Farm King II Series Product manual

Rotary Cutter
Series II - 5' & 6'
OPERATOR AND PARTS MANUAL
052013 FK379

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Table of Contents - Series II Rotary Cutter
Table of Contents
Introduction .................................................................................................................................5
Safety............................................................................................................................................6
• Safety Instruction.............................................................................................................6
• General Safety..................................................................................................................7
• Start-up Safety .................................................................................................................7
• Operation Safety ..............................................................................................................7
• Transport Safety...............................................................................................................7
• Service and Maintenance Safety ....................................................................................8
• Storage Safety..................................................................................................................8
• Safety Signs .....................................................................................................................8
• Safety Sign Installation ...................................................................................................8
Assembly....................................................................................................................................10
• 3-Point Hitch Mounted Assembly Instructions ............................................................10
• Trailing Model Assembly Instructions..........................................................................10
• Chain Kit Assembly Instructions................................................................................... 11
Operation ...................................................................................................................................12
• Theory of Operations.....................................................................................................14
Maintenance ..............................................................................................................................15
• Service ............................................................................................................................15
Bolt Torque .................................................................................................................................16
• Checking BoltTorque .....................................................................................................16
Part Drawings.............................................................................................................................18
• 3-Point Hitch Mounted Drawing ...................................................................................18
• Trailing Drawing.............................................................................................................19
• Parts List .........................................................................................................................20
• Chain Kit Drawing (Optional)........................................................................................24
• Chain Kit Parts List (Optional).......................................................................................25
• 510 PTO Shaft Drawing..................................................................................................26
• 510 (Shear Pin)Trailing Parts List..................................................................................27
• 510 (Shear Pin) 3-Point Hitch Parts List ........................................................................28
• 620 & 720 PTO Shaft Drawing.......................................................................................30
• 620 (Slip Clutch) 3-Point Hitch Parts List ......................................................................31
• 620 (Slip Clutch)Trailing Parts List................................................................................32
• 36

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• 510 Gearbox Drawing....................................................................................................34
• 510 Gearbox Parts List...................................................................................................35
• 620 Gearbox Drawing....................................................................................................36
• 620 Gearbox Parts List...................................................................................................37
• Cylinder Drawing and Parts List ...................................................................................38
Shipping Kit and Bundle Numbers ..........................................................................................39
• Optional Bundle Numbers ............................................................................................40
Warranty.....................................................................................................................................42
Manufacturer’s statement: for technical reasons Buhler Industries Inc. reserves the right to modify
machinery design and specifications provided herein without any preliminary notice.
Information provided herein is of descriptive nature. Performance quality may depend on soil fertility,
applied agricultural techniques, weather conditions and other factors.
Table of Contents - Series II Rotary Cutter

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Introduction - Series II Rotary Cutter
Introduction
The Farm King Series II Rotary Cutter is available in widths of 60", 72" and 84" and can be equipped
with either trailing style or 3-point hitch.The 3-point hitch is Quick Hitch compatible so it is easy to
attach and unhook. 3-point hitch models include a single solid rubber trailing wheel, while rotary
cutters with a trailing hitch have two wheels, either air-filled or made of solid rubber.
Farm King Rotary Cutters are built tough and made to last.The blades are heat-treated to enhance
rigidity and the heavy-duty gearbox is designed to be rugged and durable.The access panel on the
deck makes it easy to inspect or replace the blades. An optional chain kit minimizes the possibility
of flying debris.The stump-jumper is a 24" plate mounted to the blades below the gearbox and
minimizes stress on the deck and gearbox.The power take-off (PTO) shaft on the series II 60" rotary
cutter includes a shear pin to protect the gearbox in the event of an unforeseen obstacle, while
the 72" and 84" rotary cutters are equipped with a slip clutch to prevent gearbox damage.The 72"
with the trailing style hitch (Y720T) includes a two-piece PTO shaft for tighter turning radius. An 8"
cylinder and hoses are optional for all trailing models.
Keep this manual handy for frequent reference. All new operators or owners must review the
manual before using the equipment and at least annually thereafter. Contact your Farm King
Dealer if you need assistance, information, or additional copies of the manual. Visit our website
at www.buhlerindustries.com for a complete list of dealers in your area.
The directions left, right, front and rear, as mentioned throughout this manual, are as seen facing
in the direction of travel of the implement.

