Robin America DY30 Service Manual page 28

a
Assemble
the
cylinderhead.
10 mrn
flange
nut
. . . . . . . . . .
4
pcs.
Washer
. . . . . . . . . . . . . . . . .
4 pcs.
NOTE: Install the intake and exhaust valves. On the
intake side there i s a stem seal.
NOTE: Insert the push rod. (Exhaust is on the side
of the gear case.) Pay attention to the valve facing, UP-
ward or downward, and direction of intake and ex-
haust.
NOTE: Install the rocker arm to the cylinder.
It is advisable to insert the rocker shaft before clamp-
ing the head.
(See Fig.
47
.)
NOTE: Clamp the head to the cylinder.
Apply "Three Bond # I 21 5" to two pieces of the stud
bolt (on the side of the rocker shaft) and upper and
reverse surfaces of the washer, and then tighten the
nuts.
[Tightening torque: 350 kg-cm]
.
Tightening of the nuts is to be done in three rounds,
I.
e.:
1
s t round
. . . . . . . . . . . . . . .
100 kg-cm
2nd round
. . . . . . . . . . . . . . .
200
kg-crn
3rd round
. . . . . . . . . . . . . . .
330
-
350 kgcm
NOTE: Fasten tightly the plate (push rod sleeve).
6 mm nut
. . . . . . . . . . . . . . .
4 pcs.
(See
Fig. 48.)
15)
Adjust the
valve
clearance.
NOTE: Turn the flywheel by hand
to
the compres-
sion
a t
TDC (top dead center). At TDC the camshaft
cranking pin stands vertically.
NOTE: Adjust the valve clearance to anywhere be-
tween 0.07
-
0.10 mm (both intake and exhaust),
when the engine is cold.
(See Fig. 49.)
Fig. 47
I
DECOMPRESSiON
\,
ADJUSTING SCREW
Fig. 49
-
25
-