KZ750 Twin Won't Start, STILL wont start!! Updated

750steve
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KZ750 Twin Won't Start, STILL wont start!! Updated

10 Sep 2011 15:22 - 25 Sep 2011 15:54

Does anyone recognise this sound? I've replaced the solenoid & i've found out the starter button wont work as the starter does nothing when its pressed. The bike will be getting a full rewire in the future but i want to get it started before i remove the engine & get to work on it.

What is wrong?

Here goes

07 ZX6R Race Bike
1977 Z750 B2 Twin
1976 Z650 B1

Last edit: 25 Sep 2011 15:54 by 750steve.

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750steve
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Re: KZ750 Twin Won't Start

10 Sep 2011 15:24 - 10 Sep 2011 15:24

#475684

I should add that all i've done mechanically is replaced the springs in the starter motor clutch & adjusted the cam chain tensioner in accordance with the manual.

07 ZX6R Race Bike
1977 Z750 B2 Twin
1976 Z650 B1

Last edit: 10 Sep 2011 15:24 by 750steve.

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steell
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Re: KZ750 Twin Won't Start

10 Sep 2011 15:53

#475690

Inside the nose of the starter is a planetary gear set used as a gear reduction. It sounds like the ring gear on that gear set is spinning, but it's supposed to be locked to the case.

KD9JUR

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750steve
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Re: KZ750 Twin Won't Start

10 Sep 2011 16:22

#475695

Thanks Steve. Will i need to remove the starter & strip it or is that the gear that the starter chain runs on that you're talking about?

07 ZX6R Race Bike
1977 Z750 B2 Twin
1976 Z650 B1

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750steve
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Re: KZ750 Twin Won't Start

10 Sep 2011 19:34

#475767

Well i just took the starter motor off & it wont come apart, the 2 long screws that hold it together seem to have seized in. So, do i replace it with the same item or is there a better srarter to look for?

Also, to test it by applying 12volts where do i connect the negative terminal?, anywhere on the leg that attaches it to the engine? & the + goes on the only terminal? I tried that & it wont spin! Sorry for the dumbass questions but i am learning!

07 ZX6R Race Bike
1977 Z750 B2 Twin
1976 Z650 B1

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steell
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Re: KZ750 Twin Won't Start

10 Sep 2011 22:53

#475811

12V to the stud, ground to anywhere on the case, preferably clean metal. The starter should spin, if it don't spark when you connect the last cable then you don't have a good connection.

Used starters are fairly cheap, whether they are any good or not is the question.

It's inside the nose of the starter and you have to take it apart to fix it. There are starter rebuild parts available also, but first you have to get it apart.

KD9JUR

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750steve
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Re: KZ750 Twin Won't Start

11 Sep 2011 06:37 - 11 Sep 2011 06:40

#475875

Thanks again Steve. Where can the rebuild kits be bought? *EDIT* Found them.

I'll prob try to get the 1 on ebay tonight & a rebuild kit so that I know all inside is ok.

07 ZX6R Race Bike
1977 Z750 B2 Twin
1976 Z650 B1

Last edit: 11 Sep 2011 06:40 by 750steve.

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750steve
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Re: KZ750 Twin Won't Start

11 Sep 2011 10:44 - 11 Sep 2011 10:45

#475888

No eBay APP ID and/or Cert ID defined in Kunena configurationOk, i stripped the starter motor & there was a loose piece in the nose, looked like it was broken off somewhere! Had to cut the outside bolts with a grinder to get them off as they were seized AND painted over!!

I've seen this kit on ebay & the brushes are totally different, how do i install the 2 smaller brushes? When its all apart i'd better just do it all. The 'x' screws that hold the brushes to the outer body have been painted over too & i havent managed to get them out yet, any tips?

07 ZX6R Race Bike
1977 Z750 B2 Twin
1976 Z650 B1

Last edit: 11 Sep 2011 10:45 by 750steve.

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gengomerpyle
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Re: KZ750 Twin Won't Start

11 Sep 2011 10:49

#475890

No eBay APP ID and/or Cert ID defined in Kunena configurationthat kit is for a honda goldwing

750steve wrote: Ok, i stripped the starter motor & there was a loose piece in the nose, looked like it was broken off somewhere! Had to cut the outside bolts with a grinder to get them off as they were seized AND painted over!!

