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Thread: Valve Clearance

  1. #1

    Valve Clearance

    I have a 2006 kodiak 450 YFM45FAV Does anyone know what the valve clearance spec are supposed to be. I am having trouble with the machine back firng when slowing down , not sure if its valves but they need an adjustment anyway any thoughts?

  2. #2
    Senior Member polar_rod's Avatar
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    Re: Valve Clearance

    Is you exhaust in good shape? when the muffler on my old bigbear rotted out it would backfire on decel.
    08 800EFI sportsman with Tatou 4s tracks+other addon crap
    99 500 sportsman
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    04 bordercollie mix
    69 RT-SE Charger

  3. #3
    Senior Member DareBee's Avatar
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    Aug 2005
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    Tavistock, Ontario
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    438

    Re: Valve Clearance

    Usually means that the pilot circuit is too lean (as in when you have less backpressure in the exhaust when modded or much improved air filter).

    However, to answer your question, I have never seen a bike that doesn't use .004 on intake and .006 on exhaust.
    11 XP 850 Pumpkin
    06 Hawkeye AWD
    07 Outlaw 525

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