Manual Dickinson Marine Newport (page 15 of 41) (English)

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Form#7.2-229 Issue#2

7. Walbro Fuel Pump Installation

When installing a Walbro fuel pump you must ensure it is mounted

approximately at the level of the valve on the heater. These pumps can

“pull” fuel but have trouble “pushing” fuel so it must be gravity fed from the

pump to the heater. The lift and the climate will then indicate if you need the

standard pump (part#20-000) or the heavy duty pump (part#20-002). We

highly recommend the heavy duty pump for all installs so you have the

option of adjusting the pressure if needed.

The standard pump Walbro’s FRD-2 part# 20-000 is a 12v DC pump with a

pressure of 3psi. It is for a standard installation where the climate is fair and

fuel run from the fuel supply to the pump is less then approx. 4ft vertical and

15ft horizontal.

The heavy duty pump part# 20-002 is Walbro’s FRD-2 12v DC pump with a

factory retrofitted pressure spring and an adjustable pressure regulator

installed for a higher pressure pump for a heater installation in a colder

climate and where the fuel run from the fuel supply to the pump is higher

then approx. 4ft vertical and 15ft horizontal. This pressure regulator will

adjust the pressure higher or lower to the oil metering valve.

*If using the heavy duty fuel pump part# 20-002, the adjustable pressure

regulator attached has a thread size of 1/8” NPT. It is soft die cast aluminum

so use caution when connecting the fittings. The numbered settings are only

for reference because depending on the fuel supply installation and the

climate will depend on the pressure of each setting. Disconnect the fuel line

at the valve and allow the pump to push the air out of the fuel line to see a

constant flow of fuel going into a bucket. Set the regulator to the lowest

setting. Watch the flow of fuel. Adjust the regulator setting until there is a

constant flow of fuel pouring into the bucket. If you have adjusted the

regulator to the highest setting with still no constant flow of fuel, the

regulator can be adjusted. Pierce a hole in the sticker on the center of the

knob with a 5/64

Allen wrench and turn the adjusting screw clockwise ½ a

turn.

To prime the pump, pump fuel into a container to remove all the air in the

fuel lines. After a cup of fuel has been pumped, reconnect fuel line to the

valve. If there is no fuel getting to the pump or there’s air in the fuel line the

pump can make a chattering noise.

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Dickinson Marine Newport Manual

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