I have found water on the lower spark plug and I was going to take the cylinder head off. Is there a sequence of taking the nuts of\on. What is the torque settings. Thanks"

BIKER101
07-27-2013, 08:33 AM
hi, I have similar problem with my yamaha 40BE. I did a compression test on both cylinders and it sat at 9 bar for a good 30 min which indicates cylinder head is ok. Has the motor been laid up for a while?

BIKER101
07-27-2013, 08:34 AM
hi, I have similar problem with my yamaha 40BE. I did a compression test on both cylinders and it sat at 9 bar for a good 30 min which indicates cylinder head is ok. Has the motor been laid up for a while?