Vespa GTV 250 i.e. 2007 Service & Parts Manual Set (P/N 633845 EN)

The owner's handbook covers vehicle operation and routine checks, while the service manual supplies workshop procedures and inspection data. The UK parts catalog connects illustrated assemblies with part numbers and quantities for identifying replacement components.

PDF Search, Bookmarks and Diagram Detail

Navigation and wiring labels: Text search works in the owner's handbook and service text, but the parts catalog is not reliably searchable. Service bookmarks are present, with some incorrect destinations. Fine labels in several service wiring diagrams remain difficult to read when enlarged, and the EMS diagram has clipped edges. The additional large-format wiring sheet has faint lines; its small labels require zooming.

One printable, 484-page PDF combines the three publications and the additional wiring sheet. Covers, section dividers, and blank pages are included in the publication totals above.

Engine Overhaul, MIU Diagnosis and Chassis Service

These selected coverage highlights outline the main workshop areas. Other topics include leather-saddle care and pre-delivery inspections.

• Engine repair: Step-by-step procedures for engine removal, crankcase separation, cylinder-head disassembly, valve inspection, piston replacement, and timing-system assembly.

• CVT and final drive: Driven-pulley and clutch disassembly, variator inspection, drive-belt checks, and rear-hub bearing removal and refitting.

• MIU injection: Symptom-based troubleshooting, fuel-pressure and injector-flow tests, temperature-sensor checks, lambda-sensor diagnosis, and throttle-position sensor reset procedures.

• Electrical and immobilizer: Charging-system tests, ignition checks, service-key programming with the master key, immobilizer flash codes, wiring diagrams, and terminal layouts.

• Brakes and suspension: Caliper and master-cylinder overhaul, hydraulic bleeding, steering-column bearing replacement, front shock-absorber removal, and rear swing-arm service.

• Cooling and bodywork: Thermostat testing, coolant bleeding, radiator and fan removal, plus access procedures for body panels, the fuel tank, and saddle-opening components.

The service instructions were written for Piaggio-Gilera dealer workshops and assume knowledge of mechanical principles and vehicle-repair techniques, with the specified equipment and special tools available.

Engine Assembly and Lubrication

Assembly-clearance tables distinguish matched piston and cylinder classes, crankshaft categories, and main-bearing selections. Internal repair coverage extends to piston rings, rocker arms, the camshaft, valve seats, and the automatic valve lifter, with cylinder-base gasket selection and timing-reference illustrations.

The lubrication circuit drawing accompanies oil-pressure diagnosis and inspection of the pump, bypass valve, and crankshaft seals. Incorrect positioning of the transmission-side oil seal can disturb oil-pump chain tension and cause serious engine damage.

CVT inspection data includes clutch-bell eccentricity, pulley-bushing dimensions, clutch-spring limits, and belt-width specifications, supporting component assessment before reassembly.

MIU Fault Finding and Electrical Tests

Troubleshooting tables separate starting difficulties, unstable idle, poor acceleration, full-throttle performance problems, and exhaust backfires. Fuel-delivery tests and sensor-circuit checks help distinguish pressure or injector faults from wiring and input-signal problems.

The procedures call for equipment such as scooter diagnostic tester 020460Y and fuel-pressure test set 020480Y. The TPS section specifically warns against resetting a used throttle body because wear can change airflow from its original calibration.

Immobilizer documentation explains aerial-circuit checks, flash-code interpretation, and service-key coding using the red master key. Diagram examples include Ignition, Battery Recharge and Starting, Lights and Turn Indicators, and the EMS circuit, alongside connector layouts and component-location views.

Brake, Steering and Cooling Work

Brake coverage reaches piston and seal inspection, master-cylinder internal service, pad-wear assessment, and disc-thickness and runout checks. Steering and rear-suspension sections address bearing seats, swing-arm bushings, and silent blocks.

Cooling documentation combines thermostat opening tests with bleeding procedures. Radiator and electric-fan access is covered in the chassis section, together with the surrounding panels and hose connections.

Follow the factory precautions for pressurized fuel lines, battery electrolyte, and hydraulic brake work.

UK Parts Identification

The parts catalog is specifically identified for the UK ZAPM45102 version. Exploded views link component callouts to part numbers and quantities; the alphanumeric index locates numbered parts within the assembly drawings.

Color-specific body components and dated parts applications are distinguished in the tables. These catalog entries support parts selection and should be read separately from the service manual's repair procedures.

A Preview of Valve and Timing Specifications

The engine specification table lists intake valve clearance at 0.10 mm and exhaust clearance at 0.15 mm. Assembly data specifies 5–6 Nm for the timing-chain tensioner central screw.

Cylinder-head tables also provide torque-and-angle tightening data, while the inspection sections supply piston-ring clearances, camshaft wear limits, and bearing-selection dimensions.