Rear Preload Adjustment Help

Y2K 650R: How the heck does one adjust the shock preload? I can barely see the collars, let alone get at it. Is there a special tool? I hate using the screwdriver and hammer method, and I can barely get one in there as is. Do you have to yank the air boot?

Also, any thoughts about settings? I was just going to go for 100mm for my mix of trail and MX.

The easiest way that I found is to loosen the locking collar and remove the rock guard, then physically turn the spring by itself to adjust (bike must be on a stand).

Hope this helps!

The only way I've found to adjust the shock is to remove the seat, muffler, & and side panels. Loosen the airboot on the carb. remove the top bolt of the subframe and loosen the two lower remaining bolts a few turns. Should be able to gently push the subframe back and down about 4-6 inches exposing the shock. I use a big punch and a rubber hammer, it tends not to eat up the locking rings as bad. 1 full turn is 5mm of sag. There's other good suspension info at:

If anyone has an easier method please post.

I do it the same way as others - take the right sidecover off, seat off, etc. until I can get at it. Then it's the ol' hammer and screwdriver...

Jaybert600 is right on. Just loosen the locking collar and turn the spring with your hand.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now