Carburatlon
Lu
b
ri
cation
Cooling
Ignition
14
2 Oell'Orto carburetors type VHB
29
CD
(right) and V
HB
29
CS
{lehJ. both gravi
ty
fed from the tank.
Standard carburetor
se
tting
_
Choke
29
mm
.
_
Thr
ott
le slide 60
- Atomi
zer
265
- Main jet
145
- Pilot j
et
45
-
Star
ter
atomizer:
BO
With needle
SV5
sec
ond notch from top:
Idling
sc
r
ew
open
11
k to 2 turns f
or
the
left
ca
rbur
etor
and 2 . 2
1J
2 turns for the
right carburetor.
Air
Intake provided with dry filter.
Pressure.
by
gear
pump driven
by
the crank
sha
ft
.
011
strainer
In cr
an
kc
ase
.
Normal lubrication
pressure
3.B
. 4.2 kgs/
sq
.
em
. (54 to
60
Ibs sq.
In.)
controlled
by
relief·
valve.
El
ec
trica
ll
y controlled all
pressure
gauge.
By
air Cylinder and cylinder head deeply
finned.
By
battery with automat
ic
advance distri·
butor.
In
itial advance: S·.
Automatic advan
ce:
28
·.
Ig
nition timing
33"
fu
ll
advance.
Cont
act
breaker gap: 0.
42
..{).48
mm. (.016" •
. 018").
Sparic:
plug: n. 225
In
Bosch·Marelli
scale
or
equivalent (long thread 0
14x
1,
25)
.
Pl
ugs point gap: 0.6 mm. (0.23··) .
Ignition coil.
Starting
bhau
sl
system
TRANS
MISSI
ON
Clutch
Gear box
Secondary
drive
FRAME
Suspension
Electric
sta
rt
er
with electromagnetic ratchet
control.
Ri
ng
gear
bol ted on flywh
ee
l. Operated
by
starter
bUllon on the right handlebar.
Du
al
exhaust pipes and mull
Ie
,s
T
win
driven plates, dry type. flywheel driven.
ContrOlled
by
lever on the left handlebar.
Five
speeds.
frontal engagement.
Heli
cal
constant mesh
gea
rs. Cush drive incorpo-
rated. .
Separate
case
bolted on crankcase.
opera
ted
by
rocker pedal Ir
om
the R/ H
or
L/ H side
of the machine.
Engine gear-box ratios:
Internal
gear
ratios:
- low
gear
-
second
gear
- third
gear
- fourth
gear
- high
gear
to
1.235
(17·2
1)
10
2
to 1.388
to
1.047
to 0.
869
to 0.750
( 1
4-28
)
(18·25)
(-2
1-
22)
(23-20
)
(24
·18)
By
constant
speed
double joint cardan s haft.
Layshaft
. bevel
gear
ra
ti
o:
1 to 4
.625
(8-37)
Overall
gear
ratios:
-
Ja
w
ge
ar
-
second
gear
- third
gear
- fourth
gear
- high
gear
Duplex cradle. tubular
st
ru
cture .
to
11
.
424
to 7
.929
to 5.980
to 4.
964
to 4.
284
Te
lescopic front fork
in
co
rporatin9 hydraulic
dampers.
Rear swinging fork
wi
th externally adjustable
springs.
IS
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