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Start Relay 16 Jun 2018 08:11 #785248

  • gordone
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When I tried to start the bike today, nothing happened..
I started to troubleshoot, and there was no voltage over the start relay out to the start motor..
So I took a hammer and knocked on it and then it start working...

Please see attached picture, is it possible to purchase identical on new on ebay or something ?
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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Start Relay 16 Jun 2018 10:47 #785263

  • wiredgeorge
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A starter solenoid is pretty universal. Wire goes to lug on solenoid from battery and wire from other lug is connected to your starter. Starter is grounded by the bolts that hold it to the engine case. On your solenoid there is a ground wire and some have this wire and some don't. Your issue could be the poor wire of the wire going to your starter. You might want to take that wire off the lug, cut about an inch off and install a new connector or open up the old eye connector and clamp it good over some clean wire that isn't cut/frayed as the current connection appears to be.
wiredgeorge Motorcycle Carburetors
Mico TX
www.wgcarbs.com
Too many bikes to list!

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Start Relay 16 Jun 2018 16:19 #785290

  • gordone
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No eBay APP ID and/or Cert ID defined in Kunena configuration

wiredgeorge wrote: A starter solenoid is pretty universal. Wire goes to lug on solenoid from battery and wire from other lug is connected to your starter. Starter is grounded by the bolts that hold it to the engine case. On your solenoid there is a ground wire and some have this wire and some don't. Your issue could be the poor wire of the wire going to your starter. You might want to take that wire off the lug, cut about an inch off and install a new connector or open up the old eye connector and clamp it good over some clean wire that isn't cut/frayed as the current connection appears to be.


I’ quite sure its the solenoid it self. So i can just by these?

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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Start Relay 17 Jun 2018 04:05 #785305

  • wiredgeorge
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It should work. Yellow/red is likely trigger from your start button on right handlebar switch and green/black is likely a ground.
wiredgeorge Motorcycle Carburetors
Mico TX
www.wgcarbs.com
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Start Relay 23 Jun 2018 04:18 #785698

  • gordone
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No eBay APP ID and/or Cert ID defined in Kunena configurationI checked more up today when the problem exist. When I push the start button I have around 12.9v on the solenoid (for activation) and I always have power on the relay from the battery, but no power to the start motor.. the solenoid is not activate, when I kick it some times it start to work... hehe

So I`m 100% sure its the relay it self....

Now I need to find one almost identical to the old so cables and bracket is working...

I ordred a used one, hope it will work for me for long time.... ?
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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Last edit: by gordone.

Start Relay 07 Jul 2018 11:37 #786573

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Today have I installed new relay :) it’s working great. Cleaned up some wiring at same time. One problem less :)

Thank you all for your inputs :)

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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Start Relay 07 Jul 2018 15:03 #786584

  • loudhvx
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Keep an eye on those battery terminals. They don't look good. Too much stress there can cause acid leaks or a terminal failure.

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Start Relay 07 Jul 2018 15:18 #786585

  • Scirocco
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gordone, you have to put a rubber cap over the positive battery terminal to prevent a shortcut, it´s a must have!!!

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Start Relay 07 Jul 2018 15:31 #786586

  • gordone
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Hehe good observation! :)

I need a new battery and smaller shoes for the cabels, and then will it be good :)
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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Start Relay 08 Jul 2018 13:30 #786629

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gordone wrote: Today have I installed new relay :) it’s working great. Cleaned up some wiring at same time. One problem less :)

Thank you all for your inputs :)




I don't understand why you found it necessary to relocate the solenoid from the original location (sticking out from the bike ) to a location with a SOLID ground right next to the B+ battery cable? This is a dead short looking for a good bump in the road to weld it's self to an un-fused B+ cable and burn up a few things.. like the cable and possibly the bike? There is no sense in building in your own disasters while attempting to "fix" something. Just sayin. :-/

This is aside from the battery terminal that Scirocco already pointed out to you that needs a rubber cap, and possibly a little rethinking.

Inquiring minds want to know.

EDIT: Ok, I think I got it now.. the sol sticking out is the NEW location, and the solid ground by the B+ terminal on the sol is the old location.. If this is the case, you done good. Keeping up is a challenge some days. :-)
1981 Kawasaki Kz1000K1
Located in the Saint Louis, Missouri Area.

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Last edit: by old_kaw. Reason: duh

Start Relay 08 Jul 2018 21:09 #786649

  • TexasKZ
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Yes, the top pic is what he started with, and the bottom pic is his solution.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
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Last edit: by TexasKZ.

Start Relay 08 Jul 2018 23:14 #786652

  • gordone
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hehe
I should have made som comment to the photos sorry.... the old start relay was sticking up and the new is sticking out :)
The pol on the batteyr is stupid... they should have sticked up so I could mount the cabel shoes on top and not the side....
I have now ordered some new cabel shoes with correct size... the old was was number to big.

Plan:
1. new battery
2. new shoes, mounted like the old one, but will make a 90 degree angle on them.

After these I only have one issue left with the power (I know about.. ?? hehe).

And then some happy driving :)
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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