I have my quad apart,(for a through going over) and I noticed that the inside of the primary clutch sheeve has a small grove forming at the bottom, right above where the belt sits..Do I need to make some sort of adjustment or is my belt spent?

thanks in advance

 

Sounds like the primary could use a rebuild. Sounds like the sheaves are not coming together "square" and the inside is catching the belt first just before the outside sheave graps it. What kind of hrs do you have? I would check all the belt tolerences. You may also want to try reving the bike up with the cover off and see how the sheaves react to the motor torque.

 

when you say rebuild...What would I rebuild...I have less than 100hrs on it...Light has not come on yet..Not sure what to do??belt tolerances????

 

If you have been rding the old mining area, it is probably just from abrasive dust... do you spend a fairly large amount of time riding in dusty conditions, or someone elses dust ???

 

Mine has the same groove, I use the red spring also and the stall is high enough the when the clutch engages around 1800 RPM that the belt slips, this slippage causes the groove your getting. When the groove get deep enough, I would sand it with fine sand paper.

If your belt is slipping that causes glazeing on the sides of the clutch, which causes more slippage and grooveing.

You might try a lighter stall spring when rideing, keep your clutches clean, use Dry gas, (isopropyl alcohol)

When you clean your clutches also clean the belt.

 

Newbeat I am usually in front so dust isnt a problem[img]i/expressions/face-icon-small-smile.gif[/img].....

Shotgun I think you hit it right on thanks....I do tend to blow out the area with compressed air....I will also be installing the dalton clutch cover and kit with blue spring.....

 

It also causes glazing on the belt. I would check the engagement reving it in neutral with the clutch cover off. The belt should jump "into the groove" once the primary engages. This does make sense!. I would then bet that I and anyone else running a high stall spring like the HPD Plain, would all see the same thing.

Shotgun:

I assume that sanding will just smoothen out the ridges. The groove will just get deeper over time.

 

same here about the sanding...

 

XC;

Yes, just to smooth things out, so the belt doesn't stay in the groove any longer than necessary.

Over time, when the grooves get to bad, take the clutch sheeves off and have them milled, you'll add 5-10 mph more speed.

 

who can I get to mill my clutch....