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    Question on gears 09 600 shift 136

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    • Member since
      October 2005
    Question on gears 09 600 shift 136
    Posted by r.a. on Sunday, December 20, 2009 4:38 PM

    Comes with 22/39 Ride midwest Pulls 8100 rpm Has hacksaw track only have 180miles on it but

    I cant get over 90 Any opinions on a 23 top gear It is the 600 2 injected engine. My 600 fusion 23/39

    runs mid to upper 90s all the time. Cold days it will pull a little over 100 also hacksaw track.

    • Member since
      July 2005
    • From: Montoursville, Pa
    Posted by Pro-X Barry on Monday, December 21, 2009 1:04 PM

    I don't believe the gear is your problem,  I run that gear in a 600 and can pull 100mph no problem.

    Check the track tension (too tight),  Primary clutch not shifting out 100% (black marker the last 1/2" and check wear pattern),  belt has too much free play or possibly too much belt to shive clearance.  Jetted too fat,  not enough timing,  air box restriction,  tps not set correctly,  I can keep going.

    • Member since
      October 2005
    Posted by r.a. on Monday, December 21, 2009 10:01 PM

    Its injected So its not the jets.My next ride I will make sure the track is as loose as possible.I have only been on it twice 180 miles. Have been running xtra oil in the gas. Im going to put a 23 on it. That will also make the chain have less of a dog leg. What is the peak rpm for max hp for the 600 2 injector engine?I will mark the primary also.So far I really like the sled and its real quick to 80,but my 600 fusion is real quick to 90.Im also new to the ethanol non ethanol plug. I do not run ethanol but I figure with brake in it cant hurt keeping the ethanol plug in.Thanks for good info

    • Member since
      November 2006
    • From: IL
    Posted by MorSno on Tuesday, December 22, 2009 7:22 AM
    Is the 600 Fusion and the 600 Shift running the same track lug length? Additionally, a 120 might be a little faster top end than a 136.
    • Member since
      July 2005
    • From: Montoursville, Pa
    Posted by Pro-X Barry on Wednesday, December 23, 2009 9:52 AM

    Yes, I know it is injected.  Do you think it is not fat on top end,  we'll it is.  Check and see if Boondocker has a controller for it and then get it on the dyno to map a fuel curve(s) for temp and elevation.

    Be careful not to run the track too loose as it will create a whip effec from the rear bogie to the tunnel wheel.  We usually adjust for 1-1/2" droop in the middle.   Also go through the belt adjustment/clearances,  lots of mph diff in good vs bad.

    Check the cranking compression while at it if only 120/125 get the head cut,  you need 135.   Last thing is the timing if you know how to check it,  28 degrees works best but you need good fuel for wot runs.

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