Honda ST50 Shop Manual page 18

16
Fla. I◄
F11. 15
Fla. 16
Flii:. 17
5. Loosen the- three cam sprocket mounting
bolts and remove 1hc cam sprocket from the
camshaft(Fig. 14).
6. Unscrew the four cylinder head hold-down
nutS and 6 mm hex bolt and separate the cy-
lindcr hcad from thc cylindcr.
7.
Loosen
the cam chain guide roller pin and
rcmO\C the cam chain guide roller from the
cylindcr(Fig. 15}.
8. Unscrew the cylinder mounlin& bolt (I each)
and remove the cylinder.
9. Disassemble the valve rocker arm and the
camshaftfromthecylindcrhcad.
Use 1hc 6 mm bolt for pullina the rocker arm
pin out.
10. Disassemble the valve with the valve remo-
val tool (fool No. 07957- 3290000) (Fig. 16).
Inspection
I.
Inspecting
the
cylinder head machined gasket
surface.
Place a straight edge across the machined
gasket surface and measure the clearance
between the straighk edge and
the
machined
surface with a thickness gauac.
ff
1hc clear•
ance exceeds 0.05 mm (0.002 in), the cyli nder
head should
be
repaired or replaced (Fig. 17).