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 InspectionCylinder Head Warp Inspection
Clean the cylinder head.
Lay a straightedge across the lower surface of the cylinder
head at several positions.
Use a thickness gauge [A] to measure the space between
the straightedge [B] and the head.
Cylinder Head Warp
Standard: – – –
Service Limit: 0.05 mm (0.0020 in.)
...
Regulator/Rectifier Inspection
Remove:
Upper Fairing Assembly (see Upper Fairing Assembly
Removal in the Frame chapter)
Right Inner Fairing (see Inner Fairing Removal in the
Frame chapter)
Bolts [A]
Regulator/Rectifier [B]
Set the hand tester to the × 1 kΩ range and make the
measurements show ...
Air Switching Valve (Service Code 64)
Air Switching Valve Removal/Installation
Refer to the Air Switching Valve Removal/Installation in
the Engine Top End chapter.
Air Switching Valve Inspection
Refer to the Air Switching Valve Unit Test in the Electrical
System chapter.
If the air switching valve [A] is normal, check ...