Cylinder Head Top Section - HUSABERG FE 450 Repair Manual

SERVICING THE INDIVIDUAL PARTS
2

CYLINDER HEAD TOP SECTION

– Remove the circlip (1) and the decompression shaft (2)
out of the bore together with the spring (3).
– Pull the 2 end pieces (4) out of the cylinder head top
section together with the rocker arm shafts (5) + (6).
Remove the rocker arms (7).
– Clean all parts and check for wear.
– Check the rocker arm shafts (5) + (6) for score marks
and smooth operation in the rocker arms (7).
– Check the rocker arm rollers (8) for smooth operation,
replace the rocker arm roller if there is any radial
clearance.
– The seating surfaces of the adjusting screws (9) must fit
flush.
– Check the decompression shaft (2) for smooth
operation and clearance in the bearing bore. Replace
the O-ring (11).
– Replace the O-rings (10).
– Thoroughly oil all parts before reassembling.
– Position the rocker arms in the cylinder head top
section and mount the rocker arm shafts.
NOTE: mount the shorter rocker arm shaft (6) in
the rear.
– Mount the end pieces (4) and turn so that you can
mount the bolts for the cylinder head top section.
– Mount the decompression shaft (2) and pretension the
spring.
10
10
4
5
11
3
1
4
6
7
7
8
9
D
11
9