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DR Pro 475 - Emergency Procedures; Freeing a Jammed Flywheel

DR Pro 475
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22 DR
®
SELF-FEEDING WOOD CHIPPER
Figure 36
Negative
Battery
Cable
Battery
Never pry against the Scroll Weldment when removing the Deflector or Discharge Chute or at any other time. This will cause
Damage to the machine.
To Free a Jammed Flywheel
Tools Needed:
Two 1/2" Wrenches
5/16 Wrench
Phillips Head screwdriver
Disassemble:
1. Remove any material left in the Chipper Hopper.
2. Disconnect the negative terminal at the Battery (Figure 36).
3. Remove the two Bolts and Locknuts that secure the Discharge Chute to the
Chipper Housing and then remove the Discharge Chute (Figure 37).
4. Check to see if the Discharge Chute or Discharge opening is clogged. If it
is, clear it with a wooden stick.
5. With a wooden stick, loosen and remove any material left in the Chipper
Housing and make sure the Flywheel turns freely with the stick.
Reassemble:
1. Position the Discharge Chute onto the Chipper Housing and secure with
two Bolts and Locknuts.
2. Reconnect the battery negative terminal cable, the spark plug wire and start
the Chipper engine; allowing the remaining material in the Chipper Housing
to discharge.
3. If the Chipper Housing doesn’t clear and the flywheel is still jammed, repeat
above process.
Note: Be certain the Chipper Housing is clear before trying to process more material
into the Chipper Hopper.
Discharge
Chute
Bolts and
Locknuts
Hopper
Figure 37
Chipper
Housing
Shut down the Engine (The flywheel will continue to rotate for a while after the engine is shut off), Wait 5 minutes for the engine
to cool and all moving parts to come to a complete stop, remove spark plug wire and disconnect the negative battery cable before
moving or working on the chipper.

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