2.13 Others
2.13.1 Replacing the main motor
1. Turn off the main switch and remove the rear left
cover (2 screws).
2. Remove the power transformer (2 screws).
3. Disconnect the two main motor connectors.
4. Mark off the tension pulley bracket position.
5. Remove two screws to loosen the tension pulley
bracket.
6. Remove the main motor bracket (8 screws) and
drive pulley (2 Allen screws and one parallel key).
CAUTION
Do not lose the parallel key.
7. Remove the main motor from the bracket and
replace it.
8. Reassemble in the reverse order.
2.13.2 Replacing the vacuum fan
1. Turn off the main switch and remove the rear left
cover (2 screws).
2. Disconnect the vacuum fan connector.
3. Remove the vacuum fan unit (3 screws).
4. Disassemble the vacuum fan unit and replace the
fan.
5. Reassemble in the reverse order.
2.13.3 Adjusting the main motor and main drive belt tension and alignment
Belt tension standards
• Main motor belt
8 mm deflection at 1.2 ± 0.25 kg pressure.
Main motor
Main motor bracket
Tension pulley
bracket
Power
transformer
Connector
Drive pulley
Vacuum fan
Fan casing
Main motor
pulley
8 mm
1.2 ± 0.25 kg
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