Knife blade Einhell 3420021

The Einhell 3420021 knife blade is a replacement cutting component intended for use with compatible scarifiers. Measuring 505 mm in width and 200 mm in depth, the blade is made to remove moss, thatch and other organic build-up from lawns to restore grass ventilation and improve surface condition. It fits scarifier models designed for this blade geometry and contributes to consistent working results when maintained and installed correctly.

Advantages

The blade provides a precise cutting edge across a wide working width, enabling efficient removal of lawn debris in fewer passes. Constructed from durable materials, it resists wear under normal use and maintains cutting performance over time. Its dimensions are matched to specific scarifier units to ensure stable mounting and consistent operation.

Suitable for

• Removing moss and thatch from home lawns
• Restoring lawn surface ventilation and drainage
• Routine seasonal lawn maintenance
• Replacement of worn or damaged scarifier blades

Key specifications

• Working width: 505 mm
• Blade depth: 200 mm
• Intended use: scarifier cutting/knife blade for moss and thatch removal
• Material: wear-resistant metal suitable for cutting organic lawn debris

How to use

Before installation, disconnect power to the scarifier and follow the manufacturer’s instructions for safe replacement of cutting parts. Remove the scarifier’s cover or access panel to reach the cylinder or mounting shaft, then unfasten the retaining hardware securing the worn blade. Align the replacement blade so the cutting edge and mounting holes match the shaft orientation and secure it with the original fasteners to the recommended torque. After installation, check that the blade rotates freely without contact with housing parts and perform a short test run at low speed to confirm correct fit and balance.

Usage recommendations

For effective and safe operation, use the blade with compatible scarifier models and maintain a regular inspection routine: check for bent or chipped edges, remove debris after each session, and replace the blade when signs of excessive wear appear. Observe all safety guidelines of the scarifier manufacturer, wear appropriate protective equipment, and avoid using the blade on hard surfaces or where it may contact stones or metal objects.

Keywords: Einhell knife blade, scarifier blade, lawn knife blade, 505 mm blade, 200 mm depth, moss removal, thatch removal, garden equipment accessory.