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Thread: Chewed starter gears symptoms? 250 sx/es

  1. #1
    Join Date
    Mar 2010
    Location
    Pacific NW
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    4,255

    Chewed starter gears symptoms? 250 sx/es

    I just replied to a new member about starter gears,
    chewed metal blocking the stator and intermittent
    valve train paralysis.

    Do those electric starter gears make extra noise before they
    self destruct?

    I'm not the only one who runs these machines altho
    everyone KNOWS that if they don't start in under 2 seconds,
    something is wrong...gas off, switch off, etc.

    We also try to kick start them every chance we get in the delusional
    hopes of saving the electric starter parts.

    Maybe I need something else to worry about...

  2. #2
    Join Date
    Feb 2011
    Location
    fingerlakesny
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    2,834
    wow, i got a pile of them and havent had any issues... knock on wood.... prolly all fall apart 2morrow.... hehe but i believe in running all of them all at least once a month ???
    our original 85 we bought new, 2 - 86 police specials
    250r dust runner
    04 Yamaha kodiaK 450 snowbuster ! Brute Force 750 dust collector .
    Bunch of es stuff I been buying for next builds....
    Gone but lives on in my aching body the mighty 350x collection . A Beat 85 es im gonna rebuild

  3. #3
    Join Date
    Sep 2010
    Location
    NEPA
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    7,051
    Once the dirty oil has caught up to them and the one way bearing starts failing. yes,,they make a horrible clunking noise that noone in their right mind could ignore! yes,,they WILL break off a tooth on the reduction gear and in really bad cases,strip the splines off the armature!
    Please help those who cannot help themselves.

    ALWAYS buying Museum quality machines,3 and 4 wheels. And any and ALL ,NOS parts,EVERY brand.

    I am turning my PM's Off,my Email is billsracing@hotmail.com,put 3WW in the subject. Thanx!

    Gun laws do not stop criminals. BULLETS do.

  4. #4
    Howdy's Avatar
    Howdy is offline Putting Priorities in Order, Busier than ever. Catch me if you can
    Join Date
    Sep 2002
    Location
    Celina, Ohio
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    10,079
    If you kickstart the machine and it slips ( peddle goes down motor don't turn over ), or if you hear a whirling sound when you shut it off, then the one-way clutch is most likely the problem ( 99.9% of the time ). If the one-way clutch is bad it is just a matter of time before the big clunk and starter gear / starter trashing will happen. Seen this many, many times.
    Howdy

  5. #5
    Join Date
    Mar 2010
    Location
    Pacific NW
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    4,255
    Quote Originally Posted by atc007 View Post
    Once the dirty oil has caught up to them and the one way bearing starts failing. yes,,they make a horrible clunking noise that noone in their right mind could ignore! yes,,they WILL break off a tooth on the reduction gear and in really bad cases,strip the splines off the armature!
    Cool, thanks. so it's pretty obvious something is just not right.

    Not like thy're gonna commit suicide while we're sleeping or anything.

    Good to know.

  6. #6
    Join Date
    Mar 2010
    Location
    Pacific NW
    --
    4,255
    Quote Originally Posted by Howdy View Post
    If you kickstart the machine and it slips ( peddle goes down motor don't turn over ), or if you hear a whirling sound when you shut it off, then the one-way clutch is most likely the problem ( 99.9% of the time ). If the one-way clutch is bad it is just a matter of time before the big clunk and starter gear / starter trashing will happen. Seen this many, many times.
    Howdy
    Thanks.
    On the trail 90's, if the kicker feels like it losing friction, aka no engine spin with kick, they say the clutches are glazed.

    So the one way clutch and one way bearing?
    I'll hafta look at a parts diagram.

    Bottom line is their destruction phase is real obvious and hard to miss the fact
    that somethings definitely wrong.

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