Spark Plug

Dayton Operating Instructions and Parts Manual

Dayton® Portable

Oil-Fired Heaters

Maintenance (Continued)

5.Wash fuel ﬁlter with clean fuel and replace in tank.

6.Attach upper fuel line to fuel ﬁlter neck.

7.Replace side cover.

Fuel Filter

(Models 2E510D and 2E511D)

1.Remove upper shell (see page 6).

2.Remove fan (see page 6).

3.Remove fuel and air line hoses from nozzle assembly.

4.Remove spark plug wire from spark plug.

Burner Strap

45°

	Side	Upper Fuel Line
	Cover	Upper Fuel Line
	Cover

Figure 17 - Fuel Filter Removal, Models 2E510D and 2E511D

Fuel Filter, Bushing, and

Lower Fuel Line

Upper

Fuel

Line

Side

Cover

Figure 18 - Fuel Filter Removal, Models 3E218D and 3E219C

5.Remove two screws using 5/16" nut- driver and remove burner strap.

6.Place hex-body of spark plug into vise and tighten.

7.Remove spark plug mounting nut using 11/16" open-end wrench.

8.Remove burner strap from spark plug.

	Combustion	Spark Plug
	Chamber
		Mounting Nut

Burner Strap

Spark Plug

Wire

Nozzle	Spark Plug
Assembly

	Air Line	Fuel Line
	Hose
		Hose

Figure 19 - Spark Plug Removal, Models 2E510D and 2E511D

Bend Here to

Adjust Gap

Gap

Figure 20 - Spark Plug Gap, Models 2E510D and 2E511D

Figure 21 - Spark Plug Rotation, Models 2E510D and 2E511D

9.Clean and regap spark plug elec- trodes to .055" 2E510D and .075" 2E511D gap.

10.Replace burner strap onto spark plug. Rotate burner strap to position spark plug electrodes (see Figure 21).

11.Tighten spark plug with spark plug mounting nut.

12.Release hex-body of spark plug from vise.

13.Replace burner strap onto combus- tion chamber.

14.Attach spark plug wire to spark plug.

15.Attach fuel and air line hoses to nozzle assembly.

16.Replace fan (see page 6).

17.Replace fan guard and upper shell.

SPARK PLUG

(Models 3E218D and 3E219C)

1.Remove upper shell (see page 6).

2.Remove fan (see page 6).

3.Remove spark plug wire from spark plug.

4.Remove spark plug from burner head using 13/16" open-end wrench.

101421