32
Diesel fuel flow sensor kit Installation and Operation Manual
NAVMAN
tight to prevent leakage.
12 Carefully open the fuel tap at the fuel tank
until fuel drips from the joint at the outlet
of the sensor in the supply line. This
should have filled the pipe and first joint
with fuel - meaning there will be less air in
the system that has to be bled out to start
the engine. Turn the tap off.
13 Tighten the fitting on the outflow side of
the supply sensor with the correct tool.
On a flare nut, use a spanner or wrench
on the flare nut, and another on the flats
of the barrel union. Flare nuts need to be
tight to prevent leakage.
14 On both sensors, turn the bypass valve to
vertical (normal operation).
15 When you have both supply and return
lines connected up and all fittings
tightened, bleed the fuel lines. This is the
same procedure you use after changing a
fuel filter - consult your engine manual.
16 Turn on the fuel tap at the tank. Run the
engine for 5 minutes. Check for pipe
leaks.
17 Do not leave diesel soaked rags in the
boat when you have finished - they are a
fire hazard. Take them out and dispose of
them properly.
18 Continue with installation (see section
7-6).
