Barreto 1324D User manual

1324D-1624D Owner’s Manual 8/29/18 Page 1 of 19
THE
MODELS 1324D – 1624D
HYDRAULIC 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 it and this manual to become familiar with the trencher, its characteristics,
and 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 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 Hwy 203, La Grande, OR 97850
[phone] [phone]
FAX [phone]
E-Mail: [e-mail]
Web Site: http://www.barretomfg.com
Machine Identification Record
Machine model number
Machine serial number
Engine manufacturer
Engine model number
Engine serial number

1324D-1624D Owner’s Manual 8/29/18 Page 2 of 19
TABLE OF CONTENTS
TRENCHER ASSEMBLY INSTRUCTIONS 3
SERVICE INFORMATION 3
HOUR METER 4
TRENCHER INTENDED USE 4
CHAIN INSTALLATION 5
OPERATOR TRAINING 5
MAINTENANCE PREPARATION 6
WARRANTY OF BARRETO MANUFACTURING EQUIPMENT 6
ROUTINE MAINTENANCE 7
WHEEL DRIVE VALVE CABLE ADJUSTMENT 8
DIGGING CHAIN VALVE LEVER ADJUSTMENT 9
AXLE LOCK ADJUSTMENT 10
SPEED CABLE ADJUSTMENT 11
SPEED CONTROL TENSION ADJUSTMENT 12
ELECTRICAL SCHEMATIC – HONDA GX390 13
ELECTRICAL SCHEMATIC – BRIGGS VANGUARD 16 HP 14
HYDRAULIC SCHEMATIC 15
SPECIFICATIONS 16
TROUBLESHOOTING 17

1324D-1624D Owner’s Manual 8/29/18 Page 3 of 19
ASSEMBLY INSTRUCTIONS
1. Upon delivery, check for freight damage and any missing items. Notify the carrier and Barreto
Manufacturing immediately of any damage so a claim can be filed. Remove trencher from
shipping crate.
2. When documentation refers to “right side” or “left side”, it is relative to the operator’s position
with both hands on the handlebars.
3. Install the boom onto boom pivot/mount with the 7/8" wide wear strip on the bottom side of
the boom. Push the boom on as far as it will go. Be sure the adjuster screw is backed out.
SERVICE INFORMATION
• Check reservoir level using sight glass on the left side of the tank. If required, add to reservoir
tractor transmission / hydraulic fluid. For machine use in ambient temperatures between +32°F
(0°C) and +90°F (32°C) hydraulic fluid ISO 68 is recommended. If the machine is operated at
temperatures below +32°F (0°C) then hydraulic fluid ISO 46 is recommended. The tank holds
approximately 14 gallons of hydraulic oil. Recheck oil level after the trencher has been run and
oil has been circulated through the wheel and chain motors. Routinely check level thereafter.
DO NOT OVERFILL THE TANK.
• Change the hydraulic oil filter after the first 50 hours of use. Change it every 200 hours
thereafter.
• Add 1 quart of hydraulic oil to the reservoir with each filter change.
• Discard the old filter according to environmental standards in your geographic area.
• Check all hydraulic fittings for leaks and tighten if necessary.
• Grease per the following schedule:
a. Boom Pivot – Daily
b. Outboard Bearings – Daily
c. Wheel Hubs, 1 zerk for each hub – Monthly
d. Cylinder Pins (2) – Daily
e. Cylinder Rod End (thru hole in motor cover) – Daily
f. Sprocket Hub Bearing – Daily
g. Front Wheel Axle – Weekly
h. Chain Roller – Daily
IMPORTANT: The engine is normally serviced prior to shipping. However, shipping regulations
may prohibit this. Check levels and add oil and fuel as required before starting. Service according to
the engine manual before starting.
IMPORTANT: If the couplers between the engine and the pump are
moved or removed for any reason, it is CRITICAL that they have a 1/16”
gap between them when reinstalled. Failure to have this gap will result in
rapid wear and failure of your pump!
NOTE: It is very important to move the fuel shutoff lever to the closed position after
stopping the engine. Failure to do so could cause fuel to leak down into the cylinder and
crankcase. Damage resulting from this will void your engine warranty and not be covered.
WARNING: Running the engine without hydraulic oil will cause serious damage to
the hydraulic pump. CHECK RESERVOIR LEVEL BEFORE STARTING THE
MACHINE.

