Instruction Manual

PAGE 34 —MQP20P STANDBY GENERATOR • OPERATION AND PARTS MANUAL — REV. #1 (11/28/11)
MAINTENANCE
FLUSHING OUT RADIATOR AND REPLACING
COOLANT
1. Remove radiator cap. Remove the coolant drain plug.
Move the lever to the open position to start draining
out coolant. See Figure 25.
Figure 25. Draining Coolant
2. Flush the radiator by running clean tap water through
radiator until signs of rust and dirt are removed. Do
not clean radiator core with any objects, such as a
screwdriver.
3. Check hoses for softening and kinks. Check clamps
for signs of leakage.
4. Move lever to the closed position and reinstall coolant
drain plug.
5. Replace with coolant as recommended by the engine
manufacturer.
6. Close radiator cap tightly.
Turn to
Open
Radiator
Remove
Radiator Cap
Radiator
Drain
Battery
Charger
Remove
Drain Plug
WARNING
Allow engine to cool before flushing out
radiator. Flushing the radiator while hot
could cause serious burns from water or
steam.
RADIATOR CLEANING
The radiator (Figure 26) should be cleaned with a high-
pressure washer when excessive amounts of dirt and debris
have accumulated on the cooling fins or tube. When using
a high pressure washer, stand at least 5 feet (1.5 meters)
away from the radiator to prevent damage to the fins and
tube.
Figure 26. Radiator Cleaning
VOLTAGE REGULATOR ADJUSTMENTS
When the voltage regulator is defective or broken and is
replaced, the following adjustment procedure needs to be
performed on the newly installed voltage regulator.
Potentiometers
Figure 27 shows the screwdriver adjustable potentiometers
on the front of the voltage regulator.
Figure 27. Voltage Regulator Potentiometers
1. Coarse Voltage Adjust — A screwdriver adjustable
potentiometer on the front of the voltage regulator
VOLTAGE REGULATOR
VOLT
STAB
U/F
1
2
3