Bendix Sticking?

Discussion in 'The Workshop' started by Seatonwills, Feb 28, 2022.

  1. Seatonwills

    Seatonwills New Member

    Messages:
    19
    Hi all,
    So, bit of background, last week on the ride home I noticed a bit of a clicking sound and then a loss of power/revs. Made it home but as I was unlocking the gate, it died. Managed to start it again but it sounded like the casings were full of rocks! Took the CVT case off and noticed the belt was stuck and nothing would move. I freed everything up and tried again but this time got nothing. The starter solenoid clicks and there's an electrical whirring and then nothing. The battery and starter show around 13v but the voltage drops to zero when I press the start button.
    Took the cover off again and noticed the bendix was still engaged and there is some wear/damage on the fly-wheel, or whatever its called - big toothed wheel in front of the variator. I took the bendix gear out and tried the button and the starter gear spins up. Bought a new bendix put it back together but same results. It throws the gear out, spins the fly-wheel briefly then stops and doesn't retract. Another click of the start button and it will spin briefly again and stop but the bendix remains engaged.
    I tried to upload video but keep getting error message. Hope this explanation is clear. I am concerned the engine has seized but if it had, surely the flywheel wouldn't turn at all? I have tried the kick start but it won't budge which again, makes me thing engine seized. Anyone got any ideas or advice? My next move is probably going to be to replace the fly wheel gear as I'm wondering if the damage to the teeth on that is causing the bendix to stick. Then the starter motor. Then I'm pretty much out ideas!
    Cheers
     
  2. MARSH

    MARSH Whooooo!

    Messages:
    3,020
    Rides:
    Piaggio Typhoon
    What scooter ?
     
  3. Seatonwills

    Seatonwills New Member

    Messages:
    19
    Apologies, should have included the basics! Its a Baotian BT49 Retro/Tommy, 2011.
     
  4. MARSH

    MARSH Whooooo!

    Messages:
    3,020
    Rides:
    Piaggio Typhoon
    Take transmission cover off, try to turn engine over.
     
  5. Seatonwills

    Seatonwills New Member

    Messages:
    19
    The bendix throws the gear out then it sticks and doesn't retract. I'm wondering if the teeth on the flywheel are damaged and its causing the bendix gear to bind.
     
  6. MARSH

    MARSH Whooooo!

    Messages:
    3,020
    Rides:
    Piaggio Typhoon
    Possible, clean bendix with petrol or carb cleaner then blow out with hp air and don't put oil in it, it needs to be bone dry !
     
  7. Seatonwills

    Seatonwills New Member

    Messages:
    19
    So put a new bendix in, went back to the original half pulley but still same thing. Can hear the starter turn and whine but doesn't turn over. When I take the cover off the bendix gear is still engaged and not retracted.
     

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