97
POWERHEAD
CYLINDER/CRANKCASE/PISTON
6
IMPORTANT:
When installing the spacer, do
not allow the ends to overlap in the groove.
First Ring and Second Ring
Apply engine oil to the piston rings.
Install the second ring and the first ring to the pis-
ton with the “R” mark toward the piston head side.
IMPORTANT:
The first ring differs from the sec-
ond ring in shape. Distinguish the first ring from
the second ring by referring to the figure.
Ring Gap Direction
Position the piston rings so the ring gaps are stag-
gered at approximately 90 degree angles.
IMPORTANT:
Failure to stagger the piston ring
gaps may result in the crankcase oil dilution.
Crankshaft and Piston to Cylinder
Apply engine oil to the crankshaft journals, crank
pin, and bearing.
Apply
Triple-Guard
grease to the lip of the upper
oil seal.
Install the crankshaft to the cylinder block.
Apply engine oil to the piston and cylinder wall.
006108
1.
First ring
2.
Second ring
3.
Oil ring
006109
006110
incorrect
correct
Mark
1
2
“R”
3
1st ring
2nd ring
1st ring
2nd ring
1.
First ring
2.
Second ring
3.
Oil ring lower side rail
4.
Oil ring upper side rail
006111
1.
Crankshaft
006115
Mark
1
