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 codesCamshaft sprocket
Inspect the camshaft sprocket in the following
procedures:
remove the intake and exhaust camshafts. Refer to “engine top side
disassembly” .
Inspect the teeth of each camshaft sprocket for wear
or damage.
If they are worn or damaged, replace the sprocket/
camshaft assembl ...
Engine top side disassembly
It is unnecessary to remove the engine assembly from
the frame when servicing the cylinder head cover and
camshafts.
Note
before servicing the engine top side
components (until camshafts removal) with
the engine in place, remove the following
parts:
air cleaner box
...
Special tools and equipment
Recommended service material
Note
required service material is also described in the following.
“Exhaust system components”
Special tool
...