Replacing the engine crankshaft speed sensor must be carried out in the following order.
Remove starter and disconnect AL (1, fig. 6.141) from the engine speed sensor. Take out the counterpart (2) AL from the holder. Remove bolt (3) fasteners and remove the speed sensor.
When installing, lubricate the O-ring of the sensor with a thin layer of Vaseline. Install the speed sensor and secure it with the bolt. Assemble the engine.