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Dayton Operating Instructions and Parts Manual
7
®
Models 3E358B and 3E359B
Figure 8 - Upper Shell Removal,
Model 3E359B
Upper Shell
Maintenance
Never service
heater while it is
plugged in, operating, or hot. Severe
burns and electrical shock can occur.
UPPER SHELL REMOVAL
1. Remove screws along each side and
top of heater using 5/16" nut-driver.
These screws attach upper and lower
shells together (See Figure 8).
2. Lift upper shell off.
FAN BLADES AND AIR DEFLECTORS
1. Remove upper shell (See Figure 8).
2. Clean fan blades and air deflectors
with clean, soft cloth moistened with
Kerosene or solvent (See Figure 9).
3. Dry fan blades and air deflectors
thoroughly.
4. Replace upper shell.
Figure 9 - Fan Blades and Air Deflectors
Air Deflector
Fan Blade
SPARK PLUG
1. Remove upper shell (See Figure 8).
2. Remove spark plug wire from spark
plug (See Figure 10).
3. Remove spark plug from burner
head using 13/16" open-end wrench
(See Figure 10).
4. Replace spark plug if damaged or
heavily coated with carbon.
5. Clean and regap spark plug elec-
trodes to .075 inch (See Figure 11).
6. Install spark plug in burner head.
7. Attach spark plug wire to spark
plug.
8. Replace upper shell.
.075
inch
Figure 11 - Spark Plug Gap
Figure 10 - Spark Plug Removal
Spark Plug
Spark Plug
Wire
Burner Head
Figure 12 - Removing Tank Fuel Filter
Fuel
Filter
Fuel Pump
(Filter Under
Cover)
Fuel Lines
FUEL FILTERS
TANK FUEL FILTER
1. Disconnect fuel lines from pump and
fuel filter canister, if equipped, with
7/16" wrench (See Figure 12).
2. Carefully pry fuel filter loose from
fuel tank with flat end of screw-
driver.
3. Inspect fuel filter for water or dirt.
4. Rinse fuel filter and fuel lines with
clean Kerosene.
5. Replace fuel filter into fuel tank.
6. Connect fuel lines to pump and fuel
filter canister, if equipped.