Injection Timing: Adjustments

Inspection and Adjustment of Fuel Injection Timing

Service standards







Tightening torque







Special tools







[Inspection]







NOTE: Set the starter switch to "LOCK" or "ACC" before starting operation.

- Loosen lock nut 1 of control cable bracket 2 and remove from the bracket slit.
- Pull governor stop lever 3 toward STOP direction.
- Remove cable end 5 of engine stop cable 4.







- Remove union nut 6 of the injection pipe, delivery valve holder 7, stopper 8, delivery valve spring 9 and delivery valve 10 from the injection pump of NO.1 cylinder.
- After removing these parts, install delivery valve holder 7.

CAUTION: Be sure to keep all the removed parts in gas oil to keep them free from dirt.







- Mount extra injection pipe 11 on NO.1 cylinder. Direct the free end of the pipe downwards so that the fuel discharge can be clearly observed.

A: Oil tray







- Turn the crankshaft more than 180° in the forward running direction and bring NO.1 cylinder to approximately 30° before top dead center in the compression cycle.

NOTE: Refer to the location where there are 30° gradations, since angle gradations on the crankshaft pulley side only extend to 20°.







- Turn the engine in the forward running direction slowly while discharging fuel from injection pipe 11, deliver fuel using priming pump 12.
A: Oil tray

- When the discharge of fuel from injection pipe 11 becomes intermittent, turn the crankshaft slower, stop turning the crankshaft when the discharge stops completely.







- Make sure that indent 13 on the crankshaft pulley and pointer 14 on the timing gear case show the standard fuel injection timing.