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Procedure:
1. Turn the fuel lever to the closed position until it stops to
shut off the fuel.
2. Loosen the ring nut, remove the cup together with the
element, and drain the fuel.
3. Clean the cup, install the element and tighten to the filter
body with the ring nut.
4. Turn the fuel filter lever to the open position until it
stops.
CAUTION:
1) If the cup is removed without turning the fuel
filter lever just above, the fuel may flow out.
2) The cartridge and cup contain fuel. Take care
not to spill it during disassembly.
3) Perform fuel system air bleeding after the water
in the fuel is drained.
(2) Fuel System Air Bleeding
NOTE:
Does not apply to Hustler Diesel Z equipment.
The entry of air into the fuel system will cause hard engine
starting or engine malfunction.
After servicing the fuel system; such as emptying the fuel
tank, fuel system water removal, and the fuel filter element
change, be sure to bleed the air from the system.
Because of the "automatic air-bleeding system" being
employed, turn the starter switch to the "RUN" position and
activate the "electromagnetic pump" to bleed the air.
Air bleeding procedure:
1. When the "starter switch" is set to the "Drive" (ON) posi-
tion to activate the electromagnetic pump, fuel is forcibly
sent to the fuel valve of the injection pump and further to
the leak-off pipe of each nozzle holder, where air in the
fuel leaks off automatically to the fuel tank.
2. Start the engine and check the fuel system for fuel enter-
ing the tank.
(3) Fuel Filter Element Change
Change interval
Fuel filter element change interval :
Every 200
operating
hours or every season.
Change procedure
1. Turn the fuel filter lever to the closed position.
CAUTION:
If the cup is removed without turning
the lever as instructed, the fuel may flow out.
2. Loosen the ring nut, remove the cup, and take out the ele-
ment.
3. Clean the cup, install a new element, and install new
packing on the ring nut.
4. Tighten the cup to the body securely with the ring nut.
5. After installation, turn the fuel filter lever to the open
position.
WARNING:
1. With the fuel lever in the “OFF” position, the
engine cannot be started.
2. Be careful not to spill fuel on surrounding areas
when removing the fuel cap.
3. After changing the fuel filter element bleed the
air from the system.
(4) Governor Control Seals
As the governor (timing gear case) is precisely adjusted,
most of the controls are sealed, please do not break them.
CAUTION:
The warranty of the engine can be
affected if the tamper proof seals on the cylinder
block in back of the timing gear case are broken
during the warranty period by a person who is not
authorized by the manufacturer.
7.4 Air Intake System
(1) Air Cleaner
Engine performance and life vary with the air intake con-
ditions. A dirty air cleaner element reduces the amount of
intake air, causing reduced engine output and/or a poor run-
ning engine.
Also, a damaged element leads to wear of cylinders and
valves, resulting in increased oil consumption, reduced output
and shortened engine life.
Replace the air cleaner element annually or if the air
restriction indicator shows that the element needs replaced.
CAUTION:
1. Change the element, if element damage is
found.
2. Make sure the air filter seals when reassembling
the air cleaner.
7.5 Engine Electrical
The Shibaura engine uses a 12 volt system and a negative
grounding type for the electrical system.
(1) Battery Servicing
Battery maintenance schedules will vary with equipment
and battery types.
Follow the equipment manufacturer's instructions.
Summary of Contents for E673L
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