APRILIA RS4 125 Leitfaden

SERVICE STATION MANUAL

B043126

RS4 125

SERVICE STATION

MANUAL

RS4 125

THE VALUE OF SERVICE

As a result of continuous technical updates and specific mechanic training programs for Aprilia products,

only Aprilia Official Network mechanics know this vehicle fully and have the special tools necessary to

carry out maintenance and repair operations correctly.

The reliability of the vehicle also depends on its mechanical state. Checking the vehicle before riding it,

its regular maintenance and the use of Original Aprilia Spare Parts only are essential factors!

For further information contact the nearest Official Dealer and/or Service Centre, or consult the Yellow

Pages or search directly on the inset map in our Official Website:

www.aprilia.com

Only by requesting Aprilia Original Spare Parts can you be sure of purchasing products that were

developed and tested during the actual vehicle design stage. All Aprilia Original Spare Parts undergo

quality control procedures to guarantee reliability and durability.

The descriptions and illustrations given in this publication are not binding; While the basic characteristics

as described and illustrated in this booklet remain unchanged, Aprilia reserves the right, at any time and

without being required to update this publication beforehand, to make any changes to components, parts

or accessories, which it considers necessary to improve the product or which are required for

manufacturing or construction reasons.

Notallversions/modelsshowninthispublicationareavailableinallcountries.Theavailabilityofindividual

versions/models should be confirmed with the official aprilia sales network.

prohibited. Aprilia - After sales service.

The Aprilia trademark is the property of Piaggio & C. S.p.A.

SERVICE STATION MANUAL

RS4 125

NOTE Provides key information to make the procedure easier to understand and carry out.

CAUTION Refers to specific procedures to carry out for preventing damages to the vehicle.

WARNING Refers to specific procedures to carry out to prevent injuries to the repairer.

Personal safety Failure to completely observe these instructions will result in serious risk of personal

injury.

Safeguarding the environment Sectionsmarkedwiththis symbol indicate the correct use of the vehicle

to prevent damaging the environment.

Vehicle intactness The incomplete or non-observance of these regulations leads to the risk of serious

damage to the vehicle and sometimes even the invalidity of the guarantee

INDEX OF TOPICS

CHARACTERISTICS CHAR

SPECIAL TOOLS S-TOOLS

MAINTENANCE MAIN

ELECTRICAL SYSTEM ELE SYS

ENGINE FROM VEHICLE ENG VE

ENGINE ENG

POWER SUPPLY P SUPP

SUSPENSIONS SUSP

CHASSIS CHAS

BRAKING SYSTEM BRAK SYS

COOLING SYSTEM COOL SYS

BODYWORK BODYW

PRE-DELIVERY PRE DE

INDEX OF TOPICS

CHARACTERISTICS CHAR

Rules

Safety rules

Carbon monoxide

If you need to keep the engine running while working on the vehicle, please ensure that you do so in

an open or very well ventilated area. Never run the engine in an enclosed area. If you do work in an

enclosed area, make sure to use a fume extraction system.

CAUTION

EXHAUSTEMISSIONSCONTAINCARBONMONOXIDE,APOISONOUSGASWHICHCANCAUSE

LOSS OF CONSCIOUSNESS AND EVEN DEATH.

Fuel

CAUTION

THE FUEL USED TO POWER INTERNAL COMBUSTION ENGINES IS HIGHLY FLAMMABLE AND

MAY BE EXPLOSIVE UNDER CERTAIN CONDITIONS. IT IS THEREFORE RECOMMENDED TO

CARRY OUT REFUELLING AND MAINTENANCE PROCEDURES IN A VENTILATED AREA WITH

THE ENGINE SWITCHED OFF. DO NOT SMOKE DURING REFUELLING AND NEAR FUEL VA-

POURS, AVOIDING ANY CONTACT WITH NAKED FLAMES, SPARKS OR OTHER SOURCES

WHICH MAY CAUSE THEM TO IGNITE OR EXPLODE.

