Figure 74-32. Removing Spark Plug Frozen to Bushing
SPARK PLUGS
Refer to latest revision of Avco-Lycoming Service Instruction 1042 for a list of approved spark plugs.
REMOVAL OF SPARK PLUGS
—CAUTION—
When withdrawing ignition cable lead connection from plug, be
careful to pull lead straight out and in line with centerline of plug
barrel; otherwise a side load will be applied, which frequently
results in damage to barrel insulator and connector. If lead
cannot be removed easily in this manner, resisting contact
between neoprene collar and barrel insulator will be broken by a
rotary twisting of the collar. A void undue distortion of collar and
possible side loading of barrel insulator.
1. Loosen coupling nut on harness lead and remove terminal insulator from spark plug barrel well.
74 - 22 - 00
Page - 74-25
Reissued: August 1, 1986
2J21
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
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