(4)(3)(2)(1)(4)Insert the hex wrench through the hole in the gear case and rotate the receiver–washer (4) until it is locked with the hex wrench.Loosen the nut (1) (left-hand thread) with the socket wrench and remove the nut–(1), cup (2), and clamp washer (3).Turn the machine upside down, and you can replace the cutter blade or nyloncutting head easily.Mounting of cutterbladeWith the hex wrench still in place.Mount the cutter blade onto the shaft so that the guide of the receiver washer (4)–fits in the arbor hole in the cutter blade. Install the clamp washer (3), cup (2), andsecure the cutter blade with the nut (1).[Tightening torque: 20 - 30 N·m]NOTE: Always wear gloves when handling the cutter blade.NOTE: The cutter blade-fastening nut (with spring washer) is a consumable part.If there appears any wear or deformation on the spring washer, replace thenut. Hex wrenchHex wrenchMounting of nylon cutting headThe clamp washer (3), cup (2), and nut (1) are not necessary for mounting the–nylon cutting head. The nylon cutting head should go on top of the receiverwasher (4).Insert the hex wrench through the hole in the gear case and rotate the receiver–washer (4) until it is locked with the hex wrench.Then screw the nylon cutting head onto the shaft by turning it counterclockwise.–Remove the hex wrench.–MOUNTING OF CUTTER BLADE OR NYLON CUTTING HEAD12RotationMake sure that the blade is the left way up.–Loosen TightenHex wrench