background image

712MT OWNER’S MANUAL                  REVISED   3/4/22                               Page 1 of 15 

                                                        THE 

                MODEL 712MT 

                             HYDRAULIC MICRO TRENCHER 
                                         OWNER’S MANUAL 

 

 
 
CONGRATULATIONS! 
 
You are now the proud owner of a BARRETO trencher. The OPERATOR’S MANUAL is attached 
to the machine. Please study both this manual and the operator’s manual to become familiar with the 
trencher, its characteristics and its method of operation. Pay particular attention to the safety and 
operating instructions to prevent personal injury or equipment damage.   
 
If you 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 confidence in BARRETO equipment. 
 
Barreto Manufacturing, Inc. 
Innovative Equipment Engineered to Last 
66498 Highway 203 
La Grande, OR  97850 
1-800-525-7348 
1-541-963-6755 Fax 
E-Mail

[email protected]

 

Web Site

http://www.barretomfg.com

 

 
 
 

Machine Identification Record 

 

Machine model number  

________________________ 

 
Machine serial number   

________________________ 

 
Engine manufacturer      

________________________ 

 
Engine model number    

________________________ 

 
Engine serial number     

________________________ 

 

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...

Reviews: