Engines with Mechanically
Operated Priming Pumps
Illustration 51 g03721133
Typical example.
1. Loosen the vent screw on the secondary fuel filter.
Note: The fuel priming pump is mechanically
operated by the camshaft. In curtain positions the
camshaft lobe can act upon the arm of the fuel
priming pump reducing the hand priming pump ability
to prime. This condition will be felt as low resistance
on the operating arm. Rotating the crankshaft will
move the camshaft lobe acting on the priming pump
arm. Rotating the camshaft will allow the priming
pump full ability to prime.
2. Operate the lever (1) on the priming pump. When
fuel free from air can be seen, close the vent
screw. Tighten vent screw securely.
3. The fuel injection pump will self vent. Turn the
keyswitch to the ON position and operate the lever
on the priming pump. Operate the pump by hand
for 2 minutes and then stop.
4. Turn the keyswitch to the OFF position and then
start the engine. Operate the engine with no load
for 60 seconds and then shutdown the engine.
5. Wait 30 seconds and start the engine. This
procedure will remove any air that could be
trapped within the fuel injection pump. Check for
leaks in the fuel system.
Refer to this Operation and Maintenance Manual,
“Starting the Engine” for more information.
i05910440
Fuel System Primary Filter
(Water Separator) Element -
Replace
Fuel leaked or spilled onto hot surfaces or electri-
cal components can cause a fire. To help prevent
possible injury, turn the start switch off when
changing fuel filters or water separator elements.
Clean up fuel spills immediately.
NOTICE
Ensure that the engine is stopped before any servic-
ing or repair is performed.
Type 1 Fuel Filter Remove
1. Turn the fuel supply valve (if equipped) to the OFF
position before performing this maintenance.
2. Clean the outside of the fuel filter assembly before
removal. Install a suitable container below the filter
assembly. Drain the water separator. Refer to
Operation and Maintenance Manual, “Fuel System
Primary Filter/Water Separator - Drain” for the
correct procedure.
SEBU7833 73
Refill Capacities
Fuel System Primary Filter (Water Separator) Element - Replace
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