How much driveline slop is normal?

[craze1cars]

With drive-belt removed, made a temporary mark on the outer edge of my secondary clutch. Rotated it forward and backward by hand. The mark on my clutch free-travels back and forth almost 2 1/4" inches before the driveline slack comes out to allow the driveshaft to move. This is an 07 Attak with reverse.

Seems like an awful lot....if this were my Doo, I would be searching for a serious chaincase issue/loose chain/worn keyway somewhere. But these shafts are all splined and my chain is tensioned to Yamaha specs of finger tight less 1/4 turn. And tightening the chain further doesn't change it a bit.

Is this normal? I'm thinking (hoping!) it's engineered slop in the lower gear to allow room for the reverse gear teeth to engage more easily. Forgot to check for this free-travel before I swapped tracks and am now second-guessing myself....didn't screw something up in there, did I?

Still learning about these Yami's....Thanks!

 

[Srxspec]

It's normal. All Yamaha models with reverse are the same way. It's simply how the reverse gear and "drive" gear interlock.

 

[craze1cars]

That was my assumption, but now I feel better hearing it from someone with much more experience than I. Thank you much!

 

[BigFoot]

I agree as well. I have a '00 Vmax 600 Deluxe, and it has the backlash also, due to the reverse. FYI, I have also seen the same thing in another brand (Polaris) with reverse gear. This is obviouslyfor mechanical reverse, not the PERC.

 

[yamadoo]

I am glad to hear this discussed, I was trying tell non Yamaha buddies I thought this was normal, now I know.

Thanks

Yamadoo