Fuel System: 1G-12
4) Connect special tools (pressure gauge, pressure
hose and pressure joint) between fuel feed hose (1)
and fuel delivery pipe upper union as shown in
figure. Tighten the delivery pipe upper plug (3) to
specified torque.
Clamp the hose securely to ensure that no leaks
occur during checking.
CAUTION
A small amount of fuel may be released when
the fuel feed hose is disconnected.
Place container under the fuel feed hose or
fuel delivery pipe upper union with a shop
cloth so that the released fuel is caught in the
container or absorbed by the cloth. Place the
fuel soaked cloth in an approved container.
Special tool
(A): 09912–58442 (Fuel pressure gauge)
(B): 09912–58432 (Fuel pressure hose)
(C): 09912–58490 (3-way joint & hose)
Tightening torque
Delivery pipe upper plug (a): 35 N·m (3.5 kgf-m,
25.5 lbf-ft)
5) Ensure the emergency stop switch lock plate is in
place.
Shift into “Neutral” position.
6) Squeeze fuel primer bulb until you feel resistance.
7) Turn ignition switch “ON” for 3 seconds (to operate
the fuel pump), then turn it “OFF”.
8) Repeat this (“ON” and “OFF”) procedure 3 or 4 times
to pressurize the fuel system and then check the fuel
pressure.
9) Check for any signs of fuel leakage.
WARNING
!
When the engine is running, keep your
hands, hair, clothing, etc., away from the
engine.
10) Measure fuel pressure at cranking or idle speed
operation.
Fuel pressure
Standard: Approx. 255 kPa (2.55 kg/cm
2
, 36.3
psi.)
11) Stop engine and wait 5 minutes.
Check the residual fuel pressure in line.
Residual fuel pressure
Standard: 200 kPa (2.0 kg/cm
2
, 28.4 psi.) or more
CAUTION
The fuel feed line is under high fuel pressure,
make sure to release fuel pressure according
to the fuel pressure relief procedures
mentioned earlier.
Use the following procedures to remove the
fuel pressure gauge.
• Place a container under the joint to catch
the fuel.
• Cover the joint with rag and loosen joint
nut slowly to gradually release any
residual fuel pressure.
1. High pressure fuel filter 3. Delivery pipe upper union
2. Fuel delivery pipe
(a)
3
I9J011170027-03
(A)
(B)
(C)
2
3
1
I9J011170017-01
OFF
ON
I9J011170018-01
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