1324D-1624D Owner’s Manual 8/29/18 Page 4 of 19
HOUR METER
The DGI®TACH/HOUR hour meter tracks the hours of machine operation in order for routine
maintenance to be performed on a timely basis.
Your DGI® hour meter is pre-set at the DGI® factory to go into Flash Alert mode at 25-hour
intervals. Although the engine manufacturer does not require changing engine oil this often, due to
heavy-duty use and extreme conditions inherent to tiller use, Barreto Manufacturing strongly
recommends frequent oil changes.
Refer to this manual for equipment service requirements and to the Engine Manual for other engine
service requirements.
While Flash Alert is active, hold the tip of the RESET TOOL (Key Kancel Wand) against the meter as
shown. Within several seconds, the display will stop flashing indicating the Service Interval has been
reset. If the wand gets lost, a small mechanic’s pick-up magnet will work.
RESET TOOL
TRENCHER INTENDED USE
This machine is designed for digging trenches in “normal” ground of reasonably soft dirt and stones up
to 6” (15cm) 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.

1324D-1624D Owner’s Manual 8/29/18 Page 5 of 19
DIGGING CHAIN INSTALLATION
1. Slide the digging chain under the sprocket, with teeth in the correct cutting direction. Properly
installed, the cutting edges of the chain will face forward on the top of the boom and rearward
on the bottom of the boom (see diagram below).
2. Start the engine. Push digging boom control lever forward to lower boom onto the chain.
Shut off the engine.
3. Wrap the chain around boom and sprocket. Install chain master link or link pin.
4. Use the boom adjuster screw to tighten the chain. The chain should have enough slack to allow
approximately 2" of space between middle of boom and chain when the boom and chain are
straight out in a horizontal position.
5. Tighten adjuster screw locknut and 4 boom mounting bolts.
Forward Cutting edge
Cutting edge Rearward
OPERATOR TRAINING
Rental companies should demonstrate all of the machine operations to each rental customer
including:
• Starting up the engine.
• Loading the trencher onto the trailer and securing it for road transport.
• Unloading the trencher from the trailer.
• Trenching procedure - Operation of the trencher.

1324D-1624D Owner’s Manual 8/29/18 Page 6 of 19
MAINTENANCE PREPARATION
Only trained & 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 of the hydraulic components until cool.
WARNING: Muffler and engine get hot enough to cause serious burns. For the
safety of yourself and others, allow enough time for the engine, muffler, and the
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.
If you need to lower the dig chain boom without power, do the following:
1. Position a pan under the trencher to catch hydraulic fluid.
2. Support the boom front end with a hoist or forklift.
WARNING: The boom with dig chain is heavy. Manpower alone is not recommended, but if
necessary, use a team of two strong workers to support the boom, and a third worker to loosen the
hose.
3. Loosen the hose at the rod end (front) port of the boom cylinder and lower the boom.
4. If it still will not lower, then loosen the hose at the back end port of the boom cylinder.
BARRETO MANUFACTURING, INC.
EQUIPMENT
WARRANTY
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.

1324D-1624D Owner’s Manual 8/29/18 Page 7 of 19
ROUTINE MAINTENANCE
Routinely check the condition, clean, tighten, repair, or replace as necessary the following:
• Dig chain boom guard
• Muffler guard
• Hydraulic hoses and fittings
• Fuel lines
• Fasteners
• Safety decals
Clean safety decals often using soap and water. Do not use abrasive cleaners or solvents such as mineral spirits
that may damage the decals. Replace any damaged (unreadable) or missing decals. If you replace a machine
part that has one or more decals affixed to it, replace the decals also. Replacement parts and decals can be
purchased from Barreto Manufacturing, Inc. When attaching decals, the temperature of the mounting surface
must be at least 40°F (5°C) and must be clean and dry.
Service the engine according to the engine owner’s manual. Follow the directions for all aspects of service
including air filter change, oil level checking, filling, draining, disposal of engine oil, disposal of
petrol/gasoline, and off-season long-term storage.
Off-season long-term storage of the trencher can be at any ambient temperature.

1324D-1624D Owner’s Manual 8/29/18 Page 8 of 19
WHEEL DRIVE VALVE CABLE ADJUSTMENT
MEASURE MOVEMENT
The clutch cable and lever must have some free play. The cable will stretch and occasionally needs
adjustment. Two hoses are hidden in the illustration.
1. Rotate the actuator arm clockwise, by hand, to take up any free play. Measure the distance from the
pin of the actuator arm to the end of the cable housing.
2. Pull the clutch lever all the way up until it touches the handle bar grip. With the lever pulled up, again
measure the distance from the pin of the lever to the cable housing. Calculate the difference.
3. Adjust the cable for 7/16” to 1/2" movement of the actuator arm at the pin. Do not include any lever
free play in the measurements.
4. To see a video on how to do this adjustment, enter the following address in your browser URL
window: https://www.youtube.com/watch?v=utUdozpYBcg&feature=youtu.be

