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-   -   2001 POLARIS 50 SCRAMBLER PROBLEM (https://forums.off-road.com/youth-atv/199830-2001-polaris-50-scrambler-problem.html)

johnrock11j 10-06-2004 08:00 PM

2001 POLARIS 50 SCRAMBLER PROBLEM
 
My son has a 2001 polaris 50 scrambler that i recently done some modifications to.When i removed the sidecase where the belt is located i seen their were some fins missing off the fixed sheve.I purchased a new one and installed it while i was re-assembling the engine. My son rode for about 25 min one evening and the next evening i was on it and heard something coming from the side case and i pulled the blower hose off so i could see the fins on the new one and guess what fins were missing.I was wondering if anyone else has experienced this or know what is causing this. Any input or help would be greatly appriciated. than you John M. Spencer [img]images/graemlins/cussing.gif[/img]

Scramblur50 10-07-2004 07:31 PM

Re: 2001 POLARIS 50 SCRAMBLER PROBLEM
 
I'd look at the kickstart mechanism and make sure that it's assembled right... make sure that the part that connects the kickstarter to the crank/variator assembly has that looped over wire thingy in it's slot on the outer case cover. I hope that made sense.

Bryce

johnrock11j 10-07-2004 11:13 PM

Re: 2001 POLARIS 50 SCRAMBLER PROBLEM
 
Thanks Bryce, but the little wire loop thingy is in the slot on the outer case.The only thing i can see that this sheave has been hitting on is the hose that goes in the case right over top of the sheave. It seems to only do this when it is being run pretty hard. I dont know but the thing has done this for a long time i just never looked into it until recently, im just starting to get really aggravated with this thing. Bryce have you ever pulled this hose out of the top of the outer case and looked at the clearance on the sheave and the outer case? Their cant be anyway that the sheave cant hit this hose,especially when the motor is turning high rpm's.

Scramblur50 10-09-2004 08:10 AM

Re: 2001 POLARIS 50 SCRAMBLER PROBLEM
 
Maybe a problem with the crank bearings or a bent crank shaft? Ours gets run very hard (70cc kit that gets raced) and never had that sort of problem. the outer veriator half should not be moving at all except for rotating on it's axis.

Bryce


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