Causes for belt breakdowns

Hoosier

Well-known member
I've had my clutches aligned and I'm still having trouble with the belts breaking prematurely. I think I'm breaking them in correctly. Any other ideas of what to check? 06 Fusion 600.
 

whitedust

Well-known member
Break in is not the problem. Check belt deflection,heat build up & motor mounts only things left that can break belts since clutches were checked & aligned.
 

Hoosier

Well-known member
I've checked heat build up by checking the clutches when we take a break. They don't feel that hot to the touch immediately after turning the sled off. They're warm but not too warm.

I tried to check belt deflection, but it seems difficult to measure precisely. Any tips?
 

whitedust

Well-known member
Set deflection so belt is 1/16 -1/8 above edge of secondary. Not hot, clutches aligned,not motor mounts then check to see if you are over reving your RPMS on shifting that is deflection. Doo TRA clutch has easy clickers not sure how to reduce or increase revs on on Poo. But that has to be problem over reving redline & not good for engine either. Don't remember 600 fusion belt breaking but 755 & 900 was real PIA on belts. Did this just start happening? How many miles? Also check to see you have the correct belt number. Wrong belt is sold more times than you would think. It happened to me with old 500 gave me 340 belt.
 
Check your torque stop right behind the primary clutch. Make sure the distance between the torque stop and motor are correct. If your torque stop is damaged replace it.
 

Hoosier

Well-known member
No, I have the 1080. I ride with a bunch of Poo 600s too, so I don't know what's wrong with mine specifically (obviously). I'll take a look at whatever ideas I can find, but I think I'm going to buy the Carlisle/Dayco belt that has a 1 year warranty next.
 

anonomoose

New member
Betcha it's the motor mounts. if this lets the primary move around too much it will shread the belt usually from outside in. And as stated the torque stop can allow the motor to deflect enough to chew them up too.
 

Hoosier

Well-known member
Thanks for all the tips. I found storage for my sled in the Northwoods for the summer, so I probably won't see it until the Fall. But I definitely have a couple things to check. With the fresh rebuild of the engine, I'm hoping I can figure out this belt issue and keep it for a few more years...
 

KnappAttackAC

New member
Might want to rebuild the clutches. I just broke my secondary clutch and that had blown my belt because of that. If your getting any vibration your going to want to find out whats causing the vibration.
 

indy_500

Well-known member
Might want to rebuild the clutches. I just broke my secondary clutch and that had blown my belt because of that. If your getting any vibration your going to want to find out whats causing the vibration.

dealer said the clutches on my dads sled are bad and are mis-aligned and could start hurtin the engine because of the MAJOR vibration on it. didn't have them do anything to it. switched the belts and didn't help at all. then, thanks to getsome's idea, i took the studs out on the outer edge and that fixed her! ice builds up on the top of the woody's studs on the inside of the track and then hits the bogey wheels and creates MAJOR vibration.
 
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