LG GTV250 Service Manual

SERVICE STATION MANUAL

633844 IT - 633845 EN -633846 FR - 633847 DE -

633848 ES - 633849 PT - 633850 NL - 633851 EL

Vespa GTV 250 i.e.

SERVICE STATION

MANUAL

Vespa GTV 250 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.

Not all versions shown in this publication are available in all Countries. The availability of single versions

should be checked at the official Piaggio sales network.

in whole or in part is prohibited."

PIAGGIO & C. S.p.A. - After-Sales

V.le Rinaldo Piaggio, 23 - 56025 PONTEDERA (Pi)

SERVICE STATION MANUAL

Vespa GTV 250 i.e.

This service station manual has been drawn up by Piaggio & C. Spa to be used by the workshops of Piaggio-Gilera dealers. It is assumed that the user of this manual for maintaining and repairing Piaggio vehicles has a basic knowledge of mechanical principles and vehicle repair technique procedures. Any significant changes to vehicle characteristics or to specific repair operations will be communicated by updates to this manual. Nevertheless, no mounting work can be satisfactory if the necessary equipment and tools are unavailable. It is therefore advisable to read the sections of this manual relating to special tools, along with the special tool catalogue.

N.B. 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 Sections marked with this 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

TOOLING TOOL

MAINTENANCE MAIN

TROUBLESHOOTING TROUBL

ELECTRICAL SYSTEM ELE SYS

ENGINE FROM VEHICLE ENG VE

ENGINE ENG

INJECTION INJEC

SUSPENSIONS SUSP

BRAKING SYSTEM BRAK SYS

COOLING SYSTEM COOL SYS

CHASSIS CHAS

PRE-DELIVERY PRE DE

TIME TIME

INDEX OF TOPICS

CHARACTERISTICS CHAR

Characteristics Vespa GTV 250 i.e.

This section describes the general specifications of the vehicle.

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 wellventilated, using special extractors if necessary; never let the engine run in an enclosed area. Exhaust fumes are toxic.

- The battery electrolyte contains sulphuric acid. Protect your eyes, clothes and skin. Sulphuric acid is highly corrosive; in the event of contact with your eyes or skin, rinse thoroughly with abundant water and seek immediate medical attention.

- The battery produces hydrogen, a gas that can be highly explosive. Do not smoke and avoid sparks or flames near the battery, especially when charging it.

- Fuel is highly flammable and it can be explosive given some conditions. Do not smoke in the working area, and avoid open flames or sparks.

- Clean the brake pads in a well-ventilated area, directing the jet of compressed air in such a way that you do not breathe in the dust produced by the wear of the friction material. Even though the latter contains no asbestos, inhaling dust is harmful.

Maintenance rules

- Use original PIAGGIO spare parts and lubricants recommended by the Manufacturer. Non-original or non-conforming spares may damage the vehicle.

- Use only the appropriate tools designed for this vehicle.

- Always use new gaskets, sealing rings and split pins upon refitting.

- After removal, clean the components using non-flammable or low flash-point solvent. Lubricate all the work surfaces except the tapered couplings before refitting.

- After refitting, make sure that all the components have been installed correctly and work properly.

- For removal, overhaul and refit operations use only tools with metric measures. Metric bolts, nuts and screws are not interchangeable with coupling members with English measurement. Using unsuitable coupling members and tools may damage the scooter.

- When carrying out maintenance operations on the vehicle that involve the electrical system, make sure the electric connections have been made properly, particularly the ground and battery connections.

CHAR - 2

Vespa GTV 250 i.e. Characteristics

Vehicle identification

Chassis prefix: *ZAPM451020000 ÷ 1001* Engine prefix: M451M ÷ 1001

CHAR - 3

Characteristics Vespa GTV 250 i.e.

Dimensions and mass

WEIGHTS AND DIMENSIONS

Specification Desc./Quantity

Length 1930 mm

Overall width 770 mm Overall height 1170 mm Saddle height 800 mm

Wheelbase 1370 mm

Maximum admitted weight ~ 340 kg

Kerb weight 146 ± 5 kg

GENERAL SPECIFICATIONS

Specification Desc./Quantity

Electronic ignition inductive, high efficiency integrated with the injec-

tion system, with variable timing and separate HV

coil. Fuel supply throttle valve dia. 32 mm and single injector Lubrication Engine lubrication with lobe pump (inside crank-

case) controlled by a chain with double filter: mesh

and paper.

Cooling Forced fluid circulation, with engine driven pump;

3-way thermostat to pump intake.

