IMAYCC Bike Engine Kit Installation Steps: 1. Attach the sprocket assembly to the rear wheel of the bike. All parts are installed on the side without the original bike chain. Please keep the original bike chain and do not make any changes. Install on the clamping rubber on the rear wheel axle first (no cut), then on the sprocket, keeping the concave side of the sprocket tight against the outside of the clamping rubber. Install the other outer clamping rubber (with cut) on the rear axle (inside of the steel wheel spokes). Keep both rubbers tightly clamped to each side of the steel spokes. Then attach the large and small cleats tightly to the cleats (inside of the steel wheel spokes) and screw the sprocket assembly tightly to the rear wheel. Please take care to keep the pulsation between the radial and axial lines of the sprocket and the rear axle no more than 1 mm. 2. Secure the motor to the bike frame. Align the crankcase circle with the bike frame and secure it. The centerline of the cylinder is usually tilted forward about 20 degrees. 3. Fix the chain and adjust the slackness with idler wheel. 4. Fix the protective case. 5. Fix the vent pipe. 6. Fix the gas pedal control on the right side of the bike. Fix the clutch control on the left hand side of the bike. 7. Fix the fuel tank on the cross member of the bike and connect the fuel pipe to the carburetor inlet.