What is known to go bad for the engine!!!

Blaster30

New Member
Apr 13, 2012
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Hey guys im getting ready to rebuild my top end and wanted to know what usually goes bad with the motor for the yamaha blaster so i can start replacing them all...
 
Hey guys im getting ready to rebuild my top end and wanted to know what usually goes bad with the motor for the yamaha blaster so i can start replacing them all...

if u are willing to split the cases change everything u have money for, bearings, gaskets, shift star mod, all seals. best to do it right one time and not have to dick around
 
Check the counter balance shaft gear. Don't know if the gear broke taking out the bearing or vice-versus X( :o Ckunked my case pretty good. I'm just going with a used gear as new is 75$$ :( tho am thinking of maybe a spot of weld from the rivit to plate, wasn't enough left to invision a failsafe mod for it. I mostly just would inspect the bearings in trans, tho the balance shaft turns at crank speed, so probably replace those. I:I
 
ok sure i havent splitted the case yet just getting ready to take to local shop for them to pop of flywheel and thats when my journey begins... lol