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Fixing a weak starter 20 Jul 2021 06:04 #852103

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Hello experts!

So I recently took my '83 KZ700A1 out of storage and need to fix its very weak starter before using it and I was hoping someone could give me some hints..

I have pulled the cables from the battery (they look fine in both ends) and swapped the battery out with a new one but that made no difference. It is still very weak and can only start once or twice on a full battery (still plenty of power left if measured). I fixed the poor start of the old Suzuki GS450S by ordering a starter repair kit on advice from a Suzuki mechanic but I'm not seeing any kit for the KZ700/750 the places I normally order from. Anyone know what I should order or maybe more important how to find out what needs to be swapped out? 

 
-[ KZ700-A1 '84 ]-

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Last edit: by TheForumTroll. Reason: changed model year to match reality

Fixing a weak starter 20 Jul 2021 08:03 #852106

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Z1b1000 1975 Z1b
Opinions expressed by me do not reflect those of the the staff or members
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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Fixing a weak starter 20 Jul 2021 08:10 #852108

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Give them a call. These are for 83-85 KZ 700 LTD
ricksmotorsportelectrics.com/Starter-Motor-Brushes-70_102
Z1b1000 1975 Z1b
Opinions expressed by me do not reflect those of the the staff or members
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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Fixing a weak starter 20 Jul 2021 08:34 #852112

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Just to completely rule out wiring.
meter on DC V

black probe on battery negative post(post being the metal part of battery not the cable)
red probe on battery positive post
crank starter
note voltage

black probe on starter case
red probe on positive post on starter body
crank starter
note voltage

voltages should be within 0.5V of each other

Voltage should be at least 9.5 V
if both below 9.5v-battery is the problem
if both voltages are different by more than 0.5v-cable issue
if both voltages are within 0.5V and you still have the issue---the starter is the issue
81-KZ440-D2.
Louis Dudzik's GM HEI ignitor conversion installed 2015 s3.amazonaws.com/gpzweb/Ignition/GPZgmHEImod.html
Motogadget m-unit blue installed 2017.
LIC, NY
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Fixing a weak starter 20 Jul 2021 10:09 #852116

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I'm a bit too far away to call the US but thank you. Now I have some things to work with. I just pulled the carbs so gotta wait a bit until they are clean and remounted though.
-[ KZ700-A1 '84 ]-

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Fixing a weak starter 20 Jul 2021 10:45 #852119

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You can still test the starter without the carbs installed.
Just make sure you have no gasoline near the starter.
81-KZ440-D2.
Louis Dudzik's GM HEI ignitor conversion installed 2015 s3.amazonaws.com/gpzweb/Ignition/GPZgmHEImod.html
Motogadget m-unit blue installed 2017.
LIC, NY

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Fixing a weak starter 20 Jul 2021 11:55 #852127

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Well I made a mess of the cables to get room so sadly nothing works atm. Getting them cleaned tomorrow though so not much down time
-[ KZ700-A1 '84 ]-

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