DO NOT DISPERSE FUEL IN THE ENVIRONMENT.

KEEP OUT OF THE REACH OF CHILDREN

Hot components

The engine and the exhaust system components become very hot and remain hot for some time after

the engine has been switched off. When handling these components, wear insulating gloves or wait

until the engine and the exhaust system have cooled down.

Coolant

The coolant contains ethylene glycol which, under certain conditions, can become flammable.

When it burns, ethylene glycol produces an invisible flame which however can cause burns.

CAUTION

TAKE CARE NOT TO POUR COOLANT ONTO HOT ENGINE OR EXHAUST SYSTEM COMPO-

NENTS; THE FLUID MAY CATCH FIRE AND BURN WITH INVISIBLE FLAMES. WHEN CARRYING

OUT MAINTENANCE OPERATIONS, IT IS ADVISABLE TO WEAR LATEX GLOVES. EVEN

THOUGH IT IS TOXIC, COOLANT HAS A SWEET FLAVOUR WHICH MAKES IT VERY ATTRAC-

TIVE TO ANIMALS. NEVER LEAVE THE COOLANT IN OPEN CONTAINERS IN AREAS ACCES-

SIBLE TO ANIMALS AS THEY MAY DRINK IT.

Characteristics RS4 125

CHAR - 6

KEEP OUT OF THE REACH OF CHILDREN

DO NOT REMOVE THE RADIATOR CAP WHEN THE ENGINE IS STILL HOT. THE COOLANT IS

UNDER PRESSURE AND MAY CAUSE BURNS.

Used engine oil and transmission oil

CAUTION

IT IS ADVISABLE TO WEAR PROTECTIVE IMPERMEABLE GLOVES WHEN SERVICING THE VE-

HICLE.

THE ENGINE OR GEARBOX OIL MAY CAUSE SERIOUS INJURIES TO THE SKIN IF HANDLED

FOR PROLONGED PERIODS OF TIME AND ON A REGULAR BASIS.

WASH YOUR HANDS CAREFULLY AFTER HANDLING OIL.

HAND THE OIL OVER TO OR HAVE IT COLLECTED BY THE NEAREST USED OIL RECYCLING

COMPANY OR THE SUPPLIER.

DO NOT DISPOSE OF OIL IN THE ENVIRONMENT

KEEP OUT OF THE REACH OF CHILDREN

Brake and clutch fluid

BRAKE AND CLUTCH FLUIDS CAN DAMAGE THE PLASTIC OR RUBBER PAINTED SURFACES.

WHEN SERVICING THE BRAKING SYSTEM OR THE CLUTCH SYSTEM, PROTECT THESE COM-

PONENTS WITH A CLEAN CLOTH. ALWAYS WEAR PROTECTIVE GOGGLES WHEN SERVICING

THESE SYSTEMS. BRAKE AND CLUTCH FLUIDS ARE EXTREMELY HARMFUL FOR YOUR

EYES. IN THE EVENT OF ACCIDENTAL CONTACT WITH THE EYES, RINSE THEM IMMEDIATELY

WITH ABUNDANT COLD, CLEAN WATER AND SEEK MEDICAL ADVICE.

KEEP OUT OF THE REACH OF CHILDREN

Battery electrolyte and hydrogen gas

CAUTION

THE BATTERY ELECTROLYTE IS TOXIC, CORROSIVE AND AS IT CONTAINS SULPHURIC ACID,

IT CAN CAUSE BURNS WHEN IN CONTACT WITH THE SKIN. WHEN HANDLING BATTERY

ELECTROLYTE, WEAR TIGHT-FITTING GLOVES AND PROTECTIVE APPAREL. IN THE EVENT

OF SKIN CONTACT WITH THE ELECTROLYTIC FLUID, RINSE WELL WITH PLENTY OF CLEAN

WATER. IT IS PARTICULARLY IMPORTANT TO PROTECT YOUR EYES BECAUSE EVEN TINY

AMOUNTSOFBATTERYACIDMAYCAUSE BLINDNESS. IF THEFLUIDGETSINCONTACTWITH

YOUR EYES, WASH WITH ABUNDANT WATER FOR FIFTEEN MINUTES AND CONSULT AN EYE

SPECIALIST IMMEDIATELY. THE BATTERY RELEASES EXPLOSIVE GASES; KEEP IT AWAY

FROM FLAMES, SPARKS, CIGARETTES OR ANY OTHER HEAT SOURCES. ENSURE ADE-

QUATE VENTILATION WHEN SERVICING OR RECHARGING THE BATTERY.

