78 kz750 kill/start switch

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21 Jun 2012 18:53 #530817 by KZjosh
78 kz750 kill/start switch was created by KZjosh
i recently got a 78 kz 750. uns good and every thing only works when i kick it though. the bar switch assembly soes nothing. the po pulled i want to say a starter relay or something off the side and just hot wired it to start with the key on. and i dont want to do that. i want every thing to work as advertised. so my question is am i able to get a new oem replacement switch assembly for the start/kill/run? having trouble finding them. or are they easy to fix? im new to street bikes. i dirtbike all the time and for meny years and they are simple no wiring almost. trying to learn. i did come across a uneversal switch se t up for like 25$ at

www.airtech-streamlining.com/miscpages/handlebars.html#price

any imput is apriciated.

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21 Jun 2012 20:11 #530831 by MFolks
Replied by MFolks on topic 78 kz750 kill/start switch
Starter Solenoid/Motor Checkout Procedure

Some simple steps to determine what is working and what's not:

1.Fully charge and test the battery(most bike shops can load test the battery, and then use a floating ball hydrometer to check specific gravity in the charged cells).

2.Clean all battery terminals of corrosion.

3.Tighten all starting related connections(Positive RED(+) battery terminal, Negative BLACK(-)terminal) and from the terminal to the engine case. All connections must be clean and tight. If the cables feel “Crunchy” when flexed, they may have corrosion inside the insulation, requiring replacement.

4.Clean the cable from the starter solenoid to the starter motor.

5.Clean and check the "bullet connectors" going to the coil side of the starter solenoid.

6.Try again to start the bike, keep in mind some Kawasaki’s have a clutch interlock to prevent cranking the engine while it’s in gear, so the clutch lever must be squeezed.

7.If no luck, go to step #8

8.Wearing eye protection, bridge with pliers or a screwdriver the two heavy duty(large)terminals on the solenoid. If the bike cranks, your solenoid may be bad.

9. If the starter won’t turn over, one of several things has happened; The starter motor has seized due to brushes binding up, lack of lubrication in the bushings of the motor, the battery is weak , the engine has seized or it could be a combination of any of the above. A website for starter motors is:

A. www.psep.biz/store/mitsuba_starter_motors_page_2.htm

B. www.nationsautoelectric.com/Kawasaki.html

C. www.whitedogbikes.com/cat--Kawasaki-Star...-Starter-Motors.html

D. www.ricksmotorsportelectrics.com/starters.php

E. www.dbelectrical.com/

F. www.stockers.com/index .

G http://.www.nationsautoelectric.com/Kawasaki.html

H http:// www.dbelectrical.com/


10.The dealer may want $$$ for a new solenoid, but take your old one along and visit the nearest riding lawn mower shop. They have solenoids for about $15 that with a little work will fit. Be aware that the new solenoid from the lawn mower shop may require a ground wire for it to work.

11. I’d recommend upgrading from the existing battery cables to at least 6 gauge welding cables.
They are available in two colors(RED and BLACK) have more flexibility due to being constructed with finer conductors, and will fit in tighter areas.

12. The welding cable is sold by the foot, so take careful measurements or bring your old cables along. Most battery shops might be able to supply the cable too, so call to find out. The battery shop should be able to crimp/swage on the end of the welding cable the terminal ends or lugs using either a dedicated crimping machine or a tool that looks like a bolt cutter that has special dies to terminate the cable.

1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

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21 Jun 2012 20:48 #530836 by zig
Replied by zig on topic 78 kz750 kill/start switch
look on ebay i see alot of parts for your bike put in 1978 kz 750 alot of stuff will op up i just bought my kz750ltd 1980 whole right side with starter switch for 21.00 and it all works check it out i also before this went to advance auto and bought a 60amp push switch for 10.00 and some hevay duty wire and hot waried it in all i did was put it in the switch linne with a cuppler worked great for a year until i got the compplete set up

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21 Jun 2012 22:17 - 21 Jun 2012 22:21 #530862 by Patton
Replied by Patton on topic 78 kz750 kill/start switch
There's a wiring diagram in KZrider's FILEBASE.

Attachment filebasekzr.jpg not found




Here's a direct link:
www.kzrider.com/filebase/doc_download/283-z750b3



If the push-button starter switch is corroded inside, it may sometimes be cleaned and restored to serviceable condition.

Good Fortune! :)

1973 Z1
KZ900 LTD
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Last edit: 21 Jun 2012 22:21 by Patton.

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