Barreto 1320H User manual

1320 owners manual.doc 4/22/08 page 1 of 10
THE
MODELS 1320H & 1620B
HYDRAULIC REAR TINE TILLERS
CONGRATULATIONS!
You are now the proud owner of the BARRETO Model 1320 or 1620 tiller. Please take a
moment of your time to look over the following information. Familiarize yourself with the tiller,
its characteristics, and method of operation. Pay particular attention to the safety and operating
instructions.
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 Hwy 203, La Grande, OR 97850
[phone] [phone]
FAX [phone]
E-Mail: [email protected]
Web Site: http://www.barretomfg.com

1320 owners manual.doc 4/22/08 page 2 of 10
ASSEMBLY INSTRUCTIONS
1. Remove tiller from shipping crate.
2. Screw the handle bar adjustment crank into the lower handle bar adjuster pin.
3. Fasten handle bar to tiller using the 1/2" x 3" bolt supplied.
4. Adjust clutch cable by removing all slack in lever.
5. Check reservoir according to instructions in service information on the following page.
6. Fill engine with fuel and oil according to the engine manual.
7. Free wheel hubs: Pull one free wheeling pin slightly, using the split ring. Rotate the pin
until the 1/8" diameter roll pin aligns with the slot in the mounting plate. Allow the pin
to slide through the slot. Repeat for the other wheel. Roll the tiller until each pin drops
into a hole in the hub. The hubs are now locked.
8. Uncoil the wire for the remote engine on/off switch. Route the wire along the clutch
cable to the engine and secure with the cable ties provided. Splice this wire to the kill
switch wire on the engine with the electrical splice provided.

1320 owners manual.doc 4/22/08 page 3 of 10
SERVICE INFORMATION
1. Check reservoir level using sight glass on the left side of the tank. If required, add to
reservoir with tractor transmission hydraulic oil (Shell DONAX TD FLUID or comparable).
Recheck oil level after the tiller has been run and oil has been circulated through the wheel
and tine motors. Routinely check level thereafter. DO NOT OVERFILL THE TANK.
2. Change the hydraulic oil filter after the first 50 hours of use. Change it after every 200 hours
thereafter.
3. Add 1 quart of hydraulic oil to the reservoir with each oil filter change.
4. Check the tine bolts after each use and tighten as needed. Check all hydraulic fittings for
leaks and tighten if necessary.
5. Tines should be changed as often as needed for the machine to do a satisfactory and efficient
tilling job. Use Loctite 271 (red) on tine bolt threads to prevent loosening.
6. The grease zerk on the outboard end of the tine shaft flange bearing should be greased after
every 4 to 8 hours of use.
7. Grease zerks on the axle ends (to lube wheel hubs) should be greased once a week or so,
depending upon freewheel use.
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.
WARNING: Running the tiller without hydraulic oil will cause serious damage to the hydraulic
pump. CHECK RESERVOIR LEVEL BEFORE STARTING THE MACHINE.
BREAK IN PROCEDURE
KEEP ALL PERSONNEL CLEAR OF MACHINE
DURING BREAK IN TO PREVENT INJURY!!
Before using tiller, lower the depth bar to raise the tines off the ground. Tape clutch handle in
closed position and let the machine run for 30 minutes at half throttle with tines in motion.

1320 owners manual.doc 4/22/08 page 4 of 10
OPERATING INSTRUCTIONS
1. READ SAFETY INSTRUCTIONS BEFORE OPERATING!
2. Be sure engine oil and hydraulic oil are at proper levels before starting tiller.
3. STUDY AND UNDERSTAND CONTROLS BEFORE BEGINNING OPERATION.
4. NEVER RUN MACHINE IN REVERSE WHILE TINES ARE ROTATING.
5. Always move the tine control lever to "OFF" before reversing wheels.
6. Tine control lever should be set at "OFF" when moving tiller from place to place while
not tilling.
7. CLUTCH (ACTUATOR) LEVER: (At left handle grip) Activates Wheel Drive and Tine
Rotation controls when squeezed. Stops all motion when released.
8. WHEEL DRIVE LEVER: The wheel speed is variable both in forward and reverse.
Moving WHEEL DRIVE lever to the right causes the tiller to go forward; move to the
left to back up. The farther the control lever is moved away from center, the faster the
tiller will travel. When the lever is centered, the wheels are locked in a neutral or park
position.
9. TINE DRIVE LEVER: The tines operate at a constant speed. The TINE DRIVE lever
must be moved all the way over to the forward "ON" position when tilling. If an object
becomes lodged in the tines, put the WHEEL DRIVE lever in neutral and reverse the
tines to dislodge it.
10. OPERATE TILLER ON LEVEL GROUND ONLY!
11. TILLING OPERATION: In most soil and sod conditions, the depth bar can be set with
the pin in the third hole from the top.
When starting to till, move the TINE DRIVE lever to the ON (forward) position.
Squeeze the CLUTCH LEVER completely to engage tines.
Move the WHEEL DRIVE lever to the right until desired wheel speed is reached.
Under most conditions, at least two passes must be made. For deeper tillage, move the
depth bar up one hole at a time.

