This is an internal combustion engine that operates with an oil and air circulation in four operating cycles.
Advantages:
Brush cutters with four-stroke engines do not require additional oil.
- They consume fuel only once every four strokes, making them a more economical choice.
- They are built to withstand more wear and tear.
- They produce less noise and vibrations during operation.
- They are less polluting because they do not require mixing oils or lubricants with the fuel.
Disadvantages:
- Due to the fact that brush cutters with four-stroke engines have more components and valves, their repairs and maintenance are more expensive.
- Since they get their power only as the piston rotates every four strokes, this design is less powerful than a brush cutter with a similar two-stroke engine.