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96 Servicing Your Honda
Piston/Piston Rings/Piston Pin
1. Place a clean shop towel (1) in the crankcase to
keep the piston pin clips, or other parts, from
falling into the crankcase.
2. Remove the piston pin clips (2) using a pair of
needle-nose pliers.
3. Press the piston pin (3) out of the piston (4),
and remove the piston.
(CRF250R)
Under racing conditions, the piston, rings and
piston pin should be replaced every 6 races or
about every 15.0 hours of running.
(CRF250RX)
Under racing conditions, the piston, rings and
piston pin should be replaced every 4 races or
about every 15.0 hours of running.
NOTICE
Be careful not to damage or give a shock to the
piston pin.
Do not clean the piston pin using a commercially
available compound cleaner.
Spread each piston ring (1) and remove by lifting it
up at a point just opposite the gap.
NOTICE
Do not damage the piston ring by spreading the
ends too far.
We recommend you consult an official Honda
Service Manual or your dealer for correct Service
Limit measurements.
Piston Removal
(1) shop towel (3) piston pin
(2) piston pin clips (4) piston
(3)
(1)
(4)
(2)
Piston Ring Removal
(1) piston ring
(1)
Piston/Piston Pin/Piston Ring Inspection
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