Cleaning Blower Motor (Only Laser 560/730); Cleaning The Exhaust Fan - Toyotomi Laser 300 Service Manual

L A S E R L A S E R
Section 3
3-11

Cleaning Blower Motor (Only Laser 560/730)

Usage of poor-quality kerosene (High sulfer, high
viscosity, etc.) or fuel other than No. 1-K kerosene, will
cause heavy carbon to build up on the exhaust fan or
the blower motor assembly. This may cause the exhaust
fan to stick or the blower motor to malfunction.
These will result in noise in the blower motor assembly.
The blower motor assembly must be disassembled
according to the following procedure. Clean the fan or
replace the blower motor (and other parts), if necessary.
STEP 1: Cleaning the Exhaust Fan
A. Remove the blower motor case from the heater base.
Remove the top cover.
B. Loosen the set screw that secures the exhaust fan to
the motor shaft. Remove the retaining nut.
NOTE:
2.0 mm (5/64 in.) hex key and 7 mm (9/32 in.)
socket are required.
C. Remove the exhaust fan. Clean the fan and the
housing.
D. Re-assemble the exhaust fan and test for proper
operation before re-installation.
STEP 2: Replacing the Blower Motor or Intake Fan
A. Remove the spacer from the shaft.
B. Remove five (5) screws from the blower motor
bracket.
C. Remove the motor wire bushing and then the blower
motor from the housing.
D. Loosen the set screw and remove intake fan.
E. Remove the two (2) screws fixed on the blower motor
bracket of blower motor.
H E A T I N G H E A T I N G S Y S T E M S S Y S T E M S
Servicing
S E R V I C E M A N U A L
15