Kubota GR1600EC2, Workshop Manual, Page: 82 / 241

1-S15
GR1600EC2, WSM ENGINE
Radiator Water Leakage
1. Pour a specified amount of water into the radiator.
2. Set a radiator tester (1) (Code No. 07909-31551) and an adapter
(2) (BANZAI Code No.:RCT-2A-30S) and raise the water
pressure to the specified pressure.
3. Check the radiator for water leaks.
4. For water leak from the pinhole, repair with the radiator cement.
When water leak is excessive, replace the radiator.
W1016903
(4) Fuel System
Injection Timing
1. Remove the injection pipes.
2. Remove the engine stop solenoid.
3. Turn the flywheel counterclockwise (facing the flywheel) until fuel
flows from the delivery valve holder.
4. Continue to turn the flywheel slowly, and stop it as soon as the
fuel level at the tip of the delivery valve holder begins to increase.
5. Check to see if the timing angle lines on the flywheel is aligned
with the alignment mark (2).
6. If the injection timing is out of adjustment, readjust the timing with
shims.
NOTE
■
• The sealant is applied to both sides of the shims (soft metal
gasket shim). The liquid gasket is not required for
assembling.
• Shims are available in thickness of 0.20 mm (0.0079 in.), 0.25
mm (0.0098 in.) and 0.30 mm (0.0118 in.). Combine these
shims for adjustments.
• Addition or reduction of shim (0.05 mm, 0.0020 in.) delays or
advances the injection timing by approx. 0.0087 rad. (0.5 °).
• In disassembling and replacing the injection pump, be sure
to use the same number of new shims with the same
thickness.
• Refer to figure below to check the thickness of the shims.
W1018724
Radiator water leakage
test pressure
Factory spec.
157 kPa
1.6 kgf/cm
2
23 psi
(1) Radiator Tester (2) Adaptor
Injection timing Factory spec.
0.31 to 0.33 rad (18 to
20 °) before T.D.C.
(1) Timing Line
(2) Alignment Mark
(3) Shim (Soft Metal Gasket Shim) (4) Two-holes : 0.20 mm (0.0079 in.)
(5) One-hole : 0.25 mm (0.0098 in.)
(6) Without hole : 0.30 mm (0.0118 in.)
KiSC issued 07, 2006 A