If the guide pin on any shift fork is less than the service limit, the fork must be replaced.
Shift Fork Guide Pin Diameter
Standard: 6.9
7.0 mm (0.272
0.276 in.)
Service Limit: 6.8 mm (0.268 in.)

If any shift drum groove is worn over the service limit, the drum must be replaced.
Shift Drum Groove Width
Standard: 7.05
7.20 mm (0.278
0.283 in.)
Service Limit: 7.3 mm (0.287 in.)
Shift Fork/Gear Groove Wear Inspection
Gear Dog and Gear Dog Hole
Damage InspectionValve Installation
NOTICE
Do not lap the valve to the valve seat, using the
grinding compound. It will come off oxide film
treated surface of the valve.
Replace the oil seal with a new one.
Apply a thin coat of molybdenum disulfide grease to the
valve stem before valve installation.
Install the springs so ...
Oil Level Inspection
If the oil has just been changed, start
the engine and run it for severalminutes
at idle speed. This fills the oil
filter with oil. Stop the engine, then
wait several minutes until the oil settles.
NOTICE
Racing the engine before the oil
reaches every part can cause engine
seizure.
...
Clutch Installation
Apply engine oil to the needle bearing [A] and the sleeve
[B].
Install:
Needle Bearing
Sleeve
Install the clutch housing [A].
Fit the holes [B] and projections [C].
Engage the clutch housing gear and the crankshaft primary
gear.
Install the spacer [A] and the clutch ...