VESPA LX Series User Manual
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VESPA LX Series User Manual

125 - 150 i.e.
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MANUALE STAZIONE DI SERVIZIO
XXXXXX IT-XXXXXX EN-XXXXXX FR-XXXXXX DE-
XXXXXX ES-XXXXXX PT-XXXXXX OL-XXXXXX EL
Vespa LX 125 - 150 i.e.

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Summary of Contents for VESPA LX Series

  • Page 1 MANUALE STAZIONE DI SERVIZIO XXXXXX IT-XXXXXX EN-XXXXXX FR-XXXXXX DE- XXXXXX ES-XXXXXX PT-XXXXXX OL-XXXXXX EL Vespa LX 125 - 150 i.e.
  • Page 2 MANUALE STAZIONE DI SERVIZIO Vespa LX 125 - 150 i.e. The descriptions and illustrations given in this publication are not binding. While the basic specifications as described and illustrated in this manual remain unchanged, PIAGGIO-GILERA 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.
  • Page 3 MANUALE STAZIONE DI SERVIZIO Vespa LX 125 - 150 i.e. Questo manuale per stazioni di servizio è stato realizzato da Piaggio & C. Spa per essere utilizzato dalle officine dei concessionari e sub-agenzie Piaggio-Gilera. Si presuppone che chi utilizza questa pubblicazione per la manutenzione e la riparazione dei veicoli Piaggio, abbia una conoscenza base dei principi della meccanica e dei procedimenti inerenti la tecnica della riparazione dei veicoli.

  • Page 5: Index Of Topics

    INDEX OF TOPICS CHAR HARACTERISTICS TOOL OOLING MAIN AINTENANCE TROUBL ROUBLESHOOTING ELE SYS LECTRICAL SYSTEM ENG VE NGINE FROM VEHICLE NGINE INJEC NJECTION SUSP USPENSIONS BRAK SYS RAKING SYSTEM CHAS HASSIS PRE DE DELIVERY TIME...
  • Page 6 INDEX OF TOPICS CHAR HARACTERISTICS...

  • Page 7: Safety Rules

    Vespa LX 125 - 150 i.e. Characteristics Rules This section describes general safety rules for any maintenance operations performed on the vehicle. Safety rules - If work can only be done on the vehicle with the engine running, make sure that the premises are well- ventilated, using special extractors if necessary;...

  • Page 8: Vehicle Identification

    Vespa LX 125 - 150 i.e. Characteristics Vehicle identification VEHICLE IDENTIFICATION Specification Desc./Quantity Chassis prefix (125) ZAPM4430000 to 100001 Engine prefix (125) M444Mto 1001 Chassis prefix (150) ZAPM4440000 to 100001 Engine prefix (150) M445Mto 1001 Dimensions and mass WEIGHTS AND DIMENSIONS Specification Desc./Quantity...
  • Page 9 Vespa LX 125 - 150 i.e. Characteristics Engine ENGINE Specification Desc./Quantity Engine Single cylinder 4-stroke Timing system Single overhead camshaft (SOHC) with 2 valves Valve clearance intake 0.10 outlet 0.15 Bore x stroke (125) 57 x 48.6 mm Bore/stroke (150) 62.8 x 48.6 mm...

  • Page 10: Turn Indicator Switch

    Vespa LX 125 - 150 i.e. Characteristics CHECKING REMOTE CONTROLS «A» OPER- ATING AS CIRCUIT BREAKERS 1) Check that, given regular conditions, there is no continuity between terminals 30 and 87. 2) Apply 12V voltage to power terminals 85 and 86 of the remote control.
  • Page 11 Vespa LX 125 - 150 i.e. Characteristics STARTER BUTTON KEY SWITCH FUEL INJECTOR Type: 3 holes Conicity of the nozzle: 20° Resistance at terminals: 13.7 to 15.2 Ohm FUEL PUMP UNIT Mechanical type pressure regulator operating at a pressure of 2.5 BAR Pump winding resistance: ~ 1.5 Ohm...

  • Page 12: Engine Speed Sensor

    Vespa LX 125 - 150 i.e. Characteristics ENGINE SPEED SENSOR Resistance between pins 13 and 15: 100 to 150 Ohm at approx. 20° ENGINE TEMPERATURE SENSOR 0° = 9440 Ohm +10° = 5660 Ohm +20° = 3500 Ohm +30° = 2265 Ohm +80°...

  • Page 13: Chassis And Suspension

    Vespa LX 125 - 150 i.e. Characteristics STATOR Power: 450 W Resistance between terminals: 0.2 to 1 Ohm terminal insulation from ground Frame and suspensions CHASSIS AND SUSPENSION Specification Desc./Quantity Chassis Stamped plate body with welded structural reinforcements. Front suspension Single arm with helical spring and single double-acting hy- draulic shock absorber.

  • Page 14: Tightening Torques

    Vespa LX 125 - 150 i.e. Characteristics Specification Desc./Quantity Front tyre pressure 1.6 bar Rear tyre pressure 2 bar Rear wheel pressure (rider and passenger): 2.3 bar N.B. CHECK AND ADJUST TYRE PRESSURE WITH TYRES AT AMBIENT TEMPERATURE. REGU- LATE PRESSURE ACCORDING TO THE WEIGHT OF BOTH RIDER AND ACCESSORIES...

  • Page 15: Crankcase And Crankshaft

    Vespa LX 125 - 150 i.e. Characteristics FLYWHEEL Name Torque in Nm Flywheel fan screws 3 to 4 Stator assembly screws (°) 3 to 4 Flywheel nut 52 to 58 Pick-up screw 3 to 4 (°) Apply LOCTITE 242 threadlock...

  • Page 16: Assembly Clearances

    Vespa LX 125 - 150 i.e. Characteristics Overhaul data Assembly clearances Cylinder - piston assy. Version 150 COUPLING BETWEEN (A ) PISTON AND CYLINDER (150) ERKE Name Initials Cylinder Piston Play on fitting Coupling 62.580 to 62.587 62.533 to 62.540 0.040 to 0.054...

  • Page 17: Piston Rings

    Vespa LX 125 - 150 i.e. Characteristics PISTON TO CAST IRON CYLINDER COUPLING (125) Name Initials Cylinder Piston Play on fitting Coupling 56.997 to 57.004 56.944 to 56.951 0.046 to 0.060 Coupling 57.004 to 57.011 56.951 to 56.958 0.046 to 0.060 Coupling 57.011 to 57.018...
  • Page 18 Vespa LX 125 - 150 i.e. Characteristics Name Description Dimensions Initials Quantity Compression ring 3rd 63.2 x 1 0.15 to 0.30 oversize Oil scraper ring 3rd 63.2 x 1 0.20 to 0.40 oversize Oil scraper ring 3rd 63.2 x 2.5 0.20 to 0.40...
  • Page 19 Vespa LX 125 - 150 i.e. Characteristics Slot packing system - Provisionally fit the piston into the cylinder, without any base gasket. - Assemble a dial gauge on the specific tool - Set the dial gauge to zero at a contrast plane with an average preload, for example 5 mm. Keeping the zero setting position, fit the tool on the cylinder and lock it with 2 nuts, as shown in the figure.
  • Page 20 Vespa LX 125 - 150 i.e. Characteristics Specification Desc./Quantity Value measured 1.3 to 1.4 Thickness 0.4 ± 0.05 Products RECOMMENDED PRODUCTS TABLE Product Description Specifications AGIP ROTRA 80W-90 Rear hub oil SAE 80W/90 Oil that exceeds the re- quirements of API GL3 specifications...

  • Page 21: Index Of Topics

    INDEX OF TOPICS TOOL OOLING...

  • Page 22: Specific Tools

    Vespa LX 125 - 150 i.e. Tooling SPECIFIC TOOLS Stores code Description 001330Y Tool for fitting steering seats 001467Y009 Driver for OD 42-mm bearings 001467Y013 Pliers to extract ø 15-mm bearings 001467Y014 Pliers to extract ø 15-mm bearings 001467Y017 Bell for bearings, OD 39 mm...
  • Page 23 Vespa LX 125 - 150 i.e. Tooling Stores code Description 006029Y Punch for fitting fifth wheel seat on steer- ing tube 008564Y Flywheel extractor 020004Y Punch for removing fifth wheels from headstock 020021Y Front suspension service tool 020036Y Punch 020037Y...
  • Page 24 Vespa LX 125 - 150 i.e. Tooling Stores code Description 020038Y Punch 020055Y Wrench for steering tube ring nut 020074Y Support base for checking crankshaft alignment 020150Y Air heater mounting 020151Y Air heater 020193Y Oil pressure check gauge 020262Y Crankcase splitting plate...
  • Page 25 Vespa LX 125 - 150 i.e. Tooling Stores code Description 020263Y Driven pulley assembly sheath 020306Y Punch for assembling valve seal rings 020325Y Pliers for brake-shoe springs 020329Y Mity-Vac vacuum-operated pump 020330Y Stroboscopic light to check timing 020331Y Digital multimeter...
  • Page 26 Vespa LX 125 - 150 i.e. Tooling Stores code Description 020332Y Digital rpm indicator 020333Y Single battery charger 020334Y Multiple battery charger 020335Y Magnetic mounting for dial gauge 020357Y 32x35-mm Adaptor 020359Y 42x47-mm Adaptor TOOL - 26...
  • Page 27 Vespa LX 125 - 150 i.e. Tooling Stores code Description 020360Y 52x55-mm Adaptor 020363Y 20-mm guide 020364Y 25-mm guide 020365Y 22 mm guide 020368Y driving pulley lock wrench TOOL - 27...
  • Page 28 Vespa LX 125 - 150 i.e. Tooling Stores code Description 020375Y 28 x 30 mm adaptor 020376Y Adaptor handle 020382Y Tool to extract valve cotters 020382Y011 adapter for valve removal tool 020409Y Multimeter adaptor - Peak voltage detec- tion 020412Y...
  • Page 29 Vespa LX 125 - 150 i.e. Tooling Stores code Description 020414Y 28-mm guide 020423Y Driven pulley lock wrench 020424Y Driven pulley roller casing fitting punch 020425Y Punch for flywheel-side oil seal 020426Y Piston fitting fork 020456Y Ø 24 mm adaptor...
  • Page 30 Vespa LX 125 - 150 i.e. Tooling Stores code Description 020428Y Piston position check mounting 020430Y Pin lock fitting tool 020431Y Valve oil seal extractor 020434Y Oil pressure check fitting 020441Y 26 x 28 mm adaptor TOOL - 30...
  • Page 31 Vespa LX 125 - 150 i.e. Tooling Stores code Description 020439Y 17-mm guide 020444Y Tool for fitting/ removing the driven pulley clutch 020469Y Reprogramming kit for vehicle diagnostic tester 020480Y Petrol pressure check set 020481Y Control unit interface wiring TOOL - 31...
  • Page 32 Vespa LX 125 - 150 i.e. Tooling Stores code Description 020565Y Flywheel lock calliper spanner 020622Y Transmission-side oil guard punch 020680Y Diagnosis Tool 020641Y EFI Technology software upgrade TOOL - 32...

