Installation Instructions for 66mm and 66.5mm Large Diameter Piston Kit for 150cc 4-Stroke Motorcycles

Tools Required:

1. Socket Set: A complete socket set, including ratchet and extensions, to remove and install bolts.
2. Torque Wrench: To ensure proper torque specifications are met during installation.
3. Piston Ring Compressor: To properly install piston rings without damaging them.
4. Screwdriver: Flathead and Phillips screwdrivers for various screws.
5. Pliers: To grip and hold small parts during installation.
6. Engine Oil: For lubricating the new piston and cylinder walls before installation.
7. Cleaning Supplies: Rags, brushes, and solvents to clean the engine components.
8. Gasket Scraper: To remove any old gaskets if necessary.
9. Measuring Tools: Calipers to ensure proper fit if required.
10. Safety Gear: Gloves and goggles to protect yourself during the installation process.

Installation Steps:

1. Prepare the Workspace: Ensure your workspace is clean and organized.
2. Remove the Engine Cover: Use the socket set to remove the engine cover and access the cylinder.
3. Take Out the Old Piston: Carefully remove the old piston, ensuring you keep all components organized.
4. Clean the Cylinder: Use cleaning supplies to remove any debris or old gasket material from the cylinder.
5. Lubricate the New Piston: Apply a small amount of engine oil to the new piston and the walls cylinder.
6. Install Piston Rings: Use the piston ring compressor to carefully install the piston rings onto the new piston.
7. Insert the New Piston: Gently place the new piston into the cylinder, ensuring it is aligned properly.
8. Attach the Piston Pin: Insert the 15mm piston pin to secure the piston in place.
9. Reassemble Engine Components: Replace the engine cover and any other components you removed earlier.
10. Torque Specifications: Use the torque wrench to tighten bolts according to the manufacturer's specifications.
11. Double-check Connections: Ensure everything is tightened and connected properly.
12. Test the Engine: Start the engine and check for any leaks or unusual noises.

Final Notes:

• Follow all safety precautions during the installation.
• If you are unsure about any step, consult with a professional mechanic or refer to the motorcycle's service manual.
• Enjoy your enhanced riding experience with improved performance!

By following these instructions and using the right tools, you can successfully install the 66mm or 66.5mm Large Diameter Piston Kit in your motorcycle. Happy riding!