Troy-Bilt 47330 - Manual (Page 21)

Section 5: Maintenance 21
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Before inspecting, cieaning or servicing the machine, shut off engine, wait for aii moving parts to
come to a compiete stop, disconnect spark piug wire and move wire away from spark piug.
Faiiure to foiiow these instructions can resuit in serious personai injury or property damage.
Chipper Blade Installation
1. Clean the blade seat and adjacent area on
the flywheel.
2. Position the chipper blade in the blade
seat with the countersunk holes In the blade
facing outward (toward you).
3. Secure the chipper blade using two new
1/4“-20 lock nuts and two new socket head
screws. Do not reuse the old hardware.
Tighten the screws and nuts very securely.
(After two operating hours, recheck the
hardware for tightness).
4. Remove the wedge holding the flywheel
in place. Reinstall the discharge screen and
chipper chute securely, and then reconnect
the spark plug wire.
HOPPER FLAP REPLACEMENT
If any of the “fingers” on the hopper flap (A,
Figure 5-8) in the shredder hopper are torn
or missing, or if the fingers don’t prevent
“blow back” of the material being shredded,
inspect the flap for damage or deterioration.
Do not use the unit if the flap is damaged.
To Replace Hopper Flap
A DANGER
Shredded particles can kick back up
through the shredder hopper inlet. The
retainer flap is designed to reduce the
kickback of particles and must be in place
and securely fastened.
Before using unit, be sure retainer flap is
securely fastened. Also make sure you
are wearing protective safety goggles or
glasses.
1. Stop the engine and wait for all parts to
come to a complete stop. Disconnect spark
plug wire and secure it away from spark
plug.
2. Using a 3/8" wrench, remove the three
1/4"-20 X 3/4" flange head screws and flange
nuts (B, Figure 5-8) that secure the flap.
Remove the flap.
3. Position the new hopper flap in place and
securely reinstall the attaching screws and
nuts (screw heads on top).