Troy-Bilt 24A-070F766 Operator's Manual page 13

• Remove self-tapping screw on right side of unit that
attaches to the fail screen. See Figure 16.
RemoveSelf-TappingScrew Remove For Blade
Removal
Figure 16
• Remove hex screw on top of rear housing near
mounting bracket and the flange lock nut that
secures flail screen. See Figure 14.
• Remove and clean the screen by scraping or
washing with water. Reinstall the flail screen.
Sharpening Or Replacing Chipper Blade
NOTE: When tipping the unit, empty the oil and fuel
tank and keep engine spark plug side up.
• Disconnect and ground the spark plug wire to
retaining post.
• Remove hose assembly and bag assembly.
• Remove the three bolts holding the hose hanger
bracket and chipper chute to the upper housing.
See Figure 16.
• Remove the flange lock nuts, front wheels, and
wave washers that attach to the pivot arm
assemblies. See Figure 17.
Front Support
Brace & Lock Nut
Spring Lever
Height Adj. Bearing
Pivot Arm Assembly
Thrust Washer
Shoulder
Screw
Figure 17
•
•
Housing
Screws
•
Bell Washer
•
Wave Washer
Flange Lock Nut
13
Remove the shoulder screws, thrust washers, and
bell washers that go through the pivot arms to the
front support brace. The front support brace and
lock nut can be removed at this time as well.
Remove the four screws on the upper housing that
secure the nozzle cover. See Figure 18.
Nozzle
Screws
Figure 18
Carefully tilt and support the unit up to provide
access underneath to the nozzle mounting
hardware and impeller. Remove the three shoulder
bolts securing the black plastic nozzle to the lower
housing. Refer to Figure 19.
Black Plastic Nozzle
Shoulder Bolts
Figure 19
Tilt top of black plastic nozzle toward the engine to
remove.
Lower Housing
Screws