Cylinder Head Cover And Cylinder Head 1; Construction; Disassembling - Honda C200 1963 Shop Manual

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3-2 CYLINDER HEAD COVER AND CYLINDER HEAD
A.
Construction
The cast iron cyl inder head cover has rocker arms installed which transmit the motion
from the push rods to the valves.
Lubricating oil passing through the cylinder and cylinder head jets from a nozzle in the
cylinder head cover, lubricates rocker arms and valves and returns to the crankcase through
an oil passage from the cylinder head.
The cylinder head has a dome-shaped combustio n chamb er which is excellent for provid-
ing good combustion. The valves are fitted directly through the cylinder head and there are
no valve !;Uides. The disp:acement of the combustion chamber is 16.7
±
0.2
cc when the
valves are c:osed and a spark p:ug fitted . Along w ith the cylinder, the cylinder hea::l and
cylinder head cover are mounted on the crankcase at a
10 °
upward angle.
B. Disassembling
1 . Remove 8 mm nut and cap nut a:1d take off cy!i.1der head cover.
2 . Pull out inlet and exhuast push rods.
3. Remove cyli:1der head.
CAUTION
When remov ing head, be careful not to damage cylinder gasket and 0-ring.
C.
Assembl:ng
1. Place cylinder gasket and 0-ring in positio:1 on cylinder and mount cylinder head, tak-
ing care not to damage !;asket.
2 . Insert inlet and exhaust push rods. Be sure they are in the right positio:1 : the inlet
push rod is longer than the exhuast push rod.
3 . Mount cylinder head cover, making sure there are no leaks, and tighten the nuts in the
sequence shown in Fig. 3·1 0.
CAUTION
Be sure the steel balls at the end of the push rods fit the rocker arms properly before
tightening the nuts.
4. Adjust tappet clearance IRefer to 3- 9 A l.