Yanmar 3TNV82A Service Manual page 256

FUEL SYSTEM
4-Valve Cylinder Head
1. Reinsert a new nozzle seat (Figure 7-56, (6))
and nozzle protector (Figure 7-56, (5)) in the
cylinder head for each injector.
2. Reinstall a O-ring on to each injector body.
3. Reinsert each fuel injector (Figure 7-56, (4))
into the cylinder head.
4. Reinstall the fuel injector retainers
(Figure 7-56, (3)) and torque the retaining bolts
(Figure 7-56, (2)) to specification.
5. Reinstall the fuel injector return line assembly
using new gaskets on each side of the injector
line screws.
6. Reinstall the fuel high-pressure fuel lines to
each injector and tighten the nuts using a "line"
or "flare nut" wrench.
(4)
(5)
(6)
Figure 7-56
7. Prime the fuel system. See Priming the Fuel
System on page 4-12.
7-38
(2)
(1)
(3)
0002088
8. Operate the engine and check for fuel and
coolant leaks.
TNV DI Service Manual
Fuel Injectors