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Safety - Series II Rotary Cutter
Safety
Safety Instructions
Remember,YOU are the key to safety. Good safety practices not only protect you, but also the
people around you. Make these practices a working part of your safety program. Be certain that
everyone operating this equipment is familiar with the recommended operating and maintenance
procedures and follows all the safety precautions. Most accidents can be prevented. Do not risk
injury or death by ignoring good safety practices.
The alert symbol is used throughout this manual. It indicates attention is required and identifies
hazards. Follow the recommended precautions.
The safety alert symbol means…
ATTENTION! BECOME ALERT!YOUR SAFETY IS INVOLVED!
CAUTION The caution symbol indicates a potentially hazardous situation
that, if not avoided, may result in minor or moderate injury. It
may also be used to alert against unsafe practices.
WARNING
The Warning Symbol indicates a potentially hazardous situation
that, if not avoided, could result in death or serious injury, and
includes hazards that are exposed when guards are removed. It
may also be used to alert against unsafe practices.
DANGER
The Danger Symbol indicates an imminently hazardous situation
that, if not avoided will result in death or serious injury. This
signal word is to be limited to the most extreme situations,
typically for machine components that, for functional purposes,
cannot be guarded.

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Safety - Series II Rotary Cutter
General Safety Instructions
• Have a first-aid kit available for use and know how to use it.
• Have a fire extinguisher available, stored in a highly visible location, and know how to use it.
• Wear appropriate protective gear.This list may include but is not limited to:
- hard hat
- protective shoes with slip resistant soles
- protective glasses or goggles
- heavy gloves
- wet weather gear
- hearing protection
- respirator or filter mask
• Read and understand the Operator’s Manual and all safety signs before operating, servicing,
adjusting, repairing, or unplugging the equipment.
• Do not attempt any unauthorized modifications to your Farm King product as this could affect
function or safety, and could affect the life of the equipment.
• Never start or operate the mower except from the operator’s station on the power unit.
• Inspect and clean the working area before operating.
• Keep hands, feet, clothing, and hair away from moving parts.
• Ensure bystanders are clear of the area before operating.
Start-up Safety
• Do not let inexperienced operators or children run this equipment.
• Place all tractor and machine controls in neutral before starting.
• Operate only with ROPS and seatbelt equipped tractors.
• Do not operate inside a building unless there is adequate ventilation.
• Ensure all shields are in place and in good condition before operating.
• Stay clear of PTO shaft and machine when engaging PTO.
Operation Safety
• Do not permit riders.
• Do not wear loose fitting clothing during operation.
• Never operate over 540 PTO rpm speed.
• Never operate the equipment in the raised position.
Transport Safety
• ReviewTransport Safety instructions in tractor manual before moving.
• Check with local authorities regarding transport on public roads. Obey all applicable laws and
regulations.
• Do not tow equipment that does not have brakes at speeds over 20 mph (32 km/h).
• Do not tow equipment that does not have brakes that, when fully loaded, has a mass (weight)
over 3,300 lb (1,497 kg) and more than 1.5 times the mass (weight) of the towing unit.
• Make sure the SMV (Slow Moving Vehicle) emblem and all the lights and reflectors that are
required by the local highway and transport authorities are in place, are clean, and can be
seen clearly by all overtaking and oncoming traffic.

