Change the fi lter elements
If the engine is not running close the fuel cocks on
the tank before changing fi lters. If the engine is run-
ning cut off the fl ow of fuel with the handle (1) on the
fi lter itself.
1. Place a receptacle under the fi lters and shut off
the fi lter to be changed.
2. Undo the T-bolt (2) and remove the cover (3).
3. Take out the insert carefully while turning it.
4. Drain off water and contaminants through the
drain plug (4).
5. Fit a new fi lter insert and fi ll the container with
clean fuel.
6. Change the gasket on the cover and the O-ring
on the T-bolt. Moisten the gasket and O-ring with
fuel before assembling.
7. Fit the cover and tighten it by hand.
8. Wipe off any fuel from the heat shield.
9. Change the other fi lter in the same way.
10. Open the fuel cocks and put the handle in posi-
tion for normal running. Make sure there are no
Twin fuel pre-fi lter/water separator
The twin fi lter is equipped with a pressure gauge
(1). The fi lter 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.
Drain
Place a receptacle under the fi lter. Drain off water
and contaminants through the plug (D).
Valve positions
The fl ow of the fuel is governed by putting the handle
(1) in the following positions:
A: Normal running (both fi lters connected).
B: Left fi lter insert can be changed.
C: Right fi lter insert can be changed.
D: Both fi lters turned off.
66
Maintenance: Fuel System
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