When in high gear feels like low

[renrav]

Just bought this 02 660 grizzly, My problem is when I select the High it dont seem to be in high goes very slow and engine RPMs go up but like it is in 1st gear and needs to shift. I hope somebody can help...

[Mad Mike]

check belt and do some clutch maintenance clean and grease the rollers clean up the sheaves with some scotch-brite. what kind of oil u using? could be wet clutch slipping.

[renrav]

tjis thing has lots of power but it seems like stuck in 1str gear, I checked oil it was low used 10w40 oil Do I need to take clutch off to do the maintenance

[xzoutlaw]

The clutch likely has seen some muddy water, I had this happen to me, the mud will pack in the roller weights if the machine is running for a period of time before it gets swamped. You have a 3 hour job ahead of you, but hen you are done, you will know quite a bit about the workings of Yamaha's CVT.

[jlamb]

I hope that, that 10w-40 oil you put in was ATV wet clutch compatible oil,, if not your wet clutch is slipping!!

[etrones]

Also check to see if it has had the shim mod done to it.

[renrav]

Thanks for all the help ...yes clutch was full of mud and no grease. cleaned and greased and now runs like a champ.. The hardest part for me was the getting nut off, I had to get a impact gun...

[thomasakehoe]

Just a word of caution make sure your nuts are tight, I knoq ir sounds like common sense but after reading this and other ATV forums seems to be a common issue which can ruin your day and clutches in a short amount of time. And glad you had an easy fix.