Excessive handlebar vibration?!

[Blastershredder]

i have a 2000 blaster which shakes to the point where i cant hold onto the handlebars, engine mounts are good recently rebuilt last spring only 4 hours on rebuild, first topend rebuild bottom was rebuilt also.. any ideas what might be cuaseing it? also when i rev it up the rear shock compresses and bolts become loose....... please help thanks

 

[yzrider]

hmmmmm, i am actually clueless on this one, the rear shock compressing could be a blow shock, but i'm clueless on the vibes

 

[sicivicdude]

Pull the clutch cover off and make sure that the counter balance gear and primary drive gear are timed correctly. The good money is that they're not.

 

[Blastershredder]

ill take a look at the shocks and gear, is the primary drive and balencer gear hard to time

 

[sicivicdude]

Nope, The end of the crank has a small gear with cross-cut teeth and a bigger gear with straight teeth. The bigger gear and the balancer shaft gear have a dot on them both and they need to point towards each other. You will have to remove the clutch to see or change them...