18 - Fuel and Exhaust System
18 - Injection
21 - Governor
18 - 38 9813/4450-2 18 - 38
12. Install the DTI into the DTI holder until the
extension on the DTI touches the rack of the fuel
injection pump.
13. Push the assembled DTI and the extension into
the DTI holder further to the specified distance.
Dimension: 2mm
Figure 278.
MDTI
NDTI holder
PCrankcase adaptor
RCrankcase
14. Lock the DTI holder to retain the DTI in position.
Set the DTI to the specified dimension.
Dimension: 2 ± 0.01mm
15. Push the plunger of the DTI several times to seat
the rack of the fuel injection pump. When the
plunger is gently released, check that the DTI
reads the specified dimension.
Dimension: 2 ± 0.01mm
16. If the rack of the fuel injection pump has heavy
resistance to movement:
16.1. Remove the DTI.
16.2. Remove the fuel injection pump.
16.3. Wash the fuel injection pump with a
suitable cleaner.
16.4. Install the fuel injection pump.
16.5. Repeat the steps 12 to 15.
17. Do the calibration of the fuel screw and the front
housing. Refer to (PIL 18-18).
Final Installation of the New Front Case
1. Remove the DTI and the DTI holder. Refer to
Figure 277.
2. Remove the crankcase adaptor. Refer to Figure
277.
3. Remove the fuel injection pump. Refer to (PIL
18-18).
4. Remove the front case. Refer to (PIL 15-51).
5. Remove the calibration spring and install the
original start spring. Refer to Figure 276.
6. Remove the Allen head screw from the lever
assembly. Refer to Figure 275.
7. Install the new gasket on the front case. Make
sure that the gasket is clean and free from
damage. Refer to Figure 274.
8. Install the new front case. Refer to (PIL 15-51).
9. Set the protrusion of the high idle stop screw to
the same dimensions as the stop screws on the
original front case. Refer to Figure 272.
10. Set the protrusion of the low idle stop screw to
the same dimensions as the stop screws on the
original front case. Refer to Figure 272.
11. Set the high idle trimmer screw as follows: Refer
to Figure 273.
11.1. Release the locknut.
11.2. Set the high idle trimmer screw to the fully
out position.
11.3. Turn the screw clockwise for two turns.
11.4. Tighten the locknut.
12. Install the fuel injection pump. Refer to (PIL
18-18).
13. Start the engine and allow the engine to reach
the normal operating temperature.
14. Run the engine at low idle and adjust the low
idle stop screw to the speed that was previously
recorded, prior to the original front case removal.
15. Run the engine at high idle and adjust the high
idle stop screw to the speed that was previously
recorded as Speed B.
16. Run the engine at high idle and release the
locknut.
17. Adjust the high idle trimmer screw to the speed
that was previously recorded as Speed A.
18. Tighten the locknut.
18.1. Make sure that the recorded Speed B is
lower than the recorded Speed A.
19. Make sure that the engine operates correctly.
