Service Procedures; Upper Shell Removal; Fuel Filter (30/70,000 Btu/Hr Models) - Master H.S.I. Series Owner's Manual

SERVICE
PROCEDURES

Upper Shell Removal

1. Remove screws 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
(30/70,000 BTU/Hr Models)
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 replace in tank.
6. Attach rubber fuel line to
fuel filter neck.
7. Replace side cover.
10
Never service heater while it is plugged in, operating, or
hot. Severe burns and electrical shock can occur.
Figure 9 - Upper Shell Removal,
30/70,000 BTU/Hr Models
Figure 11 - Upper Shell Removal, 150,000 BTU/Hr Model
Fuel Filter
Side Cover
Figure 12 - Fuel Filter Removal, 30/70,000 BTU/Hr Models
WARNING
Upper
Upper
Shell
Shell
Fan
Guard
Figure 10 - Upper Shell Removal,
90,000 BTU/Hr Model
Upper
Shell
Fuel Line
Fan
Guard
Fan Guard
099605