1971-1973 Arctic Cat Snowmobiles Factory Service Manual, Page 57Get this manual
ENGINE SERVICING (WANIEL IM914B)Rotor and Rotor Casing Lift out the rotor, observing sealing strips, sealing pins and sealing pin springsProtect the rotor against damageLift off the rotor casing (1), observing the alignment dowels Armature Base Plate and Receiving Plate Remove key and cam (2)Unscrew spark plug connector (4) with well boot (5) and rubber grommet (6)Unscrew and remove armature base plate (1) with cables, rubber grommet (7) and fibre blockSet the armature base plate into the flywheelUnscrew and remove the receiving plate (8), observing the a-ring sealCounterweight and Retaining Flange Remove the counterweight (1) and keyUnscrew and remove the retaining flange (2), observing the rubber G-ring seal