  • Page 33: Maintenance

    INDEX OF TOPICS MAIN AINTENANCE...

  • Page 34: Maintenance Chart

    Vespa LX 125 - 150 i.e. Maintenance Maintenance chart MAINTENANCE TABLE I: INSPECT AND CLEAN, ADJUST, LUBRICATE OR REPLACE, IF NECESSARY C: CLEAN, R: REPLACE, A: ADJUST, L: LUBRICATE * Check level every 3,000 km ** Replace every 2 years...
  • Page 35 Vespa LX 125 - 150 i.e. Maintenance - Disconnect spark plug HV cable hood and, acting on the engine compartment, release the cable from the retaining bracket. - Slide the internal cover upwards. - Unscrew the spark plug using the wrench sup- plied.
  • Page 36 Vespa LX 125 - 150 i.e. Maintenance Characteristic Electrode gap 0.7 to 0.8 mm Spark plug NGK CR8EB (125) - NGK CR7EB (150) Locking torques (N*m) Spark plug 12 to 14 Hub oil Check - Park the vehicle on flat ground and rest it on the centre stand.

  • Page 37: Air Filter

    Vespa LX 125 - 150 i.e. Maintenance - Remove the rear wheel. - Unscrew the oil drainage plug and drain out all the oil. - Screw in the drainage cap again and fill the hub with the prescribed oil. Recommended products...

  • Page 38: Engine Oil

    Vespa LX 125 - 150 i.e. Maintenance filter element between your hands, allow it to drip and then refit it. Possible oil or water deposits can be eliminated by removing the rubber lower cap. CAUTION IF THE VEHICLE IS USED ON DUSTY ROADS, IT IS NEC- ESSARY TO SERVICE THE AIR FILTER MORE OFTEN TO AVOID DAMAGING THE ENGINE.
  • Page 39 Vespa LX 125 - 150 i.e. Maintenance Since a certain quantity of oil still remains in the circuit, oil must be filled from oil dipstick/cover. Then start up the vehicle, leave it running for a few minutes and switch it off: after five minutes check the level and if necessary top up without exceeding the MAX level.

  • Page 40: Engine Oil Filter

    Vespa LX 125 - 150 i.e. Maintenance Engine oil filter The cartridge filter must be replaced every time the oil is changed. Use new oil of the recommended type for topping up and changing purposes. Make sure the pre-filter and drainage plug O-rings are in good conditions. Lubricate them and refit the mesh filter and the oil drainage plug, screwing them up to the prescribed torque.

  • Page 41: Checking The Ignition Timing

    Vespa LX 125 - 150 i.e. Maintenance Checking the ignition timing -Remove the flywheel fan. -Rotate the flywheel until the reference (arrow) matches the crankcase operation end as shown in the figure (TDC). Make sure that the 2V reference point on the camshaft control pulley is aligned with the reference point on the head as shown in the second figure.

  • Page 42: Level Check

    Vespa LX 125 - 150 i.e. Maintenance Level check Proceed as follows: - Rest the vehicle on its centre stand with the han- dlebars perfectly horizontal; - Check the level of liquid with the related warning light «A». A certain lowering of the level is caused by wear on the brake pads.

  • Page 43: Headlight Adjustment

    Vespa LX 125 - 150 i.e. Maintenance Brake pump reservoir screws 15 ÷ 20 Headlight adjustment Proceed as follows: 1. Place the vehicle, in running order and with the tyres inflated to the prescribed pressure, on a flat surface 10-m away from a white screen situated in a shaded area, making sure that the longitudinal axis of the scooter is perpendicular to the screen;...

  • Page 44: Troubleshooting

    INDEX OF TOPICS TROUBL ROUBLESHOOTING...

  • Page 45: Poor Performance

    Vespa LX 125 - 150 i.e. Troubleshooting Engine Poor performance POOR PERFORMANCE Possible Cause Operation Air filter blocked or dirty. Remove the sponge, wash with water and car shampoo, then soak it in a mixture of 50% petrol and 50% specific oil. Press with your hand without squeezing, allow it to drip dry and refit.
  • Page 46 Vespa LX 125 - 150 i.e. Troubleshooting Insufficient lubrication pressure LOW LUBRICATION PRESSURE Possible Cause Operation By-Pass remains open Check the By-Pass and replace if required. Carefully clean the By-Pass area. Oil pump with excessive clearance Perform the dimensional checks on the oil pump components...

  • Page 47: Noisy Suspension

    Vespa LX 125 - 150 i.e. Troubleshooting Battery BATTERY Possible Cause Operation Battery The battery is the electrical device in the system that requires the most frequent inspections and thorough maintenance. If the vehicle is not used for some time (1 month or more) the battery needs to be recharged periodically.
  • Page 48 Vespa LX 125 - 150 i.e. Troubleshooting TROUBL - 48...

  • Page 49: Electrical System

    INDEX OF TOPICS ELE SYS LECTRICAL SYSTEM...
  • Page 50 Vespa LX 125 - 150 i.e. Electrical system Key: 1. Magneto flywheel 2. Voltage regulator 3. 12V-10Ah Battery 4. Start-up remote control switch 5. Starter motor 6. Starter button 7. Fuse No. 1 - 20A 8. Fuse No. 2 - 7.5A 9.
  • Page 51 Vespa LX 125 - 150 i.e. Electrical system 20. Turn indicator bulbs 21. Turn indicator switch 22. Turn indicator control device 23. Instrument panel 24. Fuel level transmitter 25. Oil pressure sensor 26. Fuse No. 3 - 10A 27.Immobilizer aerial 28.
  • Page 52 Vespa LX 125 - 150 i.e. Electrical system Components arrangement ELE SYS - 52...
  • Page 53 Vespa LX 125 - 150 i.e. Electrical system 1. Magneto flywheel - Remove the flywheel cov- er, as described in the «Engine» chapter, to reach it. To get access to the connectors, remove the helmet compartment. 2. Voltage regulator - Remove the front central cover to reach it.
  • Page 54 Vespa LX 125 - 150 i.e. Electrical system 7 - 8 - 14 - 15 - 16 -26. Fuses - Remove the battery cover and/or the front central cover to reach them. 11 - 38. Remote controls - Remove the front cen- tral cover to reach it.
  • Page 55 Vespa LX 125 - 150 i.e. Electrical system 25 - 34. Oil pressure sensor - engine speed sensor - To reach it, remove the fan cover cap, as described in ENGINE chapter. 27. Immobilizer aerial- Remove the shield back plate to reach it.

  • Page 56: Ground Points

    Vespa LX 125 - 150 i.e. Electrical system 31 - 32. Engine temperature sensor - fuel injec- tor - Remove the helmet compartment to reach it. 33. H.V. coil - Remove the helmet compartment and undo the two screws indicated to reach it.

  • Page 57: Electrical System Installation

    Vespa LX 125 - 150 i.e. Electrical system There is another ground point "B" on the starter motor. On the left side of the chassis, under the footrest, there is the chassis-engine ground lead "C". Electrical system installation ELE SYS - 57...

  • Page 58: Back Side

    Vespa LX 125 - 150 i.e. Electrical system Back side 1. To the front part 2. To the magneto flywheel 3. To HV coil 4. To the rear lighting devices 5. Chassis ground 6. Start-up remote control switch 7. Fuel level transmitter 8.
  • Page 59 Vespa LX 125 - 150 i.e. Electrical system 1. Rear right turn indicator 2. License plate light 3. To rear light 4. Rear left turn indicator 5. Fuel pump 6. To the fuel level transmitter 7. Diagnostic socket 8. Generator connector 9.
  • Page 60 Vespa LX 125 - 150 i.e. Electrical system 1. Fuse box 2. Start-up remote control switch 3. Battery 4. Fuel pump 5. Fuel level transmitter 6. Injector 7. Engine temperature sensor 8. Injection ECU 9. Start-up motor ground 10.Start-up motor positive terminal 11.Diagnostic socket...
  • Page 61 Vespa LX 125 - 150 i.e. Electrical system 15.To the spark plug 16.chassis - engine ground lead 17.To the front part Conceptual diagrams Ignition 3. 12V-10Ah Battery 7. 20A Fuse 8. 7.5A Fuse 10. Key switch contacts 15. Fuse 15A 23.
  • Page 62 Vespa LX 125 - 150 i.e. Electrical system Battery recharge and starting 1. Magneto flywheel 2. Voltage regulator 3. 12V-10Ah Battery 4. Start-up remote control switch 5. Starter motor 6. Starter button 7. 20A Fuse 8. 7.5A Fuse 9. Stop light bulb 10.
  • Page 63 Vespa LX 125 - 150 i.e. Electrical system Level indicators and enable signals section 3. 12V-10Ah Battery 7. 20A Fuse 8. 7.5A Fuse 10. Key switch contacts 15. Fuse 15A 23. Instrument panel 24. Fuel level transmitter 25. Oil pressure sensor 26.

