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 TM 55-1905-219-14-8
4-5. GENERAL (Continued).
Table 4-2. Portable Fire Pump (P-250) Carburetion Troubleshooting.
NOTE
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Filter - fuel.
Step 1.
Clogged filter element.
Refer to paragraph 4-7.2.
Step 2.
Air leak due to faulty or misplaced filter bowl gasket.
Refer to paragraph 4-7.2.
Step 3.
Faulty fuel line connections.
Refer to paragraph 4-7.2.
2.
Fuel tanks.
Step 1.
Loose filler cap - faulty gasket.
Refer to paragraph 4-7.4.
Step 2.
Faulty fuel line connectors.
Refer to paragraph 4-7.4.
Step 3.
Clogged fuel line.
Refer to paragraph 4-7.4.
Step 4.
Leaks in fuel and air lines.
Refer to paragraph 4-7.4.
Step 5.
Pressure leaks in fuel tank.
Refer to paragraph 4-7.4.
4-12
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