Flushing and Cleaning
If required, flush coolant from generator set. To properly flush coolant, obtain Kit #267999 and use the following procedure:
WARNING
Accidental starting.
Can cause severe injury or death.
Disconnect battery cables before working on generator set (negative lead first and reconnect it last).
Accidental starting can cause severe injury or
death. Disconnect battery cables (remove negative lead first and reconnect it last) to disable generator set before working on any equipment connected to generator. The generator set can be started by remote start/stop switch unless this precaution is followed.
WARNING
Hot coolant and steam.
Can cause severe injury or death.
Before removing pressure cap stop generator, allow to cool and loosen pressure cap to relieve pressure.
Hot coolant can cause severe injury or death. Allow engine to cool and release pressure from cooling system before opening pressure cap. To release pressure, cover the pressure cap with a thick cloth then turn it slowly counterclockwise to the first stop. After pressure has been completely released and the engine has cooled, remove cap. If generator set is equipped with a coolant recovery tank, check coolant level at tank.
1.Disconnect the battery, negative lead first.
2.With engine cooled, remove the
3.Connect kit hose fittings to the engine. Install kit hoses to fittings (if not already done).
4.Connect a garden hose to the female connector of large kit hose. Place the free end of the small kit hose in a
NOTE
Heat exchanger pressure cap MUST be installed.
5.Turn on water supply to flush coolant from engine block. Turn off water supply when clean water is observed coming from hose in bucket.
6.Disconnect garden hose. Place free end of large kit hose into bucket and connect an air hose to the free end of the smaller kit hose. Apply air pressure (40 psi [276 kPa] min.) until water stops flowing from kit hose in bucket. This will remove about 16 fl. oz. (0.47 L) of water from engine block.
NOTE
Engine coolant capacity is 23 fl. oz. (0.68 L).
NOTE
Some small air compressors may not maintain pressure under the required flow conditions. In these cases, it is recommended that the end of the kit hose in the bucket be closed off momentarily until pressure is allowed to build up. After pressure has accumulated, open end to allow water to flow into bucket. Repeat closing and opening end of kit hose, as required.
7.Remove kit hoses with hose fittings from engine.
8.Apply pipe sealant to threads of high water temperature safety shutdown switch and install switch in thermostat housing. Reconnect wiring harness lead to switch.
9.Apply pipe sealant to the
10.Remove cap of coolant overflow bottle and pour contents into a suitable container. Reinstall bottle on unit.
11.Add fresh coolant to coolant overflow bottle. A solution of 50% ethylene glycol and 50% clean, softened water is recommended to inhibit rust/ corrosion and provide freezing protection. Fill to MIN mark. Install coolant overflow bottle cap.
12.Remove heat exchanger pressure cap and add about 5 fl. oz. (0.15 L) of clean, softened water. Then fill remainder of engine with straight coolant (100%) until level is just below the overflow tube opening. Final tighten the
