wsm BX1800 Workshop Manual page 144

BX1800 · BX2200, WSM
Fuel Injection Pressure
1. Set the injection nozzle to a nozzle tester (Code No. 07909-
31361).
2. Slowly move the tester handle to measure the pressure at which
fuel begins jetting out from the nozzle.
3. If the measurement is not within the factory specifications,
replace the adjusting washer (1) in the nozzle holder to adjust it.
Fuel injection pressure Factory spec.
(Reference)
• Pressure variation with 0.01 mm (0.0004 in.) difference of
adjusting washer thickness.
Approx. 235 kPa (2.4 kgf/cm
(1) Adjusting Washer
Valve Seat Tightness
1. Set the injection nozzle to a nozzle tester (Code No. 07909-
31361).
2. Raise the fuel pressure, and keep at 12.75 MPa (130 kgf/cm
1849 psi) for 10 seconds.
3. If any fuel leak is found, replace the nozzle piece.
Valve seat tightness Factory spec.
1-S68
13.73 to 14.71 MPa
140 to 150 kgf/cm
1990 to 2130 psi
2
, 34 psi)
No fuel leak at
12.75 MPa
2
130 kgf/cm
1849 psi
ENGINE
2
W10408820
2
,
W10412730
KiSC issued 07, 2006 A