Starter clutch issues on my '81 KZ 750 LTD
Replaced springs and rollers and it worked fine for a while.
Pulled the starter clutch again and replaced three stripped bolts but it's still
rattling when I hit the start button
I have a replacement starter clutch and am going to replace the whole thing this time
What about the primary chain?
It looks fine - a little loose maybe. How do I know if it should be replaced?

 

I've never heard of a primary chain failure. There has to be a spec for measuring over a specific pin count to check for wear. It will be in a service manual.

I know my bike has primary chain rattle, but again, never heard of a failure. Since it does not affect any timing of anything, there is no real worry about it. It's just extra driveline lash, that's all.

If you replace it don't be surprised if there is play in the new one. I do remember someone on the Zephyr-Zone forum made up a primary chain adjuster/tensioner to take up the excess play, but again I just have NEVER heard it to be a concern.

 

Thanks for the advice
I put in a starter clutch today and it's running
beautifully