TM 9-4520-260-13
(6) Check that the exhaust does not smoke and check heater for erratic operation.
If heater smokes or
operates erratically, adjust the carburetor.
(a)
See Figure 4-3. For smoke, adjust the fuel
needle (1) on carburetor 1/8 turn clockwise to
reduce fuel flow.
(b)
If smoking persists, turn fuel needle an
additional 1/8 turn clockwise. Allow to run for
one minute and observe heater operation.
(c)
Continue to turn fuel needle 1/8 turn clockwise
until heater performs satisfactorily.
When
heater is burning smoothly, there should be
little or no smoke from the exhaust.
(d)
If heater operates erratically or improperly, turn
fuel needle (1) 1/8 turn counterclockwise to
increase fuel flow. Allow to run for one minute
and observe heater operation. If necessary,
continue to turn fuel needle 1/8 turn
counterclockwise
until
heater
operates
satisfactorily.
Figure 4-3. Adjusting Carburetor.
SECTION II. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
4-5. GENERAL.
This section lists the preventive checks and services to be performed quarterly by Unit Maintenance personnel. Refer to
Operator PMCS paragraphs 2-3 through 2-5 for an explanation of PMCS procedures.
4-6
