P r e v e n t i ve
M a i n t e n a n ce
C h e c k s a n d S e r v i c e s f o r M 4 8 A 5 A V L B H u l l -
Spark Plugs (Left
C o n t i n u ed
To check and service manifold heat-
er spark plug, disconnect electrical
lead from manifold heater spark
plug. Unscrew spark plug and re-
move plug and gasket from heater.
Wipe off grease and dirt from elec-
trode and insulator.
Check electrodes for pitting and car-
Clean spark plug and check insula-
tor for cracks.
Set spark plug gap to 0.094 to 0.114
inch (0.24 to 0.29 cm).
Install spark plug and gasket in
Connect electrical lead to spark plug.
Not Fully Mission