Starter wont grab
- david-b
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Starter wont grab
02 Jan 2015 12:49
Happy New Year Everyone!
First, the back story. Ever since I picked up my KZ750, when starting, the starter sounds like it slips every now and then. Can press start and as it's cranking, sometimes it would stop spinning the motor and just spin the starter. When the weather gets colder, it would take more and more cranking to get it to turn over. In the process of it taking longer, the starter would do the same as above, keep slipping. Sometimes it would eventually turn over, other times not. I'm assuming the colder weather was making the motor harder to turn, and in return makes the starter work harder. As this past season came to a close, the starter started slipping even when warmer and eventually barely even grabs the motor anymore.
I pulled the starter, and that looks fine. The teeth are good and it spins and looks like it engages fine. So the question is, is it the gear going to the motor? I looked at the manual, it seems like its a good amount of work to get this job done, where basically everything has to come out through the bottom of the motor. Also, the clutch has to come out according to it which doesn't sound fun either.
So the question, is the gear what this problem sounds like? And I'm assuming someone here has replaced it/them before. How tips or ease of install? I appreciate it a ton! Thanks
First, the back story. Ever since I picked up my KZ750, when starting, the starter sounds like it slips every now and then. Can press start and as it's cranking, sometimes it would stop spinning the motor and just spin the starter. When the weather gets colder, it would take more and more cranking to get it to turn over. In the process of it taking longer, the starter would do the same as above, keep slipping. Sometimes it would eventually turn over, other times not. I'm assuming the colder weather was making the motor harder to turn, and in return makes the starter work harder. As this past season came to a close, the starter started slipping even when warmer and eventually barely even grabs the motor anymore.
I pulled the starter, and that looks fine. The teeth are good and it spins and looks like it engages fine. So the question is, is it the gear going to the motor? I looked at the manual, it seems like its a good amount of work to get this job done, where basically everything has to come out through the bottom of the motor. Also, the clutch has to come out according to it which doesn't sound fun either.
So the question, is the gear what this problem sounds like? And I'm assuming someone here has replaced it/them before. How tips or ease of install? I appreciate it a ton! Thanks
/Dave
2013 Chevy Sonic LT 1.4L Turbo
1982 Kawasaki KZ750-H3 LTD
1975 Monte Carlo 400sbc
2013 Chevy Sonic LT 1.4L Turbo
1982 Kawasaki KZ750-H3 LTD
1975 Monte Carlo 400sbc
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- KZQ
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Re: Starter wont grab
02 Jan 2015 13:40 - 02 Jan 2015 13:49
Hi David,
Your starter clutch is failing. I'll look about for a discussion about it and add it to this post in a few minutes.
Bill
Here's one:
www.kzrider.com/forum/2-engine/596754-co...r-clutch-wear#656562
Here's another. The starter clutches on the 550's, 650's and 750 fours are very similar:
www.kzrider.com/forum/2-engine/595515-kz...tarter-clutch#655091
Your starter clutch is failing. I'll look about for a discussion about it and add it to this post in a few minutes.
Bill
Here's one:
www.kzrider.com/forum/2-engine/596754-co...r-clutch-wear#656562
Here's another. The starter clutches on the 550's, 650's and 750 fours are very similar:
www.kzrider.com/forum/2-engine/595515-kz...tarter-clutch#655091
www.KZ1300.com
Riders:
1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Valkyrie, 2009 Yamaha Roadliner S. 1983 GL 1100
Projects:
1985 ZN1300
Riders:
1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Valkyrie, 2009 Yamaha Roadliner S. 1983 GL 1100
Projects:
1985 ZN1300
Last edit: 02 Jan 2015 13:49 by KZQ.
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- !Seymore
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Re: Starter wont grab
02 Jan 2015 20:49
David, what oil are you using? Hope it's 10-40 that JASO-MA certified.
C.
79' KZ650-D2 [fsm] (Max)
83' KZ750-F1 LTD [clymers] (Kay)
82' KZ1100-D1 Specter (another project)
78' KZ650-B2a (J&H, A Project)
91' KZ1000-P (P = parts)
83' KZ750-F1 LTD [clymers] (Kay)
82' KZ1100-D1 Specter (another project)
78' KZ650-B2a (J&H, A Project)
91' KZ1000-P (P = parts)
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- david-b
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Re: Starter wont grab
03 Jan 2015 09:56
Some good reading in those threads. I'll go through them and check it out,
So would the starter clutch be #3 or #14??
The oil is what was recommend across this board (don't remember which weight) but for sure JASO-MA certified.
So would the starter clutch be #3 or #14??
The oil is what was recommend across this board (don't remember which weight) but for sure JASO-MA certified.
