The lawn mower features a gasoline engine that rotates the cutting blades. A significant advantage over other engines is the increased power and torque for many hours of work on large areas. Inevitably, this type of engine has some disadvantages such as noisy operation, exhaust emissions, and high cost of use and maintenance.

What is a four-stroke engine and what are its advantages/disadvantages in a lawn mower?

It is an internal combustion engine that operates with an oil and air circulation in four operating cycles.

Advantages:

• Lawn mowers 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 vibration during operation.
• They are less polluting because they do not require mixing oils or lubricants with the fuel.

Disadvantages:

• Because lawn mowers with four-stroke engines have more components and valves, their repairs and maintenance are more expensive.
• Since they derive their power only as the piston rotates every four strokes, this design is less powerful than a similar two-stroke engine.

• Engine: Four-stroke
• Displacement: 79.8 cm³
• Power: 1.2 kW
• Working speed: 3000 min^-1
• Fuel tank capacity: 1 liter
• Cutting width: 40 cm
• Collection container capacity: 45 liters
• Front wheel diameter: 178 mm
• Rear wheel diameter: 203 mm
• Frame material: Plastic
• 1-cylinder four-stroke engine Einhell (OHV)
• Rear wheel drive disengagement
• Central cutting height adjustment, 7 levels
• Elegant, durable plastic housing for excellent maneuverability
• Low weight for good maneuverability
• Large collection basket with level indicator and 2 emptying handles
• Ergonomic folding long handle
• Recommended for lawn areas up to 1,000 m²