4TNV98 & 4TNE98 Diesel Engine Section 4. Fuel System194Figure 7-4611. Reconnect the throttle linkage.12. Reconnect the electrical connection to themagnetic valve (stop solenoid) (Figure7-46, (1)).13. Reinstall fuel tank return line.14. Reinstall fuel injector return line.15. Reinstall fuel supply line to the fuel injectionpump.16. Prime the fuel system and check for leaks.Checking / Adjustment Of FuelInjection Timing1. Using a wrench on the front crankshaft pulleybolt, rotate the engine clockwise until the timingmark on the crankshaft pulley is aligned with the“O” or TDC (Top Dead Center) mark on thetiming grid of the gear case cover.2. Remove the center bolt (Figure7-47, (1)) andsealing washer from the rear of the fuel injectionpump.Figure 7-473. Locate Yanmar timing tool (P/N 119770-02020)(Figure7-48, (1)). Install a dial indicator into thetiming tool.Figure 7-48