1320 owners manual.doc 4/22/08 page 5 of 10
SAFETY INSTRUCTIONS
1. READ SAFETY AND OPERATING INSTRUCTIONS BEFORE OPERATING!
2. DO NOT LEAVE TILLER UNATTENDED WITH ENGINE RUNNING.
3. Always park on level surface, never on an incline.
4. USE EXTREME CAUTION IF TRANSPORTING TILLER DOWN ANY INCLINE,
ESPECIALLY IF USING RAMPS OFF A PICK-UP TRUCK.
5. The SAFETY CLUTCH (ACTUATOR) lever on the left handle bar is for operator
protection. DO NOT TAPE DOWN OR OTHERWISE BY-PASS THIS CLUTCH.
6. Objects may become airborne while operating tiller. Wear safety goggles, hard hat,
protective footwear and hearing protection while operating or observing!
7. Rotating tines can cause serious injury. KEEP HANDS AND FEET CLEAR!
8. KEEP TINE COVER CLOSED and MACHINE LEVEL while tines are operating.
9. Buried cables or gas lines can cause serous injury or death. Contact local agencies for
location.
10. Fuel exhaust and fuel fumes can cause illness or death. Operate outdoors and avoid
breathing exhaust and fumes.
11. Fuel-fumes can catch fire or explode. Do not smoke or operate near flames or sparks.
12. Hydraulic oil is under extreme pressure and can get under skin and burn or poison.
Check for leaks with cardboard.
13. Muffler and engine get hot enough to cause serious burns. Do not touch until cool.

1320 owners manual.doc 4/22/08 page 6 of 10
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, dating from 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 or 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 accessories and tires are warranted by the original manufacturers and are not
covered by the Barreto Equipment Warranty.

1320 owners manual.doc 4/22/08 page 7 of 10
1320H & 1620B TILLER TROUBLE SHOOTING GUIDE
CAUTION: ALWAYS USE EXTREME CARE WHEN TROUBLE SHOOTING OR MAKING
ADJUSTMENTS ON THE TILLER. STAY CLEAR OF TINES WHEN ENGINE IS
RUNNING. ALWAYS SHUT THE ENGINE OFF BEFORE DISASSEMBLING ANY
COMPONENT.
A. ENTIRE HYDRAULIC SYSTEM DOES NOT OPERATE AND THE ENGINE IS NOT
UNDER LOAD
1. Broken or improperly adjusted clutch
(actuator) cable.
2. Low hydraulic oil in tank.
3. Hydraulic pump-to-engine coupler has
slipped.
4. Hydraulic pump worn or tine motor relief
valve not functioning properly.
If broken, replace. Remove slack then
adjust for 7/16” to 1/2" movement at
actuator lever pin.
Fill to center of sight glass.
Check for wear and replace both coupler
halves and rubber spider as needed.
Follow the series of tests described below
Remove the tank end (at the tee fitting) of the hose that goes from the pump to the tank. Start the
engine and with the tines and wheels in neutral, pump off about four gallons of hydraulic oil into
a clean bucket. (The .52 CID pump, @ 1000 PSI & 3000 RPM, should pump at the rate of 6.5
GPM.) Replace the hose and remove the tank lid. Block the tines with a short 4 X 4 and stand to
the side.
With tines selected to ON (forward) rotation, squeeze the clutch lever and check to see where the
oil enters the tank. If the pump is good, the oil will enter through the relief valve or the return
line from the filter. If the oil returns only through the filter return, the tine-drive motor is bad.
If the oil returns through the relief valve but does not kill the engine, check the out-put pressure
of the pump. To do this, "T" a 4000 pound gauge into the line at the tank. DO NOT BLOCK
THE LINE OR DEAD-HEAD THE GAUGE INTO THE LINE. With the tines in forward and
blocked, activate the system as before. The relief valve for the 1320H is set at 3000 pounds, and
3500 pounds for the 1620B. If the gauge reaches the specified pressure, the relief valve is OK.
If not, the relief valve is bad and needs to be replaced.
If the pressure reaches 3000 pounds but there is only a small amount of oil returning, the pump is
worn and should be replaced.

