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Thread: 200x timing

  1. #1
    Join Date
    Jun 2012
    Location
    Lakeland FL
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    17

    200x timing

    Hey y'all,

    I am new to the page but have come here for some advice on setting the timing on a 84 200x. I am about to have the top end rebuilt and I am debating on weather or not I want to assemble it my self or let an expert do it and pay for for something that I could probably do my self. So any tips, tricks, advice, or any kind of help would be much appreciated! I do have an owners manual but it seems it seems to leave out some pointers that maybe could be a big help. Thanks!

  2. #2
    Join Date
    Mar 2010
    Location
    Slidell, LA
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    4,738
    Do a search for 200x timing. There are a lot of posts already written on the subject.
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  3. #3
    Join Date
    Jun 2012
    Location
    Lakeland FL
    --
    17
    Will do thanks!

  4. #4
    Join Date
    Jan 2010
    Location
    Worcester, MA
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    1,117
    It's easier than it may seem, at least with a small amount of mechanical experience and know-how. The manual makes it real simple.

    Basically, TDC is top dead center; this is when the piston is at the top of it's travel, at its highest point. There are two TDCs in a four stroke cycle. Timing is set at the compression stroke, when both the lobes on the cam are pointed down, making both valves closed. It's the second TDC.

    You need to turn the flywheel/engine over until TDC. There should be a mark with a T on the flywheel, you need to remove the little cover to see it. Sometimes they are rusty and hard to find, but if you look through the spark plug hole, you can use a straw and/or flashlight to see when the piston is at the top. If it's at the top and there's no 'T' visible on the flywheel visible, you are likely at the wrong TDC.

    The manual makes it really easy because it has pictures, instructions, exploded views, etc. Should be available online as well.

    There is also the ignition timing on the camshaft, but that's fairly simple as well.

  5. #5
    Join Date
    Sep 2010
    Location
    Maine
    --
    463
    Is this pretty much the same for a 1983 ytm 200k??
    Quote Originally Posted by TheRealFatShady View Post
    It's easier than it may seem, at least with a small amount of mechanical experience and know-how. The manual makes it real simple.

    Basically, TDC is top dead center; this is when the piston is at the top of it's travel, at its highest point. There are two TDCs in a four stroke cycle. Timing is set at the compression stroke, when both the lobes on the cam are pointed down, making both valves closed. It's the second TDC.

    You need to turn the flywheel/engine over until TDC. There should be a mark with a T on the flywheel, you need to remove the little cover to see it. Sometimes they are rusty and hard to find, but if you look through the spark plug hole, you can use a straw and/or flashlight to see when the piston is at the top. If it's at the top and there's no 'T' visible on the flywheel visible, you are likely at the wrong TDC.

    The manual makes it really easy because it has pictures, instructions, exploded views, etc. Should be available online as well.

    There is also the ignition timing on the camshaft, but that's fairly simple as well.

  6. #6
    Join Date
    Dec 2008
    Location
    Monroe MI
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    5,787

  7. #7
    Qdude79 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Jun 2003
    Location
    CenCal
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    369
    I did my '85 after a full rebuild, every nut and bolt, as a complete first time novice, using the manual. Got it right the first time. I'd follow the manual.
    "Still occupied with 1985"

    200X- restored to near original and SOLD
    350X- back in black
    250R- she purdy...

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