when i went to remove the bolt, i put the bike in 5th gear and held the rear brake like some have suggested. tried to remove bolt, used considerable effort and all i did was turn the engine over, rear wheel not moving.. would that mean my clutch pack is weak? even though i did use considerable force and a long ratchet? anyways, i just put a 19mm socket and ratchet on other end of crank and rotor bolt came right off.
the in gear/hold brake method is BS.
an impact is the only way to go.
your clutch is probably fine.
also if holding the 19mm on the ign. trigger be aware that you can twist the ears off of it.
it is not made to hold much if any pressure.
the 19mm hex engages into 2 very small ears on the timing advancer.
***CAUTION***