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Pilot adjusting screw on '78 Kz1000? 22 May 2019 06:51 #804353

  • zed1015
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Polara1974 wrote: Hi all, this is an old thread but I've been playing with my carbs and I was confused about not seeing a Pilot fuel adjustment, so I came here for information and found this post.

My bike is an 1980 Kawasaki Z1000A4 MKII (non USA , belive to be for Japan-Europe market), the carbs are Mikuni VM28SS non pumpers.


Ok, enough introduction, now for the question. Does this carbs only have AIR pilot adjustments and not FUEL pilot adjustments? could this be like this? I know for sure that it has AIR idle adjustment only because this is on the air side of the carb.

I thought that they did also have a FUEL adjustment on the bottom, but nothing there, not even pluged. Kind of lost here. So you can only adjust the idle fuel by changing the R15 idle jet and by playing around with the air side screw?

Regards, Martin


Only Suzuki GS 750/850/1000 Mikuni VM 26/28's have both air and fuel mix screws.
The KZ's 26/28's have either one or the other.
Average base line for your air screws is between 1 -1/4 to 1-3/4 turns out from lightly seated but given their age and possible wear they may be happier well above or below that.
The usual procedure is to start with them midway at 1-1/2 turns out and go from there.
AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
kzrider.com/forum/23-for-sale/611992-air-corrector-jets-





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Pilot adjusting screw on '78 Kz1000? 24 May 2019 06:22 #804489

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zed1015 wrote: Only Suzuki GS 750/850/1000 Mikuni VM 26/28's have both air and fuel mix screws.
The KZ's 26/28's have either one or the other.
Average base line for your air screws is between 1 -1/4 to 1-3/4 turns out from lightly seated but given their age and possible wear they may be happier well above or below that.
The usual procedure is to start with them midway at 1-1/2 turns out and go from there.


Hi Zed1015, thanks for your reply. It certanly looked odd to me to have only one or the other. And you addressed my next question already about the air screws base settings.

Thnaks!

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Pilot adjusting screw on '78 Kz1000? 24 May 2019 06:28 #804490

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