Page 93 - 2019 SHOP MANUAL CRF1000/A/D

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MAINTENANCE
Measure the shim [1] thickness and record it.
[1]

• Fifty-one different shim thicknesses are available in
increments of 0.025 mm (from 1.200 mm to 2.450
mm).

Calculate the new shim thickness using the equation
below.
A = (B – C) + D
A: New shim thickness
B: Recorded valve clearance
C: Specified valve clearance
D: Old shim thickness

• Make sure of the correct shim thickness by
measuring the shim with the micrometer.
• Reface the valve seat if carbon deposits result in a
calculated dimension of over 2.450 mm.
Install newly selected shims on the valve retainers.
Install the valve lifter and camshaft (page 10-11).
Rotating the crankshaft counterclockwise several times
and recheck the valve clearances.

ENGINE OIL

OIL LEVEL INSPECTION
Place the motorcycle on its sidestand.
Start the engine and let it idle for 3 – 5 minutes. [1]/[5] [3]/[5]
Stop the engine and wait 2 – 3 minutes.
Remove the dipstick [1] and wipe it clean.
Place the motorcycle on a level surface, and support it
in an upright position. [4]
Insert the dipstick until it seats, but do not screw it in.
Check that the oil level is between the upper and lower
level lines on the dipstick.
[2]
If the level is below the lower level line [2], remove the
oil filler cap [3] and fill the crankcase with the
recommended oil up to the upper level line [4] (page 3-
12).
RECOMMENDED ENGINE OIL:
Honda "4-stroke motorcycle oil" or an equivalent
motor oil.
API service classification: SG or higher
JASO T903 standard: MA
Viscosity: SAE 10W-30
Check that the O-rings [5] of the oil filler cap and
dipstick are in good condition, replace them if
necessary.
Apply engine oil to the O-rings.
Install the oil filler cap and dipstick.

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