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105843
PORTABLE FORCED AIR HEATERS
D20N, D30N AND D44N MODELS
Figure 9 - Fuel Filter Removal, D20N Model
UPPER SHELL REMOVAL
1. Remove screws and lock washers along
each side of heater using 5/16" nut-
driver. These screws attach upper and
lower shells together.
2. Lift upper shell off.
3. Remove fan guard.
FUEL FILTER
(D20N Model)
1. Remove side cover screws using 5/16"
nut-driver.
2. Remove side cover.
3. Pull rubber fuel line off fuel filter neck.
4. Carefully pry bushing and fuel filter out
of fuel tank.
5. Wash fuel filter with clean fuel and re-
place in tank.
6. Attach rubber fuel line to fuel filter
neck.
7. Replace side cover.
FUEL FILTER
(D30N and D44N Models)
1. Remove side cover screws using 5/16"
nut-driver.
2. Remove side cover.
3. Pull upper fuel line off fuel filter neck.
4. Carefully pry bushing, lower fuel line,
and fuel filter out of fuel tank.
5. Wash fuel filter with clean fuel and re-
place in tank.
6. Attach upper fuel line to fuel filter neck.
7. Replace side cover.
SERVICE
PROCEDURES
WARNING: Never service
heater while it is plugged in, op-
erating, or hot. Severe burns and
electrical shock can occur.
Upper Shell
Fan
Guard
Figure 7 - Upper Shell Removal, D20N
Model
Figure 8 - Upper Shell Removal, D30N
and D44N Models
Fuel Filter
Side Cover
Fuel Line
Fan
Guard
Upper
Shell
Fuel Filter, Bushing,
and Lower Fuel Line
Upper Fuel
Line
Side Cover
Figure 10 - Fuel Filter Removal, D30N and D44N Models