Check that the circlip (3) and tongue (13) are present on the pump.
Fit the pump drive gear (12) on to the oil pump and secure it by installing the circlip (6) in its groove.

Insert the by-pass valve pump (17), the spring (16) and screw the plug (14). Tighten the plug (14) to a torque of 17 nm (min. 15 Nm - max. 19 Nm) (sect. 3 - 3, Engine torque settings) applying a medium strength threadlocker.

Disassembly of the oil pump
Refitting the oil pumpRemoval of the fuel tank filler cap
Remove tank covers (sect. 5 - 2, Removal of the fuel tank fairings).
Remove hoses (8) and (15) from the filler cap assembly (10).
Open the filler cap.
Unscrew the outer screws (17) securing the ring nut to the filler cap recess.
Remove the filler cap assembly (10).
...
Coolant expansion tank
Plug
Screw
Fuel filler flange
Clip nut
Clamp
Hose clip
Valve/tank hose
Clamp
Screw
Spacer
Rubber mounting
Expansion reservoir
Filler cap
Hose clip
Support
Screw
Washer
Screw
Hose clip
Breather hose
Clamp
Pump/radiator sleeve
Radiator/radiator sleeve ...
Disassembly of gear interlock plunger and pawl assembly
Unscrew the interlock plunger screw (5) and remove the seal (6), spring (7)
and the detent ball (8).
Unscrew the clutch-side crankcase half screw (3) and remove the pawl (4),
washer (2) and spring (1).
...