Don't open up or take off side cover just to check to see if your piston at TDC, just take out the inspection plug, I sent you the manual and posted pics. if you take that side cover off youll need a new gasket and your hours down with labor, if your after that 19mm socket nut, that on the side of the stator cover, there is a big allen that goes into in, its about a 3 " circle diameter, take that off you will see the nut, my flywheel had a sprag clutch on it, so only turn one way.