Service Manual

5-18 ENGINE TOP END
Cylinder, Piston
•
Apply engine oil to the piston pins.
•
Assemble the pistons onto the connecting rods as follow.
○
No.1 Cylinder Piston; align the arrow mark on the piston
head with opposite “K” Mark on the connecting rod to face
the flywheel side.
○
No.2 Cylinder Piston; align the arrow mark on the piston
crown with the “K” mark on the connecting rod.
○
Both marks must face the flywheel side.
No.1 cylinder Piston [A]
No.2 cylinder Piston [B]
Arrow Marks [C]
“K” Mark [D]
Opposite “K” Mark [E]
•
Fit a new piston pin snap ring into the side of the piston so
that the ring opening [A] does not coincide with the notch
[B] in the edge of the piston pin hole.
○
When installing a piston pin snap ring, compress it only
enough to install it and no more.
CAUTION
Do not reuse the snap rings, as removal weakens
and deforms them. They could fall out and score
the cylinder wall.
•
Apply engine oil to the piston skirt and the cylinder bore.
•
Using the piston ring compressor grip [A] and the belt [B],
lightly tap the top of the piston with a plastic mallet [C] to
insert the piston and connecting rod into the cylinder.
Special Tools - Piston Ring Compressor Grip: 57001-1095
Piston Ring Compressor Belt,
67 ∼
79:
57001-1097
•
Insert the piston and connecting rod so that the arrow
mark [A] on the top of the piston is facing the flywheel
side.