Help me identify this motor

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Thread: Help me identify this motor

  1. #1
    finmad is offline Registered Rider finmad is on a distinguished road
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    Help me identify this motor

    I bought a 1994 Max IV and this is the motor in it. I cannot find an engine plate. anyone know what this might be?

    [IMG]94 max iv motor by Dane Trask, on Flickr[/IMG]

  2. #2
    racerone3's Avatar
    racerone3 is offline Driver X racerone3 is on a distinguished road
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    kohler magnum. probably either 18 or 20 hp
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  3. #3
    finmad is offline Registered Rider finmad is on a distinguished road
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    perfect, I found whats left of a painted over decal and can make out 20hp, so it looks like the 20hp. Do you know if these came on Max IVs from the factory? Just wondering if it is a retro fit or original.
    Last edited by finmad; 12-08-2017 at 11:38 AM.

  4. #4
    JoeMeg's Avatar
    JoeMeg is offline Master Mudder JoeMeg is on a distinguished road
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    Hello finmad,
    Sorry to chime in so late. I'll say it's the M20 by looking at the cooling tins over the heads. The M18's are flush with the ends of the blower cover while the 20's protrude sightly (as do the ones in your pic) due to longer stroke. The 18 and the 20 have the same bore, the 20 just has longer throws on the crank and taller jugs. I'm pretty sure IV's were available with the Kohler Magnum engine. I believe somewhere on this site you can key in your s/n and get quite a bit of info on your specific machine.

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