Air Switching Valve Removal/Installation
Air Switching Valve Inspection
If the air switching valve [A] is normal, check the wiring for continuity (see Air Switching Valve Circuit).
Special Tool - Hand Tester: 57001-1394
If the wiring is good, check the ECU for its ground and power supply (see ECU Power Supply Inspection in the Fuel System (DFI) chapter).
If the ground and power supply are good, replace the ECU (see ECU Removal/Installation in the Fuel System (DFI) chapter).

Air Switching Valve Circuit

1. ECU
2. Air Switching Valve
3. Ignition Switch
4. Joint Connector F
5. Joint Connector A
6. Fuse Box 1
7. Ignition Fuse 15 A
8. Relay Box
9. ECU Main Relay
10. Frame Ground 1
11. Frame Ground 3
12. Starter Relay
13. ECU Fuse 15 A
14. Main Fuse 30 A
15. Battery
16. Engine Ground
Exhaust Butterfly Valve Actuator Resistance InspectionSystem Components
1. FI ECU
The FI ECU analyzes the motorcycle conditions based
on the signals from the front/rear wheel rotation sensors
and FI sensors (such as the crankshaft sensor and main
throttle sensor), and controls engine power by reducing the
number of ignition and retarding the ignition timing. The
m ...
Wear Inspection
Remove the left front footpeg bracket
bolts.
A. Front Footpeg Bracket
B. Bolts
Remove the bolts and chain cover.
A. Bolts
B. Chain Cover
Stretch the chain taut either by using
the chain adjusters, or by hanging a
10 kg (22 lb) weight on the chain.
Measure the lengt ...
Oil Pump Drive Gear Shaft Installation
Apply molybdenum disulfide grease [A] to the oil pump
drive gear shaft.
Apply molybdenum disulfide oil solution to the followings.
Transmission Case [B]
Crankcase [C]
Install the oil pump drive gear shaft and washer [D] as
shown in the figure.
Install the new circlip [E] into the ...