Exhaust muffler absorption-type exhaust muffler with catalytic con-

verter.

CHAR - 4

Vespa GTV 250 i.e. Characteristics

Specification Desc./Quantity

Transmission Automatic expandable pulley variator with torque

server, V belt, automatic centrifugal dry clutch,

gear reduction unit and transmission compartment

with forced air circulation cooling.

Engine

ENGINE SPECIFICATIONS

Specification Desc./Quantity

Engine single-cylinder four stroke

Bore x stroke 72 x 60 mm

Cubic capacity 244.29 cm³

Compression ratio 10.5 - 11.5 : 1

Idle speed 1700 +/- 100 rpm

Ignition advance (before TDC) variable (integrated into the ignition system)

Spark plug CHAMPION RG 4 PHP

Valve clearance intake: 0.10 mm discharge: 0.15 mm Maximum power 15.7 kW at 8500 rpm (EC Standard). Maximum torque 20.1 Nm at 6500 rpm (EC Standard).

Max. speed 120 km/h

Transmission

Capacities

Fuel tank (including a ~ 2 l reserve) ~ 9.2 l

Cooling system fluid approx. 2.100 ÷ 2.150 l PARAFLU 11FE (Diluted)

TRANSMISSION

Specification Desc./Quantity

Transmission Automatic expandable pulley variator with torque

server, V belt, automatic clutch, gear reduction unit

and transmission housing with forced air circula-

tion cooling

CAPACITY

Specification Desc./Quantity

Engine oil approx. 1300 cc (recommended oil Selenia HI

Scooter 4 Tech)

Rear hub 250 cc ( recommended oil TUTELA MATRIX)

CHAR - 5

Characteristics Vespa GTV 250 i.e.

Electrical system

ELECTRICAL COMPONENTS

Specification Desc./Quantity

1 Spark plug CHAMPION RG4

PHP 2 Battery 12V - 12 Ah 3 Sealed Battery 14Ah 12V - 14 Ah (mainte-

nance free).

4 Generator 380W Rated power 380W

at 8000 rpm

BULBS

Specification Desc./Quantity

1 Low-/ high-beam

light

2 Front position light 5W - 12V (Quantity 3 Instrument Panel

warning lights

4 Front turn indicator

light

5 Rear turn indicator

light

6 Rear tail light 5W - 12V (Quantity 7 Stop Light 16W - 12V (Quantity 8 License Plate Light 5W - 12V (Quantity

55/60 - 12V (Quantity

1.2W - 12V (Quantity

5W - 12V (Quantity

10W - 12V (Quantity

FUSES

Specification Desc./Quantity

1 No.1 - Vehicle main

fuse

2 No. 2 - Live injection

ECU

3 No. 3 - Power to in-

jection load

4 No. 4 - Battery-pow-

ered injection ECU

5 No. 5 - Live accesso-

ries and instrument

panel

6 No. 6 - Live light re-

mote control and

horn

7 No. 7 - Live Headlight

and Saddle Opening

Switch

8 No. 8 - Battery-pow-

ered Accessories

and Instrument panel

30A

7.5 A

10A

7,5A

10A

7.5 A

15 A

10A

CHAR - 6

Vespa GTV 250 i.e. Characteristics

Specification Desc./Quantity

9 No. 9 - Live Stop light

and Starter key

10 No. 10 - Power to tail

light and instrument

panel lighting

Frame and suspensions

Specification Desc./Quantity

Type Unitised body made of stamped plate

Front suspension Single arm suspension (cantilever wheel) fitted

Front shock absorber axial travel 86.5 mm

Rear suspension Engine with swinging fork attached to frame by

Rear shock absorber axial travel 89.5 mm

7.5 A

FRAME AND SUSPENSIONS

with a double-acting hydraulic shock absorber with

coaxial spring

means of an arm with 2 degrees of freedom Pair

of double-acting hydraulic shock absorbers and

coaxial springs with preloading adjustment in 4

positions.

Brakes

BRAKES

Specification Desc./Quantity

Front Ø 220 disc brake and floating calliper with Ø 25

mm twin plungers and hydraulic control (lever on

the far right end of the handlebar)

Rear Ø 220 disc brake and calliper with two Ø 30 mm

counteracting plungers and hydraulic control (lev-

er on the far left end of the handlebar)

Wheels and tyres

WHEELS AND TYRES

Specification Desc./Quantity

Front wheel Alloy rims: 12" x 3.00" Rear wheel Alloy rims: 12" x 3.00"

Front tyre Without inner tube 120/70-12" 51P

Rear tyre Without inner tube: 130/70-12" 62P

TYRE PRESSURE

Specification Desc./Quantity

Front tyre pressure 1.8 bar

Rear tyre pressure 2 bar

Rear tyre pressure - driver and passenger 2.2 bar

N.B.

