Duramaxx 84881 Owner's Manual page 20

MAINTENANCE
REPLACING THE CUTTING BLADE (Fig. 8-9)
NOTE: Only use identical replacement blades.
■ Stop the motor and disconnect the power supply. Allow the blade to come to a complete
stop.
■ Turn the mower on its side.
■ Wedge a block of wood between the blade and mower deck to prevent the blade from
turning.
■ Loosen the blade nut using a 15 mm wrench or socket (not provided).
■ Remove the blade nut, spacer, blade insulator, and blade.
■ Make certain the fan assembly is pushed completely against the motor shaft.
■ Place the new blade on the shaft against the fan assembly. Make sure it is installed with
the curved ends pointing up toward the mower deck and not down toward the ground.
■ Replace the blade insulator and spacer, then thread the blade nut on the shaft and finger
tighten.
NOTE: Make certain all parts are replaced in the exact order in which they were removed.
■ Torque the blade nut down using a torque wrench (not provided) to ensure the bolt is
properly tightened. The recommended torque for the blade nut is 220- 310 in. lbs.
BLADE
BLOCK OF WOOD
FAN ASSEMBLY
SPACER
BLADE INSULATOR
20
WRENCH
Fig. 8
SHAFT
BLADE
BLADE NUT
Fig. 9