TM 5-3740-214-14
Table 5-3. Direct and General Support Maintenance Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
THE ENGINE IS HARD TO START (Continued)
d.
Disassemble the carburetor and make sure gasoline is getting to the carburetor.
(1)
Remove the bowl screw, gasket and bowl and baffle gasket.
(2)
Remove the float pin, float needle and needle seat. If the float is dented or has pin holes,
replace it. If the float leaks or is worn, replace it.
(3)
Check the needle and seat for damage. If they are cut or scratched, replace them and go to
Step 1e.
CAUTION
DO NOT use hard metal objects or tools to clean the inlet port.
Use something soft like a
toothpick and flush the port with alcohol or acetone.
(4)
Unplug the inlet port if necessary and go to Step 1e.
(5)
If the choke is worn or damaged, replace the whole carburetor and go to Step 2.
Figure 5-72. Carburetor Float Adjustment
e.
Assemble the carburetor.
(1)
Install the seat needle float and pin.
(2)
Set the float level. Turn the carburetor upside down and let the float rest on the needle. The
clearance between the machined surface of the carburetor and the free end of the float should
be 0.17 inches 0.03 inches (4.32 mm 0.76 mm).
(3)
Adjust the clearance by bending the float tab with a screwdriver if necessary.
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