KEEP OUT OF THE REACH OF CHILDREN

BATTERY LIQUID IS CORROSIVE. DO NOT POUR IT OR SPILL IT, PARTICULARLY ON PLASTIC

COMPONENTS. ENSURE THAT THE ELECTROLYTIC ACID IS COMPATIBLE WITH THE BAT-

TERY TO BE ACTIVATED.

Maintenance rules

GENERAL PRECAUTIONS AND INFORMATION

When repairing, dismantling and reassembling the vehicle, follow the recommendations given below

carefully.

RS4 125 Characteristics

CHAR - 7

BEFORE DISASSEMBLING COMPONENTS

•Beforedismantling components, remove dirt, mud, dust and foreign bodies from the vehicle.

Use the special tools designed for this bike, as required.

COMPONENTS REMOVAL

•Donotloosenand/or tighten screws and nuts using pliers or any other tools than the specific

wrench.

•Mark positions on all connection joints (pipes, cables etc.) before separating them, and

identify them with distinctive symbols.

•Each component needs to be clearly marked to enable identification during reassembly.

•Clean and wash the dismantled components carefully using a low-flammability detergent.

•Keep mated parts together since they have "adjusted" to each other due to normal wear.

•Some components must be used together or replaced completely.

•Keep away from heat sources.

REASSEMBLING COMPONENTS

CAUTION

BEARINGS MUST ROTATE FREELY, WITHOUT JAMMING AND/OR NOISE, OTHERWISE, THEY

NEED TO BE REPLACED.

•Only use ORIGINAL Aprilia SPARE PARTS.

•Comply with lubricant and consumables use guidelines.

•Lubricate parts (whenever possible) before reassembling them.

•Whentightening nutsand screws, starteither from thecomponents withthelargest diameter

or from the innermost components, proceeding diagonally. Tighten nuts and screws in suc-

cessive steps before applying the tightening torque.

•Always replace self-locking nuts, washers, sealing rings, circlips, O-rings (OR), cotter pins

and screws with new parts if the thread is damaged.

•When assembling the bearings, make sure to lubricate them well.

•Check that each component is assembled correctly.

•After a repair or routine maintenance, carry out pre-ride checks and test the vehicle on

private grounds or in an area with low traffic.

•Clean all mating surfaces, oil seal rims and gaskets before refitting. Smear a thin layer of

lithium-based grease on the oil seal rims. Reassemble oil seals and bearings with the brand

or batch number facing outward (visible side).

ELECTRICAL CONNECTORS

Electric connectors must be disconnected as described below; failure to comply with this procedure

causes irreparable damage to both the connector and the wiring harness:

Press the relative safety clips, if applicable.

•Grip the two connectors and disconnect them by pulling them in opposite directions.

Characteristics RS4 125

CHAR - 8

•If any signs of dirt, rust, moisture, etc. are noted, clean the inside of the connector carefully

with a jet of compressed air.

•Ensure that the cables are correctly fastened to the internal connector terminals.

•Then connect the two connectors, ensuring that they couple correctly (if fitted with clips, you

will hear them "click" into place).

CAUTION

DO NOT DISCONNECT CONNECTORS BY PULLING THE CABLES.

NOTE

THE TWO CONNECTORS CAN ONLY BE CONNECTED IN ONE DIRECTION: CONNECT THEM

THE RIGHT WAY ROUND.

