Page 226 - 2019 SHOP MANUAL CRF1000/A/D

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CYLINDER HEAD/VALVE/CAMSHAFT
Remove the cam sprocket bolts [1] and disassemble
the camshaft [2] and cam sprocket [3]. [4] [2]

Attach a piece of Release the cam chain [4] from the cam sprocket.
wire to the cam Remove the camshaft.
chain to prevent it
from falling into the [3]
crankcase.

[1]

Remove the valve lifters [1] and shims [2].
[1]
• Do not allow the shims to fall into the crankcase.
• Mark all valve lifters and shims to ensure correct
reassembly in their original locations.
• The shims can be easily removed with a tweezers or
a magnet.

[2]
INSPECTION
Inspect the following parts for damage, abnormal wear,
deformation, burning, or clogs in oil passages.
– Cam sprocket
– Camshaft
– Camshaft holder/dowel pin
– Valve lifter
Measure each part according to CYLINDER HEAD/
VALVE/CAMSHAFT SPECIFICATIONS (page 1-7).
Replace any part if it is out of the service limit.

CAMSHAFT OIL CLEARANCE
Do not rotate the Wipe any oil from the journals of the cylinder head,
camshaft during camshaft and camshaft holder.
inspection. Install the camshaft onto the cylinder head (page 10-
11).
Lay a strip of plastigauge [1] lengthwise on each
camshaft journal and be sure to avoid the oil passages.

[1]

10-10