Nortrack 51487, 51488, 51486 User Manual
SAVE THESE INSTRUCTIONS
3-Pt. PTO Finish Mower
Owner’s Manual
WARNING: Read carefully and understand all ASSEMBLY AND OPERATION
INSTRUCTIONS before operating. Failure to follow the safety rules and other basic safety
precautions may result in serious personal injury.
Item #51486, #51487, #51488
Thank you very much for choosing a NorTrac™ product!
For future reference, please complete the owner’s record below:
Serial Number/Lot Date Code: ________________________________
Purchase Date: ____________________________________________
Save the receipt, warranty, and this manual. It is important that you read
the entire manual to become familiar with this product before you begin
using it.
This 3-Pt. PTO Finish Mower is designed for certain applications only.
Northern Tool & Equipment is not responsible for issues arising from
modification or improper use of this product such as an application for
which it was not designed. We strongly recommend that this product not
be modified and/or used for any application other than that for which it
was designed.
For technical questions, please call 1-800-222-5381.
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Table of Contents
Intended Use .......................................................................................................................................... 4
Technical Specifications ...................................................................................................................... 4
Important Safety Information ............................................................................................................... 4
Specific Operation Warnings ............................................................................................................... 6
Assembly Instructions .......................................................................................................................... 9
Before Each Use .................................................................................................................................. 10
Operating Instructions ........................................................................................................................ 11
After Each Use ..................................................................................................................................... 17
Maintenance ........................................................................................................................................ 18
Troubleshooting .................................................................................................................................. 22
Parts Diagram ...................................................................................................................................... 26
Parts List .............................................................................................................................................. 27
Replacement Parts .............................................................................................................................. 28
Limited Warranty ................................................................................................................................. 29
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Intended Use
Item
#51486
#51487
#51488
Product Type
Mower
Mower Type
Finish
Hitch Type
3-point
Category Type
1
Working Width (in.)
48
60
71
1/2
Required HP
20–50
Gearbox (RPM)
540
Cutting Height (in.)
1
3/8
– 4
1/2
Dimensions W x D x H (in.)
48
1/2
x 51
1/8
x 28
7/8
59
1/2
x 55
1/8
x 28
7/8
73
1/4
x 37
7/16
x 22
7/16
The NorTrac 3-Pt. PTO Finish Mower includes a quick coupler PTO driveline shaft and a rear
discharge design, which is an economical choice for use on large homesteads. These NorTrac finish
mowers have widths ranging from 48" to 71
1/2
" for tractors ranging from 20 to 50 HP.
Technical Specifications
Important Safety Information
Read and understand all instructions. Failure to follow all instructions may result in serious injury
or property damage.
The warnings, cautions, and instructions in this manual cannot cover all possible conditions or
situations that could occur. Exercise common sense and caution when using this tool. Always be
aware of the environment and ensure that the mower is used in a safe and responsible manner.
Do not allow persons to operate or assemble the mower until they have read this manual and
have developed a thorough understanding of how it works.
Do not modify this mower in any way. Unauthorized modification may impair the function and/or
safety and could affect the life of the mower. There are specific applications for which the mower
was designed.
Use the right tool for the job. DO NOT attempt to force small equipment to do the work of larger
industrial equipment. There are certain applications for which this equipment was designed. It will
be safer and do a better job at the capacity for which it was intended. DO NOT use this equipment
for a purpose for which it was not intended.
Industrial or commercial applications must follow OSHA requirements.
WORK AREA SAFETY
Inspect the work area before each use. Keep work area clean, dry, free of clutter, and well lit.
Cluttered, wet, or dark work areas can result in injury. Using the mower in confined work areas
may put you dangerously close to other cutting tools and rotating parts.
Do not allow the mower to come into contact with an electrical source. The mower is not insulated
and contact will cause electrical shock.
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Keep children and bystanders away from the work area while operating the mower. Do not allow
children to handle the product.
Be aware of all power lines, electrical circuits, water pipes, and other mechanical hazards in your
work area. Some of these hazards may be hidden from your view and may cause personal injury
and/or property damage if contacted.
PERSONAL SAFETY
Stay alert, watch what you are doing, and use common sense when operating the mower. Do not
use the mower while you are tired or under the influence of drugs, alcohol, or medication. A
moment of inattention while operating the tool may result in serious personal injury.
