TM 3-4230-218-12&P
TROUBLESHOOTING - Continued.
Table 4-2.
Organizational Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
ENGINE WILL NOT START - Continued.
NOTE
The fuel pump will not function properly if a leak exists anywhere on the
suction side of the pump.
(1) Check to see that fuel pump vacuum/pressure line
of cuts and firmly attached to
ease.
(2) Check fuel line from fuel tank
attachment.
b.
If all hoses are good, and properly
does not start, replace fuel pump.
2.
ENGINE RUNS ROUGHLY OR STOPS.
Step 1.
Check for fouled spark plug.
Refer to MALFUNCTION 1, step 2.
3.
pump and to engine
is free
crank-
for cuts and for proper
connected, and engine still
If spark plug is not fouled, proceed to step 2.
Step 2.
Check for defective/ clogged fuel pump filter.
Refer to MALFUNCTION 1, step 6.
If fuel pump is not defective/clogged, proceed to step 3.
Step 3.
Check for water or ice in carburetor bowl.
Refer to MALFUNCTION 1, step 5.
If water or ice is not present, notify direct support maintenance.
LOW ENGINE POWER OR SPEED.
Step 1.
Check for improper governor speed adjustment.
Adjust governor speed (page 4-25).
If governor speed is correct, notify direct support maintenance.
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