  • Page 64: Devices And Accessories

    Vespa LX 125 - 150 i.e. Electrical system Devices and accessories 3. 12V-10Ah Battery 7. 20A Fuse 8. 7.5A Fuse 10. Key switch contacts 15. Fuse 15A 16. Fuse 10A 19. Pre-installation for anti-theft device 20. Turn indicators bulb 21. Turn indicator switch 22.
  • Page 65 Vespa LX 125 - 150 i.e. Electrical system Lights and turn indicators 3. 12V-10Ah Battery 7. 20A Fuse 8. 7.5A Fuse 10. Key switch contacts 11. Headlight remote control 13. Light switch 14. Fuse 7.5A 15. Fuse 15A 16. Fuse 10A 17.

  • Page 66: Checks And Inspections

    Vespa LX 125 - 150 i.e. Electrical system Checks and inspections Immobiliser The electronic ignition system is controlled by the control unit with the integrated Immobilizer sys- tem. The immobilizer is an anti-theft system that allows the vehicle to be operated only when it is started with coded keys recognised by the control unit.
  • Page 67 Vespa LX 125 - 150 i.e. Electrical system Remove the connector mounting bracket shown in the photograph and disconnect the connector from the control unit. Check the following conditions: With the key switch set to OFF: • there is battery voltage between terminals 6-26 and terminal 6-chassis ground (fixed power sup- ply).
  • Page 68 Vespa LX 125 - 150 i.e. Electrical system With the ignition key switch at ON check there is battery voltage between the Red-White and Black cables With MIU connector disconnected, check the con- tinuity between the Orange-White cable and pin 7 of the interface wiring.
  • Page 69 Vespa LX 125 - 150 i.e. Electrical system The master and service keys must be used to code the system as follows: - Insert the Master key, turn it to «ON» and keep this position for two seconds (limit values 1 to 3 seconds).

  • Page 70: Diagnostic Codes

    Vespa LX 125 - 150 i.e. Electrical system Diagnostic codes The Immobilizer system is tested each time the key switch is turned from «OFF» to «ON». During this diagnosis phase a number of control unit sta- tuses can be identified and various light codes displayed.
  • Page 71 Vespa LX 125 - 150 i.e. Electrical system • 3 flash code Diagnostic code - 1 flash A one-flash code indicates a system where the se- rial line is not present or is not detected. Check the Immobilizer aerial wiring and change it if necessa-...

  • Page 72: Stator Check

    Vespa LX 125 - 150 i.e. Electrical system This, in its turn, is connected directly to the ground and the battery's positive terminal passing through the 20A protective fuse. The three-phase generator provides good recharge power and at low revs, a good compromise is ach- ieved between generated power and idle stability.

  • Page 73: Voltage Regulator/Rectifier

    Vespa LX 125 - 150 i.e. Electrical system 2) With the battery correctly connected to the circuit, place the multimeter leads between the battery terminals.. 3) Start the engine, ensure that the lights are all out, increase the engine speed and at the same time measure the voltage.

  • Page 74: Horn Control

    Vespa LX 125 - 150 i.e. Electrical system 6. Fuse No. 2 7. Electronic control unit 8. Starter motor 9. Stop buttons 10. Fuse No. 3 11. Starter button WARNING ALL CONTINUITY TESTS MUST BE CARRIED OUT WITH THE CORRESPONDING CONNECTORS DISCONNECTED.
  • Page 75 Vespa LX 125 - 150 i.e. Electrical system 1. Battery 2. Fuse No. 1 3. Key switch contacts 4. Fuse No. 3 5. Horn button 6. Horn WARNING ALL CONTINUITY TESTS MUST BE CARRIED OUT WITH THE CORRESPONDING CONNECTORS DISCONNECTED.
  • Page 76 Vespa LX 125 - 150 i.e. Electrical system 5. Turn indicator control device 6. Turn indicator switch 7. Turn indicator bulbs (12V - 10W) WARNING ALL CONTINUITY TESTS MUST BE CARRIED OUT WITH THE CORRESPONDING CONNECTORS DISCONNECTED. 1) Check that bulbs operate properly.
  • Page 77 Vespa LX 125 - 150 i.e. Electrical system Lights list 1. Battery 2. Fuse No. 1 3. Fuse No. 4 4. Key switch contacts 5. Headlight remote control 6. Fuse No. 5 7. Electronic control unit 8. Daylight running lights, license plate lamp (12V - 5W) and dashboard lighting bulb (12V - 1.2W) 9.
  • Page 78 Vespa LX 125 - 150 i.e. Electrical system HIGH-BEAM /LOW-BEAM LIGHTS LINE 1) Check that bulbs operate properly. 2) Check fuses No. 1 and 4. 3) Check key switch contacts. 4) Check if there is voltage between the Grey cable (30) of the headlight remote control and the ground connection.
  • Page 79 Vespa LX 125 - 150 i.e. Electrical system USES Specification Desc./Quantity Fuses No. 4 - Current rating: 10 A Protected circuits: Battery-powered, lights remote con- trol and antitheft-device pre-installation. Fuses No. 3 - Current rating: 10 A Protected circuits: Live accessories, instrument panel, horn, stop buttons and start-up remote control.
  • Page 80 Vespa LX 125 - 150 i.e. Electrical system - Charge time: 10 to 12 h recommended Minimum 6 h Maximum 24 h 3) Constant current battery charge mode - Charge current equal to 1/10 of the battery rated capacity - Charge time: Maximum 5 h...
  • Page 81 Vespa LX 125 - 150 i.e. Electrical system connected, check the insulation between the two Light Blue-Green and Pink-Yellow cables. Connectors DIAGNOSIS CONNECTOR 1. Not connected 2. Ground (Black) 3. Electronic control unit (Purple-White) PICK-UP CONNECTOR 1. Positive from control unit (Red) 2.
  • Page 82 Vespa LX 125 - 150 i.e. Electrical system FUEL PUMP CONNECTOR 1. Not connected 2. Ground (Black) 3. Not connected 4. Not connected 5.Power supply via solenoid (Black-Green) ELECTRONIC CONTROL UNIT CONNECTOR 1. Injection telltale light (Brown-Black) 2. Not connected 3.
  • Page 83 Vespa LX 125 - 150 i.e. Electrical system ENGINE TEMPERATURE SENSOR CONNEC- 1. Electronic control unit (Sky Blue-Green) 2. Ground (Grey-Green) INJECTOR CONNECTOR 1. Power via remote control (Black-Green) 2. Electronic control unit (Red-Yellow) LAMBDA PROBE CONNECTOR 1. Positive from control unit (Sky blue-Black) 2.
  • Page 84 Vespa LX 125 - 150 i.e. Electrical system INSTRUMENT PANEL CONNECTOR «A» 1. Fuel level indicator (White-Green) 2. High-beam warning light (Purple) 3. Right indicators warning light (Pink) 4. Left indicators warning light (White-Blue) 5. Power permanent supply (White) 6. Oil pressure sensor (Pink-White) INSTRUMENT PANEL CONNECTOR «B»...
  • Page 85 Vespa LX 125 - 150 i.e. Electrical system ANTI-THEFT DEVICE PRE-INSTALLATION CONNECTOR 1. Ground (Black) 2. Left indicators (White-Blue) 3. Right indicators (Pink) 4. Battery powered (Grey) 5. Power permanent supply (White) 6. Not connected 7. Not connected 8. Not connected IMMOBILIZER AERIAL CONNECTOR 1.

  • Page 86: Index Of Topics

    INDEX OF TOPICS ENG VE NGINE FROM VEHICLE...
  • Page 87 Vespa LX 125 - 150 i.e. Engine from vehicle Exhaust assy. Removal - Remove the 2 fixing nuts from the manifold to the head - Remove the Lambda probe from its support and disconnect it. - Release the lambda probe cable from the brack- ets on the fan cover.
  • Page 88 Vespa LX 125 - 150 i.e. Engine from vehicle Removal of the engine from the vehicle CAUTION SUPPORT THE VEHICLE ADEQUATELY. - Disconnect the battery. - Remove the side fairings and footrest left and right terminals. - Remove the helmet compartment.
  • Page 89 Vespa LX 125 - 150 i.e. Engine from vehicle - Disconnect the two connectors of the magneto flywheel cable harness and slide them from the bottom. - Remove the ground lead and the positive cable from the starter motor shown in the figure.
  • Page 90 Vespa LX 125 - 150 i.e. Engine from vehicle ENG VE - 90...
  • Page 91 INDEX OF TOPICS NGINE...

  • Page 92: Automatic Transmission

    Vespa LX 125 - 150 i.e. Engine This section describes the operations to be carried out on the engine and the tools to be used. Automatic transmission Transmission cover - To remove the transmission cover it is necessary to remove the rear plastic cover first by inserting a screwdriver in the corresponding slotted holes.

  • Page 93: Removing The Driven Pulley Shaft Bearing

    Vespa LX 125 - 150 i.e. Engine Removing the driven pulley shaft bearing - Remove the clip from the inside of the cover. - Use the specific tools to remove the bearing from the crankcase. CAUTION USE AN APPROPRIATE REST SURFACE TO AVOID DAM- AGING THE COVER PAINT.

  • Page 94: Removing The Driven Pulley

    Vespa LX 125 - 150 i.e. Engine 020357Y 32x35-mm Adaptor 020412Y 15-mm guide Removing the driven pulley - Remove the spacer, the clutch bell and the whole driven pulley unit. N.B. THE UNIT CAN ALSO BE REMOVED WITH THE DRIVING PULLEY MOUNTED.

