VESPA 152 Installation guide

~p. ~ppointmtnt
tiro~is !t.opa(~i!Wntss ~~t Dukt ofellillbllr!1~
;;lIppIitts ofVtspa 6toottts
~
152 L2 MODEL
OPERATION AND MAINTENANCE
.......

~!' S![ppointmtnt
11to~is l\o!,al ~i!Wntss 11t~t~ukt of <ebillbllrg~
~lIpp1itrs of 1Jtspa ~coottrs
~
152 L2 MODEL
OPERATION AND MAINTENANCE
_.. _ _:-0.__ -- -- -'- ---

INTRODUCTORYNOTE
In accordance with Douglas(Sales&Service)Ltd.policy of progressiveimprovement,the right is
reserved to alter any details of price, specification, accessories, and equiPment,
without notice, and without incurring any obligation.
BE ~-WISE
To keep your Vespa in perfect running order, it is advisable to entrust repairs only to
authorised Douglas Dealers. We point out that the use of parts other than original "Douglas"
Spares will invalidate your Guarantee.
Specialcare should be taken to ensure that the oil/petrol ratio isalways in strict accordance
with our recommendations.
SERVICE EXCHANGE
Ask your Dealer for full particulars relating to the Service Exchange Scheme. The use
of the facilities we offer through this medium ensures an economical. speedy. and reliable
means ofcarrying out repairs when such become necessary.
DOUGLAS (SALES & SERVICE) LTD., KINGSWOOD, BRISTOL.
Telephone [phone]
DIVISION OF THE WESTINGHOUSE BRAKE AND SIGNAL COMPANY LIMITED
2-

..-
_'W~ .""",,~.
~~-~:..~-
~~.~~ .\
f~.'.
\.
.
.
Fig. I. Vespa 125,
-----

Fig. 2. Vespa controls.
1. Gear change twistgrip with clutch control lever. 2. Front brake lever.
5. Front brake iaws. 6. Rear brake pedal. 7. Kickstarter. 8. Gear shifter.
air cleaner. 12. Choke control lever. 13. Fuel taD.
3. Throttle control grip. 4. Light and dip switch.
9. Rear brake jaws. 10. Clutch. IJ. Carburettor.

IDENTIFICATION DATA
Serial numbers with prefixes are stamped on
both engine and frame, in the position indi-
cated on Fig. 3.
Such numbers and prefixes identify the
Vespa as prescribed by law and are r.epeated
on the test card and other documents of the
scooter.
They must be quoted when ordering spares.
Fig. 3. Stamping on frame (I) and engine (2).
-s

TECHNICAL DATA
Fuel consumption at economic speed
Up to 120miles per imp. gal.
Max. speed
Carrying capacity
46.5 m.p.h.
2 persons
and 22 Ibs. of luggage
Up to 200 miles
Range
.ENGINE
Single horizontal cylinder, two-stroke, with
reverse flow scavenge and deflector piston.
Bore 54mm 2.126'
Stroke 54mm 2.126'
Displacement 123.67cc. 7.48cu. in.
Compression ratio . 6.3 to I
The engine is pivoted to the chassisof scooter
Wheel base
Handlebars width
Scooter length .
Max.height
Min. height of floorboard.
Min. turning circle
Weight (with fuel) .
46.4'
25.7"
68.3"
38.7"
8'
59'
1921bs.
through the cylindric arm of the crankcase
half, clutch side, provided with a spindle and
two bushes (see Fig.4).
Its vibrations are damped by the rear sus-
pension with variable rate coil spring and
hydraulic damper (see also page 13).
The rear wheel is secured to the end of
mainshaft.
6-

FiJ:. 4. Engine installation and suspensions.
I. Steering column and front suspension. 2. Engine.
case half, clutch side, with swinging arm. 4. Rear
sprinc with hydraulic damper.
3. Crank-
suspension

8
7
6
Fig. S. Section of engine.
I. Piston. 2. Crankshaft. 3. Clutch. 4. Mainshaf«.
8. Crankcasehalf,clutch side, with swineinearm. 5. Gear shifter. 6. Flywheel maeneto. 7. Kickstarter.

Ignition by a high tension coil in the fly-
wheel magneto (see Fig. 6).
Sparkplug: either AC 45 F, KLG F 70,
Lodge HN, or Champion L 86.
Ignition timing with spark advance of
28 :1: 10.
Lubrication by oil in the fuel mixture for
piston, cylinder, gudgeon pin, con. rod, crank-
shaft, main bearings.
Both clutch and gear box operate in oil bath.
Feeding. Fuel feed to the carburettor is
provided for by gravity (see Fig. 7) with
petroil mixture.
Carburettor with float-chamber.
with total capacity of 1.7 Imp.
emergency reserve.
Three-waytap ("on" - "off" - "reserve").
Fuel tank
gals. and
T
1;\"6
3
2
Fig. 6. Ignition diagram.
I. Ignition coil in flywheel magneto. 2. Rotor cam. 3. Breaker.
4. Condenser. S. Sparkplug. 6. Engine cut..out on switch.
-9