Use the micrometer to measure at several points around the ring.
Piston Ring Thickness Standard:
Top [A] 0.77 
0.79 mm (0.0303
0.0311 in.)
Second [B] 0.78 
0.79 mm
(0.0307 
0.0311 in.)
Service Limit:
Top 0.70 mm (0.0276 in.)
Second 0.71 mm (0.0280 in.)
If any of the measurements is less than the service limit on either of the rings, replace all the rings.
NOTE
When using new rings in a used piston, check for uneven groove wear. The rings should fit perfectly parallel to the groove sides. If not, replace the piston.
Piston Ring Groove Width Inspection
Piston Ring End Gap InspectionValve Guide Removal
Remove:
Valve (see Valve Removal)
Oil Seal
Spring Seat
Heat the area around the valve guide to 120
150°C (248
302°F), and hammer lightly on
the valve guide arbor [A]
to remove the guide from the top of the head.
NOTICE
Do not heat the cylinder head with a torch. This ...
Fuel Pump Installation
Remove dirt or dust from the fuel pump [A] by lightly applying
compressed air.
Replace the fuel pump gasket with a new one.
Check that the fuel pump terminal [A] and band [B] are in
place.
Apply a non-permanent locking agent to the threads of
the fuel pump bolts.
Tighten the ...
Jump starting
If your motorcycle battery is “run
down”, it should be removed and
charged. If this is not practical, a 12
volt booster battery and jumper cables
may be used to start the engine.
DANGER
Battery acid generates hydrogen
gas which is flammable and
explosive under certain conditions.
It i ...