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KZ650B front sprocket

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29 Jan 2020 06:39 #818159 by BCKZ
KZ650B front sprocket was created by BCKZ
Just replacing sprockets & chain on KZ650B 1978. The front sprocket coming off has a hole drilled for the tab washer to fit into, the new front sprocket has no hole. Whats the usual fix? I've tried drilling the new front sprocket to accept the washer but my drills ain't doing it.

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29 Jan 2020 07:43 #818163 by 650ed
Replied by 650ed on topic KZ650B front sprocket
Use a genuine Kawasaki sprocket - it has the hole. Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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29 Jan 2020 08:09 #818164 by martin_csr
Replied by martin_csr on topic KZ650B front sprocket
Could he switch to a splined washer that you're supposed to be bend over one side of the engine sprocket nut?
1981 KZ650 Competition Sports and Road
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29 Jan 2020 10:46 #818174 by KZB2 650
Replied by KZB2 650 on topic KZ650B front sprocket
A few years ago this was talked over here loctite was one thing but that would worry me, ..... I thought of the splined washer then too Martin but since the sprocket is flush with the shaft the splines would not hook up.......... I ended up buying a Sunstar over Ebay with the hole so I could stop worrying about it.
1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.
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29 Jan 2020 11:24 #818177 by rangeroy
Replied by rangeroy on topic KZ650B front sprocket
use a splined washer, when you bolt it up its slightly offset to match with the bolt holes, the sprocket floats on the shaft but its no problem
1977 z650
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29 Jan 2020 12:44 - 29 Jan 2020 12:51 #818185 by 650ed
Replied by 650ed on topic KZ650B front sprocket

rangeroy wrote: use a splined washer, when you bolt it up its slightly offset to match with the bolt holes, the sprocket floats on the shaft but its no problem


He has a KZ650. The KZ650 countersprocket setup is different than the photo you posted. Below is a KZ650 countersprocket. Notice the end of the shaft is threaded with a nut on it. Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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Last edit: 29 Jan 2020 12:51 by 650ed.
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29 Jan 2020 15:10 #818192 by baldy110
Replied by baldy110 on topic KZ650B front sprocket
Use blue locktite on the nut. I never had one come off on any of the dozens of bikes I've owned and ridden. Don't overthink it.
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31 Jan 2020 06:46 #818291 by BCKZ
Replied by BCKZ on topic KZ650B front sprocket
All sorted good to have friends with the right tools to drill it!

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31 Jan 2020 11:33 #818309 by rangeroy
Replied by rangeroy on topic KZ650B front sprocket
glad you got sorted, the pic/post I put up is a z650 (mine) but its got a 6spd gearbox fitted & I forgot about the output shaft been different :-( sorry for any confusion
1977 z650
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31 Jan 2020 21:55 #818326 by bluej58
Replied by bluej58 on topic KZ650B front sprocket
I use blue locktite too.
78 KZ1000 A2A

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01 Feb 2020 01:17 #818333 by BCKZ
Replied by BCKZ on topic KZ650B front sprocket
No worries thanks for the input, all sorted.:) :)

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