VESPA 90 Installation guide

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OPERATION AND MAINTENANCE

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OPERATION AND MAINTENANCE
DOUGLAS (SALES & SERVICE) LTD., KINGSWOOD, BRISTOL
Telephone 67-1881
DIVISION OF THE WESTINGHOUSE BRAKE AND SIGNAL COMPANY LIMITED

NOTICE
We trust that your Vespawill give you excellent service, and will satisfyyour every need.
This booklet, in which the simple instructions for operation and maintenance can be found,
will enable you to understand and use your machine in the most advantageous manner.
To keep your VESPA in perfect running order and not to invalidate the guarantee offered
by the contract, it is advisable to entrust repairs only to retailers or authorised service stations.
Demand original VESPAspare parts exclusively., All VESPAsparesare madeofthe samematerial,
have undergone the same machining steps and inspections as the components of your VESPA.
This meansguarantee for long lifeand normal performance of your machine and for your personal
safety.
Special care should be taken with regard to fuel mixture which should consist of a good
quality petrol and oil of make, grade and in the amount prescribed inthis booklet, page28.
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
of carrying out repairs when such become necessary.
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INDEX OF MAIN DIRECTIONS
The descriptions and illustrations in this booklet are not to be taken as binding on the Manufacturer. The essential
features of the model described and illustrated herein remaining unaltered, Douglas (Sales & Service) Ltd. reserve
therefore the right to carry out at any moment, without being obliged to bring this booklet up..to..date in due course,
modification that may occur concerning machine units and parts, or delivery of accessories, that the Firm deems to
be convenient on improvement purposes or for what may concern manufacturing or commercial requirements.
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Introduction ... ... ... page 2Lubrication chart ... .. . ... page 28
Layout of controls ... ... .. 5Operating instructions: Faultfind-
Technicaldata 6ing ... ... ... ... .. 32
... ... ... ..
Identification detaiI ... ... .. 10 Engine: description ... ... .. 34
Operating instruction ... ... .. 11 Chassis: description 34
... ... ..
Tyre pressures ... ... ... .. 11
Running-in 13 Wiring diagram ... ... ... .. 36
... ... ... ..
Maintenance ... ... ... .. 16 Electricalequipment ... ... .. 38

Fig. I - Vespa 90
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Fig.2 - Installationofcontrols and transmissions
I. Clutch control (lever) and gear change (twist grip) - 2. Front
brake lever - 3. Throttle twist trip. 4. Main switch unit. 5. Front
brake shoes- 6. Rearbrake pedal- 7. Kickstarter - 8. Gear selector
and gear control adjusting screws . 9. Rear brake shoe - 10.
Clutch . 11. Carburettor and air cleaner - 12. Choke control
13. Fuel Tap.
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L
TECHNICAL DATA
Consumption: (CUNA Standards) approx.
156 mls.jimp. gal.. petrol-oil mixture i.e.
2% oil.
Max. Speed: (CUNA Standards) 43.5 m.p.h.
Carrying capacity 2 persons
Range 174miles
Max fuel capacity: 1.15 imp galls. incl. 0.15
imp. galls. reserve
DIMENSIONS
Wheel base
Handlebar width
Total length
1160mm. (45.2")
610 mm. (23.9")
1650mm. (64.9")
Max. height
Min. ground clearance
Turning radius
Total dry weight
995 mm. (39.17")
225 mm. ( 8.85")
1650mm. (64.9")
70 Kg. (157 Ibs.)
Engine: Displacement 88.5 C.c.- 5.4 cu. in. -
(Bore47 mm. - 1.85"- Stroke 51 mm. -
2.0"- Compression ratio I:7.2; Two-stroke
rotary distribution).
H.T. flywheel magneto coil ignition.
Spark advance: 19° :J: 1°before T.D.C.
Sparking plug: Recommendations see p. 38.
Note.- The fuel consumption and maximum speed figures must not be accepted as binding.
Manyfactors outside our control can considerably affect them once the machine is in the hands
of the owner and on the road.
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Fig. 3 .. Engine section
I. Group carburettor air cleaner .. 2. Piston .. J. Crankshaft
4. Clutch.. 5. Mainshaft and gear pinion assy. .. 6. Gear shlfter
7. Flywheel magneto.. 8. Kicksurter.. 9. Crankcase swinging arm
clutch side (pivoted to frame).
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..
I
I
lFig. 4 - Steering lock
I. Normal position - 2. Locked position
~... ~
Fig.5 - Dual Seat (for pivoting the seat on its forward edge push
thl lever indicated by arrow).
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B/-....
.-.
,~
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A: Open the fuel tap -B: Select neutral -C: Pull
out the Choke control rod (with cold engine) - D: Bring
throttle twist grip to idling position . E: Depress
the Kickstarter.
Fig. 6 - Starting Instructions
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