Installation Instructions for Intake Manifold for ET4 125 150 Scooter Models (1999 to 2002)

Tools and Materials Needed:

1. Basic Tools:

   • Screwdriver set (Flathead and Phillips)
   • Socket wrench with metric sockets (10mm, 12mm)
     -Pliers
     -Torque wrench

2. Additional Items:

   • Replacement Intake Manifold (Compatible Parts: 485587, 100520050)
   • Gasket or sealant (if not included with the new manifold)
     -Clean cloth or paper towels
   • Engine oil (for lubricating bolts if necessary)

Installation Steps:

1. Preparation:

   • Ensure the scooter is on a stable, flat surface.
   • Turn off the engine and disconnect the battery to prevent any electrical issues.

2. Remove the Old Intake Manifold:

   • Locate the intake manifold that needs to be replaced.
   • Use the socket wrench to remove bolts and screws securing the old manifold.
   • Carefully detach the manifold from the engine, taking care not to damage any surrounding components.

3. Clean the Installation Area:

   • Use a clean cloth to wipe down the mating surfaces on the engine where the new intake manifold will be installed.
   • Ensure that there are no old gasket remnants or debris on the surface.

4. Install the New Intake Manifold:

   • Position the new intake manifold correctly on the engine.
   • If using a gasket, place it appropriately between the manifold and the engine.
   • Secure the manifold by tightening the bolts and screws with the torque wrench to the manufacturer's specifications.

5. Reconnect Components:

   • Reattach any components that were removed during the initial disassembly, ensuring all connections are secure.

6. Final Checks:

   • Reconnect the battery and visually inspect all connections to ensure everything is properly installed.
   • Start the engine and let it idle to check for any leaks or unusual noises.

7. Test Ride:

   • Take a short test ride to ensure optimal performance and that the installation was successful.

Safety Precautions:

• Always wear safety goggles and gloves during installation to protect yourself.
• Make sure the engine is completely cool before starting the installation process.

By following these instructions and utilizing the required tools, you can easily replace the intake manifold on your ET4 125 150 scooter model. Enjoy your enhanced engine performance!