Coolant Recovery Tank; How To Bleed The Fuel System; Figure 8: Engine Coolant Recovery Tank - Westerbeke 3.5 MCGA 60 Hz Operator's Manual

Operator Manual for Gasoline Generators
The distilled water and antifreeze should be pre-mixed before being poured into the cooling
circuit.
Refer to section 5.3 for filling the cooling system.
TIP: Use the environmentally-friendly, long-lasting antifreeze that is now available. A proper 50/50
mixture as recommended will protect the engine coolant at temperatures as low as -40° F.
4.5

Coolant Recovery Tank

A coolant recovery tank kit is supplied with each generator to allow for engine coolant
expansion and contraction during engine operation without the loss of coolant and without
introducing air into the cooling system. This tank is best located at or above the level of the
engine exhaust manifold.
4.6

How to Bleed the Fuel System

The initial setup of the generator requires that you or your mechanic bleed the air from the
fuel system. This procedure, known as priming or bleeding the fuel system, is also required
whenever the fuel filters are serviced.
1. Disconnect the fuel module from the engine wiring harness.
2. Attach your fuel pressure gauge set (Snap On #MT337B, OTC 7211) or equivalent to the
Schrader valve on the fuel module. Direct the bleed hose from the pressure gauge into a
proper container.
3. Open the bleed valve on the pressure gauge, press the STOP switch, and hold it depressed.
This activates the low-pressure fuel pump.
4. Observe the fuel flow through the bleed hose. When no air bubbles are seen, release the
STOP switch to close the bleed valve and observe the fuel pressure (typically about 8-10+
psi).
5. Remove the pressure gauge from the fuel module and connect it to the Schrader valve on
the fuel rail.
6. Re-connect the fuel module to the engine harness.
7. Open the bleed valve on the fuel pressure gauge. Press the STOP switch and hold it
depressed. This activates both the low-pressure and high-pressure fuel pumps. Observe the

Figure 8: Engine Coolant Recovery Tank

4 Startup and Basic Operation
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