Fuel Pressure Inspection - Suzuki DF 40 Service Manual

5-5 FUEL SYSTEM

FUEL PRESSURE INSPECTION

1. Relieve fuel pressure in fuel feed line. (See page 5-2)
2. Connect special tools (pressure gauge, pressure hose &
pressure joint) between fuel feed hose and 3-way joint pipe
as shown in figure.
Clamp hose securely to ensure no leaks occur during check-
ing.
09912-58441 : Pressure gauge –
09912-58431 : Fuel pressure hose –
09912-58490 : Fuel pressure joint –
A small amount of fuel may be released when the fuel
feed hose is disconnected.
Place container under the fuel feed hose or 3-way pipe
with a shop cloth so that released fuel is caught in con-
tainer or absorbed in cloth. Place fuel soaked cloth in
an approved container.
3. Squeeze fuel primer bulb until you feel resistance.
Turn ignition switch "ON" for 3 seconds (to operate fuel
pump), then turn it "OFF".
Repeat this ("ON" and "OFF") procedure 3 or 4 times to pres-
surize the fuel system and then check fuel pressure.
4. Measure fuel pressure in line at cranking or idle speed op-
eration.
Fuel pressure : Approx. 235 kPa
(2.4 kg/cm
5. Stop engine and wait 5 minutes.
As fuel feed line is still under high fuel pressure, make
sure to release fuel pressure according to following
procedures.
• Place container under joint to catch fuel.
• Cover joint with rag and loosen joint nut slowly to
gradually release fuel pressure.
2
, 34.1 psi.)
1
2
3
1. High pressure fuel filter
2. Fuel delivery gallery
3. 3-way pipe
OFF
ON
Joint nut