Protection | | Shearbolt, overrunning clutch and slip clutch | Shearbolt, overrunning clutch and slip clutch | Shearbolt, overrunning clutch and slip clutch | Shearbolt, overrunning clutch and slip clutch | Shearbolt, overrunning clutch and slip clutch | Shearbolt, overrunning clutch and slip clutch | Shearbolt, overrunning clutch and slip clutch | 17 or 33 | Shearbolt, overrunning clutch and slip clutch | Shearbolt, overrunning clutch and slip clutch |