33
Maintenance
Spark Plug
Clean and re-gap every 600 hours of operation, or replace as needed. After removing the spark
plug, clean the terminals with a wire brush. Re-gap the terminals to 0.35cm.
Photocell
The photocell should be cleaned at least once per heating season or more depending on
condition. Use a cotton swab dipped in water or alcohol to clean the lens of the photocell. Note
the proper photocell position as noted in the diagrams.
Screw
Igniter
Wirer
Gap
Burner Head
Spark Plug
Circuit Board
Photocell
Photocell Lens
Photocell
Wire
P70DKH Only
Installing Photocell:
1. Incorrect
2. Correct
Spark Plug
Photocell