Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 414

[8-15 Main-HBC Maintenance Instructions ]
Operation procedures
6) Use the fixing piece to extend into the center of the motor (part 32)
wind shield to clamp the slot at the end of the motor shaft, while using
the Inner hexagonal sleeve S13 to unscrew the nylon lock nut (part
20).
<<Note>>
Rotate the nylon lock nut counterclockwise when seen from the nylon lock
nut side.
7) Remove the nylon lock nut (part 20), flat washer (part 31), shaft-end
sleeve (part 19), and impeller (part 4).
BS_08_L
Illustrations
Nylon lock nut
Flat washer
Shaft-end sleeve
Impeller
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