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 TM 5-2805-261-13
Table 3-1. Troubleshooting - continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. MOTOR LOSES POWER - continued
Step 2. Water pump not functioning.
Notify organizational maintenance.
Step 3. Check for contaminated (dirty) fuel.
Replace fuel. (See Fuel Mixing Instructions, para 3-3.)
Step 4. Defective spark plugs.
Replace (para 3-10).
Step 5. Fuel pump filter or auxiliary fuel filter partially clogged.
Clean (para 3-15, 3-16).
4. MOTOR VIBRATES EXCESSIVELY.
Step 1. Check for weeds on propeller.
Remove weeds.
Step 2. Check for loose steering friction screw.
Tighten screw. (See Steering Friction Adjustment, para 2-14.)
Step 3. Damaged propeller.
Replace propeller (para 3-14).
Step 4. Carburetor improperly adjusted.
Adjust (para 3-17).
5. MOTOR RUNS BUT MAKES LITTLE OR NO PROGRESS.
Step 1. Check for weeds on propeller.
Remove weeds.
Step 2. Damaged propeller.
Replace (para 3-14).
Step 3. Sheared propeller drive pin.
Replace (para 3-14).
3-6
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