Cub-cadet Yanmar 3TNV72 User Manual download pdf (Page 180)

FUEL SYSTEM

TNV IDI Service Manual

7-19

Checking and Adjusting Fuel Injection Timing

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 5-27.

16. Reinstall the cooling fan guard (if equipped).

17. Prime the fuel system. See Priming the Fuel

System on page 4-12.

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 4-12.

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)).

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.

(1)

(4)

(3)

(2)

0000163A

0002468

(1)

(2)

(3)

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