83 KZ750 out of moth balls

trexmon
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83 KZ750 L3

03 Nov 2015 17:07 #697096 by trexmon

83 KZ750 out of moth balls was created by trexmon

It's been sitting in my garage for over 25 years! Got it running just banging my head against the wall trying to get carbs sorted out. Running good except won't idle or run at low RPM's. Guess I have to pull the carbs AGAIN and reclean the pilot areas.

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SWest
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10 22 2014

03 Nov 2015 17:23 #697099 by SWest

Replied by SWest on topic 83 KZ750 out of moth balls

Pics of plugs?
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

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JR
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03 Nov 2015 17:25 #697100 by JR

Replied by JR on topic 83 KZ750 out of moth balls

Welcome to the site. Looks like an L3 or 4.
Love that style and colour. Have patience with the carb. You'll get there eventually. Guitar string or nylon bristle + compressed air might help.

1980 kz750E1, Delkevic exhaust

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trexmon
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83 KZ750 L3

03 Nov 2015 17:49 #697103 by trexmon

Replied by trexmon on topic 83 KZ750 out of moth balls

Pic of plugs attached

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SWest
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10 22 2014

03 Nov 2015 18:07 #697109 by SWest

Replied by SWest on topic 83 KZ750 out of moth balls

After sitting so long rough running can be expected. Bear in mind the valve guide seals are probably hard and if not leaking, they soon will.
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

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Nessism
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03 Nov 2015 18:30 #697110 by Nessism

Replied by Nessism on topic 83 KZ750 out of moth balls

This tutorial was centered on the Suzuki version of the BS CV carbs, but the Kawasaki version is almost identical. Read through and you may get some tips.

Remember: short cuts are long cuts when it comes to carbs. Biting the bullet and tearing the carbs down and doing the job right will save time in the end (although most people don't believe it until they fail a couple three times). zeus.mtsac.edu/~cliff/storage/gs/Mikuni_...Rebuild_Tutorial.pdf

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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trexmon
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83 KZ750 L3

03 Nov 2015 18:59 #697112 by trexmon

Replied by trexmon on topic 83 KZ750 out of moth balls

Great tutorial! Have 1 question. Do pilot screws need to be covered when done adjusting (after you have drilled & removed cover) and if so with what?

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mjg15
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03 Nov 2015 19:05 #697115 by mjg15

Replied by mjg15 on topic 83 KZ750 out of moth balls

L3 is a great bike, you are lucky to find one. Check for vacuum leaks at manifolds. Thats common after sittng so long, and don't be surprised if it springs leaks at head and base gaskets when you start running it

'80 Z750fx
'81 KZ550A
'81 GPz550's, Too many!
'82 KZ1000R
'82 GPz750
'90 ZR550

Project photo album: s163.photobucket.com/albums/t289/mg15_ph...GPz-ZR550%20project/
s163.photobucket.com/albums/t289/mg15_ph...current=DSC01286.jpg

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ThatGPzGuy
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More Sparky than Speed Racer

04 Nov 2015 01:42 #697134 by ThatGPzGuy

Replied by ThatGPzGuy on topic 83 KZ750 out of moth balls

trexmon wrote: Great tutorial! Have 1 question. Do pilot screws need to be covered when done adjusting (after you have drilled & removed cover) and if so with what?

Nope. leave 'em.

Jim
North GA
2016 Yamaha FJR1300ES
1982 GPz750 R1
1974 Kawasaki H1
1976 Kawasaki KZ400
1979 Yamaha XS650 cafe'
2001 KZ1000P
2001 Yamaha YZ426
1981 Honda XR200 stroked in an '89 CR125 chassis
1965 Mustang
1967 Triumph GT6
1976 Bronco
"If you didn't build it, it's not really yours"

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trexmon
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83 KZ750 L3

04 Nov 2015 04:00 #697147 by trexmon

Replied by trexmon on topic 83 KZ750 out of moth balls

1 other unrelated question. Under the gas tank where the fuel level sensor connects there is a hose outlet. I have nothing connected to it. Where should hose run? Can't find anything in the manual.
Thanks for all the info.

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Nessism
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04 Nov 2015 05:08 #697159 by Nessism

Replied by Nessism on topic 83 KZ750 out of moth balls

trexmon wrote: 1 other unrelated question. Under the gas tank where the fuel level sensor connects there is a hose outlet. I have nothing connected to it. Where should hose run? Can't find anything in the manual.
Thanks for all the info.

There is a leak catcher funnel cup around the sending unit. It's there in case the sending unit seal fails so the fuel doesn't dump on top of the hot engine. You should get a long piece of hose and route it down by the rear wheel, to the side so if it were to dump it wouldn't soak your rear tire.

The following user(s) said Thank You: trexmon

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GPzMOD750
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04 Nov 2015 07:43 #697187 by GPzMOD750

Replied by GPzMOD750 on topic Re:83 KZ750 out of moth balls

Check your carb holders (boots) for vacuum leaks. High idle that can't be adjusted down is a classic symptom. I spray carb cleaner around the boots while it's running if the idle drops or it dies that's your issue.

82 GPz750/KZ750R1
82 KZ1100A2

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83 KZ750 out of moth balls

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