62--11161
5--1
SECTION 5
FUEL SYSTEM
5.1 CHECKING AND ADJUSTING
1
2
3
4
5.1.1 Injection Timing
1. Remove the injection lines.
2. Remove the engine stop solenoid (when applicable).
3. Turn the flywheel counterclockwise (facing the fly-
wheel) until fuel flows from the delivery valve holder.
4. Turn the flywheel further and stop turning when the
fuel level at the tip of the delivery valve holder begins
to increase.
5. Check to see which of the timing angle lines (1) on the
flywheel is aligned with the alignment mark (2).
Injection Timing
Factory
Specification
0.33 to 0.37 rad.
19
°
to 21
°
B.T.D.C.
NOTE
Injection timing adjustment is accomplished by
adding or removing shims under the injection
pump.
The timing advances by removing one shim and
retards by adding the same shim.
The addition or removal of 0.05 mm (0.002 in.)
of shim, changes the injection timing by approx-
imately 0.087 rad. (0.5
°
).
Sealant should be applied to both sides of the
soft metal gasket shim.
Injection Timing
Map
Rated Speed
Rated Speed
Specification
3000 to 2501
0.30 to 0.33 rad.
17
°
to 19
°
B.T.D.C.
2500 to 2001
0.26 to 0.30 rad.
15
°
to 17
°
B.T.D.C.
Under 2000
0.23 to 0.26 rad.
13
°
to 15
°
B.T.D.C.
5.1.2 Shim Identification
NOTE
Shims are available in thicknesses of 0.20 mm,
0.25 mm, 0.30 mm, and 0.35mm. Combine
shims for adjustments.
Refer to the figure below to check the thickness of shims
1. Shim (soft metal)
2. 2--Holes: 0.20 mm shim
3. 1--Hole: 0.25 mm shim
4. 0--Holes: 0.30 mm shim
