Husqvarna F2303R0, Repair Manual

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Check timing chain
0
for damage and wear.
If there is damage or wear:
Replace the timing chain.
ENGINE 17
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Check the timing chain links for smooth operation. Let the timing chain hang down freely.
The chain links no longer align in a straight line:
Replace the timing chain.
17 .4.26 Removing the rocker arm
310097-10
17 .4.27 Removing the valves
Remove screws
O
and
8
of the rocker arm shafts.
Remove screw plugs @) with the O-rings.
Screw in appropriate screw
C,
into the rocker arm shafts.
Pull out rocker arm shafts
0.
Guideline I
Screw
Take off the rocker arm (D.
...
...
Take the shims out of the valve spring retainers and lay them
to one side according to their normal built-in position.
Pretension the valve springs using the special tool.
Valve spring mounter (59029019000) ( 8 p. 308)
Insert for valve spring lever (77029041200) ( 8 p. 312)
Remove valve keys
O
and relax the valve springs.
Remove valve spring retainer
8
and the valve spring.
Pull the valve out of the valve guide from below and remove
valve stem seal@) and valve spring seat
C,.
205