Cylinder - Honda TRX400EX FOURTRAX 1999 Service Manual

Spread each piston ring and remove
a point opposite the gap.
CAUTION:
Do not damage the piston ring by spreading the
ends too far.
Clean carbon deposits from the piston.
CAUTION
Clean carbon deposits
ring that wi// be discarded. Never use a wire brush; if
INSPECTION

CYLINDER

Inspect the cylinder bore for scratch or wear.
Measure the cylinder I.D. at three levels in an X and Y
axis.
Take the maximum reading to determine the cylinder
wear.
SERVICE LIMIT 85.10 mm 13.350 in)
Calculate the cylinder-to-piston clearance.
Refer to page 8-5 for measurement of the piston O.D.
SERVICE LIMIT
Calculate the cylinder taper and out-of-round at three
levels in an X and Y axis. Take the maximum reading
to determine the taper and out-of round.
SERVICE LIMITS Taper: 0.05 mm (0.020 in1
The cylinder must be rebored and an oversize piston
fitted if the service limits are exceeded.
The 0.25 mm (0.010 in) and 0.50 mm (0.020 in) over-
size pistons are available.
The cylinder must be rebored
for an oversize piston is 0.015
0.0020 in).
8-4
it by lifting up at
from
the ring grooves with a
mm (0.004 in1
0.10
Out-of-round: 0.05 mm 10.020 in)
that the clearance
so
-
0.050 mm (0.0006
PISTON
r
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