Brush cutters are also known as clearing saws and are widely used to prune weeds, smaller foliage, and shrubs in gardens. For various applications, brush cutters are used along with different trimmer heads. Brush cutters usually consist of the following components:
a) A distinct cutting head
b) A pole for electricity/power transmission
c) A power unit.
Power units are of three types:
- Two or four-stroke gas engines
- Power units powered by electric motors fastened to mains cord
- Cordless electric motors which run on rechargeable batteries.
Brush cutter shafts are similar to line trimmers and have a curved shape. Some advanced brush cutters have a straight shaft equipped with a gearbox at the cutting end. Cutting heads of brush cutters have circular saw blades. All popular brush cutter models permit fitting of other cutting heads such as bump feed and fixed line heads.
Choosing the right brush cutter depends upon a variety of factors such as worksite environment, topography, and the vegetation which needs to be cut. Over a period of time, brush cutters have evolved into superior cutting machines for trimming grass, weed, and shrubs. For cutting lawns, horizontal drum cutters are the safest bet. Factors such as brush thickness and terrain dictate cutter choice to a greater extent. For flat surfaces, rotary brush cutters are recommended. Rotary cutters have their share of disadvantages. These cutters leave behind a trail of cut brush on the ground which needs further cleaning.
Things to be kept in mind while starting a brush cutter:
a) Operate the brushcutter in a properly ventilated area
b) Advisable to use choke if the engine isn't warming up
c) Position yourself properly on a sound and secure footing
d) Ensure cutting attachments are adequately attached to the brush cutter
Use heavy duty and water-resistant safety gloves to protect your hand. Wear safety glasses to minimize eye injury risks.