4-58. FLAME HEATER SPARK PLUG (UNCOVERED SYSTEM).
a. Cleaning and Inspection.
Clean spark plug.
R e f e r to TM 9-4910-389-12.
C h e c k that spark plug case (1) is not cracked.
C h e c k that spark plug electrodes (2) are not cracked or bent.
Check that threads (3) are not crossed or burred.
END OF TASK