NMMM700
New member
While doing pre-season maintenance on my sled today I found a problem in the primary clutch. One the bushings inside of the rollers is completly worn out to point that there is almost none of it there. The other two roller's bushings are fine on one side and the other side is worn oblong so that the pin has quite a bit of up and down movement. The bushings in the weights are fine and show no wear. The weights and rollers have no flat spots. What could cause this? The busings were new last season and were replaced beacause they wore oblong in the same manner. Any help is appreciated. Thanks.
Check the bushing in your shives & primary cap. Also check the play in the plastic pucks that the moveable shive moves along.
NMMM700
New member
Thanks for the reply Turk. Do you happen to know what the spec is for the the bushings in the cap? It does have a little side to side play. The plastic pucks and sheaves don't seem to have very much play, but I'm not to sure of the spec for those.
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NMMM700
New member
Does anybody know what the wear limit spec is on the primary cap bushing?
NMMM700
New member
I measured the play between the plastic pucks and the sheave and it was at .102 mm. The manual states that the combined clearance of both sides should not exceed 0.3 mm, so it seems that the plastic pucks are ok. There doesn't seem to be any drag of the moveable face on the spider shaft. I'm not able to check that bushing without disassembling the two halves and that takes special tools. I am looking for the spec on the wear limit of the bushing in the cap. It does seem to have some side to side movement on the shaft. Could a bad bushing in the cap cause the the uneven wear of the roller bushing described above? I would appreciate any help. Thanks
NMMM700 said:
Take your clutch off and get it apart and take a good look at things...Last year I got into carbs and cleaning nine and a fellow sledder and this summer he got into clutches so he made his own backyard style tool so to speak... also you can get a rebuild kit cheap all bushings and pins etc...just make notes on witch way the nuts are and everything else has an x to line things up, you will need the torque specs for your machine and some locktite...check this out,http://www.totallyamaha.net/forums/showthread.php?t=27127 and you can p.m. him and I know he will share info with you...good luck and post back..Mike