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TOPIC: Kz750 starting problem

Kz750 starting problem 20 Feb 2019 02:53 #798911

  • Pipes66
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Well,the good news is changing the oil to Motul atv/utv 10w/40 mineral oil has worked wonders for the starter clutch issue. I’m not getting any slippage,so far I hasten to add!.
The reason I chose the above oil is it’s proper mineral oil,opie oils,the co that sold it assured me it’s fine if that’s what I wanted to use but couldn’t understand why I wouldn’t use a semi. He obviously doesn’t own a z air cooled!
And the oil was inexpensive,I’m losing oil past the gearchange seal and constantly topping up, I am experimenting with a possible fix on that........

I’m not happy with the choke situation though,I want to be able to pull the choke full on and press the starter and have it fire right up but the choke doesn’t seem to do a lot. I know the carbs are clean,I’ve had them apart so many times. I’m wondering if altering the pilot air screws from 2 to 2.5 or 3 turns out might help?
Edit: I’ve just tried going from 2 to 3 turns-no difference,so I went to 4-no difference,then I went back to 1.5 turns out and it wouldn’t start on full choke. Once started it will tick over best on half choke,at 1.5 turns out it cuts out if I pull out to full from half.
1983 kz750 F1 Ltd Shaft US model

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Last edit: by Pipes66.

Kz750 starting problem 20 Feb 2019 06:26 #798924

  • gordone
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Always a really good feelig when things turn out :)
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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Kz750 starting problem 20 Feb 2019 08:44 #798932

  • Pipes66
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Sure is fella, amazing really.
Now the choke:(
1983 kz750 F1 Ltd Shaft US model

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Kz750 starting problem 20 Feb 2019 15:13 #798948

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Pipes66 wrote: Sure is fella, amazing really.
Now the choke:(


I have purchase Gunson colortune on Ebay, have not been able to test it yet.

But if you think the mix screw need to be tunned, it can maybe a option for you to?
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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Kz750 starting problem 21 Feb 2019 12:14 #798996

  • Pipes66
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Maybe
1983 kz750 F1 Ltd Shaft US model

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