Figure 7. Properly Maintained Battery (Cut-Away View)

Maintenance of the M12A1 PDDA
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Lesson 2/Learning Event 1

FIGURE 7.

PROPERLY MAINTAINED BATTERY (CUT-

AWAY VIEW).

Step 6. Check that the oil level in the crankcase is satisfactory: add oil

if necessary.

Set the air control handle located at the bottom of the

crankcase at the rear engine mount.

The down position is the normal

operation position when the temperature is above 0 F. Check that the choke

operates smoothly by pulling out and allowing the spring-loaded choke to

return. Insure that connections are properly fastened. Insure the valves

are operating freely. Close all valves, including the pump-drain valve.

Step 7. Check that a gun assembly is on each of the discharge hoses. Make

sure the gun handle operates the valve. Close the valves. Check all hoses

for damage, and worn, broken, or damaged threads on the swivel coupling or

cuts that could cause leaks.

Step 8.

If the M2 Water Heater is used, see that the motor, pump, and

magneto all turn freely together.

Check that the fan is not blocked and

turns freely.

Step 9. If the M2 Water Heater is used, check the electrical power cable

for cracks, deterioration, bare or frayed wire, and kinks. Set the voltage

regulator switch on the pump-unit control panel to OFF before plugging the

electrical power cable into the pump unit.