TM 5-4210-276-14
Table 4.2. Troubleshooting (cont)
Malfunction
Test or Inspection
Corrective Action
b. Service Model 1A08-3.
(1) Service the air cleaner element when red signal reached service level (fig. 4-11).
(2) Loosen retaining bolts.
(3) Wipe out inside of air cleaner cover and body.
(4) Remove element from air cleaner body and blow out with compressed air from clean aide
to dirty side of element.
(5) Reinstall element, cover, and bolts.
Clean exhaust points.
Step 4. Check for lack of spark at breaker points.
Adjust 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.
b. Cleaning and Inspection.
(1) Clean the contact assembly with filtered, compressed air.
(2) Inspect contacts for pitted, burned, misaligned or worn surfaces.
(3) lnspect cam follower for cracks, breaks or wear.
(4) Repair or replace any damaged or defective part.
c. Installation.
(1) Refer to figure 4-9 and install the contact assembly.
(2) Attach accessory case cover with spring clips.
d. Adjustment. Refer to figure 4-10 and adjust the contact assembly.
Step 5. Check for lack of spark at spark plug.
Adjust spark plugs.
a. Removal.
(1) Using figure 4-8 as guide, loosen the connector nut on spark plug end of the cable.
(2) Remove the spark plug from the cylinder bead.
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 insulation. Inspect threads
for burrs or evidence of having been stripped or cross-threaded.
(3) Test 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.
c. Installation
(1) Install spark plug.
(2) When installing the spark plug, 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 6. Inspect for grounded ignition cable.
Replace cable, or locate grounded point and tape for temporary operation.
a. Removal
(1) See figure 4-8 for removal of ignition cable.
(2) Loosen the connector nut on each end of the cable and remove the cable.
b. Inspection
(1) Inspect the braided cables for broken, torn or cut strands.
(2) Inspect connector bodies for cracks, breaks and springs for broken or distorted coils.
(3) Inspect connectors for stripped or damaged threads or distorted nuts.
4-24
