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Mini-trenchers, which are designed to install dog fencing, low-voltage lighting, drain lines, irrigation lines and more, can cut anywhere from seven to 18 inches deep.

There are three basic types of machines on the market today: the disc-type machine, which uses a large wheel with teeth mounted on it to cut the trench; the chain-type with replaceable teeth much like its larger kin; and the blade- or rotor-type, which uses, as you might expect, a replaceable blade.

Following are some mini-trenchers that are available to the rental market today.

Barreto 912 Trencher
The 912 self-propelled trencher is powered by a 9-hp engine and offers a 12-in. digging depth.

• Hydraulically operated boom and digging chain
• Freewheeling hubs on both sides
• Pivot system keeps the pivot-bushing out of the dirt
• Half the weight of standard trenchers
• Small enough to fit into tight spaces and through small gates

Little Beaver Kwik-Trench Earth Saw
The Kwik-Trench Earth Saw makes clean, narrow trenches and deposits soil on one side to minimize backfill and clean up.