Fuel System - Kubota B2301 Workshop Manual

B2301, B2601, WSM

(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.
Injection timing [D1005] Factory specification
Injection timing [D1105] Factory specification
NOTE
• The sealant is applied to both sides of the shim (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.), 0.30 mm (0.012 in.), 0.35 mm (0.014 in.)
and 0.175 mm (0.00689 in.). Combine these shims for
adjustments.
• Addition or reduction of shim (0.025 mm, 0.00098 in.)
delays or advances the injection timing by approx.
0.0044 rad (0.25 °).
• 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.
(1) Timing Line
(2) Alignment Mark
(3) Shim (Soft Metal Gasket Shim)
(4) Two-holes: 0.20 mm (0.0079 in.)
Two-holes: 0.175 mm (0.00689 in.)
(5) One-hole: 0.25 mm (0.0098 in.)
(6) Without hole: 0.30 mm (0.012 in.)
(7) Three-holes: 0.35 mm (0.014 in.)
1-S17
ENGINE
0.2837 to 0.3097 rad
(16.25 to 17.75 °) after
T.D.C.
0.2662 to 0.3272 rad
(17.25 to 18.75 °) before
T.D.C.
(A) Engine mounted on the tractor
(B) Engine only
9Y1211156ENS0015US0
KiSC issued 11, 2014 A