Regular maintenance and correct operation are required to ensure the normal operation of the gear system of the beach buggy. Here are some key steps and suggestions:

1. Regular inspection: Regularly inspect all components of the gear system, including gears, bearings, shafts, and differentials, to detect any signs of wear, cracks, looseness, or other damage.

2. Lubrication: According to the manufacturer's recommendations, regularly add appropriate lubricating oil to the gear system. Good lubrication can reduce wear and improve the lifespan and efficiency of gears.

3. Cleaning: Keep the gear system clean and remove any accumulated dirt, mud, or other pollutants. These substances may affect the performance and lifespan of gears.

4. Fastener inspection: Check all fasteners, such as bolts, nuts, and screws, to ensure they are securely fastened and not loose. Loose fasteners may cause component displacement or damage.

5. Gear clearance inspection: Check if the gear clearance is within the manufacturer's recommended range. Excessive gaps may lead to noise and reduced efficiency.

6. Replace damaged parts: If any damaged parts are found, such as worn gears or damaged bearings, they should be replaced immediately.

7. Follow the operating instructions: Use the beach buggy according to the manufacturer's operating instructions to avoid excessive load or improper operation, which can cause unnecessary wear and tear to the gear system.

8. Avoid sudden acceleration and braking: Sudden acceleration and braking can cause additional pressure on the gear system, increasing wear and tear.

9. Regular maintenance: Perform regular maintenance according to the manufacturer's recommendations, including replacing lubricating oil and gear oil, as well as inspecting all components of the gear system.

10. Professional maintenance: If unsure how to inspect or maintain the gear system, seek the help of professional maintenance personnel.

By following the above steps, the normal operation of the gear system of the beach buggy can be ensured, its service life can be extended, and the performance of the vehicle can be maintained.