KTM 690 LC4 2007, Repair Manual

Page: 46 / 95

5-13
– If you remove the valves, always replace the valve stem gaskets.
– Measure the thickness of the valve spring retainers. Minimum
thickness: 2.4 mm.
– Position the valve spring retainers in the cylinder head.
– Mount the valve stem gaskets on the valve guides and lubricate.
– Generously lubricate the valves on the stem and insert in the valve
guides.
NOTE: make sure you mount the valves in the right position.
– Position the valve springs, place the valve spring retainers in the
valve springs.
NOTE: the end of the valve spring with the larger diameter must be
mounted facing down.
– Preload the valve springs with the special tool and mount the valve
keys.
NOTE: make sure the valve keys are in the right position when
mounted. Attach the valve keys to the valve with a little grease.
– Finally, tap the valve spring retainers a few times with a plastic
hammer.
– Mount the shims in their original position.
– Position the rocker arms and slide in the rocker arm shafts.
NOTE: the threaded holes must be on the chain tunnel side.
! CAUTION !
W
HEN YOU MOUNT THE ROCKER ARM SHAFTS
,
MAKE SURE THE SMALL HOLES
1
FACE UP
.
– Mount the M6x40 screws
2
on the rocker arm shafts, mount the
M6x30 screws
3
and tighten to 12 Nm.
1
2
3
3