GB/T 3883.403-2017Safety of motor-operated hand-held, transportable and garden tools—Part 4: Particular requirements for walk-behind and hand-held lawn trimmers and lawn edge trimmers (English PDF)

1.1

Addition:

This part is applicable to walk-behind and handheld lawn trimmers and lawn edge trimmers, they have cutting element with non-metal fiber rope or free turning non-metal cutting means and is used for mowing operation by the standing operator at kinetic energy of less than or equal to 10J, and their AC and DC rated voltage shall be less than or equal to 250V and 75V respectively.

Note: The calculation method of kinetic energy with regard to this part is specified in 21.103.

This part is not applicable to:

——Cutting means is different from the one of the above-mentioned scissor type lawn trimmer and lawn edge trimmer;

——Lawn trimmer and lawn edge trimmer with collecting device;

——Self-propelled lawn trimmer and lawn edge trimmer.

3.101 handheld trimmer

tool gripped by hands and can be assisted by wheel, pulley, shoulder strap, etc., which cannot be kept in the operating position without being gripped by an operator

3.102 walk-behind trimmer

tool supported by the ground and controlled by walking operator behind it, which can be kept at the operating position without being gripped by an operator

3.103 lawn trimmer

a lawn trimming tool whose cutting means rotates on the plane approximately parallel to the ground

3.104 lawn edge trimmer

a lawn trimming tool whose cutting means rotates on the plane approximately vertical to the ground

3.105

cutting means mechanical device used for providing cutting operation, which contains one or more cutting elements rotating around the axis perpendicular to the cutting face and cutting depending on high-speed impact

3.106 cutting element

single non-metal fiber rope or single turning non-metal cutting means

3.107 cutter head

support of cutting element

3.108

cutting means control means operated by operator's hands or fingers and used for controlling the motion of cutting means

3.109 no-load

operation of a tool equipped with new cutting means under rated voltage, which shall cut the extensible single fiber rope into one whose length is 5mm less than the maximum cutting length

5.17

Addition:

The mass of tool shall include that of auxiliary handle, excluding that of shoulder strap (if any).

7.1

Replacement:

The tool shall be of type II or type III.

Inspect via observation and corresponding tests.

7.2

Replacement:

Type II walk-behind lawn trimmers and lawn edge trimmers or those with type II components shall at least be of type IPX4.