Technical data

13773-001
74-20
Page 2 30 Nov 2000
B. Spark Plugs (See Figure 74-202)
(1) Removal - Spark Plugs
(a) Remove engine cowling. (Refer to 71-10)
CAUTION: To prevent damage to the spark plug insulator and connector, when with-
drawing insulator from spark plug, pull the harness lead straight out and at
same angle as the barrel.
(b) Remove ferrule assembly nut on harness lead and remove insulator from spark plug.
(c) Remove spark plug from engine and place in identification tray.
(d) Cover spark plug hole to prevent foreign materials from passing into engine.
(e) Remove remaining spark plugs in accordance with (b) through (d).
(2) Installation - Spark Plugs
(a) Acquire necessary tools, equipment, and supplies.
(b) Clean spark plugs as required.
(c) Set spark plug electrode gap to 0.015 to 0.019 inches.
(d) Lubricate spark plugs.
(e) Place gasket on spark plug and install spark plug. Torque plug 300 to 360 inch-pounds (33
to 39.6 Nm).
(f) Install remaining spark plugs in accordance with (b) through (c).
(g) Install ignition harness leads. (Refer to 74-10)
(h) Install engine cowling. (Refer to 71-10)
Description P/N or Spec. Supplier Purpose
Spark Plug Lubricant 2612 Champion Lubricant