Mikuni Bs34 carb jet problem?

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14 Jun 2017 15:47 #764381 by Lnovak7493
Mikuni Bs34 carb jet problem? was created by Lnovak7493
Ok so im going through my carbs for my 1000 and after taking the bowls off i see this. The carbs dont have a pilot jet? Why and how does this work? Also is this correct?

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The carbs ARE vaccum diaphragm carbs
1981 kawasaki kz1000-k1 ltd

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14 Jun 2017 15:48 #764382 by Lnovak7493
Replied by Lnovak7493 on topic Mikuni Bs34 carb jet problem?
Im questioning the metal plug where a pilot jet would normally be
1981 kawasaki kz1000-k1 ltd

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14 Jun 2017 18:50 - 14 Jun 2017 18:51 #764397 by Patton
Replied by Patton on topic Mikuni Bs34 carb jet problem?
Would guess that there's a pilot jet screwed in underneath the plug; and thinking it's anybody's guess what's holding the plug in position over the pilot jet.

Good Fortune! :)
1973 Z1
KZ900 LTD
Last edit: 14 Jun 2017 18:51 by Patton.
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  • SWest
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14 Jun 2017 18:57 #764399 by SWest
Replied by SWest on topic Mikuni Bs34 carb jet problem?
It looks to be held in by the float bowl.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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14 Jun 2017 21:41 #764415 by Lnovak7493
Replied by Lnovak7493 on topic Mikuni Bs34 carb jet problem?
i thought that also at first but looking at it, its to far away from the bottom of the bowl. I believe its either press fitted or threads in. does anyone know for sure if that is supposed to be there in my exact carbs?
1981 kawasaki kz1000-k1 ltd

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  • ThatGPzGuy
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15 Jun 2017 03:39 #764420 by ThatGPzGuy
Replied by ThatGPzGuy on topic Mikuni Bs34 carb jet problem?
It's held in by an o-ring. Put a drop of oil around it and pull it straight out with a set of pliers.
Jim
North GA
2016 Yamaha FJR1300ES
1982 GPz750 R1
1974 Kawasaki H1
1976 Kawasaki KZ400
1979 Yamaha XS650 cafe'
2001 KZ1000P
2001 Yamaha YZ426
1981 Honda XR200 stroked in an '89 CR125 chassis
1965 Mustang
1967 Triumph GT6
1976 Bronco
"If you didn't build it, it's not really yours"
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15 Jun 2017 05:12 #764425 by daveo
Replied by daveo on topic Mikuni Bs34 carb jet problem?

ThatGPzGuy wrote: It's held in by an o-ring. Put a drop of oil around it and pull it straight out with a set of pliers.



Light weight oil, or little gasoline works too. For me, these plugs and o-rings were a pita royal. Even with extreme care gripping the plug (while removing) a couple would always get mangled and need to be replaced...the metal is very soft.

images.cmsnl.com/img/products/plugpilot-...20661087-01_e7ec.jpg

Have fun. :pinch:
1982 KZ1100-A2
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15 Jun 2017 08:00 #764439 by Lnovak7493
Replied by Lnovak7493 on topic Mikuni Bs34 carb jet problem?
Will removing them have any performance gain? Or will it negatively affect how it runs?
1981 kawasaki kz1000-k1 ltd

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15 Jun 2017 09:42 #764444 by mopguy
Replied by mopguy on topic Mikuni Bs34 carb jet problem?
They need to be plugged as the pilot is fed by an opening in the main jet shaft.
I have a 1980 Kawasaki KZ750 Ltd. I bought new. I recently managed to get it out of my garage after 28 years and put it on the road again (2010). I feel like a kid all over again. Since I have acquired 3 78 KZ1000 Ltd, 1 1981 KZ1000 Ltd, and another 1980 KZ750 Ltd. Love the LTD's.
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15 Jun 2017 19:22 #764477 by Lnovak7493
Replied by Lnovak7493 on topic Mikuni Bs34 carb jet problem?
Thank you for the direct answer man. I understand slide carbs but diaphragm carbs are a little different. I like the fact that the diaphragm carbs basically change the air to fuel ratio from the atmospheric pressure so you dont have to jet it for different elevations
1981 kawasaki kz1000-k1 ltd

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16 Jun 2017 17:57 #764548 by Lnovak7493
Replied by Lnovak7493 on topic Mikuni Bs34 carb jet problem?
Ok so i tried starting it and it didnt start. It was flooded after i checked the plugs. What are the carb air screw settings supposed to be? I started it at 1 1/2 and it wasnt starting at all so i changed it to 2 1/4 which is what it was at before i cleaned and adjusted the floats. I also put new intake boots on it before i threw the carbs back on.
1981 kawasaki kz1000-k1 ltd

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17 Jun 2017 08:21 #764574 by Lnovak7493
Replied by Lnovak7493 on topic Mikuni Bs34 carb jet problem?
Anybody know the air screw settings?
1981 kawasaki kz1000-k1 ltd

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