CHECK AND ADJUST TYRE PRESSURE WITH TYRES AT AMBIENT TEMPERATURE. REGULATE PRESSURE ACCORDING TO THE WEIGHT OF THE RIDER AND ACCESSORIES

CHAR - 7

Characteristics Vespa GTV 250 i.e.

Tightening Torques

GRUPPO STERZO

Name Torque in Nm

Upper steering ring nut 35 ÷ 40 Lower steering ring nut 12 - 14 Handlebar fixing screw 45 ÷ 50 (The two screws must be tightened to the

prescribed torque after having done so with the

rear wheel axle nut. Safety locks: see «Pre-deliv-

ery Operations» )

Fixing screws for handlebar control assembly U-

bolts

FRAME ASSEMBLY

Name Torque in Nm

Engine-swinging arm bolt 64 - 72

swinging arm bolt - body shell 76 ÷ 83

Engine and vehicle side swinging arm junction bolt 33 ÷ 41

Bolt of the Silent block support plate 42 ÷ 52

Centre stand bolt 32 ÷ 40

Side stand fixing bolt 35 ÷ 40

7 ÷ 10

SOSPENSIONE ANTERIORE

Name Torque in Nm

Screw fixing the shock absorber to the shock ab-

sorber - calliper attachment plate

Wheel axle nut 74 ÷ 88

Wheel screw 20 ÷ 25

Screw fixing rear mudguard to steering 5 ÷ 6.5

shock absorber upper clamp 20 ÷ 30

FRENO ANTERIORE

Name Torque in Nm

Brake fluid pump - hose fitting 20 ÷ 25

Brake fluid tube- calliper fitting 19 ÷ 24

Vite serraggio pinza alla piastra attacco ammor-

tizzatore - pinza freno

Disc tightening screw 6 (Apply LOCTITE 242 threadlock, medium

Oil bleed screw 12 - 16

Pad fastening pin 19.6 ÷ 24.5

Viti vaschetta pompa freno 1,5 ÷ 2

REAR SUSPENSION

Name Torque in Nm

Retainer for left shock absorber to crankcase sup-

port plate

Shock absorber upper fitting 20 ÷ 25

Shock absorber lower fitting 33 ÷ 41

Rear wheel shaft 104 ÷ 126

Screw fixing wheel to hub 20 ÷ 25

20 ÷ 27

24 ÷ 27

strength)

20 ÷ 25

CHAR - 8

Vespa GTV 250 i.e. Characteristics

Name Torque in Nm

Screws for muffler - shock absorber support arm

on engine

FRENO POSTERIORE

Name Torque in Nm

Brake fluid pump - hose fitting 20 ÷ 25

Brake fluid pipe-calliper fitting 20 ÷ 25

Rear disc tightening bolt 11 ÷ 13

Oil bleed screw 12÷16

Calliper to engine tightening screw 20 ÷ 25

Viti vaschetta pompa freno 1,5 ÷ 2

Vite accoppiamento pinza 30 ÷ 33 Nm

Name Torque in Nm

Muffler heat guard fixing screw 4 ÷ 5 Screw for fixing muffler to the support arm 20 ÷ 25 Lambda probe clamp on exhaust manifold 40 ÷ 50

Exhaust manifold-muffler joint clamp 12 ÷ 13

Manifold - muffler diaphragm tightening clamp 16 ÷ 18

20 ÷ 25 (The two screws must be tightened to the

prescribed torque after having done so with the

rear wheel axle nut. Safety locks: see «Pre-deliv-

ery Operations» )

