Honda SH300 2006 Manual page 245

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Spread each piston ring and remove it by lifting up

Do not damage the

at a point opposite the gap.

piston ring by

spreading the ends

Clean carbon deposits from the ring grooves with a

Never use a wire

ring that will be discarded.

brush, it will scratch

CYLINDER/PISTON INSPECTION

Inspect the cylinder wall for scratches or wear.

Measure the cylinder I.D. at three levels in the X and

Y axis. Take the maximum reading to determine the

cylinder wear.

SERVICE LIMITS: 72.045 mm (2.8364 in)

Calculate the taper and out-of-round at three levels

in the X and Y axes. Take the maximum reading to

determine both measurements.

SERVICE LIMITS:

Out-of-round: 0.05 mm (0.002 in)

The cylinder must be rebored and an oversize pis-

ton/piston rings fitted if the service limits are

The following oversize pistons/piston rings are

0.25 mm (0.010 in)

0.50 mm (0.020 in)

The piston-to-cylinder clearance for the oversize pis-

ton must be 0.010 – 0.040 mm (0.0004 – 0.0016 in).

0.05 mm (0.002 in)

CYLINDER/PISTON

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