I've seen this kit on ebay & the brushes are totally different, how do i install the 2 smaller brushes? When its all apart i'd better just do it all. The 'x' screws that hold the brushes to the outer body have been painted over too & i havent managed to get them out yet, any tips?

1982 GPZ750R1 ELR
1978 Honda CB750F SuperSport
1971 Honda CB750K
1970 Honda CL100 Scrambler

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750steve
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Re: KZ750 Twin Won't Start

11 Sep 2011 11:43 - 11 Sep 2011 11:50

#475899

gengomerpyle wrote: that kit is for a honda goldwing

From the ebay advert;

Starter repair kit. With brush holder.

Includes bushings, bearings, gaskets, "o" rings, brushes, brush plate, nuts and fiber washers. Use your good case, armature, windings and gear. Save money and keep using your Honda OEM starter.

Note: 2-Brush Mitsuba Units *

Honda Motorcycles

1975-79 GL1000 LTD, Gold Wing

1980-83 GL1100 Gold Wing

1980-83 GL1100 Gold Wing, Interstate, & Aspencade

Yamaha Motorcycles:

1976-79 XS750, E,F,SF,SE

1980-81 XS850, Midnight Special, Venturer

Kawasaki Motorcycles:

1980-83 *KZ650 CSR, LTD

1977-80 *KZ650, SR, Custom

1984-85 KZ700, LTD

1980-83 *KZ750, Spectre

1982 *KZ750, CSR Twin

1982 KZ750, GPZ

1980 *KZ750, LTD-2

1980-83 *KZ750, LTD-4

1983 *KZ750, LTD belt, Shaft

1976-84 *KZ750 Twin

1976-up KZ750B

07 ZX6R Race Bike
1977 Z750 B2 Twin
1976 Z650 B1

Last edit: 11 Sep 2011 11:50 by 750steve.

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gengomerpyle
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Re: KZ750 Twin Won't Start

11 Sep 2011 11:50

#475900

yes i seen that but i wouldnt think a kawasaki starter has the same parts as a honda starter.

750steve wrote:

gengomerpyle wrote: that kit is for a honda goldwing

From the ebay advert;
Starter repair kit. With brush holder.

Includes bushings, bearings, gaskets, "o" rings, brushes, brush plate, nuts and fiber washers. Use your good case, armature, windings and gear. Save money and keep using your Honda OEM starter.

Note: 2-Brush Mitsuba Units *

Honda Motorcycles

1975-79 GL1000 LTD, Gold Wing

1980-83 GL1100 Gold Wing

1980-83 GL1100 Gold Wing, Interstate, & Aspencade

Yamaha Motorcycles:

1976-79 XS750, E,F,SF,SE

1980-81 XS850, Midnight Special, Venturer

Kawasaki Motorcycles:

1980-83 *KZ650 CSR, LTD

1977-80 *KZ650, SR, Custom

1984-85 KZ700, LTD

1980-83 *KZ750, Spectre

1982 *KZ750, CSR Twin

1982 KZ750, GPZ

1980 *KZ750, LTD-2

1980-83 *KZ750, LTD-4

1983 *KZ750, LTD belt, Shaft

1976-84 *KZ750 Twin

1976-up KZ750B

1982 GPZ750R1 ELR
1978 Honda CB750F SuperSport
1971 Honda CB750K
1970 Honda CL100 Scrambler

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750steve
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Re: KZ750 Twin Won't Start

11 Sep 2011 11:50 - 11 Sep 2011 11:52

#475901

No eBay APP ID and/or Cert ID defined in Kunena configurationAlso, the 2nd pic in this advert;
cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem...trksid=p5197.c0.m619

& the pic in this advert are the same.

..........the reason i went for the 1st one is the $20 difference in shipping to the UK

They could all possible be the same internals instead of making different ones? I dunno, just guessing but it does say in the list it will fit my bike. I do see your point though.

07 ZX6R Race Bike
1977 Z750 B2 Twin
1976 Z650 B1

Last edit: 11 Sep 2011 11:52 by 750steve.

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