Cylinder Head - KTM 250 SX-F 2005 Repair Manual

5-15

Cylinder head

– Loosen the screws and remove the exhaust flange together with the
gasket.
– Remove the shims from the valve spring retainers (if still mounted).
– Dismount the valve keys using the special tools 590.29.019.000
and 770.29.041.000 and relieve the valve springs.
NOTE: Used valves must be remounted in the same valve guide as
before. We suggest that you place the valves in a carton in the position
they were previously mounted in the cylinder head (see illustration).