Starter motor trouble 83 KZ1100

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04 Aug 2018 12:44 - 04 Aug 2018 12:49 #788190 by M_a_t_t
Starter motor trouble 83 KZ1100 was created by M_a_t_t
My bike wouldn't turn over, did some troubleshooting and found the starter itself at fault. I want to know how you guys recommend fixing it and if it was a wear issue or if something shorted and messed it up or.......

I didn't have any issues starting the bike and then the bike died. I pushed it home and eventually got around to looking at it. This is what I found. The inside had lots of carbon build up, a few small pieces, but otherwise just a layer of it. Whats the safest/best way to clean it up? One of the brushes has a chip in the edge of it as well. And the culprit itself, a broken wire to a brush. 



I think a rebuild kit would be the best solution, is there one anyone recommends? The only ones I've found (through limited searching) say they fit, but the reviews say they don't.


Thanks,
Matt

83 KZ1100A (shaft)
17 Versys X 300 abs
81 kz650h1
81 kz750e2
90 Honda CBR600F (brother's)
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Last edit: 04 Aug 2018 12:49 by M_a_t_t.

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05 Aug 2018 05:52 #788221 by daveo
Replied by daveo on topic Starter motor trouble 83 KZ1100
You will find (4-brush) rebuild kits listed on ebay in a wide range of prices.

1982 KZ1100-A2

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05 Aug 2018 06:46 #788224 by M_a_t_t
Replied by M_a_t_t on topic Starter motor trouble 83 KZ1100
I found a 4 brush one that said it fit and ordered it. Supposed to be here by Friday (the 10th).

83 KZ1100A (shaft)
17 Versys X 300 abs
81 kz650h1
81 kz750e2
90 Honda CBR600F (brother's)

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07 Aug 2018 16:11 #788422 by VTEC
Replied by VTEC on topic Starter motor trouble 83 KZ1100
Before ordering a brush kit check armature resistance. The brushes won't help if anything is out of specs. Mine had windings shorted to the shaft, so I had to replace the starter.

KZ1000-K2
ZRX1100
XR400R

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  • Scirocco
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07 Aug 2018 16:46 #788424 by Scirocco
Replied by Scirocco on topic Starter motor trouble 83 KZ1100
The copper wire to the brush can be soldered easily.

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07 Aug 2018 18:29 #788431 by M_a_t_t
Replied by M_a_t_t on topic Starter motor trouble 83 KZ1100
Scirocco:
I figured the best repair would be replacement, I also already ordered it.

VTEC:
To check, its the commutator resistance to the shaft right? I did that and it wasn't. However all of the individual plates on the commutator were connected. That doesn't seem right.

83 KZ1100A (shaft)
17 Versys X 300 abs
81 kz650h1
81 kz750e2
90 Honda CBR600F (brother's)

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08 Aug 2018 09:23 - 09 Aug 2018 06:12 #788468 by M_a_t_t
Replied by M_a_t_t on topic Starter motor trouble 83 KZ1100
For whatever reason, I didn't consult the service manual to check service limits. I just checked them and aside from the broken wire the only thing that isn't in spec is the commutator groove depth. The manual says service limit is .2mm, standard is .5-.8mm. There is no insulation between the commutator plates. I tried to get a picture of it, but its not the best.





83 KZ1100A (shaft)
17 Versys X 300 abs
81 kz650h1
81 kz750e2
90 Honda CBR600F (brother's)
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Last edit: 09 Aug 2018 06:12 by M_a_t_t.

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08 Aug 2018 09:50 #788471 by daveo
Replied by daveo on topic Starter motor trouble 83 KZ1100
Note that 0.2 mm is significantly different than 2.0 mm.

1982 KZ1100-A2

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08 Aug 2018 13:16 #788478 by Scirocco
Replied by Scirocco on topic Starter motor trouble 83 KZ1100
Your commutator needs a 5 minutes job on the lathe.



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09 Aug 2018 06:12 #788515 by M_a_t_t
Replied by M_a_t_t on topic Starter motor trouble 83 KZ1100
Does the groove depth mean a new starter?

Daveo:
That was a typo.

83 KZ1100A (shaft)
17 Versys X 300 abs
81 kz650h1
81 kz750e2
90 Honda CBR600F (brother's)

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09 Aug 2018 15:50 #788556 by Scirocco
Replied by Scirocco on topic Starter motor trouble 83 KZ1100
No, you have to machining the commutator to a cylindric shape and remove the concave form with a minimum of metal remove in the brushing area.

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09 Aug 2018 15:54 - 09 Aug 2018 15:56 #788558 by TexasKZ
Replied by TexasKZ on topic Starter motor trouble 83 KZ1100
There seems to be no mica at all between the segments. Won't that be a problem ? It appears to be a lot more than the 0.2mm maximum allowed by Kawasaki.

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
Last edit: 09 Aug 2018 15:56 by TexasKZ.

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