KZ650 Idle thumb screw

  • bloglos
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KZ650 Idle thumb screw

09 Jun 2010 11:01
#374634
I have a 78 KZ650 which is in great shape and runs very well. When it's warm, it's idling at around 1600rpm and the manual and everything I read online is telling me it should idle at 950-1050. Could someone please tell me the location of the Idle thumb screw? Or is it more complicated then that?
78 KZ650 C2 - Runner
77 KZ650 B1 - Project

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  • bloglos
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Re: KZ650 Idle thumb screw

09 Jun 2010 11:02
#374635
Oh its a C2 if that is any more help. Any advice would be greatly appreciated.
78 KZ650 C2 - Runner
77 KZ650 B1 - Project

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  • kz750saskatoon
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Re: KZ650 Idle thumb screw

09 Jun 2010 12:42
#374653
Check between the two centre carburetors near the bottom on the side opposite to the engine.
1981 KZ750-H2
Saskatoon, SK

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  • Patton
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Re: KZ650 Idle thumb screw

09 Jun 2010 15:27
#374683
Per kawasaki.com, it's similarly located to this example.

Good Fortune! :)

1973 Z1
KZ900 LTD

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Re: KZ650 Idle thumb screw

10 Jun 2010 06:02
#374834
bloglos wrote:
I have a 78 KZ650 which is in great shape and runs very well. When it's warm, it's idling at around 1600rpm and the manual and everything I read online is telling me it should idle at 950-1050. Could someone please tell me the location of the Idle thumb screw? Or is it more complicated then that?

Depending on the state of tune of your engine, the warm idle speed will vary. Under "perfect" conditions the idle speed is about 1000rpm. My bike likes to idle at about 1200-1400rpm's. You'll find that your motor won't idle that low. See where it wants to be. B)
1980 KZ650F1, Bought new out the door for $2,162.98!

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