Checking And Adjusting Fuel Injection Timing; Checking Fuel Injection Timing - Yanmar 2TNV70 Service Manual

FUEL SYSTEM
(1)
(4)
Figure 7-21
15. Reinstall the cooling fan V-belt
(Figure 7-21, (1)). Adjust as described in
Check and Adjust Cooling Fan V-Belt on
page 5-15.
16. Reinstall the cooling fan guard (if equipped).
17. Prime the fuel system. See Priming the Fuel
System on page 4-14.
18. Operate the engine and check for fuel and lube
oil leaks.
CHECKING AND ADJUSTING
FUEL INJECTION TIMING
Note: The following procedure is performed on
the No. 1 cylinder. While checking and
adjusting the timing on only No. 1
cylinder is usually sufficient, the same
procedure can be performed on any or
all cylinders.

Checking Fuel Injection Timing

Note: Some fuel may drain from the fuel
injection pump during this process. Make
provisions to contain and dispose of any
such spillage.
1. Ensure the fuel injection pump is primed with
fuel. See Priming the Fuel System on
page 4-14.
7-18

Checking and Adjusting Fuel Injection Timing

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(2)
0000163A
2. Clean the area around the fuel injection pump.
Note: The stop solenoid must be removed to
allow fuel to flow through the fuel
injection pump.
3. Remove two screws (Figure 7-22, (1)).
Remove the stop solenoid (Figure 7-22, (2))
and O-ring (Figure 7-22, (3)).
(2)
(1)
Figure 7-22
4. Set the throttle to the HIGH-IDLE position.
5. Using a wrench on the crankshaft pulley bolt,
rotate the crankshaft in a clockwise direction
while looking through the flywheel inspection
port (Figure 7-23, (1)). Rotate the crankshaft
until the injection timing marks on the flywheel
are visible for No. 1 cylinder.
TNV IDI Service Manual
(3)
0002468