Barreto 712MTH Operator's Manual
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Barreto 712MTH Operator's Manual

Hydraulic micro trencher
Source: barretomfg.com
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This machine is designed for digging trenches in "normal" ground of reasonably soft dirt and stones up to 3" (7.62cm)
in diameter. Ground with larger stones, high clay content, very hard packed, very dry, or in a frozen condition may be
unsuitable for normal trenching. Consider using a backhoe or other heavier equipment for such conditions.
712MT OPERATOR'S MANUAL
MODEL 712MT
HYDRAULIC MICRO TRENCHER
OPERATOR'S MANUAL
TRENCHER INTENDED USE

TABLE OF CONTENTS

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3/25/19
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Summary of Contents for Barreto 712MTH

  • Page 1: Table Of Contents

    MODEL 712MT HYDRAULIC MICRO TRENCHER OPERATOR’S MANUAL TRENCHER INTENDED USE This machine is designed for digging trenches in “normal” ground of reasonably soft dirt and stones up to 3” (7.62cm) in diameter. Ground with larger stones, high clay content, very hard packed, very dry, or in a frozen condition may be unsuitable for normal trenching.

  • Page 2: Lubrication Requirements

    LUBRICATION REQUIREMENTS Grease at the intervals indicated per the illustration of grease lubrication points. There is also a grease diagram decal on the machine. 712MT OPERATOR’S MANUAL 3/25/19 Page 2 of 16...

  • Page 3: Safety Messages

    SAFETY MESSAGES General safety messages are listed in this Safety Messages section. Specific safety messages appear as appropriate in this manual where a potential hazard may occur if procedures or instructions are not followed correctly and completely. SAFETY SYMBOL This is the international safety alert symbol. This symbol is used in combination with a signal word and written message to warn you of a potential for bodily injury or death.
  • Page 4 SAFETY INSTRUCTIONS OVERVIEW (continued) Wear safety goggles and a hard hat while operating or observing! WARNING: The dig chain may throw stones and debris. Wear adequate hearing protection while operating or observing. WARNING: Exposure to loud noise is cumulative and may permanently damage your hearing.
  • Page 5 WARNING: If trencher should fall, it would crush anybody under it. We recommend having a fire extinguisher suitable for petrol fires in the operating area. Attachments can change the center of mass and machine operations. Use only Barreto attachments. 712MT OPERATOR’S MANUAL...

  • Page 6: Trencher Operating Instructions

    TRENCHER OPERATING INSTRUCTIONS READ SAFETY INSTRUCTIONS BEFORE OPERATING! Both the SAFETY INSTRUCTIONS and OPERATING INSTRUCTIONS are in this manual. Be sure that the engine oil and fuel and the machine hydraulic fluid are all at proper levels before starting the engine. STUDY AND UNDERSTAND CONTROLS BEFORE BEGINNING OPERATION.

  • Page 7: Engine Controls

    TRENCH CHAIN CONTROL IGNITION WHEEL DRIVE DIRECTION CONTROL WHEEL DRIVE ENGAGE LEVER DIGGING BOOM CONTROL ENGINE CONTROLS CHOKE: Use to aid starting the engine when it is cold. IGNITION SWITCH: There are two ignition switches. One switch is located on the control panel with the other trencher controls for your convenience.

  • Page 8: Engine

    FUEL SHUTOFF THROTTLE CHOKE IGNITION ENGINE START UP PROCEDURE Only operate trencher outdoors and avoid breathing engine exhaust and fumes. WARNING: Engine exhaust contains carbon monoxide gas that is toxic. Breathing it can cause unconsciousness and death. Avoid any areas or actions that expose you to carbon monoxide. 1.

  • Page 9: Getting Started

    GETTING STARTED 1. Lock wheel hubs 2. Start and warm up engine. 3. Put the WHEEL DIRECTION CONTROL in desired position and pull the WHEEL DRIVE ENGAGE LEVER. 4. Adjust the travel speed and navigate the trencher to the starting position. The trencher is designed to dig toward the operator (with the Wheel Drive Control in reverse).

  • Page 10: Ground Transport Of The Trencher

    GROUND TRANSPORT OF THE TRENCHER Raise the digging chain boom. WARNING: Contact with the dig chain or auger while in operation will cause serious injury or even death. The teeth of the dig chain are sharp. Avoid contact even when the chain is not moving. Use the WHEEL DRIVE CONTROL to control travel direction.

  • Page 11: Road Transport Of The Trencher

    ROAD TRANSPORT OF THE TRENCHER The BEST way to transport the trencher over roads is with the BARRETO E3X4DGT TRAILER. Refer to the following checklist before towing: • Towing vehicle should have a 2" (5cm) ball. Be sure it is in good repair and securely fastened to the vehicle.

  • Page 12: Operator Preparation

    OPERATOR PREPARATION Each operator must: • Become familiar with the controls and operation of the trencher, preferably under the supervision of an experienced operator. • Be 18 yrs. of age or older and be mentally and physically capable of operating the trencher safely. •...

  • Page 13: Determine Location Of Underground Utilities

    DETERMINE LOCATION OF UNDERGROUND UTILITIES OSHA CFR 29 1926.651 requires that the estimated location of underground utilities be determined before beginning excavation or an underground drilling operation. When the actual excavation or bore approaches an estimated utility location, the exact location of the underground installation must be determined by a safe, acceptable and dependable method.

  • Page 14: Contact With Underground Utilities

    CONTACT WITH UNDERGROUND UTILITIES After LOCATING UNDERGROUND UTILITIES and performing the WORK SITE ASSESSMENT, accidental dig chain contact with a buried utility might still occur. If it does, stop digging and call 911 for help. If you cut a wire or cable, assume that you do not know what kind it is. It may be electrical or any one of several communication lines: telephone, television, or fiber optic.

  • Page 15: Work Site Assessment

    WORK SITE ASSESSMENT Examine the work area for any conditions or obstructions that may inhibit trenching or create a safety hazard for the operator or others. Use the information in this manual combined with good judgment to identify any hazards to avoid. In addition to calling to DETERMINE LOCATION OF UNDERGROUND UTILITIES (see previous section for details), the operator and/or job foreman should visually inspect the work site.

  • Page 16: Index

    INDEX BOOM, 6-7, 9-10 PERSONAL PROTECTION, 4, 11, 12 CALL BEFORE YOU DIG, 3, 13 PLUNGE CUT, 9 CHAIN CONTROL, 3, 6, 7, 9 PROTECTION, 4, 11, 12 CHOKE, 7-9 RAMPS, 11 COLD WEATHER OPERATIONS, 9 REFUELING, 5, 10 CONTROLS, 6, 7, 8, 11 ROAD TRANSPORT, 11 SAFETY GOGGLES, 4, 12 DECALS, 3...

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712mt

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