KTM 2008 690 SMC EU - Installing Valves

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– Check the sealing area of the cylinder for distortion using a straight edge and the
special tool.
Feeler gauge (59029041100) ( p. 210)
Cylinder/cylinder head - sealing area
distortion
≤ 0.10 mm (≤ 0.0039 in)
» If the measured value does not equal the specified value:
– Change the cylinder head.
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– Check sealing seat  of the valves.
Valve - sealing seat width
Intake 1.60 mm (0.063 in)
Valve - sealing seat width
Exhaust 2.00 mm (0.0787 in)
» If the measured value does not equal the specified value:
– Machine the valve seat.
– Blow compressed air through all oil holes and check that they are clear.
18.27Installing valves
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– Position the valve spring cap . Install new valve stem seals .
– Install the valves  according to their normal built-in position.
– Install the valve springs  and the spring retainers.
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– Pretension the valve springs using the special tool.
Valve spring compressor (59029019000) ( p. 209)
Valve spring mounting device (78029060000) ( p. 216)
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– Mount valve keys.
Info
When mounting the valve keys, check that they are seated correctly; prefer-
ably, fix the valve keys to the valve with a little grease.
– Place shims  into the valve spring retainers according to the installation position.