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Thread: Main drive sprocket off engine (BW350)

  1. #1
    Doink's Avatar
    Doink is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Main drive sprocket off engine (BW350)

    Need advice or recommendations:
    Can't seem to get the correct sprocket for the main drive (at the engine).
    I found a 530-13T that fits but will be held on with a spring clip.

    Should I try to use a drill press to make the two holes in the sprocket so it can bolt into place?
    "If it were easy, everyone would be doing it."
    1987 Yamaha BW350 (dealer find, never oiled or gassed)
    1990 Suzuki DR350 Fat Cat/ Big Wheel conversion
    2011 Suzuki KingQuad

  2. #2
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  3. #3
    Doink's Avatar
    Doink is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Those sprockets are for 520 chains, running fromthe jackshaft to the rear sprocket. The main drive sprocket needs to be 530.
    "If it were easy, everyone would be doing it."
    1987 Yamaha BW350 (dealer find, never oiled or gassed)
    1990 Suzuki DR350 Fat Cat/ Big Wheel conversion
    2011 Suzuki KingQuad

  4. #4
    tri-shee is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    You should be able to get them through Yamaha . I bought all of my sprockets for my bw 350 from yamaha .

  5. #5
    Doink's Avatar
    Doink is offline At The Back Of The Pack Arm chair racerFirst time rider
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    No go on Yamaha dealers in my area. I sourced parts that will work (though not OEM) and that's what I will use. But as I said before, will drilling the sprockets for the bolt-on ability weaken or otherwise alter the integrity of the sprocket?
    "If it were easy, everyone would be doing it."
    1987 Yamaha BW350 (dealer find, never oiled or gassed)
    1990 Suzuki DR350 Fat Cat/ Big Wheel conversion
    2011 Suzuki KingQuad

  6. #6
    tri-shee is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    They aready make them for other bikes . I don't see why it would hurt .

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