APRILIA RX 50 - 2002 User manual

ONLY FOR THE CATALYTIC VERSION

USE ONLY UNLEADED PETROL IN CONFORMITY WITH THE DIN 51607 STANDARD, MIN. O.N. 95

(N.O.R.M.) AND 85 (N.O.M.M.) AND HIGH PERFORMANCE SYNTHETIC OIL FOR 2 STROKE ENGINES.

THE USE OF FUELS AND LUBRICANTS DIFFERENT FROM THOSE INDICATED CAUSES SEVERE

FUNCTIONAL INCONVENIENCES TO THE VEHICLE AND THE VOIDING OF THE aprilia GUARANTEE.

ONLY FOR THE CATALYTIC VERSION

To have the catalytic converter functioning correctly for long periods and to reduce possible

problems regarding the contamination of the thermal unit and of the exhaust, it is necessary to

avoid covering long distances with the engine running at constantly low rpm.

It is sufficient to alternate these periods with periods in which the engine runs at relatively high rpm,

even if only for a few seconds, but rather frequently.

What has been stated above assumes particular importance for the cold starting of the engine: in this

case, in order to reach a rpm regime sufficient to enable the “priming” of the catalytic reaction, you just

need to make sure that the temperature of the thermal unit has reached at least 50°C, which generally

occurs a few seconds after starting the engine.

CATALYTIC SILENCER

The catalytic version of the RX50 is fitted with a silencer with metal catalytic converter of the “platinum-

rhodium bivalent” type. This device provides for the oxidation of the CO (carbon monoxide) and of the

HC (unburned hydrocarbons) contained in the exhaust gases, changing them into carbon dioxide and

steam, respectively. Due to the catalytic reaction, the high temperature reached by the exhaust gases

results in the burning of the oil particles, thus keeping the silencer clean and eliminating the exhaust

fumes.

Avoid parking the catalytic vehicle near dry brush wood or in places easily accessible to chil-

dren, as the catalytic silencer becomes extremely hot during use; be very careful and avoid any

kind of contact before it has completely cooled down.

First edition: april 2002

Reprint:

Produced and printed by:

DECA s.n.c.

Via Risorgimento, 23/1 - Lugo (RA) - Italy

Tel. +39 - 0545 35235

Fax +39 - 0545 32844

E-mail: deca@decaweb.it

www.decaweb.it

On behalf of:

aprilia s.p.a.

via G. Galilei, 1 - 30033 Noale (VE) - Italy

Tel. +39 - 041 58 29 111

Fax +39 - 041 44 10 54

www.aprilia.com

This manual contains all the main information and the

instructions required for normal use and mainte-

nance of your vehicle.

For controls and check-ups that cannot be carried out

easily with the standard equipment supplied, we ad-

vise you to consult our Dealers who can assure you

of quick and careful servicing.

To keep your aprilia vehicle always in perfect operat-

ing conditions, we advise you to insist on Original

Spares and to have repairs carried out only by aprilia

Authorized Outlets and Official Dealers.

When ordering spare parts from the Dealers, always

quote the spares code which is stamped on a sticker

placed under the saddle.

It is a good idea to make a note of the identification

code in the space provided in this manual, so that

you will always have a record of it even if the identifi-

cation sticker comes off.

All information is purely indicative and may be sub-

ject to variation without notice.

Carefully observe the instructions preceded by the

following warning signs:

Safety norms and regulations to protect

the driver and other people from severe

injuries or grave risks.

Caution norms and suggestions to avoid

damaging the vehicle and/or hurting

yourself or other people.

Indications to make the operations easier.

Technical information.

CONTENTS

Pag.

Technical features .................................................... 5

Identification data .....................................................8

Arrangement of the controls.....................................9

Instructions for use.................................................12

Maintenance...........................................................15

Electrical system ....................................................34

Cleaning ................................................................. 39

Long inactivity ........................................................39

Lubricant chart .......................................................41

Regular service intervals chart ..............................42

Importers................................................................44

Wiring diagram ....................................................... 50

automatic light switching version

(Automatic Switch-on Device)

catalytic version

VERSION:

Italy Holland Croatia

United

Kingdom

Switzerland Australia

Austria Denmark United States

of America

Portugal Japan Brazil

Finland Singapore South Africa

Belgium Slovenia New Zealand

Germany Israel Canada

France South Korea

Spain Malaysia

Greece Chile

TECHNICAL FEATURES

MOTOR

Model ..................................................................AM6

Type...................................... 2 stroke single-cylinder

with lamellar inlet

Cooling.......................... Liquid with forced circulation

Lubrication ...................................................Separate

Bore / stroke................................... 40,3 mm / 39 mm

Displacement ............................................49,75 cm3

Compression ratio............................................. 12 : 1

KICK START

To pedal (Kick-starter)

