Removing And Sharpening The Blade; Changing Or Tightening The Belt - BBT 9000 Series Owner's Manual

Electric start garden mulcher/chipper
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Removing and Sharpening the Blade

Disconnect the spark plug wire and ground against the engine.
Remove chute and rotate the blade to align with the access hatch.
Remove the blade using an Allen key on the outside of the blade and an adjustable wrench on the impeller
assembly (through the discharge chute). Use a piece of pipe or wood to block the hammer blades, preventing
them from inadvertently turning.
Replace or sharpen the blade as desired.
When sharpening the blade, protect hands by using gloves.
NOTE: Make certain the blade is reassembled with the sharp edge facing upward.

Changing or Tightening the Belt

NOTE: The belt is designed to be the weakest link in the mechanical linkage between the engine and the
blade. This improves the safety and durability of the chipper/shredder.
Occasionally, changing or tightening the belt is required.
To change the belt:
Stop the engine and make certain the blades have come to a complete stop. Disconnect the spark plug wire
from spark plug and ground against the engine.
Remove the belt guard.
Loosen engine mount bolts and release belt tension.
Pry the belt off the pulley using a screw driver shaft as a wedge as you rotate the pulley.
Place a new belt on the pulleys in a similar fashion.
To tighten the tension on the pulleys, follow the above steps plus:
Scribe a mark on the base plate along the edge of the engine.
Remove the belt from the pulleys.
Remove the upper discharge chute and mulcher screen.
Loosen the four bolts securing the engine.
Slide the engine about 1/8" further back.
Tighten the engine mounting bolts securely.
Re-install the belt and verify the tension. If the belt is still too loose, move the engine back another 3mm by
repeating the above steps.
Reinstall guards and chute.
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