100
CM157A
CM155A
27. Install the dowel pins into the crankcase; then place
the cylinder base gasket into position on the crank-
case.
28. Install the piston rings on each piston so the letter on
the top (inclined surface) of each ring faces the dome
of the piston.
726-306A
29. Apply oil to the connecting-rod small end bearings;
then install the small-end bearings. Install a washer
on each side of the connecting rod.
TZ068
NOTE: The shoulder side of the washer must seat to
the needle bearing.
CM172A
30. Place each piston over the connecting rod so the indi-
cator dot on each piston will point toward the
intake/exhaust ports; then secure with an oiled piston
pin.
NOTE: The indicator dot is found on the piston
dome.
XM019A
31. Install the new circlips so the open end is directed
either up or down.
32. Rotate each piston ring until the ring ends are prop-
erly positioned on either side of the ring keeper; then
apply oil to the piston assemblies and cylinder bores.
CAUTION
Incorrect installation of the piston rings will result in
engine damage.
CAUTION
Make sure the circlips are firmly seated before continu-
ing with assembly.
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