The engine is equipped with a pcv system to prevent discharging crankcase emissions into the atmosphere. Blow-by gas in the engine is constantly drawn into the crankcase, which is returned to the combustion chamber through the pcv (breather) hose, air cleaner and throttle body.

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Fuel injection system description
Exhaust emission control system
descriptionEngine stop switch inspection
Inspect the engine stop switch in the following
procedures:
turn the ignition switch off.
Remove the air cleaner box. Refer to “air cleaner box removal and
installation” in section 1d .
Disconnect the right handlebar switch coupler (1).
Inspect the engine stop ...
Water pump disassembly and assembly
Refer to “water pump removal and installation” .
Disassembly
Remove the air bleeder bolt (1) if necessary.
Remove the water pump case screws.
Remove the o-ring (2).
Hold the impeller (3) with water pump pliers and
remove the impeller securing bolt (4).
Remove t ...
Cam chain tensioner inspection
Inspect the cam chain tensioner in the following
procedures:
remove the cam chain tensioner. Refer to “cam chain guide / cam chain
tensioner removal and installation” .
Check the contacting surface of the cam chain
tensioner. If it is worn or damaged, replace it with a
new ...