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Thread: carburetor identification

  1. #1
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    carburetor identification

    Can anyone identify the model of my Mikuni Carb? I've been reading all the threads and most of you have VM series and mine looks different. The numbers on the side don't seem to match any Mikuni models when i google it. The bike is a 2003, SR-400. This is my first SR and i'm still getting familiar with it. Thank you
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  2. #2
    Senior Member MadMax's Avatar
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    Going by year, that should be a Mikuni BSR33.

  3. #3
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    Thank you for the ID and your comments on the rubber. that gives me somewhere to start, -i'll open it up this weekend and take a look. I can't seem to be able to rev over 5000rpm.
    Last edited by Old Kiwi; 01-09-2018 at 04:19 PM.

  4. #4
    You are able to buy different jets for the carbs and I have included a Japanese parts breakdown for the carb as well. Hope it's of some use...

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    One of mine...

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    SR
    ...'Any unnecessary items on the bike, that it doesn't really need, shouldn't be there!'. (Café racers creed). SR..

  5. #5
    Senior Member tzrider's Avatar
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    I can't seem to be able to rev over 5000rpm.
    Can also be an ignition timing problem or something with the CDI timing curve.
    Yamaha SR500 48T - Yamaha Tricker XG 250 - Suzuki SV650 MK1

  6. #6
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    Thanks. I've got a rebuild kit on order, i'll fit that and then if i still have a problem i'll look at the CDI.

  7. #7
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    thanks for the parts drawing. Your carb looks a lot cleaner than mine. I've got a carb kit on order, i expect it will take another week to get here -there is nothing stocked for this carb in NZ.

  8. #8
    No worries, hope it's of use...my carb has not done much work and has been really looked after...like the rest of the bike...

    SR
    ...'Any unnecessary items on the bike, that it doesn't really need, shouldn't be there!'. (Café racers creed). SR..

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