14
Once the valve is full of fuel and the pressure has been reached the fuel
pump will still continue to tick, but less frequent. Once the pressure drops in
the valve the pump will then begin to tick more frequent depending on the
demand of fuel from the valve. To lessen the noise of the pump pulsing, a
rubber backing can be installed.
The pump should be included in a control circuit with a 2 amp fuse so it can
be turned off when the heater is not in use. NOTE: If the power to the pump
is shut off, the fuel could still flow through to the pump by way of siphon.
The flow of fuel should be turned off using the shut-off valve near the heater
as well as the oil metering valve.
The pumps can be installed with fuel inlets and outlets up or down, however
mounting the pump with the fuel inlet (spout looking side) on top will give
the pump extra pressure and is easier to clean. The pump will need to be
primed the first time only to remove air in the fuel line. There are 3 check
valves in the pump to prevent the back flow of fuel, so the pump should stay
primed. If the pump does not stay primed then 1 of the check valves in the
pump needs to be cleaned
The pump should be installed in a ventilated area and not near a hot exhaust.
Connect the ground to a negative battery. This pump is not recommended for
gasoline.
Walbro FRD-2 Fuel Pump Upgrade
To upgrade a Walbro FRD-2 (part#15078) to a Heavty Duty pump
(part#15078-1) a factory spring & regulator must be installed. If you find
you are not getting fuel to the valve with the FRD-2 standard pump you may
need the stronger pump with the stronger pressure. Please contact Sig
Marine to order a stronger spring & regulator.
Once you have received a stronger spring and regulator from Sig Marine,
you can upgrade your pump to a stronger pressure. Unscrew the 3 torx
screws (t-20) and with twisting the lid back and forth, pull it straight back
off. Note the pump plunger, spring, check valve, and a very small amount of
fuel will drop out if installed as per diagram. Place the check valve as
shown in the diagram on top of the heavier replacement spring, and the
spring on top of the pump plunger and push it back into the pump body
holding it in with a finger. Note the magnetic part of the plunger is on the
Содержание Sig100
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