TM 5-4210-276-14
Table 4-2. Troubleshooting (cont)
Malfunction
Test or Inspection
Corrective Action
b. Cleaning and Inspection.
(1) Clean spark plug in a compressed air spark plug cleaner. Remove abrasive material with
clean, dry compressed air.
(2) Inspect for excessive burning, pita, cracks or broken ceramic insallation. Inspect threads
for burrs or evidence of having been stripped or cross-threaded.
(3) Teat the firing power of the spark plug on a suitable spark plug tester.
(4) Measure the electrode gap; 0.028 (0.071 cm) to 0.033 inch (0.083 cm), using a leaf or wire
gage. Bend the outside electrode until the desired gap is attained.
(5) Replace plug if necessary.
d. Installation
(1) Install spark plug (fig. 4-7).
(2) When installing the spark lplug, make certain the gasket is serviceable and properly in-
stalled. Torque spark plugs to 275 to 300 inch-pounds.
(3) Tighten cable connector nut on spark plug.
Step 5. Inspect breaker points for pitting and adjustment.
Clean and adjust or replace breaker points.
a. Removal.
(1) Unsnap spring clips and remove the accessory case cover.
(2) Refer to figure 4-9 and remove the contact assembly.
4-13
