PRODUCT DESCRIPTION SPECIFICATIONS Engine Options Model 712MT: Robin 6HP (standard) Model 712MT: Honda GX200 (optional for additional price) Ground Speed Digging Chain Speed: 200 fpm Dimensions Trench Depth: 12″ or 18″ Trench Width: 4″ or 5″ Boom End to Handlebar Length: 71.25″ Transport Width: 30.5″ Transport Height: 43″ Wheel Base: 25.25″ Weight: 400 lbs. Boom and Chain Options 12″ Cup Chain (standard) 12″ or 18″ depths 4″ or 5″ widths Cup Chain, Shark Chain, or Combo Chain PRODUCT DESCRIPTION Key Features Easy to use and understand controls Built for the rental industry Hydraulic chain drive forward and reverse Hydraulic automatic wheel drive forward and reverse Chain will not work when wheels are in forward position Manual boom lift with three preset positions Hydraulic oil cooler allows for a smaller resevoir Free wheeling hubs allows unit to be moved without engine running Ideal for sprinkler systems, dog fences, electrical lines, and other shallow applications Designed for the do-it-yourselfer How the Automatic Wheel Drive Works: This new 712 Micro Trencher features an all new wheel drive propulsion system. The Barreto-matic uses a load sensing hydraulic valve to adjust the trenching wheel speed according the load on the digging chain. When the load on the digging chain increases, the sensing valve sends less oil to the wheel drive motor and wheel speed will automatically slow down. When the load on the digging chain decreases, the sensing valve sends more oil to the wheel drive motor and the wheel drive speed will automatically increase. This keeps a constant load on the engine regardless of differing soil conditions or the depth of cut. It also eliminates the responsibility on the operator to constantly adjust wheel speed. Nothing could be easier for the novice operator.
