Question about 2003 ATK 500

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Clutch pro I just purchased a 2002 atk 450 mx I took it out on my first ride and noticed that the clutch would slip and the catch off and on but mostly under full throttle i opened the clutch case and took a look all the clutch is brand new but i think the guy i got it from may have put 90W in the trans i know the factory recommends 80W or 85W would this be causeing the problem. I checked the cable made some adjutments and it still slipped a little. The clutch plates also seemed dry with oil on small parts im just trying to figure out what could be causeing this problem any help would be great.

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5w of oil difference is not the problem but using hypoid oil in the trans case will. Change the fluid and make sure you have the clutch adjusted correctly I believe it is 37mm from clutch cable boss on the block to the point on the top of the clutch pivot arm where the cable attaches. ,,

Posted on Nov 10, 2008


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