Your motorbike is fitted with a chain drive attached to the rear wheel. What do you have to be aware of when tightening the chain?

The selected combination is correct because both points address essential safety aspects when tightening a chain on a motorbike. According to German traffic regulations, maintaining proper chain tension is crucial for vehicle safety and performance.

1. The amount of slack must meet the manufacturer's specifications: This ensures optimal performance and prevents excessive wear on the chain and sprockets, which could lead to mechanical failure.

2. The directional stability of the rear wheel must be secured: Ensuring that the rear wheel's stability is intact is vital for safe handling and preventing loss of control while riding.

Both points contribute to the overall safety and reliability of the motorbike on the road. Neglecting these aspects can lead to accidents or mechanical issues.