Mounting The Cylinder Head - KTM 450 SX-F Repair Manual

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– Lightly grease the outside surface of the cylinder.
– Attach a cable tie to the timing chain and pull it through the timing
chain compartment.
– Mount the pre-assembled cylinder/piston unit and align the conrod
with the piston.
– Gently slide in the oiled piston bolt.
– Insert the lock ring
773.29.030.000 or 776.29.030.000.
1
NOTE:
– Do not damage the tensioning rail and guide rail when you mount
the cylinder.
– Cover the crankcase when you insert the lock rings.
– The open side of the lock ring should point towards the crankcase.
– Slide the cylinder onto the engine case.

Mounting the cylinder head

– Insert the rollers
– Mount a new cylinder head gasket.
– Pull the timing chain through the timing chain compartment with
the cable tie and mount the pre-assembled cylinder head without
damaging the tensioning rail and guide rail.
– Screw on the cylinder head with oiled washers and nuts
– Screw on the oiled washer and nut
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with the mounting tool for the piston bolt lock
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.
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1 st step in a crosswise direction: 10 Nm
2 nd step in a crosswise direction: 30 Nm
3 rd step in a crosswise direction: 50° rotational angle
:
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and tighten to 10 Nm.
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