1. Husqvarna Motorcycles Made In Sweden - About 1988 and older

Pulling flywheel

Discussion in 'Vintage/Left Kickers' started by Quimo, Nov 17, 2020.

  1. Quimo Husqvarna
    B Class

    Husqvarna Motorcycle:
    1986 XC400
    Other Motorcycles:
    72 Triumph Bonneville 650, 13 YZ450F
    My 86 400 XC seized on me the other day and was surprised to find a perfectly good top end was not the culprit. Assuming I had an issue with the crank or transmission I took the engine out of the frame and began to take a look around the bottom end. As soon as I pulled the flywheel cover I saw that one of the bolts behind the flywheel had worked itself loose (all three had to some extent) to the point that it was catching the flywheel as it rotated, bringing the stroke to a standstill. I tightened the bolt and the the engine now moves freely through its stroke.

    I would like to take the flywheel off to make sure I can tighten the bolts appropriately and was wondering what the best method is other than that handy tool the manual tells you to use. I do not have easy access to compressed air.

    Any help greatly appreciated.
  2. motomwo Husqvarna
    AA Class

    Location:
    Imbler Oregon
    Husqvarna Motorcycle:
    Many vintage big bore and automatics
    Buy the correct puller for the job. They are cheap. Cheaper than damaging your flywheel or crank's threaded end and then having to replace the crank or fly wheel due to damaging it.

    Marty
  3. ruwfo Administrator

    Location:
    NJ
    Husqvarna Motorcycle:
    1980 390CR, 1982 430CR, 1984 400WR
    Other Motorcycles:
    1985 250XC, 2016 FJ-09
    Remember the nut is left hand threaded, so it's NOT righty tighty , left loosie
    Steve-F likes this.
  4. fran...k. Husqvarna
    AA Class

    Location:
    eastern ct
    Husqvarna Motorcycle:
    420ae 98wr125 2004wr250 others
    Other Motorcycles:
    electric freeride 1993 yam gts
    I had the same thing happen on a 360 standard shift. Took the engine out only to find a I guess you call it a cap screw had come out to the point of damaging the rotor.