Vespa GTS Super 300 ie 2008 User Manual (English)

Other manuals for Vespa GTS Super 300 ie 2008

Questions and Answers:

M
Marie MitchellAug 2, 2025
Why does my Vespa GTS Super 300 ie 2008 have excessive oil consumption and exhaust smoke?
- S
  Shane ColeAug 2, 2025
  Excessive oil consumption and exhaust smoke in your VESPA Scooter can stem from several issues. These include: * Incorrect valve adjustment: Adjust the valve clearance properly. * Overheated valves: Remove the head and the valves, grind or replace the valves. * Misshapen or worn valve seats: Replace the head unit. * Worn cylinder or piston rings: Replace the piston cylinder assembly or just the piston rings. * Oil leaks: Check and replace the gaskets or restore the coupling seal. * Worn valve oil guard: Replace the valve oil seal. * Worn valve guides: Check and replace the head unit if required.
T
timothy44Aug 7, 2025
What to do if my Vespa GTS Super 300 ie 2008 Scooter has insufficient lubrication pressure?
- S
  stephentylerAug 7, 2025
  If your VESPA Scooter has insufficient lubrication pressure, the following could be the reasons: * The By-Pass remains open: Check the By-Pass and replace if required. Carefully clean the By-Pass area. * Oil pump has excessive clearance: Perform the dimensional checks on the oil pump components. * Oil filter is too dirty: Replace the cartridge filter. * Oil level is too low: Restore the level by adding the recommended oil type.
F
fnicholsAug 12, 2025
What to do if my Vespa GTS Super 300 ie 2008 has insufficient braking?
- P
  Peter DeckerAug 12, 2025
  If your VESPA Scooter has insufficient braking, check the pad wear (minimum 1.5 mm). Inspect the brake discs for wear, scoring, or warping. Ensure the fluid level in the pumps is correct and replace the brake fluid if needed. Bleed the air from the circuits if there is any present. Also, verify that the front brake caliper moves in axis with the disc. Fluid leakage in the hydraulic braking system can also cause insufficient braking; if you find failing elastic fittings, plunger, or brake pump seals, replace them.
A
Alisha CarterAug 17, 2025
Why is there insufficient lubrication pressure in my Vespa GTS Super 300 ie 2008?
- T
  Terry GomezAug 17, 2025
  Insufficient lubrication pressure in your VESPA Scooter may occur if the By-Pass remains open; check it and replace if required, carefully cleaning the By-Pass area. Other potential causes include an oil pump with excessive clearance (perform dimensional checks on the oil pump components), an overly dirty oil filter (replace the cartridge filter), or a low oil level (restore the level by adding the recommended oil type).
G
gilesjulieAug 22, 2025
What to do if the clutch is grabbing or performing inadequately on my VESPA Scooter?
- P
  Paul MitchellAug 22, 2025
  If the clutch on your VESPA Scooter is grabbing or performing inadequately, check that there is no grease on the masses. Ensure that the clutch mass contact surface with the casing is mainly in the center with equivalent characteristics on the three masses. Also, verify that the clutch casing is not scored or worn in an anomalous way.
V
Victoria JacksonAug 27, 2025
What to do if the brake disc on my Vespa GTS Super 300 ie 2008 Scooter is slack or distorted?
- M
  Mary ShermanAug 27, 2025
  Check the brake disc screws are locked and measure the axial shift of the disc with a dial gauge and with the wheel mounted on the scooter.

Vespa GTS Super 300 ie 2008 Specifications

General

Engine Type	Single-cylinder, 4-stroke
Displacement	278 cc
Fuel System	Electronic Fuel Injection
Cooling System	Liquid-cooled
Transmission	Automatic CVT
Front Tire	120/70-12"
Rear Tire	130/70-12"
Seat Height	790 mm
Torque	22 Nm
Front Suspension	Single arm with coil spring
Rear Suspension	Dual shock absorbers
Front Brake	Disc brake
Rear Brake	220 mm disc
Width	755 mm

Summary

Vespa GTS Super 300 ie Characteristics

Vehicle Identification and Dimensions

Engine Specifications and Data

Provides detailed specifications for the engine, including capacity, bore, stroke, torque, and power.

Transmission, Capacities, and Electrical System

Covers transmission details, fluid capacities, and an overview of electrical system components.

