Check the engine oil level as follows:

The engine oil level should be between "L" (Low) and "f" (full) lines.
|
Caution The engine oil level must be between the " l'' (low) line and "f" (full) ~i ne, or engine damage may occur. Check the oil level, through the inspection window, with the motorcycle held vertically on level ground before each use of the motorcycle. |
Engine oil
Engine oil and filter changeClutch cable play inspection and adjustment
Inspect clutch cable play
every 6 000 km (4 000 miles, 12 months)
Inspect and adjust the clutch cable play “a” as follows.
Clutch cable play “a”
10 – 15 mm (0.4 – 0.6 In)
Lift and support the fuel tank. Refer to “fuel tank
removal and installation” in section 1g (page 1g-
9).
  ...
Front fork components
Front fork cap
O-ring
Rebound damping force adjuster rod
Compression damping force adjuster rod
Piston rod nut
O-ring
Piston ring
Rod guide case
Spring
Piston rod
Spring collar b
Spring
Spring collar a
Slide bushing
Outer tu ...
DTC “c40” (p0505 / p0506 / p0507): isc
valve circuit malfunction
Detected condition and possible cause
Detected condition
Possible cause
C40/P0505
The circuit voltage of motor drive is
unusual.
Isc valve circuit open or shorted to ground.
Air passage clogged.
Isc valve is fixed.
Isc valve prese ...