  • Page 95: Removing The Clutch

    Vespa LX 125 - 150 i.e. Engine - Using a feeler dial gauge and the magnetic base, measure the bell eccentricity. - Repeat the measurement in 3 positions (Central, internal, external). - If faults are found, replace the bell. Specific tooling...
  • Page 96 Vespa LX 125 - 150 i.e. Engine 020444Y009 wrench 46 x 55 Inspecting the clutch - Check the thickness of the clutch mass friction material. - The masses must not show traces of lubricants; otherwise, check the driven pulley unit seals.
  • Page 97 Vespa LX 125 - 150 i.e. Engine REST THE HALF-PULLEY ON A WOOD SURFACE TO AVOID DAMAGING THE THREADED RINGLET OF THE DRIVEN PULLEY UPON REMOVING IT. Specific tooling 020375Y 28 x 30 mm adaptor 020376Y Adaptor handle 020439Y 17-mm guide...

  • Page 98: Refitting The Driven Pulley

    Vespa LX 125 - 150 i.e. Engine Refitting the driven half-pulley bearing - Assemble a new roller case using the specific punch, fit the bearing with the label facing outward and insert it completely up to the punch on the half- pulley.
  • Page 99 Vespa LX 125 - 150 i.e. Engine 020263Y Driven pulley assembly sheath Recommended products AGIP GREASE SM 2 Grease for the C-ring of the tone wheel Soap-based lithium grease containing NLGI 2 Mo- lybdenum disulphide; ISO-L-XBCHB2, DIN KF2K-20 Inspecting the clutch spring - Measure the length of the spring when it is re- laxed.
  • Page 100 Vespa LX 125 - 150 i.e. Engine - Support the driven pulley spring compressor spe- cific tool with the control screw in vertical axis. - Arrange the tool with the medium length pins screwed in position "C" on the inside.

  • Page 101: Removing The Driving Pulley

    Vespa LX 125 - 150 i.e. Engine 020444Y Tool for fitting/ removing the driven pulley clutch 020444Y011 adapter ring 020444Y009 wrench 46 x 55 Locking torques (N*m) Nut locking clutch unit on pulley 55 to 60 Nm Refitting the driven pulley - Reassemble the clutch bell and spacer.
  • Page 102 Vespa LX 125 - 150 i.e. Engine - Remove the belt and slide the movable half-pul- ley with the relevant bush, taking care of the falling free assembled rollers. - Remove the return rollers plate with the relative guide pads.
  • Page 103 Vespa LX 125 - 150 i.e. Engine - Check the guide shoes for the variator back-plate are not worn. - Check there is no wear in the roller housing, and the surfaces in contact with the belt on either of the pulley halves.
  • Page 104 Vespa LX 125 - 150 i.e. Engine - Refit the plastic cover. Specific tooling 020423Y Driven pulley lock wrench Locking torques (N*m) Transmission cover screws Driven pul- 11 to 13 ley shaft nut 54 to 60 End gear Removing the hub cover...
  • Page 105 Vespa LX 125 - 150 i.e. Engine Removing the hub bearings - Check the state of the bearings being examined (wear, clearance and noisiness). If faults are de- tected, do the following. - Use the specific bearing extractor to remove the three 15 mm bearings (2 in the crankcase and 1 in the hub cover).
  • Page 106 Vespa LX 125 - 150 i.e. Engine With the sectional punch, remove the driven pulley shaft bearing. Specific tooling 020376Y Adaptor handle 020375Y 28 x 30 mm adaptor 020363Y 20-mm guide See also Removing the driven pulley Inspecting the hub shaft...
  • Page 107 Vespa LX 125 - 150 i.e. Engine - Refit the Seeger ring with the opening facing the bearing as shown in the figure and fit a new oil seal flush with the crankcase. Refitting the wheel axle bearing - Heat up the parts using the specific heat gun...
  • Page 108 Vespa LX 125 - 150 i.e. Engine - The three 15 mm bearings must be fitted using the appropriate tools. Refitting the hub bearings - Insert the cover prepared in the crankcase taking care of inserting the gear of the pulley shaft on the intermediary gear.

  • Page 109: Cooling Fan

    Vespa LX 125 - 150 i.e. Engine - Slide the access flap to the spark plug. - Remove the two self threading screws, left and right and the lateral left fixing screw on the crank- case base. - Take off the two caps from the thermal group.

  • Page 110: Removing The Stator

    Vespa LX 125 - 150 i.e. Engine Removing the stator - Remove the magneto flywheel. - Remove the electric terminal of the minimum oil pressure switch. - Remove the two Pick-Up screws and the one for the wiring harness bracket as well as the two stator fixing screws shown in the figure.

  • Page 111: Removing The Starter Motor

    Vespa LX 125 - 150 i.e. Engine Removing the starter motor - Remove the two screws indicated in the figure. - Take the starter motor out of its seat. Removing the flywheel magneto - Lock the rotation of the flywheel using the calliper spanner.
  • Page 112 Vespa LX 125 - 150 i.e. Engine Refitting the flywheel magneto - Fit the flywheel being careful to insert the key properly. - Lock the flywheel nut to the prescribed torque - Check that the Pick-Up air gap is between 0.34 to 0.76 mm.
  • Page 113 Vespa LX 125 - 150 i.e. Engine Removing the timing system drive - Remove the parts listed below first: transmission cover, belt driving pulley, oil pump pulley cover and pinion separator washer. - Remove the tappet cover. - Remove the central screw fastener and the au- tomatic valve-lifter retaining cover, as shown in the figure.

  • Page 114: Removing The Cam Shaft

    Vespa LX 125 - 150 i.e. Engine Removing the cam shaft - Remove the 2 screws and the camshaft retainer shown in the diagram. - Remove the cam shaft. - Remove the pin of the rocking levers from the flywheel side holes.

  • Page 115: Removing The Valves

    Vespa LX 125 - 150 i.e. Engine Removing the valves - Using the specific tool fitted with the element shown in the figure, remove the cotters, the plates and the spring between the valves. Specific tooling 020382Y Valve cotters equipped with part 012...

  • Page 116: Inspecting The Small End

    Vespa LX 125 - 150 i.e. Engine Inspecting the small end - Measure the internal diameter of the connecting rod small end using an internal micrometer. N.B. IF THE DIAMETER OF THE CONNECTING ROD SMALL END EXCEEDS THE MAXIMUM DIAMETER ALLOWED, SHOWS SIGNS OF WEAR OR OVERHEATING REPLACE THE CRANKSHAFT AS DESCRIBED IN THE "CRANKCASE...

  • Page 117: Inspecting The Piston

    Vespa LX 125 - 150 i.e. Engine - Measure the outside diameter of the piston, per- pendicular to the gudgeon pin axis. - Measure 36.5 mm from the piston crown's shown in the figure. N.B. THE PIN HOUSINGS HAVE 2 LUBRICATION CHANNELS.

  • Page 118: Removing The Piston

    Vespa LX 125 - 150 i.e. Engine STANDARD COUPLING CLEARANCE Name Description Dimensions Initials Quantity Top piston ring 0.025 to 0.070 Middle piston ring 0.015 to 0.060 oil scraper 0.015 to 0.060 MAXIMUM ADMITTED CLEARANCE AFTER USE Name Description Dimensions...
  • Page 119 Vespa LX 125 - 150 i.e. Engine Refitting the piston rings - Place the oil scraper spring on the piston. - Refit the oil scraper ring with the join of spring ends on the opposite side from the ring gap and the word 'TOP' towards the crown of the piston.

  • Page 120: Inspecting The Cylinder Head

    Vespa LX 125 - 150 i.e. Engine 020427Y Piston assembly band Inspecting the cylinder head - Using a trued bar check that the cylinder head surface is not worn or distorted. - Check that the camshaft and rocking lever pin bearings show no signs of wear.
  • Page 121 Vespa LX 125 - 150 i.e. Engine - Remove the central screw and the tensioner spring. Check that the one-way mechanism is not worn. - Check the condition of the tensioner spring. - If examples of wear are found, replace the whole unit.
  • Page 122 Vespa LX 125 - 150 i.e. Engine - If the width of the impression on the valve seat or the diameter of the valve guide exceed the speci- fied limits, replace the cylinder head. - Check width of the impression on the valve seat «V»...
  • Page 123 Vespa LX 125 - 150 i.e. Engine 79.6 mm - If the checks above give no failures, you can use the same valves. For best sealing results, it is ad- visable to grind the valves. Grind the valves gently with a fine-grained lapping compound. During grinding, keep the cylinder head in a horizontal position.

  • Page 124: Inspecting The Cam Shaft

    Vespa LX 125 - 150 i.e. Engine Refitting the valves - Lubricate the valve guides with engine oil. - Place the lower caps of the valve spring on the head. - Use the punch to fit the 2 sealing rings one at a time.
  • Page 125 Vespa LX 125 - 150 i.e. Engine - Check there is no wear on the cam shaft retaining plate and its associated groove on the cam shaft. - If any of the above dimensions are outside the specified limits, or there are signs of excessive wear, replace the defective components with new ones.
  • Page 126 Vespa LX 125 - 150 i.e. Engine -Screw the nuts and lock them in a crossed sequence and in 2 or 3 stages to the specific torque. Locking torques (N*m) Locking torque 28 to 30 - Fit the two screws on the outside of the timing chain side and tighten them to the specified torque.
  • Page 127 Vespa LX 125 - 150 i.e. Engine - Refit the spacer on the cam shaft. - Rotate the engine so that the piston is at top dead centre, using the reference marks on the flywheel and the crankcase. - While doing so, fit the chain onto the control cam- shaft pulley and keep the reference 2V in corre- spondence with the reference mark on the head.
  • Page 128 Vespa LX 125 - 150 i.e. Engine Locking torques (N*m) Locking torque 11 to 13 - Insert the chain tensioning screw, together with the spring and washer, tightening it to the prescribed torque. Locking torques (N*m) Locking torque 5 to 6 - Adjust the valve clearance.