MUFFLER

LUBRICATION

Name Torque in Nm

Hub oil drainage plug 15 ÷ 17

Oil filter on crankcase fitting 27 ÷ 33

Engine oil drainage plug/mesh filter 24 ÷ 30

Oil filter 4 ÷ 6

Oil pump cover screws 7 ÷ 9

Screws fixing oil pump to the crankcase 5 - 6

Oil pump control crown screw 10 ÷ 14

Oil pump cover plate screws 4 ÷ 6

Oil sump screws 10 ÷ 14

Minimum oil pressure sensor 12 ÷ 14

CYLINDER HEAD

Name Torque in Nm

Spark plug 12 ÷ 14

Head cover screws 6 ÷ 7

Nuts fixing head to cylinder 7±1 + 10±1 + 270°

Head fixing side screws 11 ÷ 12 Nm

Starter ground screw 7 ÷ 8.5

Tappet set screw lock nut 6 ÷ 8

Inlet manifold screws 11 ÷ 13

Timing chain tensioner slider screw 10 ÷ 14

Starter ground support screw 11 ÷ 15

Timing chain tensioner support screw 11 ÷ 13

Timing chain tensioner central screw 5 - 6

Camshaft retention plate screw 4 ÷ 6

CHAR - 9

Characteristics Vespa GTV 250 i.e.

TRANSMISSION

Name Torque in Nm

Belt support roller screw 11 ÷ 13

Clutch unit nut on driven pulley 45 ÷ 50

Drive pulley nut 75 ÷ 83

Transmission cover screws 11 ÷ 13

Driven pulley shaft nut 54 ÷ 60

Rear hub cap screws 24 ÷ 27

FLYWHEEL

Name Torque in Nm

Flywheel cover screw 11 ÷ 13

Stator assembly screws 3 - 4 (Apply LOCTITE 242 medium-strength

threadlock)

Flywheel nut 94 - 102 Nm

Pick-Up clamping screws 3 ÷ 4

Screw fixing freewheel to flywheel 13 ÷ 15

CRANKCASE AND CRANKSHAFT

Name Torque in Nm

Internal engine crankcase bulkhead (transmis-

sion-side half shaft) screws

Engine-crankcase coupling screws 11 ÷ 13

Starter motor screws 11 ÷ 13

Crankcase timing cover screws 3.5 - 4.5 (Apply LOCTITE 242 medium-strength

Name Torque in Nm

Water pump rotor cover 3 ÷ 4

Thermostat cover screws 3 ÷ 4

Bleed screw: 3

Overhaul data

Assembly clearances

4 ÷ 6

threadlock)

COOLING

CHAR - 10

Vespa GTV 250 i.e. Characteristics

Cylinder - piston assy.

ENGINE COUPLING CATEGORY

Name Initials Cylinder Piston Play on fitting

Cylinder M 72.01 ÷ 72.017 71.953 ÷ 71.960 0.050 - 0.064 Cylinder N 72.017 ÷ 72.024 71.960 ÷ 71.967 0.050 - 0.064

Piston O 72.024 ÷ 72.031 71.967 ÷ 71.974 0.050 - 0.064 Piston P 72.031 ÷ 72.038 71.974 ÷ 71.981 0.050 - 0.064

Crankcase - crankshaft - connecting rod

CRANKSHAFT

Titolo Durata/Valore Testo Breve (< 4000

car.)

Crankshaft Crankshaft to crankcase

axial clearance

Crankshaft to crankcase axial clearance

Indirizzo Immagine

CHAR - 11

Characteristics Vespa GTV 250 i.e.

CRANKSHAFT/ CRANKCASE AXIAL CLEARANCE

Name Description Dimensions Initials Quantity

Half-shaft, trans-

mission side

Flywheel-side half-

shaft

Connecting rod 18 -0.10 -0.15 C D = 0.20 - 0.50

Spacer tool 51.4 +0.05 E D = 0.20 - 0.50

16.6 +0-0.05 A D = 0.20 - 0.50

16.6 +0-0.05 B D = 0.20 - 0.50

Slot packing system

Characteristic

Compression ratio

10.5 ÷ 11.5 : 1

CHAR - 12

Vespa GTV 250 i.e. Characteristics

Measurement "A" to be taken is a value of piston re-entry, it indicates by how much the plane formed by the piston crown falls below the plane formed by the top of the cylinder. The further the piston falls inside the cylinder, the less the base gasket to be applied (to recover the compression ratio) and vice versa.

N.B.

MEASUREMENT "A" MUST BE TAKEN WITHOUT ANY GASKET FITTED BETWEEN THE CRANKCASE AND CYLINDER AND AFTER RESETTING THE GAUGE, EQUIPPED WITH A SUPPORT, ON A GROUND PLANE

ENGINE 250 SHIMMING

Name Measure A Thickness

shimming 3.70 - 3.60 0.4 ± 0.05 shimming 3.60 - 3.40 0.6 ± 0.05 shimming 3.40 - 3.30 0.8 ± 0.05

CHAR - 13

Characteristics Vespa GTV 250 i.e.

Products