Spread the rail with your thumbs, but only enough to fit the rail over the piston.
Release the rail into the bottom piston ring groove.
NOTE
The oil ring rails have no “top” or “bottom”.

NOTE
Do not mix up the top and second ring.

NOTE
If a new piston is used, use new piston rings.

When installing the piston pin snap ring, compress it only enough to install it and no more.
NOTICE
Do not reuse snap rings, as removal weakens and deforms them. They could fall out and score the cylinder wall.
40° of angle from the
Top Ring [A]
Second Ring [B]
Oil Ring Steel Rails [C]
Oil Ring Expander [D]
Hollow [E]
30
40° [F]

Special Tools - Piston Ring Compressor Grip: 57001-1095
Piston Ring Compressor Belt,
67
79:
57001-1097

Piston Removal
Cylinder (Upper Crankcase) Wear InspectionAir 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 ...
Master Cylinder Inspection (Visual Inspection)
Remove the master cylinders (see Front/Rear Master
Cylinder Removal).
Disassemble the front and rear master cylinders (see
Master Cylinder Rubber Parts Replacement in the Periodic
Maintenance chapter).
Check that there are no scratches, rust or pitting on the
inner wall [A] of each ma ...
Starter Clutch Inspection
Remove:
Torque Limiter Cover (see Torque limiter Removal)
Turn the torque limiter [A] by hand. The torque limiter
should turn forward freely [B], but should not turn backward.
If the starter clutch does not operate as it should or if it
makes noise, go to the next step.
Disassem ...