Dress properly. Do not wear loose clothing, dangling objects, or jewelry. Keep your hair, clothing
and gloves away from moving parts. Loose clothes, jewelry, or long hair can be caught in moving
parts. Air vents on the tool often cover moving parts and should be avoided.
Wear the proper personal protective equipment when necessary. Use ANSI Z87.1 compliant
safety goggles (not safety glasses) with side shields, or when needed, a face shield. Use a dust
mask in dusty work conditions. Also use non-skid safety shoes, hardhat, gloves, dust collection
systems, and hearing protection when appropriate. This applies to all persons in the work area.
Do not overreach. Keep proper footing and balance at all times.
Remove keys or wrenches before connecting the tool to an air supply, power supply, or turning on
the tool. A wrench or key that is left attached to a rotating part of the tool may cause personal
injury.
Secure the work with clamps or a vise instead of your hand when practical. This safety precaution
allows for proper tool operation using both hands.
PRODUCT USE AND CARE
Do not force the mower. Products do a better and safer job when used in the manner for which
they are designed. Plan your work, and use the correct product for the job.
Check for damaged parts before each use. Carefully check that the mower will operate properly
and perform its intended function. Replace damaged or worn parts immediately. Never operate
the product with a damaged part.
Store the mower when it is not in use. Store it in a dry, secure place out of the reach of children.
Inspect the tool for good working condition prior to storage and before re-use.
Use only accessories that are recommended by the manufacturer for use with your product.
Accessories that may be suitable for one product may create a risk of injury when used with
another tool. Never use an accessory that has a lower operating speed or operating pressure
than the tool itself.
Keep guards in place and in working order. Never operate the product without the guards in
place.
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Specific Operation Warnings
ENTANGLEMENT HAZARD
To prevent serious injury or death from the rotating driveline:
DO NOT operate without guards in place.
DO NOT operate higher than 540 RPM.
Keep hands, feet, clothing, and hair away from moving parts.
DO NOT operate without the driveline securely attached at both ends.
DO NOT operate without the driveline shields that turn freely on the driveline.
ROTATING BLADE HAZARD
To prevent serious injury or death when the engine is running and the blades are rotating:
Never allow riders on the tractor or mower.
Keep hands and feet clear from under the deck while operating.
DO NOT operate without deflector/guards in place.
DO NOT stand on or near the implement at any time.
DO NOT stand between the tractor and the implement.
DO NOT operate with bystanders in the mowing area.
Turn the engine off and detach the implement before servicing.
THROWN OBJECT HAZARD
To prevent serious injury or death:
DO NOT operate without all guards in place and in good operating condition.
Stop the blade rotation if bystanders come within 50 feet.
To prevent serious injury or death:
Read and understand the Owner’s Manual before operating, servicing, or repairing equipment.
Stop the engine, remove the key, and set the brake before dismounting the tractor.
Operate from the tractor seat only.
DO NOT operate without guards in place and in good condition.
Never allow riders on equipment.
DO NOT operate or transport on steep inclines.
DO NOT operate with the blade in the raised position.
DO NOT exceed this implement’s maximum speed of 5 MPH. Exceeding this speed may result in
loss of control during transport or braking.
Before mowing, clear debris from the mowing area.
Keep bystanders at least 50 feet away while operating.
DO NOT use if the implement is damaged. Repair before continuing use.
Park and store on a hard, level surface.
Store out of reach of children. Not for use by or around children.
MOVING PARTS HAZARD
To prevent serious injury or death from moving parts:
Close and secure all guards and shields before starting.
Keep hands, feet, hair, and clothing away from moving parts.
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Disconnect and lockout the power source before adjusting or servicing.
DO NOT stand or climb on the machine when operating.
To prevent property damage, check the following before operating this machine, having first stopped
the tractor engine and disengaged the PTO:
1. Check oil levels (if needed, add SAE 90 EP oil).
2. Grease the driveline spiders.
3. Grease all marked points on the machine.
4. Check that all nuts/bolts are snug on the parts which are under the most stress (lines, blades,
front linkage bolts, gear box bolts, etc.).
Safety Label 7: Notice
Oil is NOT included. Before using, add oil to the central gear box. Consult this Manual for lubricating
and operating instructions.
FALLING OFF CAN RESULT IN IMPALEMENT OR BEING RUN OVER.
The tractor must be equipped with a Roll Over Protection Structure (or ROPS CAB) and seat belt.
Keep the foldable ROPS system in “locked up” position at all times.
