OK, here's an odd one. Does anyone have any idea what the compression should be in a generator engine?
Model: Yamaha YG2800i
Engine size 171 cc
I ran a compression test and it was about 50 PSI. This seems incredibly low as most engines I have tested are closer to 150+ PSI. But I thought that due to the smaller displacement, fact that it's not a high compression engine and it's pull start rather than electric, that the compression might be lower. But 50 seems too low.