For access to the oil pump, the timing cover must be removed (page 1). Remove the three button headed screws (5mm Allen key) and lift the timing steady plate, leaving the thrust washers and spindles in place. It is not necessary to remove the timing steady plate completely.
NOTE:- Take care when tightening the top two oil pump housing screws, as the thread engagement into the crankcase is relatively shallow.
To dismantle the pump, remove the three socket screws (5mm Allen key), holding the pump to its housing.
The pump should be examined for signs of damage, especially to the mating surfaces of the two rotors. The maximum clearances are as shown: When refitting the outer rotor, note that the chamfer on one outer edge should be fitted into the oil pump casting.
