Maintenance And Repair Instructions - Troy-Bilt P/N 769-01473 Operator's Manual

MAINTENANCE AND REPAIR INSTRUCTIONS

REPLACING THE CUTTING BLADE
When the cutting blade gets dull, you need to replace it.
Never sharpen a dull blade. Follow the instructions in this
section to successfully replace the blade.
WARNING:
always wear gloves while handling or
installing the blade.
Remove the Cutting Blade
NOTE: To make cutting blade removal and installation
easier, place the unit on the ground or on a work
bench.
1. Align the shaft bushing hole with the locking rod slot
and insert the locking rod into the bushing hole (Fig. 14).
WARNING:
can result in injury to the operator. The
housing remains hot for a short time even
after the unit is turned off. Do not touch the
gear housing until it has cooled.
Shaft Bushing Hole
Locking Rod Slot
Locking Rod
2. Hold the locking rod in place by grasping it next to
the boom of the unit (Fig. 15).
3. While holding the locking rod, loosen the nut on the
blade by turning it clockwise with a 5/8 inch closed-
end or socket wrench (Fig. 15).
Clockwise
To avoid serious
personal injury,
The gear housing
gets hot with use. It
Output Shaft
Output Shaft
Bushing
Fig. 14
Fig. 15
4. Remove the nut, blade retainer and blade. Store the
nut and blade together for future use in a secure
place. Store out of children's reach.
Install the New Cutting Blade
WARNING:
always wear gloves while handling or
installing the blade.
1. Place the cutting blade on the output shaft bushing
(Fig. 16).
Blade Retainer
Pilot Hole
Output Shaft
Bushing
Locking Rod
2. Make sure that the cutting blade is centered on the
pilot step and sitting flat against the output shaft
bushing (Fig. 17).
WARNING:
unit will vibrate and the blade may fly off,
causing possible serious personal injury.
Pilot Step
To avoid serious
personal injury,
Nut
Cutting
Blade
Shield
Mount
Fig. 16
If the cutting blade
is off-center, the
Fig. 17
13