The four cylinders of this engine are identified as #1, 2, 3 and #4 cylinder, as counted from left to right (as viewed by the rider on the seat).

Break-in procedures
Country and area codesVehicle identification number
The frame serial number or V.I.N. (Vehicle identification
number) “a” is stamped on the right side of the steering
head tube. The engine serial number “b” is located on
the lower crankcase. These numbers are required
especially for registering the machine and ordering
spare parts.
...
DTC “c49” (p1656): pair control solenoid
valve circuit malfunction
Detected condition and possible cause
Detected condition
Possible cause
Pair control solenoid valve voltage is not input to ecm
Pair control solenoid valve circuit open or short.
Pair control solenoid valve malfunction.
Ecm malfunction.
...
Rear combination light removal and installation
Removal
Remove the frame cover assembly. Refer to “exterior parts removal and
installation” in section 9d .
Remove the clamps (1).
Disconnect the combination light coupler (2).
Remove the rear combination light assembly (3).
Remove the combination light brack ...