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712MT OWNER’S MANUAL                  REVISED   3/4/22                               Page 7 of 15 

    

WARRANTY OF BARRETO MANUFACTURING EQUIPMENT 

 
 
Barreto Manufacturing, Inc. warrants all 

BARRETO

 equipment to be free of defects in material and 

workmanship for a period of one (1) year. All 

BARRETO

 fuel components, fuel tank, cap, lines & 

fittings are warranted for two (2) years.  Warranty period begins on date of delivery to the original 
user. This warranty is in lieu of all other warranties, whether written or implied, and is limited to: 

 

1.  Replacement of parts returned to the dealer and/or factory and determined defective upon 

inspection.  (Replacement for parts to dealers shall be at dealer cost plus shipping 
charges.) 

2.  Time for pick-up and/or delivery, transportation of service calls by dealers is 

excluded.  Manufacturer reserves the right to determine reasonable time required 
for repair. 

 
Warranty does not apply to damage caused by abuse or neglect.  Time and materials required 
for normal maintenance and service are also excluded from warranty coverage. 
 

Engines, engine attached fuel tanks, engine accessories, batteries and tires are warranted by the 
original manufacturer and are not covered by the Barreto Equipment Warranty.

  

 

Wear parts such as dig chains, dig teeth, sprockets, chain rollers, bearings, bushings etc. are 
excluded unless it can be determined that a defect has contributed to premature wear. 

 
 

   MAINTENANCE PREPARATION 

 
 
Only trained and qualified personnel should perform maintenance or repairs of the trencher. Before 
performing any service, maintenance, adjustments, repairs or off-season long-term storage, follow the 
SHUT DOWN PROCEDURE in the OPERATOR’S MANUAL.   
 

Do not touch the engine, muffler or any hydraulic components until cool.  

 

WARNING

: Muffler and engine may be hot enough to cause serious 

burns. For the safety of yourself and others, allow enough time for the 

engine, muffler and hydraulic fluid to cool completely before performing any 
cleaning or maintenance. 
 

Avoid contact with hydraulic fluid. 

 

WARNING

: When machine is operating, hydraulic fluid is under extreme pressure and can get 

under skin and burn or poison.  
 

 

 
 

Summary of Contents for 712MT

Page 1: ...have any questions or need any replacement parts in the future please contact us at your convenience Our toll free phone number fax and email are listed below Thank you for your patronage and confide...

Page 2: ...Meter 4 Intended Use 5 Lubrication Requirements 5 Chain Installation 6 Operator Training 6 Warranty of Barreto Equipment 7 Maintenance Preparation 7 Routine Maintenance 8 Electrical Schematic Honda G...

Page 3: ...rencher has been running and oil has circulated through the components Routinely check hydraulic fluid level Change hydraulic fluid filter after the first 50 hours of use Change it every 200 hours the...

Page 4: ...er for routine maintenance to be performed on a timely basis It can also show your engine RPM s by using the wand magnet to toggle the display If the wand gets lost a small mechanic s pick up magnet w...

Page 5: ...d that is extremely hard packed contains larger stones high clay content or is in a very dry or frozen condition may be unsuitable for normal trenching Consider using a larger trencher backhoe or othe...

Page 6: ...chain master link or link pin and cotter 4 Use boom adjuster screw to tighten chain Chain should have enough slack to allow approximately 1 3 81cm of space between middle of boom and chain when boom...

Page 7: ...tenance and service are also excluded from warranty coverage Engines engine attached fuel tanks engine accessories batteries and tires are warranted by the original manufacturer and are not covered by...

Page 8: ...le or missing decals If you replace a machine part with one or more decals affixed to it replace the decals as well Replacement parts and decals can be purchased from Barreto Manufacturing Inc When at...

Page 9: ...712MT OWNER S MANUAL REVISED 3 4 22 Page 9 of 15 ELECTRICAL SCHEMATIC HONDA GX200...

Page 10: ...712MT OWNER S MANUAL REVISED 3 4 22 Page 10 of 15 HYDRAULIC SCHEMATIC...

Page 11: ...ve is set too high Loosen the lock nut and turn the adjuster screw counter clockwise in small increments of to turns Tighten the lock nut and test trench Repeat the adjustment if wheel spin continues...

Page 12: ...d chain are not turning 1 Rocks or other obstructions are stopping the chain 2 Trenching depth or speed too great for soil conditions 3 Engine improperly tuned or maintained 4 Low oil alert causes eng...

Page 13: ...loose 2 Worn or broken hoses 3 Hydraulic fluid around chain motor or shaft Tighten fittings on hoses and adapters Replace damaged hoses Inspect motor for leaking shaft seal Rebuild or replace motor F...

Page 14: ...Option Briggs Vanguard 200 Fuel Gasoline Power 6 5 hp 4 1kW at 3600 RPM Fuel Capacity 0 95 U S gallons 3 6 liters Engine Oil Capacity 0 59 quart 60 liters Hour Meter Standard HYDRAULIC SYSTEM Reservoi...

Page 15: ...Schematic Honda GX200 10 Engine 3 Filter 3 Grease 5 Hour Meter 4 Hydraulic Fluid 3 7 Hydraulic Schematic 11 Lubrication 5 Maintenance 7 8 Oil Filter See Filter Operator Training 6 Service 3 Specifica...

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