Crankcase Assembly - Honda 2003 NPS50 Ruckus Service Manual

Apply engine ail to the connecting rod big end bear­
ing (3 cm3), crankshaft main journal bearings (2 cm3
each), cylinder wall, piston and piston ring outer
surface.
Install the piston with the " I N " mark facing the intake
side while compressing the piston rings with your
fingers.
Align the crankshaft bearing g rooves with the set
rings.
NOTICE
While installing the piston, being careful not to
damage the top surface of the cylinder, especially
around the cylinder bore.

CRANKCASE ASSEMBLY

Apply oil to a new crankshaft oil seal lip and outer
surface.
Install the crankshaft oil seal until it is flush with the
crankcase surface.
Install the dowel pins into the front crankcase.
Apply sealant to the rear crankcase mating surface
as shown.
Install the rear crankcase aver the front crankcase.
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