If the cams are worn down past the service limit, replace the camshaft.
Cam Height Standard:
Exhaust 35.043 
35.157 mm
(1.3796 
1.3841 in.)
Intake 38.243 
38.357 mm
(1.5056 
1.5101 in.)
Service Limit:
Exhaust 34.94 mm (1.376 in.)
Intake 38.14 mm (1.502 in.)
Camshaft Runout Inspection
Camshaft Chain RemovalCrankshaft Sensor Peak Voltage Inspection
NOTE
Be sure the battery is fully charged.
Using the peak voltage adapter [A] is more reliable way
to determine the condition of the crankshaft sensor than
crankshaft sensor internal resistance measurements.
Disconnect the crankshaft sensor lead connector (see
Crankshaft Sensor ...
Throttle Body Assy Installation
Apply a thin coat of grease to the throttle cable lower ends.
Fit the accelerator cable end [A] and the decelerator cable
end [B] into the throttle pulley.
Install the clamp [C] securely.
Install the throttle body assy holder clamp bolt heads [A]
outside as shown in the figure.
...
Rear Sprocket Warp Inspection
Raise the rear wheel off the ground with the stand so that
it will turn freely.
Set a dial gauge [A] against the rear sprocket [B] near the
teeth as shown in the figure, and rotate [C] the rear wheel
to measure the sprocket runout (warp). The difference
between the highest and lowest di ...