1324D-1624D Owner’s Manual 8/29/18 Page 9 of 19
DIGGING CHAIN VALVE LEVER ADJUSTMENT
ADJUSTMENT BOLTS
SEE DETAIL VIEW DETAIL VIEW
The chain valve control should be adjusted to completely activate the chain valve when the dig chain control
is in ‘ON’ position. To check this adjustment, put the chain on/off control in ON position (with engine
stopped). Pull the clutch lever on left handlebar up until it touches the handgrip. While holding clutch lever
up, push on the chain forward/neutral/reverse lever. It should be at the end of its stroke, thus not move down
any more. If the chain F/N/R lever can be pushed down more, the valve spool lever should be adjusted. To
adjust, remove back cover from the control panel. Loosen the 2 bolts on valve lever and rotate the lever plate
down about 1/16”. Re- tighten the bolts and check the lever stroke. Adjust so the valve lever comes to the
end of its stroke just as the clutch lever touches the handgrip when chain valve control is in ON position.

1324D-1624D Owner’s Manual 8/29/18 Page 10 of 19
AXLE LOCK ADJUSTMENT
Cable should be adjusted so there is no slack in cable when upper lock lever is in the unlock
position. There should also be no tension on lock spring at lower lever.
Measure the position of the lower lock lever. Measure at the tip of the lever.
Put Axle lock lever in LOCK position.
Push down on handlebars and rotate trencher side-to-side to align the axle gears. The lower lock
lever should snap into its lock position.
Measure the position of the lower lock lever.
The movement of the lower lock lever should be 9/16" to 5/8" from the LOCK position to the
UNLOCK position.

1324D-1624D Owner’s Manual 8/29/18 Page 11 of 19
SPEED CABLE ADJUSTMENT
ADJUST HERE
Speed cables should be adjusted so trencher is stationary when clutch lever is pulled up and speed
lever is in neutral.
Speed cables should be adjusted if trencher creeps when in neutral. Adjust the cables to bring the
pump cable arms to the neutral position (vertical) when the wheel control levers are in neutral. Adjust
the cables to eliminate slack, but do not over tighten them so they are extremely tight against each
other.
Loosen locknuts and adjust as needed. Adjustment may be made at both ends of cable housing.

1324D-1624D Owner’s Manual 8/29/18 Page 12 of 19
SPEED CONTROL TENSION ADJUSTMENT
To adjust the Speed Control handle tension, follow these simple instructions.
1. Take off the back cover.
2. Look under the speed control and you will see a socket head bolt threaded into the speed cable
clamp (See diagram). This is the tension clamp.
3. The socket head bolt is adjusted with a 3/16” hex wrench.
4. If you tighten the socket head bolt (turn clockwise), the tension of the speed lever will
increase.
5. If you loosen the socket head bolt (counter-clockwise), the tension will decrease.
ADJUST HERE

1324D-1624D Owner’s Manual 6/15/18 Page 13 of 19
ELECTRICAL SCHEMATIC - HONDA GX390
TECHNICAL &
CONSUMER INFORMATION
Engine Types With Oil Alert® and Without Electric Starter

1324D-1624D Owner’s Manual 6/15/18 Page 14 of 19
ELECTRICAL SCHEMATIC – 16HP BRIGGS/VANGUARD

1324D-1624D Owner’s Manual 6/15/18 Page 15 of 19
HYDRAULIC SCHEMATIC

1324D-1624D Owner’s Manual 6/15/18 Page 16 of 19
SPECIFICATIONS
MODEL NUMBERS
DIMENSIONS
1324D
1624D
Weight
Height
Length
Width
Wheel Base
900 lb. (408.23 kg)
45.25” (1.17 m)
83” (2.11 m)
35” (889 mm)
35” (889 mm)
900 lb. (408.23 kg)
45.25” (1.17 m)
83” (2.11 m)
35” (889 mm)
35” (889 mm)
ENGINE
Engine Options
Honda GX390
Briggs Vanguard 16 hp V-Twin
Fuel
Gasoline
Gasoline
Power: hp (kW) at 3600 RPM
11.7 hp (8.73 kW)
16 hp (11.93 kW)
Fuel Capacity 1.72 U.S. gallons (6.5 liters) 1.75 U.S. gallons (6.6 liters)
Engine Oil Capacity
1.16 quarts (1.1 liters)
1.38 quarts (1.36 liters)
Electric Start
Hour Meter
May or may not have
Standard
May or may not have
Standard
HYDRAULIC SYSTEM
Reservoir Capacity
14 U.S. gallons (53 liters) 14 U.S. gallons (53 liters)
OPERATIONS
Ground Drive, Forward
180 feet per minute (54.86 m/m)
180 feet per minute (54.86 m/m)
Ground Drive, Reverse
Digging Chain Speed
90 feet per minute (27.43 m/m)
260 feet per minute (79.24 m/m)
90 feet per minute (27.43 m/m)
260 feet per minute (79.24 m/m)
BOOM / CHAIN OPTIONS
Depths
24”, 30”, 36” (61 cm, 76 cm, 91 cm) 24”, 30”, 36” (61 cm, 76 cm, 91 cm)
Widths
4” (102 mm) or 6” (152 mm)
4” (102 mm) or 6” (152 mm)
Chain Types
Skip Cup
Double Cup
Shark Combo
Bolt on Shark
Welded Shark
Skip Cup
Double Cup
Shark Combo
Bolt on Shark
Welded Shark
OPTIONAL ACCESSORIES
A1550 - Lift eye: for hoisting the trencher
A1580 - Backfill blade: to fill in trenches
A1390 - Crumber: provides more effective removal of dirt from trench

