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Mikuni Jet Size

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Hello all any body any idea what the jet sizes and needel should be for the mikuni carb? For the 198A

Hi Bondy. I`d give In Motion a ring and ask them as they sell Mikuni`s for Bultaco`s. For those who don`t know a M 198 A is a 1979ish 250 Sherpa T. These were the all blue ones with black fork bottoms and the first ones with no frame tubes under the engine. Over here they were the 1979 model and the last ones to come over to Australia. We didn`t get the M 199/8 B`s. All of the ones over here were imported privately.

  • Author

Hi thaks sorry I didnt put the model off the bike its 2 bikes really both 250s 1 is the 198A the other 198B id off both would be jeted the same?however I have put an Amal carb on the 198A since it runs alot beter but would like to use the mikuni on my 198B.

Mine came from in motion and was spot on jetting from the word go. Motocarb in Liverpool also do them jetted to suit

  • Author

Hello stue you any idea what size they are? I can give inmotion a call I just though some body would know.

  • Author

Hello stue got the jet sizes from inmtion ive not tryed the bike yet to busy with other stuff

Bondy,

Here are my jet sizes Mikuni VM26..

VM26

2.0 slide

130 main jet

35 pilot jet

5DP7 needle

O8 needle jet

  • Author

Hello stue cheers mate I got them from inmotion I put a Amal on the 198B runs good with the Amal but thats for my 198A so ive rejeted the mikuni and will try it. Bondy

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