Red Seal Motorcycle Technician Practice Exam

Which component is critical to inspect for functionality in a cush drive?

1. The rear wheel bearings

2. The chain tension

3. The cush drive rubber or springs

4. The throttle cable condition

The correct answer is: The cush drive rubber or springs

The cush drive is an important component in motorcycle drivetrain systems, designed to absorb shock and vibrations that occur during acceleration and deceleration. Inspecting the cush drive rubber or springs is critical because these elements are responsible for cushioning the shocks transmitted from the engine to the rear wheel. Over time, these components can wear out, crack, or lose their elasticity, leading to a harsh ride, excessive wear on other drivetrain components, and potential damage. When the cush drive is functioning properly, it allows for smoother power transfer and helps protect the drivetrain from excessive stress. If the rubber or springs are found to be in poor condition, replacing them is essential to maintain ride quality and prevent further issues that could arise from excessive vibrations and shocks. The functionality of the cush drive directly impacts overall safety and performance, making it a key inspection point during maintenance. Other components mentioned, such as rear wheel bearings and chain tension, are also important for motorcycle performance and safety. However, they do not play the same critical role as the cush drive in terms of shock absorption and comfort while riding. The throttle cable condition is vital for control, but it does not affect the cush drive's purpose or performance.