  • Page 129: Crankcase - Crankshaft

    Vespa LX 125 - 150 i.e. Engine - Reassemble the driving pulley, the belt and the transmission cover as described in the transmis- sion chapter. Locking torques (N*m) Locking torque 11 to 13 Crankcase - crankshaft - Precautionary remove the following units:...
  • Page 130 Vespa LX 125 - 150 i.e. Engine Splitting the crankcase halves Remove the 11 coupling screws to the crankcase. - Separate the crankcase while keeping the crank- shaft in one of the two halves of the crankcase. Remove the crankshaft.
  • Page 131 Vespa LX 125 - 150 i.e. Engine - Check the radial clearance on the connecting rod. -Check the surfaces that limit the axial free-play are not scored and measure the width of the crank- shaft between these surfaces, as shown in the diagram.
  • Page 132 Vespa LX 125 - 150 i.e. Engine Inspecting the crankshaft alignment To install the crankshaft on the support and to measure the misalignment in the 4 points indicated in figure. - Check that the crankshaft cone, the tab seat, the oil seal capacity, the toothed gear and the threa- ded tangs are in good working order.
  • Page 133 Vespa LX 125 - 150 i.e. Engine Inspecting the crankcase halves - Before proceeding to check the crankcase halves, thoroughly clean all surfaces and oil ducts. - On the transmission side crankcase half, take particular care cleaning the housing and oil ducts...
  • Page 134 Vespa LX 125 - 150 i.e. Engine - Check the main bearing seats that limit axial clearance in the crankshaft show no signs of wear. The dimension between these seats is measured by way of the procedure described previously for measuring the crankshaft axial clearance and di- mensions.

  • Page 135: Main Bearings

    Vespa LX 125 - 150 i.e. Engine - The bushing housings in the crankcase are classified into 2 categories - Cat. 1 and Cat. 2 - just like those for the crankshaft. - The main bushings are subdivided into 3 thickness categories; see the table below: N.B.
  • Page 136 Vespa LX 125 - 150 i.e. Engine - Lubricate the main bushings and insert the crank- shaft in the transmission side crankcase half. - Reassemble both crankcase halves. - Fit the 11 screws and tighten them to the pre- scribed torque.
  • Page 137 Vespa LX 125 - 150 i.e. Engine Conceptual diagrams ENG - 137...

  • Page 138: Oil Pressure Check

    Vespa LX 125 - 150 i.e. Engine Oil pressure check - After removing the cover protections as descri- bed in the "Flywheel" chapter, disconnect the elec- trical connexion of the minimum oil pressure switch and then remove the switch. - With the engine idling at 1650 rpm and the oil temperature at ~90°C, check that the oil pressure...
  • Page 139 Vespa LX 125 - 150 i.e. Engine Removal - Remove the transmission cover and the com- plete drive pulley beforehand - Install the base of the appropriate tool on the oil seal using the screws provided. - Screw the threaded bar onto the base of the tool and extract the oil seal.
  • Page 140 Vespa LX 125 - 150 i.e. Engine - Preassemble the oil seal with the appropriate tool, positioning the screws - Place the sheath over the crankshaft - Insert the tool with the oil seal on the crankshaft until it comes into contact with the crankcase...
  • Page 141 Vespa LX 125 - 150 i.e. Engine - Use the nut to move the base of the tool until you can see end of the oil seal driving stroke - Remove all of the tool components following the procedure in reverse order...
  • Page 142 Vespa LX 125 - 150 i.e. Engine - Remove the central screw with Belleville washer, as shown in the diagram. - Remove the chain with the pulley. - Remove the crankshaft control pinion. - Remove the oil pump acting on the 2 retainers as shown in the figure.
  • Page 143 Vespa LX 125 - 150 i.e. Engine Measure the distance between the outer rotor and the pump body; see figure. Characteristic Admissible limit clearance: 0.20 mm Check the axial clearance of the rotors with a trued bar as reference, as shown in the figure.
  • Page 144 Vespa LX 125 - 150 i.e. Engine Removing the oil sump - Remove the oil filler plug, the transmission cover, the complete drive pulley assembly with belt and the sprocket wheel, as described in the Transmis- sion chapter. - Drain the oil from the sump as described above.
  • Page 145 Vespa LX 125 - 150 i.e. Engine Refitting the oil sump - Refit the by-pass piston in its housing. - Insert the pressure-regulating spring. - Fit a new sump seal. - Refit the sump, taking care to locate the spring in the appropriate recess machined into the inside of the sump.

  • Page 146: Index Of Topics

    INDEX OF TOPICS INJEC NJECTION...
  • Page 147 Vespa LX 125 - 150 i.e. Injection OMPONENT RANSPOSITION Specification Desc./Quantity Instrument panel Throttle body and electronic injection control unit (MIU) Diagnostics socket connector Fuel pump Engine temperature sensor Fuel injector HV coil Engine speed sensor Lambda probe Injection load remote control...
  • Page 148 Vespa LX 125 - 150 i.e. Injection Combustion and ignition are managed on the basis of engine revs and throttle valve opening. Further corrections are made according to the following parameters: - Engine temperature - Intake air temperature - Lambda probe The system implements an idle feeding correction with cold engine through a Stepper motor on a by- pass circuit of the throttle valve.
  • Page 149 Vespa LX 125 - 150 i.e. Injection The control unit is provided with a self-diagnosis system connected to an indicator light in the in- strument panel. Failures are detected and restored by the diag- nostic tester. In any case, when the fault is no longer present,...
  • Page 150 Vespa LX 125 - 150 i.e. Injection C: Fuel system a. Broken fuel pump b. Dirty fuel filter D: Ignition system a. Faulty spark plug b. Broken coil c. Broken shielded cap E: Intake circuit a. Dirty air filter b. Dirty by-pass circuit c.
  • Page 151 Vespa LX 125 - 150 i.e. Injection 7. When washing the vehicle, be careful with the electric components and wiring. 8. When an ignition problem is detected, start the checks from the battery and the injection system connections. 9. Before disconnecting the MIU ECU connector, perform the following steps in the order shown: - Set the switch to «OFF»...
  • Page 152 Vespa LX 125 - 150 i.e. Injection 9. Engine temperature sensor 10.incomplete 11.(+) lambda probe 12.Engine stop switch 13.(+) engine speed sensor 14.(-) fuel injector 15.(-) engine speed sensor 16.Diagnostics output 17.Immobilizer LED 18.Pin short-circuited with pin 26 19.(-) low-beam automatic ignition 20.(-) injection load remote control...

  • Page 153: Troubleshooting Procedure

    Vespa LX 125 - 150 i.e. Injection 2. Speed sensor 3. Engine temperature sensor 4. Immobilizer aerial 5. Stop buttons 6. Fuse No. 1; 20A 7. Key switch contacts 8. Fuse No. 3; 10A 9. Fuse No. 6; 15A 10.Engine control telltale light 11.Fuse No.
  • Page 154 Vespa LX 125 - 150 i.e. Injection Starting difficulties ENGINE START-UP PROBLEMS Possible Cause Operation Presence of faults detected by the self diagnosis Pump relay HV coil Injector Revolution timing sensor Air temperature Engine temperature Start-up speed Starter motor and remote control...
  • Page 155 Vespa LX 125 - 150 i.e. Injection Possible Cause Operation HV coil Injector Revolution timing sensor Air temperature Engine temperature Ignition efficiency Ignition timing Correctness of the parameters Throttle valve position sensor Stepper Engine temperature sensor Intake air temperature sensor...
  • Page 156 Vespa LX 125 - 150 i.e. Injection Possible Cause Operation Injector Revolution timing sensor Air temperature Engine temperature Lambda probe Poor performance at full throttle POOR ENGINE PERFORMANCE AT FULL POWER/ ENGINE IRREGULAR PERFORM- ANCE ON PICKUP Possible Cause Operation...

  • Page 157: Fuel Supply System

    Vespa LX 125 - 150 i.e. Injection Fuel supply system The fuel system circuit includes the electric pump, the filter, the pressure regulator, the electro-injector and the fuel delivery pipes. The electrical pump is located in the tank from which the fuel is pumped and sent to the injector through the filter.
  • Page 158 Vespa LX 125 - 150 i.e. Injection - Undo the fixing screws and slide the injector from the manifold being careful not to damage the seal- ing OR gasket. CAUTION DO NOT DISASSEMBLE THE INJECTOR COMPONENTS. Refitting the injector For refitting, perform the removal operations in re-...
  • Page 159 Vespa LX 125 - 150 i.e. Injection Removing the butterfly valve - Remove the helmet compartment. - Remove the fuel piping clamping screw indicated in the figure. - Remove the fast-release fitting from the injector. - Remove the injector connector.
  • Page 160 Vespa LX 125 - 150 i.e. Injection - Remove the mounting bracket of the throttle con- trol cables undoing the two fixing screws. - Release the cable ends of the throttle body pul- ley. - Remove the throttle body with air cleaner joint, manifold and injector.
  • Page 161 Vespa LX 125 - 150 i.e. Injection Pump supply circuit 1. 12V - 10Ah Battery 2. Fuse No. 6; 15A 3. Fuse No. 1; 20A 4. Key switch contacts 5. 7.5A fuse No. 2 INJEC - 161...

