Primary Chain?

  • davehayward1
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30 Jun 2011 20:49 #460346 by davehayward1
Primary Chain? was created by davehayward1
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?

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30 Jun 2011 23:13 - 30 Jun 2011 23:14 #460380 by SPARKY47
Replied by SPARKY47 on topic Primary Chain?
I suspect your 750 will be similar to my 500 in that my manual says no more than 1" of up and down play in the middle of the primary chain.Problem is it being wrapped around the crank...engine out,cases split jobbee.Best of luck.
1980 KZ500 B2
Location: Middle England[/b
Last edit: 30 Jun 2011 23:14 by SPARKY47.

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  • TeK9iNe
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01 Jul 2011 00:02 #460392 by TeK9iNe
Replied by TeK9iNe on topic Primary Chain?
Replace the primary chain when you commit to a complete tear down and you wont feel so bad about the job :laugh:

Its not difficult, just time consuming.

B)
Motorcycle Shop Owner/Operator

79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors ;)

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01 Jul 2011 03:53 - 01 Jul 2011 03:54 #460419 by bountyhunter
Replied by bountyhunter on topic Primary Chain?

davehayward1 wrote: 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?


Dumb question: do you mean the chain connecting the starter gear to the flywheel drive hub?
1979 KZ-750 Twin
Last edit: 01 Jul 2011 03:54 by bountyhunter.

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04 Jul 2011 20:59 #461046 by davehayward1
Replied by davehayward1 on topic Primary Chain?
Thanks to all for the help
I replaced the starter clutch and it's running beautifully

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05 Jul 2011 02:22 #461097 by steell
Replied by steell on topic Primary Chain?

bountyhunter wrote:

davehayward1 wrote: 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?


Dumb question: do you mean the chain connecting the starter gear to the flywheel drive hub?


750 four, the chain connecting the crankshaft to the secondary shaft, which then spins the clutch.
KD9JUR

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05 Jul 2011 02:46 - 05 Jul 2011 02:49 #461099 by bountyhunter
Replied by bountyhunter on topic Primary Chain?
OK, I thought the 81 750 LTD was a twin. It's a four.
1979 KZ-750 Twin
Last edit: 05 Jul 2011 02:49 by bountyhunter.

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