MQ Power WHISPERWATT Series Operation Manual page 43

DRAINING ENGINE COOLANT
WARNING
DO NOT remove the pressure cap from the radiator
when the engine is hot! Wait until the coolant
temperature is below 120°F (50°C) before removing
the pressure cap.
Heated coolant spray or steam can cause severe
scalding and personal injury.
1. Remove the radiator pressure cap (Figure 65) only if
the coolant temperature is below 120°F (50°C).
CORRECT
180
140
220
°F
100 260
WATER TEMP
PRESSURE
CAP
Figure 65. Radiator Pressure Cap Removal
2. Open the cabinet door and remove the coolant drain
bolt and O-ring (Figure 66), then allow the coolant to
drain into a suitable container.
4 0
Figure 66. Draining Radiator Coolant
DCA40SSKU4F2 60 HZ GENERATOR • OPERATION MANUAL — REV. #2 (08/30/22) — PAGE 43
180
140
220
°F
100 260
WATER TEMP
COOLANT
DRAIN BOLT
AND O-RING
FLUSHING OUT THE RADIATOR
AND REPLACING COOLANT
„ Open both cocks located at the crankcase side and at
the lower part of the radiator and drain the coolant. Open
the radiator cap while draining. Remove the overflow
tank and drain.
„ Check hoses for softening and kinks. Check clamps for
signs of leakage.
„ Tighten both cocks and replace the overflow tank.
„ Replace with coolant as recommended by the engine
manufacturer.
„ Close the radiator cap tightly.
„ Flush the radiator by running clean tap water through
the radiator until signs of rust and dirt are removed.
DO NOT clean the radiator core with any objects, such
as a screwdriver.
WARNING
Allow the engine to cool when flushing
out the radiator. Flushing the radiator while
hot could cause serious burns from water
or steam.
MAINTENANCE