  • Page 162: Electrical Data

    Vespa LX 125 - 150 i.e. Injection 6. Injection load remote control 7. Fuel pump 8. HV coil 9. Fuel injector 10.Lambda probe When switched to "ON", the fuel pump starts to rotate for two seconds and then stops. When the engine starts up, in the presence of rpm timing signal the pump is continuously supplied.
  • Page 163 Vespa LX 125 - 150 i.e. Injection Check efficiency of the injection load remote con- trol, that can be reached by removing the central cover of the shield: check the resistance of the en- ergising coil between pins 86 and 85: 40 to 80 Ohm Apply a voltage of 12V to pins 86 and 85;...
  • Page 164 Vespa LX 125 - 150 i.e. Injection INJEC - 164...
  • Page 165 Vespa LX 125 - 150 i.e. Injection Check the presence of fixed voltage between the grey/black cable of the remote control base and ground. If there is not, check the continuity of the Grey/Black cable between the fuse box (No. 6, 15 A) and the remote control base.
  • Page 166 Vespa LX 125 - 150 i.e. Injection mote control disconnected, that the Black-Purple cable (pin 20 on the interface wiring) is insulated from the ground. Specific tooling 020331Y Digital multimeter Circuit leak test Install the specific tool for checking the fuel pressure, with the pipe fitted with the gauge.
  • Page 167 Vespa LX 125 - 150 i.e. Injection Remove the screw shown in the picture Remove the clip fixing the piping to the filter shown in the picture Separate the lower part of the pump mounting as shown in the picture.
  • Page 168 Vespa LX 125 - 150 i.e. Injection Inspecting the injector circuit 1. 12V - 10Ah Battery 2. Fuse No. 6; 15A 3. Fuse No. 1; 20A 4. Key switch contacts 5. 7.5A fuse No. 2 INJEC - 168...
  • Page 169 Vespa LX 125 - 150 i.e. Injection 6. Injection load remote control 7. Fuel pump 8. HV coil 9. Fuel injector 10.Lambda probe Check the resistance at the injector ends: 14.5 ± 5% Ohm Check efficiency of the fuse No. 6 of 15A injection loads, next to the battery.
  • Page 170 Vespa LX 125 - 150 i.e. Injection Check efficiency of the injection load remote con- trol, that can be reached by removing the central cover of the shield: check the resistance of the en- ergising coil between pins 86 and 85: 40 to 80 Ohm Apply a voltage of 12V to pins 86 and 85;...
  • Page 171 Vespa LX 125 - 150 i.e. Injection INJEC - 171...
  • Page 172 Vespa LX 125 - 150 i.e. Injection Check the presence of fixed voltage between the grey/black cable of the remote control base and ground. If there is not, check the continuity of the Grey/Black cable between the fuse box (No. 6, 15 A) and the remote control base.
  • Page 173 Vespa LX 125 - 150 i.e. Injection Switch to «ON» and check if there is voltage, with injector disconnected and control unit connected, between the Black-Green cable of the injector con- nector and the ground lead With injector disconnected and the injector load...
  • Page 174 Vespa LX 125 - 150 i.e. Injection Specific tooling 020480Y Petrol pressure check set Proceed with the injector seal test. Dry the injector outlet with a blast of compressed air. Activate the fuel pump. Wait for one minute, making sure there are no leaks coming from the injector.
  • Page 175 Vespa LX 125 - 150 i.e. Injection With wiring disconnected from the control unit and connected to the system, check that the sensor resistance between pins 13 - 15 is between 100 and 150 Ohm at an engine temperature of approx- imately 20°...
  • Page 176 Vespa LX 125 - 150 i.e. Injection HT coil 1. 12V - 10Ah Battery 2. Fuse No. 6; 15A 3. Fuse No. 1; 20A 4. Key switch contacts 5. 7.5A fuse No. 2 INJEC - 176...
  • Page 177 Vespa LX 125 - 150 i.e. Injection 6. Injection load remote control 7. Fuel pump 8. HV coil 9. Fuel injector 10.Lambda probe The ignition system is integrated with the injection and it is a high-efficiency inductive type ignition. The control unit manages two important parameters:...
  • Page 178 Vespa LX 125 - 150 i.e. Injection Check efficiency of fuse No. 2 of 7.5A, a 7,5A live control unit power supply, after removing the cen- tral cover of the shield. Check there is voltage between pins 22 and 26 of the interface wiring for around two seconds when switching to «ON».
  • Page 179 Vespa LX 125 - 150 i.e. Injection Check the efficiency of the injection load remote control. Check the resistance of the energising coil between pins 86 and 85: 40 to 80 Ohm Apply a voltage of 12V to pins 86 and 85; make sure that there is continuity between pins 30 and 87 of the remote control.
  • Page 180 Vespa LX 125 - 150 i.e. Injection Check the presence of fixed voltage between the grey/black cable of the remote control base and ground. If there is not, check the continuity of the Grey/Black cable between the fuse box (No. 6, 15 A) and the remote control base.
  • Page 181 Vespa LX 125 - 150 i.e. Injection Zeroing the throttle Resetting the throttle valve position signal (TPS reset) The MIU control unit is supplied with a throttle valve position sensor that is pre-calibrated. Pre-calibration entails regulating the minimum opening of the throttle valve to obtain a certain flow of air under pre-set reference conditions.
  • Page 182 Vespa LX 125 - 150 i.e. Injection Make sure that the throttle valve with the control is supporting the stop screw. Guaranteeing that this position will be kept, send a confirmation for the TPS reset procedure. Reset should be performed in the following cases: - on first fitting.

  • Page 183: Lambda Probe

    Vespa LX 125 - 150 i.e. Injection THE TPS RESET PROCEDURE MUST NOT BE CARRIED OUT WITH A USED THROTTLE BODY BECAUSE POSSIBLE VALVE WEAR AND STOP WEAR FOR THE MINIMUM OPENING MAKE THE AIR FLOW DIFFERENTLY FROM THAT OF PRE-CALIBRATION.
  • Page 184 Vespa LX 125 - 150 i.e. Injection With the engine running at idle speed, check that the voltage oscillates between 0V and 1V With the throttle valve completely open, the volt- age is approx. 1V. During the closing phase, the voltage is approx.

  • Page 185: Index Of Topics

    INDEX OF TOPICS SUSP USPENSIONS...

  • Page 186: Removing The Front Wheel

    Vespa LX 125 - 150 i.e. Suspensions Front suspension This section is devoted to operations that can be carried out on the suspension. Front Removing the front wheel - Support the vehicle adequately. - Loosen the five screws fixing the wheel to the hub.
  • Page 187 Vespa LX 125 - 150 i.e. Suspensions - Remove the wheel hub. - Remove the ball bearing check Seeger ring indi- cated in the picture Extract the ball bearing using the specific tool Specific tooling 001467Y014 Pliers to extract ø 15-mm bearings...
  • Page 188 Vespa LX 125 - 150 i.e. Suspensions - Remove the roller bearing using the specific tool Specific tooling 020376Y Adaptor handle 020456Y Ø 24 mm adaptor 020363Y 20-mm guide - Heat the roller bearing seat with a heat gun - Use the specific tool to introduce and push the...

  • Page 189: Refitting The Front Wheel

    Vespa LX 125 - 150 i.e. Suspensions Refitting the front wheel - Upon refitting, tighten the five screws to the pre- scribed torque. Locking torques (N*m) Wheel rim screws 20 to 25 Handlebar Removal Remove the handlebar cover before carrying out this operation,.
  • Page 190 Vespa LX 125 - 150 i.e. Suspensions Removal After removing the upper seat, lean the vehicle on one side and extract the steering tube completely from the fork. Specific tooling 020055Y Wrench for steering tube ring nut Overhaul Servicing the front suspension-steering assembly,...
  • Page 191 Vespa LX 125 - 150 i.e. Suspensions To remove the second NADELLA, use the tool fit- ted with part 2 instead of part 1, on the side oppo- site the one shown in the figure. N.B. DURING THE REMOVAL OPERATIONS DESCRIBED ABOVE, THE ROLLER BUSHINGS ARE DESTROYED WHEN THE EXTRACTOR IS USED.
  • Page 192 Vespa LX 125 - 150 i.e. Suspensions - Repeat the above operation using the tool with part 16 and part 22, instead of part 4, always fitted to the stem, on the side opposite that indicated in the figure to fit the second wedging washer - roller bushing - sealing ring unit.

  • Page 193: Front Shock Absorber

    Vespa LX 125 - 150 i.e. Suspensions Refitting CAUTION USE NEW ROLLER CASINGS, PIN, SEALING RINGS AND DUST GUARDS FOR REFITTING. When fitting the fork, lubricate with the steering bearing tracks with the recommended grease. Tighten the lower ring nut "A" and the upper ring nut "B"...
  • Page 194 Vespa LX 125 - 150 i.e. Suspensions Removal - Support the vehicle adequately. - Remove the wheel hub. - Loosen the shock absorber lower clamps and re- move the brake calliper shock absorber mounting. - Loosen the screws fixing the front brake pipe re- tainer clamp and the odometer cable in order to reach the upper clamps.
  • Page 195 Vespa LX 125 - 150 i.e. Suspensions Refitting To refit, carry out the removal operations in reverse order, observing the prescribed tightening torques. Locking torques (N*m) shock absorber lower clamping 20 - 27 shock absorber upper clamp 20 to 30...
  • Page 196 Vespa LX 125 - 150 i.e. Suspensions Overhaul - The bracket for the shock absorber -calliper at- tachment has two roller bearings separated one from the other as shown in the photograph - Remove the two roller bearings from the bracket...

  • Page 197: Steering Bearing

    Vespa LX 125 - 150 i.e. Suspensions - Assemble a new roller bearing on the shock ab- sorber side and move it until it stops using the specific tool Specific tooling 020036Y Punch - Suitably hold the brake calliper - shock absorber...

  • Page 198: Removing The Rear Wheel

    Vespa LX 125 - 150 i.e. Suspensions N.B. TO REMOVE THE LOWER SEAT OF THE LOWER STEERING BEARING JUST USE A SCREW- DRIVER AS A LEVER BETWEEN THE SEATING AND THE SLEEVE. Specific tooling 020004Y Punch for removing fifth wheels from headstock...