CLUTCH

Light alloy multiple disc oil bath

GEARS

Frontal clutch 6 speed unit

TRANSMISSION

Primary ........................................ Helical teeth gears

Ratio 3,55 (Z=20/71)

Secondary.........chain 1/2"x3,16" = Roller Ø7,75 mm

Ratio: 4,25 (Z=11/51)

CARBURETTOR

Model ...................................................Dell’Orto SHA

Diffuser................................................... Ø 12-14 mm

AIR FILTER

Sponge

IGNITION

Type ............................................................electronic

Spark advance reference ............................... 1,5 mm

correspondent to 20° before T.D.C.

Spark plug............................................ NGK BR9 ES

FUEL

Running-in (500 km) ......................... unleaded petrol

according to the DIN 51607 standard

min. O.N. 95 (N.O.R.M.)

and 85 (N.O.M.M.)

Aferwords:......................................... unleaded petrol

according to the DIN 51607

min. O.N. 95 (N.O.R.M.)

and 85 (N.O.M.M.)

Fuel tank capacity ............................................... 9,5 l

Reserve (with mechanical operation).................. 1,5 l

Mixer oil tank capacity......................................... 1,3 l

Reserve (with warning light on the dashboard)... 0,5 l

LUBRICATION

Gearbox and primary transmission .820 cm3of oil (*)

COOLING

Cooling circuit capacity ................................. 0,9 l(*)

(60% antifreeze + 40% water)

Minimum operating temperature .......................-17°C

FRAME

High-resistance one-beam structure, split over the

exhaust

REAR FORK

Made of rectangular-profile steel, mounted on anti-

friction bushings

SUSPENSIONS

Front.................................... aprilia telehydraulic fork

with reversed rods

with advanced pin, rods Ø 35

stroke 250 mm

Rear ................................ aprilia Progressive System

adjustable hydraulic mono-shock absorber

Rear wheel stroke ......................................... 260 mm

(*) see “LUBRICANT CHART”

BRAKES

Front.........................................disc brake Ø 230 mm

with hydraulic control

and floating caliper with two parallel pins

Rear .........................................disc brake Ø 220 mm

with hydraulic control

and fixed caliper

with two opposing pins Ø 28 mm

TYRES

Front.......................................................100/80 x 17"

Rear .......................................................130/70 x 17"

RIMS

Front...........................................................17 x 2,50"

Rear ...........................................................17 x 3,00"

DIMENSIONS

Max. length..................................................2060 mm

Wheelbase (slot center) ..............................1360 mm

Handlebars width ..........................................780 mm

Max. height..................................................1350 mm

Seat height....................................................865 mm

Footboard height...........................................355 mm

TYRE INFLATION PRESSURE

Maximum front and rear pressure: 2,5 bar

Low pressure can cause handling prob-

lems and the tendency to weave and in

extreme cases loss of control.

Moreover this will cause a great increase of roll-

ing friction.

The results are: high consumption of fuel and re-

duced maximum speed.

The disadvantage may cause a damage of the cover,

due to excessive local deformation.

Tyre pressure must be checked when the

tyres are at environment temperature,

that is, when the vehicle has not been moved in

the last 2 or 3 hours for more than 1 km.

Check the depth of the tyre tread often, if

it is worn below the allowable limit (2 -

3 mm.) change the tyre.

– The tyre should often be inspected for signs of

damage or cuts.

– Blowings or irregular wavings are showing in-

ternal damages, which request the prompt re-

placement of the tyre.

Remember: 1 mile = 1.6 km

1 km = 0.625 miles

Kind of drive Driver only

Front Rear

On mixed roads 1,8 bar 1,9 bar

On asphalt

paved roads 1,8 bar 1,9 bar

IDENTIFICATION DATA

It is a good rule to write down the frame and engine

numbers in the space provided in this manual.

The frame number can be used for the purchase of

spare parts.

Do not alter the identification numbers if

you do not want to incur severe penal and

administrative sanctions. In particular, the altera-

tion of the frame number results in the immediate

invalidity of the guarantee.

FRAME NUMBER (Fig. 1)

The frame number is stamped on the left side of the

steering head.

Frame n°

ENGINE NUMBER (Fig. 2)

The engine number is printed in the space provided

upper the pinion.

Engine n°

Fig. 1

Fig. 2

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