TIGHTENING TORQUES

CAUTION

REMEMBERTHATTHETIGHTENINGTORQUESFOR ALL FASTENING ELEMENTS ONWHEELS,

BRAKES, WHEEL AXLES AND ANY OTHER SUSPENSION COMPONENTS PLAY A KEY ROLE

IN ENSURING VEHICLE SAFETY AND MUST COMPLY WITH SPECIFIED VALUES. CHECK THE

TIGHTENING TORQUES OF FASTENING ELEMENTS ON A REGULAR BASIS AND ALWAYS USE

A TORQUE WRENCH TO REASSEMBLE THESE COMPONENTS. FAILURE TO COMPLY WITH

THESE RECOMMENDATIONS MAY CAUSE ONE OF THESE COMPONENTS TO LOOSEN OR

EVEN DETACH, CAUSING A WHEEL TO LOCK OR COMPROMISING VEHICLE HANDLING. THIS

MAY LEAD TO FALLS, WITH THE RISK OF SERIOUS INJURY OR DEATH.

Running-in

Runningtheenginein correctly is essential for ensuring engine longevity and functionality. Twisty roads

and gradients are ideal for running in the engine, brakes and suspension effectively. Vary your riding

speed during the running in period. This ensures that components operate in "loaded" conditions and

then "unloaded" conditions, allowing the engine components to cool.

CAUTION

THE FULL PERFORMANCE OF THE VEHICLE IS ONLY AVAILABLE AFTER THE SERVICE AT

THE END OF THE RUNNING IN PERIOD.

Follow the guidelines detailed below:

•Do not fully open the throttle grip abruptly at low engine speeds, either during or after the

running in period.

•During the first 100 Km (62 miles) use the brakes gently, avoiding sudden or prolonged

braking. That is to permit the adequate adjustment of the pad friction material to the brake

discs.

Vehicle identification

CAUTION

THE MODIFICATION OF THE IDENTIFICATION CODES IS A SERIOUS PUNISHABLE CRIME.

HOWEVER, THE LIMITED WARRANTY FOR NEW VEHICLES WILL BE VOID IF THE VEHICLE

IDENTIFICATION NUMBER (VIN) HAS BEEN MODIFIED OR NOT PROMPTLY DETERMINED.

RS4 125 Characteristics

CHAR - 9

Chassis number

The chassis number is stamped on the right hand

side of the headstock.

This number consists of numbers and letters, as in

the example shown below.

ZD4TW0000YSXXXXXX

KEY:

ZD4: WMI (World manufacturer identifier) code;

TW: model;

000: version variation;

0: free digit

Yyear of manufacture

S: production plant (H= Martorelles (Spain); S=

Scorzè (Italy); 4= Zongshen (China); 5= Ponte-

dera (Italy); M= Mandello del Lario (Italy)

XXXXXX: serial number (6 digits);

CHASSIS NUMBER

The chassis number is stamped on the right hand

side of the headstock.

Dimensions and mass

DIMENSIONS

Specification Desc./Quantity

Maximum length 1,953 mm (76.89 in)

Maximum width (with mirrors) 740 mm (29.13 in)

Maximum height to the windshield 1,138 mm (44.80 in)

Saddle height 837 mm (32.95 in)

Height passenger saddle 978 mm (38.50 in)

Height handlebar 840 mm (33.07 in)

Minimum ground clearance 137 mm (5.39 in)

Wheelbase 1,350 mm (53.15 in)

Kerb weight 140 kg (308.64 lb)

Weight (without fuel) 135.8 kg (299.39 lb)

Engine

ENGINE

Specification Desc./Quantity

Engine type Single cylinder 4 stroke

Engine capacity (125) 124.2 cm³ (7.58 cu.in)

Bore x Stroke (58 x 47) mm; (2.28 x 1.85) in

Compression ratio 12.6 +/- 0.5 : 1

Electric starter

Idle speed 1900 +/- 100 rpm

Clutch multiple-disk,oil-bathedclutchwithhand control on theleftside

of the handlebar.

Characteristics RS4 125

CHAR - 10

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