Service Manual

ENGINE TOP END 5-17
Cylinder, Piston
•
Remove the top and second rings with piston ring pliers.
Special Tool - Piston Ring Pliers: 57001-115
•
If the special tool is not available, carefully spread the ring
opening with your thumbs, then push up to the opposite
side of the ring [A] to remove it.
•
Remove the 3-piece oil ring with your thumbs in the same
manner.
Piston Installation
•
Install the expander [A] in the piston oil ring groove so
that the expander ends [B] touch together, never overlap
them.
•
Install the upper and lower steel rails. There is no UP or
Down to the rails. They can be installed either way.
•
Do not mix up the top and second rings.
•
Install the second ring as follows.
Replacing with new one:
○
Install the second ring so that the white stripe [A] is on the
right side of the end gap.
Reassembling the ring in use:
○
Install the second ring so that the notched edge [B] faces
upward.
•
Install the top ring.
•
The rings should turn freely in the grooves.
Piston Head [C]
Top Ring [D]
Second Ring [E]
•
Align the piston and rings with the piston ring end gap as
shown in the figure.
Arrow Match Mark
s[A]
Top Ring End Gap, Upper Steel Rail End Gap [B]
45° [C]
Second Ring End
Gap, Lower Steel Rail End Gap [D]