  • Page 199: Refitting The Rear Wheel

    Vespa LX 125 - 150 i.e. Suspensions - Unscrew the nut fixing the wheel axle and collect the washer. Refitting the rear wheel - To refit, follow the removal steps but in reverse order; be careful to tighten to the prescribed tor- que.
  • Page 200 Vespa LX 125 - 150 i.e. Suspensions Removal - Support the vehicle adequately. - Remove the central tunnel inspection door. - To remove the upper clamp from the chassis, proceed as follows: - Unscrew the pin and collect the washer.
  • Page 201 Vespa LX 125 - 150 i.e. Suspensions - Working on the right side, unscrew the side fixing nut to the chassis and collect the washer. - Working on the left side, remove the pin. - Remove the spoiler terminal from both sides.
  • Page 202 Vespa LX 125 - 150 i.e. Suspensions - Remove the fixing pin to the engine and collect the spacer. - Now the swinging arm is free. - Remove the swinging arm from the vehicle; first release it from the engine side and then from the chassis side.

  • Page 203: Shock Absorbers

    Vespa LX 125 - 150 i.e. Suspensions Refitting - To fit, follow the removal steps but in reverse or- der; be careful to tighten to the prescribed torques. Locking torques (N*m) Part A Part B Part C 33 to 41...

  • Page 204: Centre-Stand

    Vespa LX 125 - 150 i.e. Suspensions Refitting - To fit, follow the removal steps but in reverse order; be careful to tighten to the prescribed torques. Locking torques (N*m) Shock absorber/engine pin torque 33 to 41 N·m Shock absorber/chassis nut torque 20 to 25 Nm...
  • Page 205 INDEX OF TOPICS BRAK SYS RAKING SYSTEM...

  • Page 206: Front Brake Calliper

    Vespa LX 125 - 150 i.e. Braking system Front brake calliper Removal - Remove the front wheel. - Remove the two screws fixing the brake calliper to the mounting bracket, then remove the brake calliper with the pipe from the disc.

  • Page 207: Front Brake Disc

    Vespa LX 125 - 150 i.e. Braking system - Keep the brake pads in contact with the pistons and insert the calliper in the brake disc. - Fix the calliper to the mounting bracket with the two screws with spring washer to the prescribed...
  • Page 208 Vespa LX 125 - 150 i.e. Braking system Removal - Remove the front wheel - Remove the front brake calliper - Remove the hub and the disc operating on the wheel axle nut - Adequately support the hub with the disc and op-...

  • Page 209: Disc Inspection

    Vespa LX 125 - 150 i.e. Braking system Disc Inspection - Remove the front wheel - Use a micrometer to check the disc thickness as shown in the photograph - Repeat the measurement in at least 6 points on the disk...
  • Page 210 Vespa LX 125 - 150 i.e. Braking system evenly. A 0.5 mm thickness difference in the re- sidual friction material is permitted Refitting - Insert the brake pads - Insert the fixing pin being careful to position the clip with the ends towards the bleed screw as in the photo.

  • Page 211: Brake Fluid Level Check

    Vespa LX 125 - 150 i.e. Braking system Front - Remove the rubber cap from the bleed screw. - Insert a rubber pipe in the bleed screw to permit the brake fluid to be recovered. - With the right-hand brake lever, load the system and bring it up to the required pressure.
  • Page 212 Vespa LX 125 - 150 i.e. Braking system when it is fully empty, the level of fluid in the res- ervoir is below the MIN level. N.B. THE LEVEL TENDS TO DROP AS THE BRAKE PADS GET WORN, A MINIMUM LEVEL SHOULD NOT BE REACHED.

  • Page 213: Rear Drum Brake

    Vespa LX 125 - 150 i.e. Braking system Rear drum brake Once the muffler and the wheel have been re- moved, follow these steps: 1.Remove the shoe springs using the specific spanner. 2. Remove the shoe with the aid of a lever.
  • Page 214 INDEX OF TOPICS CHAS HASSIS...

  • Page 215: Instrument Panel

    Vespa LX 125 - 150 i.e. Chassis Rear handlebar cover - Remove the front handlebar cover. - Undo the three screws indicated in figure fixing it to the handlebar, the odometer transmission and the electrical connectors. Instrument panel - Remove the rear handlebar cover.
  • Page 216 Vespa LX 125 - 150 i.e. Chassis Front handlebar cover Proceed as follows: -Remove the rear-view mirrors. - Undo the two screws indicated. - Undo the screw under the headlamp. - Laterally release the handlebar cover end. - Disconnect the electrical terminals and remove the front handlebar cover.
  • Page 217 Vespa LX 125 - 150 i.e. Chassis After removing the front handlebar cover, operate the 4 screws shown in the figure and remove the headlight. Knee-guard - Unscrew the two screws shown in the figure placed under the front central cover.
  • Page 218 Vespa LX 125 - 150 i.e. Chassis - Undo the screw indicated and disconnect the connector. Footrest - Remove the shield back plate. - Remove the side fairings. - Remove the central tunnel inspection door. From both sides, unscrew: - The fixing screw at the back.
  • Page 219 Vespa LX 125 - 150 i.e. Chassis - Remove the footrest. Side fairings - Undo the upper screw and the smallest lower screw. - Detach the seats on the fairing. License plate holder - Remove the side fairings. - Working on both sides, undo the two screws in- dicated.

  • Page 220: Front Mudguard

    Vespa LX 125 - 150 i.e. Chassis - Remove the license plate light. Air filter - Remove the helmet compartment. - Remove the side fairings. - Undo the two indicated clamps to the crankcase. - Undo the two clamps indicated.
  • Page 221 Vespa LX 125 - 150 i.e. Chassis Front central cover - Remove the "PIAGGIO" clip-on badge - Unscrew the screw indicated in the figure - Remove the grille CHAS - 221...
  • Page 222 INDEX OF TOPICS PRE DE DELIVERY...
  • Page 223 Vespa LX 125 - 150 i.e. Pre-delivery Aesthetic inspection Appearance check: - Paintwork - Fitting of plastics - Scratches - Dirt Tightening torques inspection Lock check - Safety locks - Fixing screws Safety locks • Rear shock absorber upper retainer •...
  • Page 224 Vespa LX 125 - 150 i.e. Pre-delivery - Horn CAUTION TO ENSURE MAXIMUM PERFORMANCE, THE BATTERY MUST BE CHARGED BEFORE USE. INADEQUATE CHARGING OF THE BATTERY WITH A LOW LEVEL OF ELECTROLYTE BEFORE IT IS FIRST USED SHORTENS THE LIFE OF THE BATTERY.

  • Page 225: Static Test

    Vespa LX 125 - 150 i.e. Pre-delivery Static test Static control after the test ride: - Restarting when warmed up - Minimum hold (turning the handlebar) - Uniform turning of the steering - Possible leaks CAUTION CHECK AND ADJUST TYRE PRESSURE WITH TYRES AT AMBIENT TEMPERATURE.
  • Page 226 INDEX OF TOPICS TIME...
  • Page 227 Vespa LX 125 - 150 i.e. Time Engine ENGINE Code Action Duration 001001 Engine from chassis - Removal and refit. TIME - 227...
  • Page 228 Vespa LX 125 - 150 i.e. Time Crankcase CRANKCASE Code Action Duration 001133 Engine crankcase - Replacement 001153 Crankcase halves gasket - Replace- ment 002031 Rear wheel hub bearings - Replace- ment TIME - 228...
  • Page 229 Vespa LX 125 - 150 i.e. Time Crankshaft RANKSHAFT Code Action Duration 001117 Crankshaft - Replacement 001099 Flywheel-side oil seal - Replacement TIME - 229...

  • Page 230: Cylinder Assy

    Vespa LX 125 - 150 i.e. Time Cylinder assy. CYLINDER ASSEMBLY Code Action Duration 001002 Cylinder-Piston - Replacement 001107 Cylinder / piston - Inspection / clean- TIME - 230...

  • Page 231: Cylinder Head Assy

    Vespa LX 125 - 150 i.e. Time Cylinder head assy. HEAD ASSEMBLY Code Action Duration 001045 Valves - Replacement 001056 Head gasket - change 001126 Head - Replacement TIME - 231...
  • Page 232 Vespa LX 125 - 150 i.e. Time Rocker arms support assy. ROCKERS MOUNTING UNIT Code Action Duration 001044 Camshaft - Replacement 001148 Rockers valves - Replacement 001049 Valves - adjust TIME - 232...

  • Page 233: Cylinder Head Cover

    Vespa LX 125 - 150 i.e. Time Cylinder head cover EAD COVER Code Action Duration 001089 Head cover - Replacement 001088 Head cover gasket - Replacement 001159 Oil vapour recovery tank - Service 001093 Spark plug - Replacement 001097 Cooling hood - Replacement...

  • Page 234: Chain Tensioner

    Vespa LX 125 - 150 i.e. Time Chain tensioner CHAIN TIGHTENER Code Action Duration 001129 Chain tensioner - Service and Re- placement 001124 By pass lubrication - Replacement TIME - 234...

  • Page 235: Oil Filter

    Vespa LX 125 - 150 i.e. Time Oil filter OIL FILTER Code Action Duration 001123 Oil filter -Replacement 001160 Oil pressure sensor - change 003064 Engine oil - change 001102 Net oil filter - change / Cleaning TIME - 235...

  • Page 236: Flywheel Cover

    Vespa LX 125 - 150 i.e. Time Flywheel cover FLYWHEEL COVER Code Action Duration 001087 Flywheel cover - Replacement 001163 Muffler secondary air connection - Replacement 001161 Secondary air filter - Replacement / Cleaning 001174 SAS valve - Replacement 001164...

  • Page 237: Driven Pulley

    Vespa LX 125 - 150 i.e. Time Driven pulley DRIVEN PULLEY Code Action Duration 001155 Clutch bell - Replacement 001022 Clutch - Replacement 001012 Driven pulley - overhaul 001110 Driven pulley- Replacement TIME - 237...

  • Page 238: Oil Pump

    Vespa LX 125 - 150 i.e. Time Oil pump OIL PUMP Code Action Duration 001051 Belt/Timing chain - Change 001125 Chain guide pads - Replacement 001042 Oil pump - overhaul 001112 Oil pump - change 001130 Oil sump - change...
  • Page 239 Vespa LX 125 - 150 i.e. Time Final gear assy. INAL REDUCTION GEAR Code Action Duration 004125 Rear wheel axle - Replacement 001156 Gear reduction unit cover - Replace- ment 003065 Gear box oil - Replacement 001010 Geared reduction unit - Service...

