Honda Activa SCV110, Service Manual Digest

Page: 105 / 230

8-3
CYLINDER/PISTON
Check the top of the cylinder for warpage with a straight
edge and feeler gauge.
SERVICE LIMIT: 0.05 mm (0.002 in)
PISTON REMOVAL
Place a clean shop towel over the crankcase to prevent
the clip from falling into the crankcase.
Remove the piston pin clips with the pliers.
Push the piston pin out of the piston and connecting rod,
and remove the piston.
Spread each piston ring and remove it by lifting up at a
point opposite the gap.
Clean carbon deposits from the piston.
INSPECTION
Inspect the piston rings and replace them if they are
damaged.
Inspect the piston rings for movement by rotating the rings.
The rings should be able to move in their grooves without
catching.
Push the ring until the outer surface of the piston ring is
nearly flush with the piston and measure the ring-to-ring
groove clearance.
SERVICE LIMITS: Top: 0.08 mm (0.003 in)
Second: 0.08 mm (0.003 in)
PISTON RING
PISTON PIN CLIP
PISTON PIN
• Do not damage the piston ring by spreading the ends
too far.
• Be careful not to damage the piston when the
piston rings are being removed.
• Clean carbon deposits from the ring grooves with a
old piston ring. Never use a wire brush; it will scratch
the groove.