SAVE THESE INSTRUCTIONS
163cc Concrete Cutter
Owner’s Manual
WARNING: Read and understand all instructions, warnings, and cautions before using this
product. Failure to follow the instructions, warnings, and cautions may result in serious personal
injury and/or property damage.
Item #49157
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Thank you very much for choosing a North Star 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.
This concrete cutter is designed for certain applications only. Northern
Tool and Equipment cannot be responsible for issues arising from
modification or use of this product in 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 ............................................................................................................... 7
Main Parts of Concrete Cutter ............................................................................................................. 8
Before Each Use .................................................................................................................................. 10
Operating the Concrete Cutter........................................................................................................... 11
Start the Engine .............................................................................................................................. 11
Operation ........................................................................................................................................ 11
After Each Use ..................................................................................................................................... 12
Maintenance ........................................................................................................................................ 13
Installing the Saw Blade ................................................................................................................. 14
Setting the Saw Blade Depth .......................................................................................................... 17
Changing the V-Belt ............................................................................................................................ 18
Parts Diagram ...................................................................................................................................... 19
Engine Mount .................................................................................................................................. 19
Blade Shaft ..................................................................................................................................... 21
Adjust Handle ................................................................................................................................. 23
Wheel Shafts .................................................................................................................................. 25
Frame & Water Tank ...................................................................................................................... 26
Troubleshooting .................................................................................................................................. 27
Replacement Parts .............................................................................................................................. 28
Limited Warranty ................................................................................................................................. 29
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Intended Use
This Concrete Cutter is designed to cut concrete, asphalt, or both at the same time. (The cutter is not
designed to cut through concrete with rebar however.) The rotating handle adjusts the cutting depth
from 3.9 in. to 4.7in. The cutter includes a built-in water distribution system that supplies water to both
sides of blade for cooling.
Technical Specifications
Length
37 in. (940 mm)
Width
20.85 in. (530 mm)
Height
33 in. (838 mm)
Blade Rotation
3,200 rpm
Blade Diameter (not included)
12 & 14 in. (305 & 356 mm)
Cutting Depth
3.9 to 4.7 in. (99 to 119 mm)
Depth Adjustment
By Handle Rotation
Travel Mechanism
Manual Push
Blade Cooling
Gravity-Fed Water
Water Tank Capacity
5 gal. (19 Liters)
Weight (shipping)
183 lbs. (83 Kg)
Engine
Honda GX160, 5.5 HP, 163cc
Important Safety Information
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 tool is used in a safe and responsible manner.
DO NOT allow persons to assemble or operate this product until they have read this manual and
have developed a thorough understanding of how the product works.
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
do the job better and more safely 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.
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Some dust created by power sanding, sawing, grinding, drilling, and other construction activities
contains chemicals known to the State of California to cause cancer, birth defects, or other
reproductive harm. Some examples of these chemicals are:
- lead from lead-based paints,
- crystalline silica from bricks and cement and other masonry products, and
- arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you do this type of work. To
reduce your exposure to these chemicals: work in a well-ventilated area, and work with approved
safety equipment, such as dust masks that are specially designed to filter out microscopic
particles.
Handling the power cord on corded products may expose you to lead, a chemical known to the
State of California to cause cancer and birth defects or other reproductive harm. Wash hands
after handling.
WORK AREA SAFETY
Inspect the work area before each use. Keep the work area clean, dry, free of clutter, and well lit.
Cluttered, wet, or dark work areas can result in injury.
Do not use the Concrete Cutter where there is a risk of causing a fire or an explosion; e.g., in the
presence of flammable liquids, gases, or dust. The cutter can create sparks, which may ignite the
flammable liquids, gases, or dust.
Do not allow the Concrete Cutter to come into contact with an electrical source. The cutter is not
insulated and contact will cause electrical shock.
Keep children and bystanders away from the work area while operating the Concrete Cutter. Do
not allow children to handle the cutter.
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 Concrete
Cutter. Do not use the cutter while you are tired or under the influence of drugs, alcohol, or
medication.
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.
Use ANSI Z87.1-approved safety goggles or 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 adjusting keys or wrenches before starting the Concrete Cutter. A wrench or key that is
left attached to a rotating part of the cutter may cause personal injury.
No smoking, matches, or open flames around machine. Fuel is flammable.
