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Thread: 1978 atc90 timing help

  1. #1
    Join Date
    Mar 2022
    Location
    New york
    --
    38

    1978 atc90 timing help

    How's it going guys, just picked up a 78 Atc 90 and I am trying to get it to start. Cam timing is set properly as well as valves set to spec, problem is the generator/flywheel t mark does not line up to the stator. I can't post a picture right now it is too big to post, the timing line is pointing down towards the shifter and it's supposed to be in line with the cam. When I try and put the timing mark in the correct spot the piston is near the bottom of the stroke. Has anyone ran into this problem or would anyone be able to point me into a direction of help?

  2. #2
    Join Date
    Jul 2009
    Location
    South Florida
    --
    6,722
    See if it doesn’t have a sheered flywheel key . You’ll have to purchase a flywheel puller to remove the flywheel .
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

    My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10

  3. #3
    Join Date
    Mar 2022
    Location
    New york
    --
    38
    Sorry for the delay in response, I figured I would have to do that and ordered a puller, of course it was the wrong one. I will update when I get one and check.

  4. #4
    Join Date
    Mar 2022
    Location
    New york
    --
    38
    It was the flywheel key was sheered in half, thank you for the response it is up and running really well.

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