Get a flywheel puller, feeler gauges, piston stop, torque wrench.
Open the flywheel (Novi nut is lefthand thread)
Use the puller to loosen the cam
Index the points (set cam to points widest open) to 0,35-0,40mm using the points hold down screw.
Set the piston to 1,5mm before top dead center.
Rotate the cam clockwise until the points just start to open
Give the cam a small whack with a screwdriver handle to lock it into position on the crankshaft
Reinstall the flywheel making sure the dimples line up with the divots on the cam
Tight the Novi nut to 36 lbft.