78 kz650 front sprocket lock??

[workingtoride]

I am replaceing chain and sprockets on 78 kz650(b2a) The new front sprocket does not have a hole for the washer tab to "lock" in the nut (the washer has a tab cut out and bent and you fold the other part over nut). My ? is can I just use a thin lock washer to keep the nut tight? Thanks for the help.

[rstnick]

I recall a similar ? somewhere some time back.
IIRC it was advised to either drill a hole for the tab, or to use lock tite on the threads.

Here's one solution I found:
I'm running an offset front sprocket with no hole for the lockwasher, so I turned the washer around, bent the tang up, put the nut on with some Loctite 2701 (it's green and has a strength somewhere between red and blue), then bent the tang back over the nut to prevent it from rotating. Been running it like this for 3 years without problems, just did it the same way again when I put my new motor in.

Another:
When I replaced my sprockets, the new counter shaft sprocket didn't have a hole for the tang on the washer.
I set the sprocket up on the drill press and made a small hole for it. Been working just fine for over 12,000 miles at high speeds.

Another:
Hey I had the same problem I bought a new sprocket set and as I go to put the stuff on out here in the parking lot of my apartment bamb I get hit with the idea there is no spot for the tab. So I called the dealership where I ordered the parts and talked with one of the shop guys. He said to just drill a indentation in the sprocket where the tab should go. ( he also said he was not liable and neither am I) Any way being a mechanical engineering student I thought about it for a while and said why not. So I got one of the guys in the shop to drill down into the sprocket with a 3/16" carbide bit and it's just like the original. (note be prepared to kill the bit since it's a hardened sprocket)

I got this info from this post:
Countershaft nut came off

[workingtoride]

Was looking 4 it in past treads,with no luck. Tried to drill it with no luck (hardly scrathed it) will try the lock tite. I was not sure if a lock washer would put it out of ballence or if it mattered. Thanks

[steell]

I wondered when the hardened sprocket was going to be noticed

76-80 KZ750 twin uses a splined washer that fits the shaft and bends over the nut to prevent it rotating. I know they're available from Z1 Enterprises, and probably other places also.

[workingtoride]

oh i noticed it rite after i tryed to drill it.

[workingtoride]

z1 is were i got it from. I called him he said they dont have the one with hole anymore. he said do the loctite like everyone else so i will try it and pray