Stamford D5A T, Operator'S Manual

Page: 38 / 70

38
Maintenance: Fuel System
Twin fuel pre-filter/water separator
The twin filter is equipped with a pressure gauge (1).
The filter inserts must be changed according to the
maintenance schedule or earlier if the pressure gauge
indicates a vacuum of 6–10 inHg at no load or 16–20
inHg at full load.
Draining the filter
Place a receptacle under the filter. Drain off water and
contaminants through the plug (5).
Valve positions
The flow of the fuel is governed by putting the handle
in the following positions:
A: Normal running (both filters connected).
B: Left filter insert can be changed.
C: Right filter insert can be changed.
D: Both filters turned off.
Changing the filter elements
If the engine is not running close the fuel cocks on the
tank before changing filters. If the engine is running
cut off the flow of fuel through the filter to be changed
with the handle (2) on the filter itself. Place a recepta-
cle under the filters.
1. Undo the T-bolt (3) remove the cover (4) and take
out the filter insert carefully while turning it.
2. Drain off water and contaminants through the drain
plugs (5).
3. Fit a new filter insert and fill the container with cle-
an fuel.
4. Change the gasket on the cover and the O-ring on
the T-bolt. Moisten the gasket and O-ring with fuel
before assembling.
5. Fit the cover and tighten it by hand. Wipe off any
fuel from the heat shield.
6. Change the other filter in the same way.
7. Open the fuel cocks and put the handle in position
for normal running. Make sure there are no leaks.