Duramaxx 85729 Owner's Manual page 24

MAINTENANCE
REPLACING THE CUTTING BLADE (Fig. 12-13)
Since the mower is equipped with a sealed battery, the mower can be tipped for maintenance
without the danger of acid spillage.
NOTE: Only use identical replacement blades.
■ Stop the motor and remove the switch key. Allow 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
24
WRENCH
Fig. 12
SHAFT
BLADE
BLADE NUT
Fig. 13