A walk-behind trenching implement has a side mounted rotary trenching tool for
creating a profiled trench into the surface of the earth, which can also be used
as an implement to edge landscape beds. The trenching implement is powered by an
engine that delivers rotational power in an unbalanced manner to the wheel adjacent
to the rotatable trenching tool. The wheel opposite to the trenching tool is can
be non-powered to freely rotate as the implement is moved across the surface of
the ground, or braked to unbalance power delivery through a differential. This
unbalanced propulsion drive induces a skewing action into the operation of the
implement that counterbalances the opposite skewing action resulting from the operation
of the trenching tool to provide a more smoothly operating implement. A trenching
tool having a configuration conducive to profile modification allows flexibility
in the desired shape of the trench being formed.
