Honda Z50A Shop Manual page 13

..
7 Loosen the cam chain guide roller
p111
and remove the cam chain guide roller
from lhe
cylinder ( Fig.
1 3).
8 U11screw tne cylinder mounung bolt
{ 1 each) and remove the cylinder
9 Disassemble the
valve
rocl..er
arm and
thd camshaft from the cvhnder head
1 0 Disassemble thevalvebv usmg the valve re-
moval tool (Tool No O 7 9 5 7-32 90000)
(Fig. 1 4 )
C.
Inspection
1 I
nspecung
the
cylinder heao
machined
gasi..etmg surface
Place a straight edge across the ma·
ch11"ed gaskeung surface
and
measure
the clearance between
the
stra1ghl edge
and the
mach1
,ed
surtace with
a
thick-
ness gauge
Ir
tha
clearance 1s
greater
than O 002 (0 05 mm). the cvfinder
head should be
reoaired or replaced
To parlor
m the repair place a
sheet
of
fine grn emery paper on the laop1ng or
surface place and rework the cylinder
head The cond111on
of
the machined
surface can be checked by usmg
pruss,ari
blue or red lead ( Fig. 1 6 \
1 1
1) ("am chain Q\Jlde roller
~
S mm
...,aoilng
Wil~hHI
Ill CRm chem gmdo roller pm
Fig. 13
(f Cyhnue1
head
a,
s11 a19ht
.,rJgu
Th1c~ness gougo
Fig
15
©
Cylinder head
~ Emory
Pilf11H
Flg . 16