7 - | Air intake

1 | Clamp

2 | Oil breather hose

3 | Bush

4 | Cap

5 | Pin

6 | Screw

7 | Nut

8 | Airbox cover

9 | Air filter element

10 | Support

11 | Clamp

12 | Hose

13 | Screw

14 | Breather valve

15 | O-ring

16 | Screw

17 | Spacer

18 | Airbox

19 | Rubber

Parts catalogue

Crankcase halves
Air intake - oil breather

Important
Bold reference numbers in this section identify parts not shown in the figures alongside the text, but which can be found in the exploded view diagram.
Removal of the airbox

Operation | Section reference
Remove the fuel tank | L 2, Removal of the fuel tank
Remove the battery | P 2, Battery support
Remove the ECU connector | M 3, Removal of the electronic control unit
Connect the starter motor/contactor cable | P 3, Removal of the starter motor

Loosen the hose clamps (1) and disconnect the oil breather hose (2).
Release the drain hose (12) from the cover (V) on the alternator-side crankcase cover (Sect. N 8, Removal of the alternator-side crankcase cover).
Disconnect the HT leads (A) of the horizontal cylinder head coil (B) and vertical cylinder head coil (C) from the respective spark plugs.
Disconnect the coil wiring connectors (D) from the main wiring harness (Sect. P 1, Routing of wiring on frame).
Loosen the clamps (E) of the hoses (F).
Undo the screws (16), recover the spacers (17) and withdraw the air filter vertically upwards, taking care to recover the rubbers (19).
Disassembly of the airbox
Loosen the hose clamps (11) and (1) and remove the drain hose (12) and the oil breather hose (2) from the airbox.
Remove the following electrical components

A | ECU (Sect. M 3, Electronic Control Unit (ECU));

B | Starter contactor (Sect. P 3, Starter contactor)

C | Battery support (Sect. P 2, Battery support)

D | Coils (Sect. M 3, Coil)

Notes
To remove the air filter, proceed as described in Sect. D 4, Changing and cleaning the air filters.
Reassembly of the airbox
Refitting is the reverse of removal. Route the wiring as indicated in Sect. P 1, Routing of wiring on frame.
Removal of the oil breather valve
Undo the screw (13) and remove the oil breather valve (14) from the crankcase half.
Check the condition of O-rings (15) and renew them if necessary.
Refitting the oil breather valve
Lubricate the two O-rings (15) with engine oil.
Insert the oil breather valve (14) in the hole in the clutch-side crankcase half, aligning the valve hole (G) with the threaded hole (H) in the crankcase half and inserting the screw (13).
Tighten the screw (13) to the specified torque (Sect. C 3, Frame tightening torques).
Refitting the airbox
Check that the rubber bushes (19) are present on the airbox.
Check that clamps (E) are correctly positioned on intake manifolds (F), with the fixing screws positioned as shown in the figure.
Locate the airbox assembly on the throttle body.
Fit screws (16) with the spacers (17) to the airbox and tighten to the specified torque (Sect. C 3, Frame torque settings).
Tighten the hose clamps (E) on the hoses (G) to the specified torque (Sect. C 3, Frame torque settings).
Reconnect the HT leads (A) of the horizontal cylinder head coil (B) and vertical cylinder head coil (C) to the respective spark plugs.
Connect the coil wiring connectors (D) to the main wiring harness (Sect. P 1, Routing of wiring on frame).
Refit the oil breather hose (2) with the clamp (1) on the breather valve and tighten the clamp (1) to the specified torque (Sect. C 3, Frame torque settings).
Secure the drain hose (12) with ties to the frame and under the cover (V) on the alternator–side crankcase cover (Sect. N 8, Refitting the alternator-side crankcase cover).

Operation | Section reference
Refit the battery | P 2, Refitting the battery
Connect the starter motor/contactor cable | P 3, Refitting the starter motor
Connect the ECU connector | M 3, Refitting the electronic control unit
Refit the fuel tank | L 2, Refitting the fuel tank

Positioning of the blow-by hose
Positioning of the airbox drain hose