Keep the seat belt securely fastened.
Never allow riders on equipment.
RAISED EQUIPMENT CAN DROP AND CRUSH.
Before servicing, follow all instructions and safety rules in this Owner’s Manual and securely block
all corners of equipment with jack stands.
Securely blocking prevents equipment dropping due to mechanical component failures.
FALLING OFF OR FAILING TO BLOCK SECURELY CAN RESULT IN SERIOUS INJURY OR
DEATH.
Equipment Safety Guidelines
Operator safety is one of the main concerns in designing and developing a new piece of equipment.
Designers and manufacturers build in as many safety features as possible. However, every year
many accidents occur which could have been avoided by a few seconds of thought and a more
careful approach to handling equipment. You, the operator, can avoid many accidents by observing
the following precautions in this section. To avoid personal injury, study the following precautions and
insist those working with you, or for you, follow them.
In order to provide a better view, certain photographs or illustrations in this manual may show an
assembly with a safety shield removed. However, equipment should never be operated in this
condition. Keep all shields in place. If shield removal becomes necessary for repairs, replace the
shield prior to use.
Never use alcoholic beverages or drugs which can hinder alertness or coordination while operating
this equipment. Consult your doctor about operating this machine while taking prescription
medications.
Review the safety instructions with all users annually. This equipment is dangerous to children and
persons unfamiliar with its operation. The operator should be a responsible adult familiar with farm
machinery and trained in this equipment's operations. Do not allow persons to operate or
assemble this unit until they have read this manual and have developed a thorough
understanding of the safety precautions and of how it works.
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Safety Training
Safety is a primary concern in the design and manufacture of our products. Unfortunately, our efforts
to provide safe equipment can be wiped out by a single careless act of an operator.
In addition to the design and configuration of equipment, hazard control and accident prevention are
dependent upon the awareness, concern, prudence, and proper training of personnel involved in the
operation, transport, maintenance, and storage of equipment.
It is the operator's responsibility to read and understand ALL safety and operating instructions in the
manual and to follow them. Accidents CAN be avoided.
Working with unfamiliar equipment can lead to careless injuries. Read this manual and the manual for
your tractor before assembling or operating your mower, to acquaint yourself with the machines. It is
the rotary mower owner's responsibility if this machine is used by any person other than yourself, to
make certain that the operator, prior to operating:
1. Reads and understands the Owner’s manuals.
2. Is instructed in safe and proper use.
Know the controls and how to stop the tractor, the engine, and the mower quickly in an emergency.
Read this manual and the one provided with your tractor.
Train all new personnel and review instructions frequently with existing workers. A person who has
not read and understood all operating and safety instructions is not qualified to operate the machine.
An untrained operator exposes himself and bystanders to possible serious injury or death.
Do not allow children to operate this machine.
Transport Safety
Comply with state and local laws governing highway safety and movement of farm machinery on
public roads.
The use of flashing amber lights is acceptable in most localities. However, some localities prohibit
their use. Local laws should be checked for all highway lighting and marking requirements.
When driving the tractor and equipment on the road or highway under 20 mph at night or during the
day, use flashing amber warning lights and a slow moving vehicle (SMV) identification emblem.
Always be sure the implement is in the proper raised position for transport.
Reduce speed when transporting mounted implements to avoid bouncing and momentary loss of
steering control.
Plan your route to avoid heavy traffic.
Do not drink and drive!
Watch for traffic when operating near or crossing roadways.
Use extreme care and maintain minimum ground speed when transporting on hillside, over rough
ground, and when operating close to ditches or fences. Be careful when turning sharp corners. Turn
curves or go up or down hills only at a low speed and at a gradual steering angle. Make certain that at
least 20% of the tractor's weight is on the front wheels to maintain safe steerage. Slow down on rough
or uneven surfaces, and loose gravel.
Never allow riders on either tractor or mower.
Be a safe and courteous driver. Always yield to oncoming traffic in all situations like narrow bridges
and intersections.
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Assembly Instructions
1. Attach the rear brace bars to the lugs on the rear of the deck with an M12 bolt and locking nut.
Attach the A-frame bars to the lugs on the front of the mower deck with M12 bolts and locking
nuts. See the following image.
2. Connect all braces at the top of the A-frame with an M12 bolt, spacer, hitch connection, and
locking nut. See the following picture.
3. Install the wheel support braces with M12 bolts and locking nuts as shown below:
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