1320 owners manual.doc 4/22/08 page 8 of 10
1320H & 1620B TILLER TROUBLE SHOOTING GUIDE (CONTINUED)
B. TINES FAIL TO ROTATE BUT WHEELS DRIVE.
1. Clutch cable stretched so needs
adjustment
2. Tine motor worn.
Remove cable slack then adjust for 7/16” to
1/2" movement at actuator lever pin.
Rebuild or replace motor. New motors are
available from Barreto Mfg.
C. WHEELS FAIL TO TURN BUT TINES ROTATE
1. Wheel axle keys have been sheared or
removed.
2. Wheel relief valve bad
Replace keys.
Replace relief valve.
D. ENGINE LUGS DOWN OR DIES AND WHEELS AND TINES DO NOT TURN.
1. Rocks or other obstruction blocking tines.
2. Tine shaft bound with wire, vines, or
grass.
3. Tilling depth too great for soil conditions.
4. Outboard tine shaft bearings binding.
5. Engine improperly tuned or maintained.
6. Low oil alert causes engine to shut down.
7. Engine losing power due to wear.
Shut OFF engine and remove obstruction.
Shut OFF engine and remove debris,
especially at the ends.
Shut OFF engine and lower depth bar to
raise the tines, decreasing tilling depth.
Lubricate or replace bearings as needed.
See engine manual and correct as needed.
This may occur if tilling on hills, (not
advised). Level the tiller and check engine
oil level. Fill if required. Oil alert should
reset. See engine manual.
See engine manual.

1320 owners manual.doc 4/22/08 page 9 of 10
1320H & 1620B TILLER TROUBLE SHOOTING GUIDE (CONTINUED)
E. OIL LEAKS IN HYDRAULIC SYSTEM.
1. Fittings are loose.
2. Worn or broken hoses.
3. Oil around tine motor shaft
Tighten as required
Replace as necessary
Inspect tine motor for leaking shaft seal.
Rebuild per instructions in Hydraulic Motor
manual or replace with a new motor.
F. EXCESSIVE FOAMING OF HYDRAULIC OIL FROM VENT HOSE.
1. Improper oil used.
2. Pump sucking air.
3. Hydraulic pump is faulty
Verify that hydraulic oil used has anti-
foaming additives. *
Inspect and tighten fittings on intake side of
pump
Test using procedure in section A4 above
* Recommended oil is Shell DONAX TD FLUID or equivalent hydraulic oil with anti-foaming
and anti-wear additives

1320 owners manual.doc 4/22/08 page 10 of 10
REMOVAL OF TINE DRIVE HYDRAULIC
MOTOR, HUB, AND MOTOR MOUNT
1. Remove tine cover #1008 (twelve 5/16 X 1 bolts).
2. Remove left bank of tines (4 tines closest to hydraulic motor).
3. Remove the 3 bolts (3/8 X 1) that hold the right side plate (#1007) in place.
4. Remove the tine shaft (#1011), bearing (#3043), and side plate (#1007) from the tine motor
hub (#1010). If it does not slip off easily, use a lead shot hammer on the center flange of the
tine shaft.
5. CAUTION: DO NOT PRY BETWEEN HUB AND TINE SHAFT FLANGE.
6. To remove the tine motor hub from the motor shaft: with pulling collar (#2019) in place,
insert snap ring (#3041) in the hub groove and remove with puller. The hub may be very
tight and require heat or penetration oil to free it from the motor shaft. Extreme cases may
need to be removed with a cutting torch.
7. Remove hydraulic hoses from motor.
8. Remove tine motor guard (4 bolts) and motor mount bracket (remaining 4 bolts) and slip
motor out. Then, remove motor from mount bracket (four 1/2 X 1 1/2 bolts).
9. On older motors, remove dirt shield from face of motor. To remove screws, first heat screw
heads with torch to melt the Loctite. Remove screws with 1/8” Allen wrench.
10. Motor is now ready to be serviced. Follow steps outlined in Char-Lynn repair manual for
2000 series motor.
REINSTALLATION OF TINE DRIVE HYDRAULIC MOTOR
1. After motor is assembled, slip felt washer over the shaft. Slide steel dirt shield over and line
up holes. Place a drop of Loctite 271 (red) on-each screw and tighten. Newer motors have a
seal guard and do not require a felt washer nor dirt shield.
2. Bolt motor mount frame to the motor with bolts.
3. Place key in shaft slot and slide on new tine motor hub.
4. Tap hub in place with lead-shot hammer or block of wood. Place 2 drops of Loctite on bolt
and tighten.
5. Check hub with dial indicator for run out. Run out should be less than .003" on outer
diameter of hub face. With tine shaft bolted to hub, run out on shaft at outboard bearing
should be .015" or less.