TM 5-3740-214-14
Table 5-3. Direct and General Support Maintenance Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE DOES NOT START BUT TURNS OVER (Continued)
d. Set the choke wide open. Remove the air cleaner if necessary.
e. Crank the engine by hand counterclockwise (left: opposite normal rotation).
f. Take eight to ten compression readings.
(1)
The first few turns of the engine, the compression may be as low as 30 psi. After the seventh
turn, the compression should be 90 psi.
(2)
If the compression is less than 90-100 psi, replace the engine.
2. ENGINE DOES NOT TURN OVER
Step 1. Check the electrical wires.
a. The battery cables at the battery terminals and the ground connection and the start button.
b. The wire between the starter and the start button.
(1)
If the wires are ok, go to Step 2.
(2)
If the wires are loose, tighten them and go to Step 1d.
(3)
If the wires and/or insulation are cracked, broken, or frayed, replace them and go to Step 1d.
Figure 5-51. Battery Cable Test
5-46
