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Thread: 1985 YTM200ERN valve and clutch adjustment

  1. #1
    mark38090's Avatar
    mark38090 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Apr 2006
    Location
    Hawthorne, Florida
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    354

    1985 YTM200ERN valve and clutch adjustment

    Can someone tell me how to adjust my clutch and valves? The clutch doesn't slip much just a little bit in third gear if i'm not rollin good. As far as the valves, they rattle some and seem to get worse after riding for a few hours.
    1984 Honda TRX200
    1985 Yamaha 200ERN ( two of these now)
    1985 Honda 250SX
    1991 Suzuki LT230
    2003 Honda Rancher 350ES

  2. #2
    Join Date
    Nov 2002
    Location
    Kirkville, NY
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    3,831
    Valve Adjustment
    Take the valve covers off and line the "T" mark up with the notch. If both valve rocker arms have a little play in them then check there cleacence, if they don't both have play then spin the rotor over once (1 rotor rotation) = 1/2 a cam rotation) and line up the "T", now they should both have play. The clearence is intake = .05-.09 mm (.002-.004 in), exhaust = .11-.15 mm (.0043-.006 in). Now pull the engine over a few times and check again.
    1984 Yamaha YT 60 Tri Zinger(current project)
    1983 Yamaha YTM 200 (rear suspension kit)..... long term project
    2004 BMW R1150R
    1972 Honda CT 70
    2007 Lifan 110

  3. #3
    Join Date
    Nov 2002
    Location
    Kirkville, NY
    --
    3,831
    Clutch Adjustment
    On the right side engine (clutch) cover there is a nut, loosen it. Then turn the screw that is on the inside of the nut Counterclockwise until slight resistance is felt. Now turn the screw clockwise 1/8 turn. Then while holding the screw in place tighten the nut.
    1984 Yamaha YT 60 Tri Zinger(current project)
    1983 Yamaha YTM 200 (rear suspension kit)..... long term project
    2004 BMW R1150R
    1972 Honda CT 70
    2007 Lifan 110

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