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5-4
QUARTERLY CHECKS AND SERVICE
Clean Combustion Air Blower Assembly
1. Disconnect the blower wiring harness and remove the four blower mounting nuts.
2. Remove the three fasteners that secure the blower motor assembly to the blower housing, and
separate the two components.
Remove these fasteners.
3. Wrap the motor with plastic wrap to prevent water from entering it. Spray degreaser or
detergent on the blower wheel and the blower housing. Allow it to soak for five minutes. Rinse
the wheel and housing with hot tap water, then dry with a clean cloth.
Blower Housing
Blower Wheel
Wrap the motor and wires
with plastic wrap or a
plastic bag.
Wiring connection
Blower
assembly
mounting nuts