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I
U
Inspect
the
top of
the
cylinder
for
warpage.
SERVICE
LIMIT:
0.05 mm
(0.002
in
)
PISTON/PISTON RING INSPECTION
Never use a
wife Remove
the
carbon deposits
from
the pi ston head
brush.
It
will
scra tch
or
piston ring
grooves.
the grooves.
Inspect the
piston
for
damage
and the
ring grooves
for
wear.
Temporarily install the
top
piston
ring
to its proper
position with the mark facing
up.
Measure the piston
ring+
to·ring
groove clearance
with
the ring
pushed into the groove.
SERVICE
LIMIT:
0.115 mm 10.0045 in)
Inspect
the piston
ring grooves for wear or
damage.
Measure
the diameter of the piston at
5.0
mm
(0.20
in)
from the bottom and 90 degrees to
the
piston pin
hole.
SERVICE
LIMIT:
95 .94 mm (3.777 in
)
If the 0 .0
.
is
under
the service limit or nearly
15.0
hours of
ru nning time
have elapsed (competition
use only), replace
the piston
wi
th
a
new
one.
Calculate
the
cylinder-to-piston
clearance.
SERVICE
LIMIT:
0.085 mm (0.0033 in)
CYLINDER/PISTON
PISTON RING
5.0mm
(0.20
in)
10-7
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