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TM 10-4320-316-14
Table 4-3. Unit Troubleshooting. - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. HANDLE PULLS, BUT ENGINE FAILS TO START. - Continued.
Step 3. Check for clogged fuel line hoses.
Disconnect and check all fuel line hoses for clogging. (See para. 4-30).
If fuel lines are clogged, clean them.
If fuel lines are not clogged, proceed to step 4.
Step 4. Check for defective fuel injection pump.
Disconnect fuel injection line from fuel injection pump. (See para. 4-30).
Pull recoil starter handle a few times to check that fuel flows from fuel injection
pump outlet.
If fuel does not flow from fuel injection pump outlet, replace fuel injection pump.
(See para. 4-34).
If fuel flows from fuel injection pump, reconnect fuel injection line to fuel
injection pump and notify Direct Support Maintenance.
3. ERRATIC RUNNING OR FREQUENT STALLING.
Step 1. Check for clogged air cleaner element.
Remove air cleaner element and check for clogging (see para. 3-7). Replace
clogged air cleaner element.
If air cleaner element is not clogged, proceed to step 2.
Step 2. Check for defective fuel cock or clogged fuel outlet filter.
Remove fuel cock and check for proper operation (see para. 4-29). Replace
defective fuel cock.
Remove fuel outlet filter and check for clogging (see para. 4-29). Replace clogged
fuel outlet filter.
If fuel cock is not defective and fuel outlet filter is not clogged, proceed to step 3.
Step 3. Check for defective fuel injection pump.
Refer to Malfunction 2, Step 4.
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