Page 394 - 2019 SHOP MANUAL CRF1000/A/D

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CRANKSHAFT/PISTON/CYLINDER
PISTON/CYLINDER

PISTON/CONNECTING ROD
REMOVAL

• Before piston removal, place a clean shop towel
around the connecting rod to prevent damaging the
cylinder sleeve.
• Do not try to remove the piston/connecting rod
assembly from bottom of the cylinder; the assembly
will get stuck in the gap between the cylinder liner
and the upper crankcase.
• Do not interchange the bearing inserts. They must
be installed in their original locations or the correct
bearing oil clearance may not be obtained, resulting
in engine damage.
Remove the following:
– Transmission (page 14-15)
– Crankshaft (page 15-4)
Remove the piston/connecting rod assembly [1] from
the top of the cylinder.
[1]

PISTON REMOVAL
Remove the piston pin clips [1] with pliers.
Push the piston pin [2] out of the piston [3] and [3]
connecting rod [4], and remove the piston.

[1]

[4]

[2]
PISTON RING REMOVAL
Be careful not to Spread each piston ring ends and remove them by
damage the piston lifting up at a point opposite the gap.
ring by spreading Clean carbon deposits from the piston ring grooves with
the ends too far.
a ring that will be discarded.

• Never use a wire brush; it will scratch the groove.

15-12