Petrol scarifiers with free-swinging blades can be considered the best lawn scarifiers on the market. The petrol engine guarantees long running time and an area coverage up to 3000 mq.
The free-swinging blades consist of a fixed part attached to the rotor and a swinging part held in position by the centrifugal force of the rotor itself. This technical feature improves blade performance and therefore scarifying itself: the lawn will better absorb all the nutrients, nitrogen and oxygen it needs to grow and stay thick and lush.
Free-swinging blades are also ideal on hard and uneven terrain with stones and clods since they better absorb accidental impacts. This is because, due to their structure, these blades retract and absorb shocks while remaining intact; they allow you to never stop your work and you do not need to replace broken blades, as it may happen with fixed blades. The quality of the blade material is superior since they are made of high-strength hardened steel. These features are those of the best scarifier.