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98 Sportsman 500. Gears won't shift....

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  #11  
Old 10-31-2007, 05:41 PM
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Default 98 Sportsman 500. Gears won't shift....

Good deal, I would like to hear the fix!!
 
  #12  
Old 11-01-2007, 09:52 PM
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Default 98 Sportsman 500. Gears won't shift....

I have seen a lot of ebs models have this problem. There could be other issues but without seeing the machine I cant tell. Anyway what is going on is there are two washers in the ebs clutch(the one way drive clutch) that can get worn, a brass one or the fiber one can get ruined and be completely gone. If your belt shreds, belt threads can tear this fiber bushing out. It can wear out on its own, etc. What happens is the one way clutch has too much side play. When the belt comes off the inner clutch face it needs to physically move away from the face to allow the one way clutch to do its job(which is allow the driven clutch to stop turning, or slow way down to almost a stop). If there is too much side clearance the belt will push the one way clutch toward the left side but won't pop off the clutch face causing the driven clutch to turn. Therefore making it hard to shift, creep, and a lot of times the machine will pop through the carb(if applicable). It's very similar to having the idle set too high(harder to fix though)

Ok to fix it you need access to the special tools to totally tear the clutch apart. Not just get to the spring and buttons, I mean tear it completely apart. Sometimes you can just replace the brass(i think it's brass) washer and the fiber washer, reassemble and you will be ok. Sometimes if there is too much wear on the inner clutch face you are going to have to completely replace the clutch. A lot of times you can fix it this way. Bear with me I will try to make this understandable.

Depending on how much play there is in the one way clutch part of the drive clutch and how much wear is on the clutch face i have done this. Order 2 fiber bushings and possibly the brass one. I cut one of the fiber bushings to the same size as the brass one. I then in stall the new uncut fiber bushing on the clutch, the one way clutch, the cut fiber washer, the brass washer, and the cap. Reassemble the clutch and see if you can turn the one way clutch by hand. If you can, reinstall the clutch, make sure the alignment is correct, problem solved. It's my experience that if there is no side movement in the one way clutch and you can still turn it by hand it works as good if not better than new. Never had any problems after doing this.

If it doesn't make sense, get a pic of the clutch and it might help. I'm not sure how many people have access to all the tools so this fix may not be feasible but it does work well. Also, this fix is for the drive clutches that have the grooved one way clutch assemblies. The newer ones are smooth now and I haven't had to tear any down yet so I don.t know if it would apply to them. Hope this helps out.
 
  #13  
Old 11-05-2007, 02:57 PM
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Default 98 Sportsman 500. Gears won't shift....

Thanks for the help! I will how the new belt wears and if it seems to fail prematurely I check out the washers.
 
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