tachometer drive gear is boken

[Gateway]

I have a 81 GS 450 L. The tip of the tachometer drive gear broke. Casn u just pull it out after the cable comes out? Or is there more to it?

[Agemax]

yes it should pull out from the head, not sure on the 450's but there is a little tab locator with a small bolt that locks it on to the head, remove the bolt and tab and the tach drive should pull out. although it may be a bit tight..........

[Gateway]

My sons 81 GS 450 L has the same problem.It is a simple fix BUT this will be the 3rd time replace in 2 mos.

[chipbutty24]

The whole assembly just pulls out.

I'm having a problem here as well. The tach gear looks fine but isn't spinning when the bike is running.

Any ideas?

[FoxyBLankworthy]

The whole drive will come out. You can convince it out gently with a flathead screwdriver. I had to do this on my 650.

There is threading on the tach drive, as well as corresponding threading on your exhaust-side cam. Provided the threads on your drive is good, if your tach is not spinning on the engine side, there's a possibility the threads on the cam have stripped. Only way to know is to pop the valve cover and have a look.

Word of caution. Don't over-tighten the screw when reinstalling the locator tab. It's easy to do as the screw threads right through and does not stop. I did it. It sucked.