/Dave
2013 Chevy Sonic LT 1.4L Turbo
1982 Kawasaki KZ750-H3 LTD
1975 Monte Carlo 400sbc
2013 Chevy Sonic LT 1.4L Turbo
1982 Kawasaki KZ750-H3 LTD
1975 Monte Carlo 400sbc
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Re: Starter wont grab
03 Jan 2015 10:45 - 03 Jan 2015 10:46
The starter clutch is comprised of 9, 10, 11 &12. There are of course three each of the 10, 11 & 12. Pay particular attention to part #14 as it has the hub or clutch surface upon which the rollers bite. I've never done the starter clutch on a 750 four but I have done a 550. It can be done with the engine still in the frame.
Good luck!
Bill
Good luck!
Bill
www.KZ1300.com
Riders:
1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Valkyrie, 2009 Yamaha Roadliner S. 1983 GL 1100
Projects:
1985 ZN1300
Riders:
1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Valkyrie, 2009 Yamaha Roadliner S. 1983 GL 1100
Projects:
1985 ZN1300
Last edit: 03 Jan 2015 10:46 by KZQ.
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- spdygon
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Re: Starter wont grab
03 Jan 2015 11:09
#9....inside the three slots......are springs , bushing ,etc..not shown on this diagram
1982 GS1000sz Katana ( #15...17K Miles)
1982 GS1000sz Katana ( # 297....7100k Miles)
1978 Kz1000 Z1R. 10K Miles1
1978 kz1000 z1r 27k miles
1977 KZ 1000 A ( Project ) 54K Miles
1976 Kz900A4 (Red)21K miles
1976 Kz900A4 ( Red)7500 miles
1974 Z1 900 project
1982 GS1000sz Katana ( # 297....7100k Miles)
1978 Kz1000 Z1R. 10K Miles1
1978 kz1000 z1r 27k miles
1977 KZ 1000 A ( Project ) 54K Miles
1976 Kz900A4 (Red)21K miles
1976 Kz900A4 ( Red)7500 miles
1974 Z1 900 project
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- Tyrell Corp
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Re: Starter wont grab
03 Jan 2015 11:13KZCSI wrote: I've never done the starter clutch on a 750 four but I have done a 550. It can be done with the engine still in the frame.
Good luck!
Bill
Did you work from underneath or put the bike on it's side? Never done this in-frame, always seems a very awkward job even when the motor is on the bench. I even heard of a bike turned upside down to do it! :S
1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces
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- SWest
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Re: Starter wont grab
03 Jan 2015 11:41
Might be a sloppy chain.
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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- Tyrell Corp
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Re: Starter wont grab
03 Jan 2015 12:39swest wrote: Might be a sloppy chain.
I've heard of camchains jumping a tooth, even heard of a couple of primary chains breaking but never primary chains slipping? Even new they have quite a lot of slack in them. After 50k miles they are usually getting noisy.
Starter clutch slipping has a distinctive screech to it without the sound of the engine turning over, it was quite a common repair back in the day.
1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces
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- KZQ
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Re: Starter wont grab
03 Jan 2015 12:40Tyrell Corp wrote:KZCSI wrote: I've never done the starter clutch on a 750 four but I have done a 550. It can be done with the engine still in the frame.
Good luck!
Bill
Did you work from underneath or put the bike on it's side? Never done this in-frame, always seems a very awkward job even when the motor is on the bench. I even heard of a bike turned upside down to do it! :S
Attachment DSC06569.jpg not found
swest: There is no chain associated with the starter. The primary chains typically outlast the rest of the bike.
Bill
www.KZ1300.com
Riders:
1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Valkyrie, 2009 Yamaha Roadliner S. 1983 GL 1100
Projects:
1985 ZN1300
Riders:
1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Valkyrie, 2009 Yamaha Roadliner S. 1983 GL 1100
Projects:
1985 ZN1300
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- Zephyrrider
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Re: Starter wont grab
03 Jan 2015 13:42 - 03 Jan 2015 13:44
Fucking awful noise. Wouldn't say easily done in the frame but have done it a couple of times - real convenient if you have kiddie sized hands. Get the Missus in there :evil:
Get all new gear - dont try and skimp on this one - you dont want to do twice.
Hopefully you have a centrestand at the very least.
Get all new gear - dont try and skimp on this one - you dont want to do twice.
Hopefully you have a centrestand at the very least.
Mick
1994 ZR750 Zephyr C4.
1994 ZR750 Zephyr C4.
Last edit: 03 Jan 2015 13:44 by Zephyrrider.
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- SWest
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Re: Starter wont grab
03 Jan 2015 15:02
The old Honda's had chain drive starters and when thy slopped the rotor would rock back and forth with it. I've replaced the chain, end of problem. I always hated primary chains. God I love my Z1.
Steve
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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