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  1. #1
    New Member
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    Jun 2006
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    Ohio
    Tractor
    YM2210

    Default YM2210 engine direction of rotation

    Can someone please tell me the direction of engine rotation, standing in front of the tractor. I'm adjusting valves.

    Thanks

  2. #2
    Veteran Member brain55's Avatar
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    Jan 2008
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    Brentwood, CA

    Default

    It should be clockwise, but the surefire way to tell since you have the valve cover off, is to watch the valves. Intake always follows exhaust. The exhaust valve opens and as it is about to close, the intake opens. If it is happening the other way, you are rotating it the wrong direction.

    Brian

  3. #3
    New Member
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    Jun 2006
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    Ohio
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    YM2210

    Default Re: YM2210 engine direction of rotation

    Thanks. Off to adjust valves.

  4. #4
    Elite Member Car Doc's Avatar
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    Mar 2009
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    Kansas
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    YM3810D Yanmar

    Default Re: YM2210 engine direction of rotation

    It doesn't matter what direction the engine goes you are looking right at the rockers what difference would it make? Just turn it whatever direction makes the next lobe do what you want it too if you are using a socket on the crank.

    fwtw I use a starter button and just bump it over until the next lobe is down adjust it move to the next one turn till the lobe is down and repeat there isn't that many to do so no reason to complicate things. my .002
    Last edited by Car Doc; 05-01-2013 at 11:05 AM. Reason: said cam but meant rockers
    Yanmar YM3810D, LT duty 3pt hoe, 6' KK2 tiller, 6' KK box blade, 6 1/2' KK disc, 5' Howse bush hog, 5' Howse back blade, 9" Yellow PHD, 3 Husky chain saws 346XP NE, 359, 372XP. 07 HD Heritage Softail, Crack injectors, check compression, take 2 beers and call me. "Hey you didn't build that."

  5. #5
    New Member
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    Jun 2006
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    12
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    Ohio
    Tractor
    YM2210

    Default Re: YM2210 engine direction of rotation

    Car Doc
    Your absolutely right. Once I got in there and got to it, I see it's no big deal. My original problem was. It started smoking and lost power. The keeper for the rocker arm was bent, causing the rocker arm to move excessively and bend a push rod. Replaced the entire rocker assembly and push rod. The good rocker assembly was out of adjustment also. Runs great now. And quieter than its ever been. Thanks for the help.

  6. #6
    Elite Member Car Doc's Avatar
    Join Date
    Mar 2009
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    3,246
    Location
    Kansas
    Tractor
    YM3810D Yanmar

    Default Re: YM2210 engine direction of rotation

    Glad to hear you got her back running Van welcome anytime and thanks for the update we like to hear them!
    Yanmar YM3810D, LT duty 3pt hoe, 6' KK2 tiller, 6' KK box blade, 6 1/2' KK disc, 5' Howse bush hog, 5' Howse back blade, 9" Yellow PHD, 3 Husky chain saws 346XP NE, 359, 372XP. 07 HD Heritage Softail, Crack injectors, check compression, take 2 beers and call me. "Hey you didn't build that."

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