Honda CB160 Shop Manual page 21

3. 2 CYLINDER HEAD AND CYLINDER
U. Assembly
1.
When the adjusting screw of the rocker arm is
turned back fully, set it to the rocker arm pin and
assemble it in reverse order of disassembly.
2. The stanard tappet clearance is 0.03 to 0.05 mm
(0.012 to 0.020 in) when the engine is cold.
{CAUTION)
Correct or replace the unit when the cam is
scored or worn unevenly.
D.
Description of rocker arm
The rocker arm is an important unit which changes
the rotating motion of the camshaft to reciprocating
,motion for the valve.
The rocker arm contact surface is finish treated
-after hardening. The tappet adjusting screw is coupled
at the other end and pushes up the valve at the tip
of the screw.
J. Dissassembly
1.
Refer to section C above. When the right and
left covers are removed, removal can be made.
(Refer to Fig. 3. 30)
11. Assembly
1.
Inspect the rocker arm contact surface and replace
the unit if there is scoring.
2.
When the rocker arm shaft is being assembled,
the rocker arm should be matched to the oil pool
groove. (Refer to Fig. 3. 31)
.3. When the rocker arm has been disassembled and
reassembled the tappet clearance (valve clearance)
should be measured and adjusted. Adjustment
should be performed at the position where the T
mark of the
A.C.
generator rotor and the ar_row
mark of the stator are matched. (Compression top
dead center]. (Refer to Fig. 3. 32)
ROCKER ARM SHAFT
Fig. 3. 29 Valve racker arm
Fig. 3. 30 Removing valve rocker arm
Fig. 3. 31 Rocker arm shaft
Fig. 3, 32 Adjustment of tappet clearance
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