For months now my belts have been wearing down way too quickly, usually breaking up on the suface or fraying at the inside edge. Its totally baffled me, ive been thro everything trying to narrow down the problem and thought at least twice that i had it licked, last diagnosis was my electric start bendix had been hittin the belt at top speed so i removed that. Didnt work tho, new belts still wore down
FINALLY now i think i solved it for good. I restrippped the rear pulley, clutch, torque drive again and gave it a good looking over and clean up. Noticed something i hadnt before, a couple of deep scratches on the inside rear pulley face, Eureka!! Thats been wearing down my belt as it slides up and down the pulley i bet? The scratches were rough to the touch so would def not be good for my belt as it rides up and down over it!
Sanded it all down smooth with a sander and refitted again, waiting on a new belt arriving so will see how it goes now. Hoping its finally fixed it cos im sick of buying belts every month
Point i learned from this? NEVER use a large screwdriver or any other object to wedge open the rear pulley when fitting on a new belt
Thats what did mine, taking short-cuts with screwdrivers cos i didnt want to take of the variator since i was in a rush.