2008 Yamaha Raptor 250SE / 250SE2 Factory Service Manual, Page 177Get this manual
PICKUP COIL ROTOR AND STARTER CLUTCH
REMOVING THE PICKUPCOIL ROTOR 1Remove: Pickup coil rotor bolt Washer NOTE: Loosen the pickup coil rotor bolt while holding the rotor with sheave holder Do not allow the sheave holder to touch the projection on the rotor Sheave holder 90890-01701 Primary clutch holder YS-01880-A