Lesson 4/Learning Event 3
deterioration. Measure the gap between the ignition-plug electrode and the
The gap should be 5/32 of an inch.
ignition plug is unserviceable for other reasons, replace with a new
Gap the plug 5/32 of an inch by bending the electrode on the combustor
plate. Inspect the nozzle holder as a unit. Replace the pressure-atomizing
oil-burner nozzle if it is defective or unserviceable. Installation of the
reverse of removal.
Spark arrester. Remove the two nuts, washers, and screws at each end of the
spark arrester. Lift the spark arrester out of the stack.
reveals the spark arrester is damaged, repair as required. Installation is
the reverse of removal.