Automotive / Parts Accessories
LeoVince 14362E LV One EVO Full System Exhaust Installation Guide
Quick installation and maintenance guide for the LeoVince 14362E LV One EVO full exhaust system for Vespa GTS 300 models. Includes step-by-step fitting instructions, component lists, and safety precautions.
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This document provides technical information and installation instructions for the LeoVince 14362E LV One EVO full exhaust system, designed for various Vespa GTS 300 models. The primary goal is to ensure correct installation and safe operation. Key steps include removing the original exhaust, installing the new manifold and silencer, and reconnecting the Lambda probe. Always ensure the engine and exhaust have cooled completely before starting work to prevent burns or damage to heat-sensitive components.
Installation
- Remove the entire original exhaust system and disconnect the Lambda probe.
- Fit the new manifold into the cylinder seat, using the provided flange and graphite gasket if applicable. Do not fully tighten the nuts initially to allow for proper alignment. Secure to the flanges using the supplied springs.
- Insert the final manifold into the primary manifold and secure it with the provided springs.
- Attach the silencer to the end manifold, verify its orientation, and secure it with the remaining spring.
- Install any necessary spacers, washers, and support brackets as shown in the product drawing, then tighten all nuts and bolts.
- Reconnect the Lambda probe to the new LeoVince manifold.
- Start the engine, allow it to reach operating temperature, and check for any gas leaks. Ensure the exhaust does not interfere with other engine parts.
Maintenance
Periodically check all brackets, fasteners, and rubber components for wear and replace them as needed. The silencer can be cleaned using gasoline, diesel oil, or alcohol; do not use solvents. Some discoloration of the silencer is normal due to heat and material properties. After the first 100 km, it is essential to check and tighten all fasteners as the system settles.
Safety and Restrictions
Any modification or tampering with the exhaust system is strictly prohibited and voids all responsibility from the manufacturer. It is highly recommended that the installation be performed by a qualified professional.
Manufacturer information
LeoVince
Practical help
Common problems
Slight gas leakage during initial use
This is normal as the system settles. Check and tighten all fasteners after approximately 100 km.
Exhaust components interfering with engine parts
Verify that the assembly was performed correctly and that all spacers and brackets are positioned as shown in the technical drawing.
Before use
- Ensure the engine and exhaust surface have cooled completely.
- Verify all components from the list are present.
- Check that the vehicle is in standard trim and good working condition.
- Have necessary tools ready for removing the original system and installing the new one.
Specs in practice
- Weight (Stainless Steel)
- 4.36 kg (compared to 7.02 kg for the stock system).
Images and diagrams
- The technical drawing illustrates the assembly sequence of the manifold, silencer, springs, and spacers.
- Arrows in the photos indicate specific mounting points and the location of the Lambda probe connection.
Model compatibility
- Compatible with Vespa GTS 300 HPE, Racing Sixties, Super, Sei Giorni, Sport, Tech, and Touring models (Type: MD3C).
Manual page author
Michael Turner
Technical manual editor
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