Frame, Suspensions, and Brakes

Information on the frame construction, suspension types, and front/rear brake system specifications.

Wheels, Tyres, and Tightening Torques

Specifications for wheels, tyres, tyre pressure, and detailed tightening torque values.

Crankcase, Crankshaft, and Bushing Specifications

Details on crankshaft bushings, couplings, and critical measurements for engine assembly.

Cylinder Head and Valve Train Specifications

Checks and specifications related to the cylinder head, valves, and timing components.

Vespa GTS Super 300 ie Scheduled Maintenance

Scheduled Maintenance Table by Mileage

Table detailing maintenance tasks based on mileage intervals (km x 1,000).

Scheduled Maintenance Table by Time

Table indicating maintenance operations and their estimated time duration.

Spark Plug Maintenance

Air Filter Maintenance

Engine Oil and Filter Change

Procedure for changing engine oil and filter, including recommended oil types and capacity.

Braking System Fluid Level Check

Vespa GTS Super 300 ie Troubleshooting Guide

Engine Performance Issues

Troubleshooting excessive oil consumption, exhaust smoke, and lubrication pressure problems.

Transmission and Brake System Faults

Diagnosing clutch grabbing, slipping, and inefficient braking system issues.

Steering and Suspension Problems

Brake Overheating and Disc Issues

Vespa GTS Super 300 ie Electrical System

Ignition System Overview

Battery Recharge and Starting System

Level Indicators and Signal Systems

Device and Accessory Wiring

Immobiliser System Checks

Detailed checks and troubleshooting steps for the immobiliser system and its components.

Stator and Charging System Checks

Starter Motor and Horn Control Circuits

Turn Signals and Level Indicator Systems

Lights System and Fuses

Engine Removal from Vehicle

Engine Removal Procedure

Detailed steps for safely removing the engine from the scooter, including disconnections.

Vespa GTS Super 300 ie Engine Operations

Automatic Transmission Service

Procedures for servicing the transmission cover, driven pulley, clutch, and related components.

Starter Motor and Flywheel Magneto Service

Cylinder, Head, and Timing System Service

Procedures for servicing the cylinder, head, valves, camshaft, and timing system components.

Crankcase, Lubrication, and Oil Pump Service

Operations related to crankcase splitting, crankshaft inspection, oil pump, and lubrication system.

Vespa GTS Super 300 ie Injection System

MIU Injection System Overview

Description of the integrated injection and ignition system, including its components and function.

Fuel Supply System Components

Details on the fuel supply circuit, including pump, filter, regulator, and injector.

Throttle Valve and Injector Circuit Checks

Procedures for removing the butterfly valve, injector, and related manifold connections.

Troubleshooting Injection System Faults

Precautions and troubleshooting hints for common MIU system issues and electrical power supply.

Coolant Temperature Sensor and Throttle Reset

Lambda Probe Signal Control

Vespa GTS Super 300 ie Suspension System

Front Wheel and Hub Service

Steering Column and Headstock Service

Procedures for removing and overhauling the steering column, headstock, and related parts.

Front Shock Absorber Service

Instructions for removing, refitting, and overhauling the front shock absorber and its bracket.

Rear Wheel and Swing-arm Service

Procedures for removing and refitting the rear wheel and servicing the swing-arm assembly.

Shock Absorber and Centre/Side Stand Service

Vespa GTS Super 300 ie Braking System

Rear Brake Caliper Overhaul

Steps for removing, overhauling, and refitting the rear brake caliper.

Front Brake Caliper Overhaul

Procedure for overhauling the front brake caliper, including piston and seal replacement.

Rear Brake Disc Inspection and Refitting

Front Brake Disc Inspection and Refitting

Front and Rear Brake Pad Service

Steps for removing, refitting, and checking the thickness of front and rear brake pads.

Brake Fluid System Filling and Bleeding

Procedure for filling and bleeding the combined rear brake fluid system.

Front Brake Pump Overhaul

Instructions for overhauling the front brake pump, including diaphragm and plunger checks.

Vespa GTS Super 300 ie Cooling System

System Bleeding Procedure

Steps for bleeding the cooling system to remove air bubbles and ensure proper coolant level.

Thermostat Removal and Check

Vespa GTS Super 300 ie Chassis and Bodywork

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Table of Contents