Yanmar 1GM User Manual page 155

FUEL INJECTION AND GOVERNOR SYSTEMS 149
19. Connect the high-pressure fuel line to the injector.
20. Install the retainer plate so the side with bumps (Fig-
ure 32) is down and contacts the injector.
21. Install the retaining nuts . Tighten the nuts evenly to
20 Nem (14.5 fl.-lb .).
22. Connect the fuel return line.
23. Reattach fuel line retaining brackets.
24. Bleed the fuel injection system as described in this
chapter. Run the engine and check for leaks.
FUEL INJ ECT ION PUMP
The fuel injection pump is built to precise specifications
and is easily damaged by contamination from dirt or de-
bris . Due to the close tolerances in the pump and the spe-
cial tools and equipment required for overhaul and
testing, have a Yanmar dealership or diesel fuel injection
shop perform any unnecessary service .
Remova l a nd Inst allation
WARNING
Serious fire hazards always exist around
diesel fuel. Do not allow any smoking in ar-
eas where fuel is present. Always have afire
extinguisher. rated for fuel and electrical
fires, on hand when servicing any part ofthe
fuel system.
I. Close the fuel shutoff valve.
2. Thoroug hly clean the fuel injection pump and the area
around the pump of all debris.
NOTE
Plug or cap allfuel openings to prevent the
entrance ofdebris.
3. Detach the fuel supply line from the fuel injection
pump (A, Figure 33).
4. Unscrew the fuel line retaining brackets. Remove the
fuel injection line(s) between the fuel injection pump and
fuel injec tor(s) (8, Figu re 33).
5. Remove the injection pump retaining nuts (C, Figure
33) .
NOTE
Removing the oil fill cap on lGM and
I GM I0 models provides access to the gov-
7