z750L: Repair starter clutch

  • Nessism
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Re: z750L: Repair starter clutch

25 Jun 2025 06:12
#914022
There is a tutorial on using screws to reattach the basket together.  I'll look for it for you, but it's linked on the 750 turbo site.  Personally, I'd rather have it TIG'ed.  Anyone that half way knows what they are doing can do the welding for you.  My guy used low temp silicon bronze rod.
Ed
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1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
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Re: z750L: Repair starter clutch

25 Jun 2025 06:28 - 25 Jun 2025 06:33
#914024
Here you go found it . Ive done it both ways welding and bolts . Both works . I think welding is much easier as driving those old rivets out isn't easy

  Clutch Damper Change (1).pdf

Edit Couldnt get it on here for some reason . Its on this page scroll down a bit 

clutch repair - urgent warning - Page 20 - 750turbo.com
Gpz 750 turbo The one I ride
Gpz 750 turbo Not finished
Gpz 750 turbo Not started
Gpz 550 1981
Gpz 550 1983
Bunch of other junk
Last edit: 25 Jun 2025 06:33 by riturbo.
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Re: z750L: Repair starter clutch

25 Jun 2025 06:38
#914025
Thank you!

I don’t know if these is wear out?

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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Re: z750L: Repair starter clutch

25 Jun 2025 06:44 - 25 Jun 2025 06:47
#914026
The rollers can get caught in those grooves.  At minimum, I'd polish out any edges.


Clutch damper change article attached below.  Please let me know if it didn't attach correctly.
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0

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1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
Last edit: 25 Jun 2025 06:47 by Nessism.
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Re: z750L: Repair starter clutch

25 Jun 2025 06:49
#914027
[img
P1020585 by nessism , on Flickr
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0

www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know

1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
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Re: z750L: Repair starter clutch

26 Jun 2025 06:18
#914089
Nessism wrote:
The rollers can get caught in those grooves.  At minimum, I'd polish out any edges.


Clutch damper change article attached below.  Please let me know if it didn't attach correctly.

I’ve decided to order a new "CLUTCH-ASSY-ONEWAY" (13193-1062) as well. From what I understand, this means the starter clutch will now be completely new, correct?Based on the pictures and what we've seen so far, what do you think the issue was with the starter — considering that we haven’t found any obvious or complete damage?Could it simply be wear and tear on the springs, pistons, and the CLUTCH-ASSY-ONEWAY?
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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Re: z750L: Repair starter clutch

26 Jun 2025 06:53
#914093
I believe it was simply a "wear" issue - given that it works as intended with the plugs removed it appears that it couldn't generate enough "friction" when under load
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
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Re: z750L: Repair starter clutch

26 Jun 2025 06:59
#914095
My guess is that the cause is an accumulation of wear on all the various parts.  And of course, that 810cc piston kit of yours puts even more load on the starter clutch.

Member Daftrusty installed a sprag type starter clutch from a later model 750 into his engine.  That would be the ultimate fix (I think).  I'm pretty sure the new parts you are purchasing should solve the problem, though.
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0

www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know

1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
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Re: z750L: Repair starter clutch

27 Jun 2025 03:36 - 27 Jun 2025 03:37
#914129
Should I replace the rubber damers in sec. Shaft?

see video for rotation slack.

see video below:
drive.google.com/file/d/1h-Uy79Ku2PSjs85...Al/view?usp=drivesdk
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Last edit: 27 Jun 2025 03:37 by gordone.

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Re: z750L: Repair starter clutch

27 Jun 2025 03:56
#914130
Makes sense while you are in there, you can then forget about it for many years to come
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
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Re: z750L: Repair starter clutch

27 Jun 2025 04:28 - 27 Jun 2025 04:31
#914132
Will order, guess it will reduce wear due to less vibration between shafts also?

looking forward to see if I can feel and hear difference with new rubber in starter hub and clutch hub… the free rotation in clutch was quite a lot…
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Last edit: 27 Jun 2025 04:31 by gordone.

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Re: z750L: Repair starter clutch

27 Jun 2025 07:21
#914136
gordone wrote:
Should I replace the rubber damers in sec. Shaft?

see video for rotation slack.

see video below:
drive.google.com/file/d/1h-Uy79Ku2PSjs85...Al/view?usp=drivesdk
I can't view the video.  Are you talking about the dampers in the primary drive chain cush hub?  If so, those were shrunk on my bike, so I replaced them.
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0

www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know

1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread

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