I just picked up an 87 LT230E quadrunner last week and I've had it out a few times. It has a pretty strong vibration at higher RPM, at low RPMS it doesn't do it. I've already tightened up a couple of the motor mounts that were loose, but that didn't really help too much.

Just wondering if this is normal for this motor or if I shoud be looking for a problem. Also does anyone know how to adjust the auto clutch mechanism.

 

my 230 s does same thing and i know main bearings are shot have large amounts of side to side play...(grab flywheel and jiggle up and down side to side) but think im gonna change rod too

 

Yeah I was kind of worried about that, it seems to get worse as it gets hotter probably because the oil is getting thinner.