1324D-1624D Owner’s Manual 6/15/18 Page 17 of 19
TROUBLESHOOTING GUIDE
CAUTION! Always use extreme care when trouble shooting or making adjustments on
trencher. Stay clear of chain and auger when engine is running. Stop
engine before disassembling any component.
A.
Entire hydraulic system does not operate and the engine is not under load
1.
Broken or improperly adjusted
See wheel drive valve cable adjustment
drive valve cable.
and adjust or replace cable.
2.
Low hydraulic oil in tank.
Add oil until it shows in sight gauge.
3.
Hydrostatic pump not primed
Prime the pump.
4.
Hydraulic pump-to-engine coupler
Check for wear and replace both
has slipped.
coupler halves and rubber spider,
as needed.
B.
Chain fails to rotate, but wheels drive.
1.
Chain valve controls or push rod
See digging chain valve adjustment
adjusted improperly.
and adjust controls or push rod.
2.
Chain motor worn.
Rebuild or replace with new motor.
3.
Sheared key on chain shaft.
Replace parts as needed.
4.
Chain valve relief valve not
Check relief valve spring for breakage.
functioning properly.
To set relief valve, remove to hose
from chain control valve. Install a 4000 psi
pressure gauge on the valve port. Start
the engine and manually put the chain
valve lever in the “FORWARD” position.
Adjust the relief valve (on top of the chain
valve) so relief is activated at 3000 psi, or
engine stops.

1324D-1624D Owner’s Manual 6/15/18 Page 18 of 19
TROUBLESHOOTING GUIDE continued
C.
Wheels fail to turn but chain rotates.
1.
Wheel hub pins have been removed.
Install pins and secure with lock nuts.
2.
Wheel drive valve not adjusted properly.
See wheel drive valve adjustment
and adjust cable accordingly.
3.
Air leaking into hydraulic pump intake.
Inspect and tighten fittings on pump intake.
4.
Wheel drive relief valve malfunction.
Remove tank lid and remove valve.
Inspect, test, and/or replace as needed.
5.
Wheel drive key or gear broken.
Drain hydraulic oil, remove tank lid
and inspect. Repair as needed.
Remove all debris.
6.
Speed cable or linkage broken.
Inspect and repair as needed.
D.
Engine lugs down or dies and wheels and chain do not turn.
1.
Rocks or other obstructions stopping
Reverse chain momentarily to free it
chain.
from obstruction. Raise boom and stop
chain. Remove obstruction from trench.
2.
Trenching depth or speed too great for
Decrease ground speed or trenching
soil conditions.
depth.
3.
Chain shaft support bearing binding.
Lubricate or replace as needed.
4.
Engine improperly tuned or maintained.
See engine manual and correct as needed.
5.
Low oil causing engine to shut down.
This may occur when trenching on hills.
Level trencher, check oil and allow oil
alert to reset. See engine manual.
6.
Engine losing power due to wear
See engine manuals.

1324D-1624D Owner’s Manual 6/15/18 Page 19 of 19
TROUBLESHOOTING GUIDE continued
E.
Oil leaks in hydraulic system.
1.
Fittings are loose.
Tighten fittings on hoses and piping.
2.
Worn or broken hoses.
Inspect hoses for breaks and abrasions.
Replace as needed.
3.
Oil around chain motor or shaft.
Inspect motor for leaking shaft seal.
Order seal kit or replace with new motor.
F.
Foaming hydraulic oil coming from breather hose.
1.
Improper oil used.
Verify that hydraulic oil used has anti-wear
and anti-foaming additives.
2.
Pump intake leaking air into oil.
Inspect and tighten fittings on intake
side of pump.
3.
Hydraulic pump is faulty.
To test pump pressure output, remove
top hose from the chain control valve.
Install a 4000 psi pressure gauge and start
the engine. Manually put the chain valve
lever in the “FORWARD” position. The
output pressure should be about 3000 psi.