Piston Ring Installation; Note - Honda 2000 XR50R Service Manual

CYLINDER/PISTON
Measure the connecting rod small end 1.0.
SERVICE
LIMIT: 13.08 mm (0.515 in)
Calculate the connecting rod-te-piston pin
clearance.
SERVICE LIMIT: 0.12 mm (0.005 in)
Push the rings Inlo
Insert the piston ring squarely into the bottom of
thacylinder with
the cylinder and measure the ring end gap.
the
top
of the
piston to
b8
sure
they BrB squarely
in lila cylinder.
8-6
SERVICE LIMITS:
Top:
Second:
0111,100
,ail):
0.5 mm (0.02 in)
0.5 mm (0.02 in)
1.1
mm (0.04 in)
PISTON RING INSTALLATION
Clean the piston ring grooves thoroughly and
install the piston rings.
NOTE:
• Apply oil to the piston rings.
• Avoid piston and piston ring damage during
installation.
• Install the piston rings with their marking facing
up.
• Do not confuse the top and second rings.
Space the piston ring end gaps 120 degrees apart.
Do not align the gaps in the oil rings (side rails).
After installation, the rings should rotate freely in
the ring grooves.
~--c/TOP
RING
~~-
SECOND RING