  • Page 240: Driving Pulley

    Vespa LX 125 - 150 i.e. Time Driving pulley DRIVING PULLEY Code Action Duration 001066 Driving pulley - Removal and refitting 001086 Driving half-pulley - Replacement 001177 Variator rollers / shoes - Replace- ment 001011 Driving belt - Replacement TIME - 240...

  • Page 241: Transmission Cover

    Vespa LX 125 - 150 i.e. Time Transmission cover TRANSMISSION COVER Code Action Duration 001096 Transmission crankcase cover - Re- placement 001135 Transmission cover bearing - Re- placement 001065 Transmission cover - Removal and Refit TIME - 241...

  • Page 242: Electrical Start-Up

    Vespa LX 125 - 150 i.e. Time Starter motor ELECTRICAL START-UP Code Action Duration 001020 Starter motor - Replacement 005045 Starter motor cable harness - Re- placement 001017 Start-up pinion - Replacement 001021 Kick starter - Inspection 008008 Starter spring pack - Replacement...

  • Page 243: Flywheel Magneto

    Vespa LX 125 - 150 i.e. Time Flywheel magneto AGNETO FLYWHEEL Code Action Duration 001109 Cooling fan - Replacement 001173 Rotor - Replacement 001067 Stator - Removal and Refitting 001058 Flywheel - Replacement TIME - 243...
  • Page 244 Vespa LX 125 - 150 i.e. Time Belt cooling duct BELT COOLING PIPE Code Action Duration 001170 Air duct - replacement 001132 Transmission air intake pipe - Re- placement 001131 Transmission air intake - Replace- ment TIME - 244...
  • Page 245 Vespa LX 125 - 150 i.e. Time Carburettor CARBURETTOR Code Action Duration 001082 Carburettor heating resistor - Re- placement 001013 Intake manifold - change 004122 Air cleaner carburettor fitting - Re- placement 001081 Automatic choke - Replacement 001008 Carburettor - Inspection...

  • Page 246: Exhaust Pipe

    Vespa LX 125 - 150 i.e. Time Exhaust pipe MUFFLER Code Action Duration 001009 Muffler - Replacement 001136 Exhaust emissions - Adjustment 001095 Muffler guard - Replacement TIME - 246...

  • Page 247: Air Cleaner

    Vespa LX 125 - 150 i.e. Time Air cleaner AIR CLEANER Code Action Duration 004122 Air cleaner carburettor fitting - Re- placement 001014 Air filter - Replacement / cleaning 001015 Air filter box - Replacement TIME - 247...
  • Page 248 Vespa LX 125 - 150 i.e. Time Frame CHASSIS Code Action Duration 004001 Chassis - Replacement 004023 Shield rim - Replacement 004149 Shield central cover - Replacement 004159 Plates / Stickers - Replacement 004012 Rear side panels - Replacement 004059...
  • Page 249 Vespa LX 125 - 150 i.e. Time Centre-stand STAND Code Action Duration 001053 Stand bolt - Replacement 004004 Stand - Replacement TIME - 249...
  • Page 250 Vespa LX 125 - 150 i.e. Time Footrests OOTREST Code Action Duration 004178 Footrest - Replacement 004078 Front/rear footrest rubber - Replace- ment TIME - 250...

  • Page 251: Rear Cover

    Vespa LX 125 - 150 i.e. Time Rear cover SHIELD BACK PLATE Code Action Duration 004174 Trunk levers - Replacement 004065 Legshield, rear part - Removal and refitting 004081 Top box lid - Replacement 004082 Top box gasket - Replacement...

  • Page 252: Underseat Compartment

    Vespa LX 125 - 150 i.e. Time Underseat compartment HELMET COMPARTMENT Code Action Duration 005046 Battery cover - change 004016 Helmet compartment - Removal and Refitting 001027 Body / air cleaner union - Replace- ment TIME - 252...
  • Page 253 Vespa LX 125 - 150 i.e. Time HELMET COMPARTMENT Code Action Duration 004016 Helmet compartment - Replacement 005046 Battery cover - change 004011 Central chassis cover - Replacement 004071 Battery compartment - replacement TIME - 253...
  • Page 254 Vespa LX 125 - 150 i.e. Time Plate holder LICENSE PLATE HOLDER Code Action Duration 004136 License plate holder mounting - Re- placement 005048 number plate holder - Replacement 005032 number plate light glass - Replace- ment TIME - 254...
  • Page 255 Vespa LX 125 - 150 i.e. Time Mudguard MUDGUARDS Code Action Duration 004002 Front mudguard - change 004009 Rear mudguard - Replacement TIME - 255...
  • Page 256 Vespa LX 125 - 150 i.e. Time Fuel tank FUEL TANK Code Action Duration 004168 Fuel tank cap - Replacement 005010 Tank float - Replacement 004112 Cock-carburettor hose - Replace- ment 004005 Fuel tank - Replacement 004007 Fuel valve - Replacement...

  • Page 257: Rear Shock Absorber

    Vespa LX 125 - 150 i.e. Time Rear shock-absorber REAR SHOCK ABSORBER Code Action Duration 003007 Rear shock absorber - Removal and Refitting TIME - 257...
  • Page 258 Vespa LX 125 - 150 i.e. Time Steering column bearings TEERING FIFTH WHEELS Code Action Duration 003002 Steering fifth wheels - Replacement 003073 Steering clearance - Adjustment 004119 Bearing / upper steering fifth wheel - Replacement TIME - 258...

  • Page 259: Handlebar Covers

    Vespa LX 125 - 150 i.e. Time Handlebar covers ODOMETER - HANDLEBAR COVERS Code Action Duration 004018 Handlebar front section - Replace- ment 004019 Handlebar rear section - Replace- ment 005014 Odometer - Replacement 005038 Instrument panel warning light bulbs...

  • Page 260: Handlebar Components

    Vespa LX 125 - 150 i.e. Time Handlebar components HANDLEBAR COMPONENTS Code Action Duration 004066 Driving mirror - Replacement 002037 Brake or clutch lever - Replacement 002071 Left hand grip - Replacement 003001 Handlebar - Removal and refitting 005017 Stop switch - Replacement...

  • Page 261: Swinging Arm

    Vespa LX 125 - 150 i.e. Time Swing-arm SWINGING ARM Code Action Duration 001072 Engine-chassis connection swinging arm - Replacement TIME - 261...
  • Page 262 Vespa LX 125 - 150 i.e. Time Seat ADDLE Code Action Duration 004003 Saddle - Replacement 004131 Luggage rack mounting - Replace- ment TIME - 262...

  • Page 263: Turn Signal Lights

    Vespa LX 125 - 150 i.e. Time Turn signal lights INDICATOR LIGHTS Code Action Duration 005002 Front headlamp - Replacement 005012 Front turn indicator - Replacement 005067 Front turn indicator bulb - Replace- ment 005008 Headlight bulbs - Replacement 005005...

  • Page 264: Front Wheel

    Vespa LX 125 - 150 i.e. Time Front wheel FRONT WHEEL Code Action Duration 004123 Front wheel - Replacement 003047 Front tyre - Replacement 003037 Front wheel rim - Replacement 003033 Front wheel hub- Replacement 002041 Front brake disc - Replacement...

  • Page 265: Electric Devices

    Vespa LX 125 - 150 i.e. Time EAR WHEEL Code Action Duration 004126 Rear wheel tyre - Replacement 001071 Rear wheel rim - Removal and Refit- ting 001016 Rear wheel - Replacement 002002 Rear brake pads/shoes - Repl. Electric devices...

  • Page 266: Electronic Controls

    Vespa LX 125 - 150 i.e. Time Electronic controls ELECTRIC CONTROLS Code Action Duration 005039 Lights switch - Replacement 005006 Light or turning indicator switch - Re- placement 005040 Horn button - Replacement 005003 Horn - Replacement 005041 Starter button - Replacement...
  • Page 267 Vespa LX 125 - 150 i.e. Time Transmissions TRANSMISSIONS Code Action Duration 002053 Rear brake transmission complete - Replacement 002051 Odometer transmission assembly - Replacement 002049 Odometer cable - Replacement TIME - 267...

  • Page 268: Front Suspension

    Vespa LX 125 - 150 i.e. Time Front suspension FRONT SUSPENSION Code Action Duration 003045 Steering tube - Replacement 003010 Front suspension - Service 003035 Shock absorber mounting and brake calliper - Replacement 001064 Odometer sprocket - Replacement 003044 Shock absorber cover - Replace-...
  • Page 269 Vespa LX 125 - 150 i.e. Time Braking system BRAKING SYSTEM Code Action Duration 002021 Front brake hose - Remov. and Re- fitt. 002007 Front brake shoes/pads - Remov. and Refitt 002039 Front brake calliper - Removal and Refitting 002047...
  • Page 270 Vespa LX 125 - 150 i.e. Time Secondary air box SECONDARY AIR SYSTEM Code Action Duration 001164 Crankcase secondary air connection - Replacement 001161 Secondary air filter - Replacement / Cleaning 001174 SAS valve - Replacement 001163 Muffler secondary air connection -...
  • Page 271 Air filter: 37, 220 Battery: 47, 62, 71, 79 Brake: 206, 207, 209, 211–213 Brake fluid: 211 Carburettor: 245 Checks: 66 Electric: 265 Engine oil: 38 Fuel: 157, 166, 256 Fuses: 78 Headlight: 43, 216 Horn: 74 Hub oil: 36 Identification: 8 Instrument panel: 215 Maintenance: 7, 34...
  • Page 272 Tank: 256 Transmission: 9, 46, 92, 103, 113, 241 Turn indicators: 65 Tyres: 13 Vehicle: 8, 87, 88...

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