BMW 650 GS single valve check (step by step)

Discussion in 'Thumpers' started by henrymartin, Mar 12, 2013.

  1. Don Coyote

    Don Coyote Long timer

    Oct 3, 2008
    Upper Midwest, US
    I've done 3 valve checks and 1 shim replacement, never had a problem working with the throttle body in place. I did ruin the grommet where a hose attaches to the airbox, so have mostly stopped leaving things hang by hoses/wires while doing work (except oil reserve).

    It should be noted that the timing sprockets on some 650GSs have marks that are 1/2 tooth off. On mine and in another video i watched it was the front one being a little high. If you use a TDC bolt for a check it would best be to verify this initial position of the cams...