Pilot jet plugs

Hi all, I've been chasing a fluffy hesitant feeling on initial throttle openings. I've done valve clearances and a good carb clean ( twice ) 
the pilot jet next to the main jet has a small metal plug with an o ring, they're really flat and are a really loose fit, they literally fall out !! ive since found out that they should be a snug fit, ive looked on z power and they dont sell them. Anyone know of somewhere i could source them or rubber equivalents in the uk ? My bike is a 81 kz1000 csr using mikuni bs 34 carbs. 

This size O-ring works...

Thank you Nessism, your always a great help.  Being a bit green, how do I use that information  ? Sorry to sound dim but this is all new to me, loving learning though 👍

Look in your local market for some -006 O-rings.  I have kits for sale, also.

On this topic, on my GPz750's BS34's, I do not have plugs over the pilot jets. I bought the bike in good running condition 9 years ago and the first time I pulled the carbs apart early last year, there were no plugs there. Are they important? I also have a stumble off idle and hesitation to starting and idling without choke until the motor is warm.

84_GPz750 wrote:

On this topic, on my GPz750's BS34's, I do not have plugs over the pilot jets. I bought the bike in good running condition 9 years ago and the first time I pulled the carbs apart early last year, there were no plugs there. Are they important? I also have a stumble off idle and hesitation to starting and idling without choke until the motor is warm.

Some versions of BS34's use the plugs, and others don't.  The ones that do, have a cross drilled passage from the main over to the pilot.

Thanks again Nessism. I've looked at some online, are all .006 o rings the same ? Only reason I ask is the ones I've seen online are a "round" profile whereas if you look at my picture, mine appear "flat"
Is that just because mine are old and have gone that shape ??

I have seen online black plastic plugs for mikuni carbs, these would be a direct replacement  ? I suppose it only has to act as a seal right ?

Kawasaki O-Ring 92055-1059

Thanks Daveo, I'll look into it 👍

Nitrile O-rings.  

Z power contacted saying they do them ( £7 each, ouch ) but again they appear round profile, mine seem to be flat ??