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TM 10-4130-239-14
Table 4-2.
Unit Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
ENGINE FAILS TO START WITHOUT EXTERNAL POWER OR CRANKS BUT FAILS
TO START WITH EXTERNAL POWER.
Step 1. Inspect choke for proper operation.
Adjust choke as required (para 4-27).
Step 2. Check fuel line and fuel filter for damage or blockage.
Repair fuel line or replace fuel filter (para
4-43) .
Step 3. Check spark plugs for gap, fouling or damage.
Clean, adjust
or replace spark plugs (para 4-30).
Step 4. Check carburetor for damage or blockage.
Replace carburetor (para 4-27).
Step 5. Test toggle switch S3 (para 4-18) and pneumatic timer
switch (S8) (para 4-19).
Replace toggle switch S3 (para 4-18) or pneumatic
timer switch (S8) (para 4-19).
Step 6. Test armature group (para 4-31).
Replace armature group (para 4-31).
Step 7. Check engine compression (para 4-25).
Should not vary
more than 25 percent between cylinders.
If greater than 25 percent variance, notify your
supervisor.
4-15
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