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 InspectionFuel Injector Audible Inspection
NOTE
Be sure the battery is fully charged.
The secondary fuel injectors are operating with following
conditions.
1. The engine speed is more than 6 000 r/min (rpm).
2. The throttle opening is more than 12°.
Remove:
Fuel Tank (see Fuel Tank Removal)
Primary Fuel Hose (see Fuel ...
Passenger’s Seat Installation
Insert the tab on the rear of the passenger’s
seat into the slot in the
frame.
Insert the projections at the front of
the passenger’s seat into the holes
on the frame.
Push down the front part of the passenger’s
seat until the lock clicks.
A. Passenger’s Seat
B. Proj ...
Wheel Bearing Damage Inspection
Raise the front wheel off the ground with the jack (see
Front Wheel Removal in the Wheels/Tires chapter).
Special Tools - Jack: 57001-1238
Jack Attachment: 57001-1608
Turn the handlebar all the way to the right or left.
Inspect the roughness of the front wheel bearing by moving
[A] ...