I just put this on Ebay today for anyone interested ?

https://www.ebay.co.uk/itm/167708840853

Thank you

Thanks Al, So it looks like there are 2 different types and designs of carbs but with the same name / reference (BS34). My 1981 KZ1000 CSR has BS34's without coasting enricher diaphragms, but when I search BS34 on Google it shows images of them with and without them. Its unusual for any manufacturer...

Have you set your mixtures with a Colortune Plug ?

If not, its well worth buying or borrowing one as its the only way to get them spot on.

Can anyone confirm how many different types of Mikuni BS34 Carbs there are for 1981 KZ1000 ?

Thanks

Thanks Warrren,

That is exactly how my 4 plugs look too.
I only use E5 fuel.

Thought I was going mad, but obviously its just the way these carbs / bikes run.

Appreciate your help as ever.

I am running a 1981 KZ1000 CSR with BS34 Carbs. Bike is 100% standard other than a Delkevic 4 into 1 which runs on standard jetting. Standard airbox with standard air filter. Carbs are 100% cleaned and refurbished with all standard jets. Float heights spot on by the manual and fluid heights spot on ...

It depends how "stuck" they are. Remove spark plugs. Pour the MMO into each cylinder (use a syringe or pipe with a funnel) Leave at least 24 hours to soak through. Alternatively you can add it to petrol if bike is running. I bought a Z1300 engine that had not been run for years and had no ...

Marvel Mystery Oil works very very well for releasing piston rings.

I have used it with success on numerous bikes in the past.

Looking for a set of 4 chrome or S/S header pipes for a 1981 / 82 Z/KZ1000 J/K/M.

Ideally with collectors as I eventually want a 4 into 2 system using short silencers, so cannot use headers from a 4 into 1 system unless they are straight type.

Please PM me if you can help

Thanks to all above for valued feedback.

Standard coils it is !!

Regards

For a 1981 KZ1000 J/K/M Motor.
Are Dyna Coils and HT Leads worth the expense or not ?
Just trying to make the bike run as well as possible, not anything else.
What OHM rating is best ?
Thanks.

Does anyone on here know of anyone who reconditions old speedo's and tacho's ?

If so could you please confirm contact details.

Thank you

I just put these on Ebay for anyone interested.

https://www.ebay.co.uk/itm/167629382936

NOW SORTED. 24th June 2025. THANKS TO ALL WHO OFFERED HELP. Looking for a choke shaft for my BS34 Mikuni Carbs. This is the one with the Choke Knob on the end. Part Number is 16041-1024 and its common on many Z/KZ1000 Models from 1980 onwards. Not bothered about general condition just as long as it...

Just put this on Ebay for anyone interested ?

https://www.ebay.co.uk/itm/167535770613

Thank you