North Star M157594I - Manual (Page 48)

Maintenance & Repair
48
Inspect electrodes Inspect electrodes yearly and make adjustments as needed.
1) Remove the 4 nuts that attach the burner to the heating chamber. You
do not have to disconnect the fuel lines or the electric cords.
Figure 20
2) Pull the burner out from underneath the heat exchanger.
3) Clean off carbon deposits, which may have accumulated on the tips of
the electrodes.
4) Reset the spacing as shown below in Figure 21.
1/16"
1/8"
7/16"
Electrodes
Figure 21
Heating chamber
Nuts
Burner