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Safety - Series II Rotary Cutter
• Never have the equipment in operation during transport.
• Always travel at a safe speed.
Service and Maintenance Safety
• Stop engine, set brake, remove ignition key, and wait for all moving parts to stop before
servicing, adjusting, repairing, or unplugging.
• Support the equipment with blocks or safety stands before working beneath it.
• Follow good shop practices including:
- keep service area clean and dry
- be sure electrical outlets and tools are properly grounded
- use adequate light for the job.
• Replace and secure all shields removed during servicing before operating.
• Use heavy leather gloves to handle sharp objects.
• Check hydraulics regularly for leaks. Use cardboard to look for leaks, and use hand and eye
protection.
• Relieve pressure on hydraulic system before repairing or adjusting.
Storage Safety
• Store the unit in an area away from human activity.
• Do not permit children to play on or around the stored machine.
• Support the frame on stands and blocks to provide a secure base.
Safety Signs
• The following illustration shows the approximate location and detail of safety signs.
• Keep all safety signs clean and legible and replace any that are damaged or missing.
• When original parts are replaced, any safety signs affixed to those parts should be replaced
as well. Replacement safety signs are available from your local dealer.
Installation
• To install safety signs, ensure the installation area is clean and dry. Decide on the exact
position before you remove the backing paper. Remove the smallest portion of the split
backing paper and align over the specified area. Carefully press in place.
• Slowly peel back the remaining paper and smooth the remaining portion in place. Small
air pockets can be pierced with a pin and smoothed out.
• Replace safety sign immediately should it become damaged, torn or illegible. Obtain
replacements from your authorized dealer using the part numbers shown.

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Safety - Series II Rotary Cutter
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Assembly Instructions
3-Point Hitch Mounted Assembly Instructions
1. Mount the hitch assembly (906389/906390) to the deck using the category 1 lift arm pins
(965809/965926) supplied.The bushings (906416/906418) and the 1" I.D. washer (967140 &
907309) should allow the hitch to swivel freely.
2. The ends of the two pivot arms (906380 & 906381) with the offset holes bolt to the hitch using
a 5/8" x 4" bolt and lock nut.The offset should be turned down.The lift arm (906424/906425)
bolts between the ends of the pivot arms and the brackets at the top of the center mount
(816335/816332) using 5/8" x 2" hex bolts and lock nuts. Do not over tighten the lock nuts.The
entire hitch assembly should swivel freely if properly assembled. Assemble chain PTO holder
(909703) to 3-point hitch (906389/906390) using one 3/8" x 1-1/2" hex bolt (86171), lock washer
and hex nut.
3. Bolt the tailwheel arms (816505/815971) to the main body using 5/8" hardware. Assemble the
tailwheel adjustment weldment (816510/815977) to both the body and tailwheel arms using
5/8" x 1-3/4" bolt and hardware.This holds the tailwheel in place and sets the cutting height of
the cutter. Mount 15" wheel (814432) to tailwheel arms using washer and cotter pin (81210 &
967110).
4. Connect the PTO shaft to the gearbox. A snap ring holds on the PTO shafts with a shear pin.
The clutch must be engaged on PTO shafts with a slip clutch as per operating instructions
so the clutch will slip if you hit a hard object. After engaging clutch, bolt the PTO guard
(966502/966102) to the center mount using 5/16" x 3/4" hex bolts, lock washers and hex nuts.
5. Re-check all the fasteners.There should be free movement of all pieces held together by a bolt
and lock nut.
Trailing Model Assembly Instructions
1. Mount the swivel tube assembly (966584/966146) to the cutter deck by bolting to the outside
edge of the deck reinforcement using 1/2" x 1-3/4" hex bolts, lock washers and hex nuts.
2. The wheel yoke (F9434) may be assembled to cutter in two ways:
- Wheels trailing behind mower. Assemble as shown in drawing. Bolt the yoke arms (901051)
to the tube assembly using 1/2" x 2" hex bolts, lock washers and hex nuts with the wheels
turned to the inside of the mower. With the wheels in this position, the control rod clevis
(966525/902341) attaches to the top bracket on the tube assembly as shown in drawing.
Use a 1" I.D. flat washer and a 1/4" x 1-1/2" cotter pin to mount the wheels.
- Wheels forward at side of cutter. Bolt the yoke arms to the tube assembly so the wheels
are on the outside of the cutter. With the wheels in this position, the control rod clevis
(966525/902341) attaches to the bottom bracket on the tube assembly.
3. Bolt the tongue assembly (906414/906415) to the cutter deck using 7/8" x 2-1/2" bolts, lock
washers and hex nuts.The 1-1/4" diameter x 5/8" long bushings (966528/906418) held in place
by a 1" I.D. flat washer (967140/907309) should allow the tongue to swivel.
Assembly - Series II Rotary Cutter