Do not touch hot surfaces.
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Equipment can tip over when moving, causing injury.
Persons not operating should be at least 10 feet away while equipment is in use.
Engine exhaust contains carbon monoxide. This is a poison you cannot see or smell. NEVER use
in doors.
Do not operate without guards in place.
Keep feet clear of cutting blade.
CONCRETE CUTTER USE AND CARE
Do not force the Concrete Cutter to perform an operation other than its intended use. Concrete
cutters do a better and safer job when used in the manner for which they are designed. Plan your
work, and use the correct Concrete Cutter for the job.
Check for damaged parts before each use. Carefully check that the Concrete Cutter will operate
properly and perform its intended function. Replace damaged or worn parts immediately. Never
operate the cutter with a damaged part.
Place the power switch in the locked or off position before making any adjustments, changing
accessories, or storing the tool. Such preventive safety measures reduce the risk of starting the
tool accidentally.
Store the Concrete Cutter when it is not in use. Store it in a dry, secure place out of the reach of
children. Inspect the cutter for good working condition prior to storage and before re-use.
Use only accessories that are recommended by the manufacturer for use with the Concrete
Cutter. Accessories that may be suitable for one Concrete Cutter may create a risk of injury when
used with another Concrete Cutter.
Keep guards in place and in working order. Never operate the Concrete Cutter without the guards
in place.
Keep the Concrete Cutter blade clean.
Do not leave the Concrete Cutter running unattended.
Shut off the fuel valve when the engine is not in use.
Only use the recommended fuel to avoid damaging the equipment.
Oil does not come with the machine. Add oil to engine before the first use.
Check oil levels before operating the machine.
DO NOT refuel the engine while it is still hot. Fuel is flammable.
DO NOT service engine while it is still hot.
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Specific Operation Warnings
To avoid fatal accident
Stop the engine before refueling and be careful not to spill fuel during the refueling. Spilled fuel
may ignite causing a fire.
Do not refuel the engine near flammable objects to avoid fire.
Do not run the engine in enclosed areas to prevent carbon monoxide poisoning.
To protect the operator
When fatigue from operation, the operator must stop the machine and take break.
Hearing protection is required as this machine creates a noise emission while 1 m (3 feet) away
from the equipment.
To avoid injury or damage
The Concrete Cutter is only operated by authorized persons who:
- are at least 18 years of age.
- are physically and mentally able to operate the cutter.
- are properly trained in the operation and the maintenance of the cutter by the owner or
authorized representative.
- are assessed to be able to carry out their duties reliably.
People who are drinking alcohol beverages and/or taking drugs are not allowed to operate the
Concrete Cutter.
People are not allowed to enter into the danger zone of the Concrete Cutter (10 feet).
The operator has to monitor the 10 foot danger zone all the time. It is not allowed to operate if
there is a person in the danger zone.
Operate the Concrete Cutter away from other workers because cracked and bounced rock may
injure other workers.
The operator has to give warning signs in case of an emergency situation.
The Concrete Cutter can only be operated when there is adequate stability.
The operator has to control the running speed of the Concrete Cutter all the time during its
operation so that the cutter can be stopped at any time.
The operator must turn off the Concrete Cutter completely as described in this manual before
leaving the operating position. Also, the cutter must be secured against unauthorized use.
The engine has to be turned off and secured against re-starting by pulling out the sparking plug
cap during the maintenance and servicing.
Discovered defects must be reported to supervising personnel and to the operator. Do not leave
the defects which may cause serious injury of the operator.
Do not operate the Concrete Cutter when a defect endangers the safety of the operator until the
defect is rectified.
The Concrete Cutter has to be checked by an expert in regular bases (at least once a year). And
it must be checked by an expert before the initial use and after the essential modification.
The Concrete Cutter generates heat so do not touch the body of engine, muffler or other parts
during operation, which may cause a burn.
The operator must be fully equipped with safety equipment including a crash helmet, safety
gloves, safety shoes, safety glasses and mask before operating the Concrete Cutter.
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Do not insert hands or fingers between pulley cover and engine during operation, this will cause
injury.
Do not transport the Concrete Cutter with fuel in its fuel tank by the motor vehicle.
Do not lift the Concrete Cutter by a person when putting on and off from vehicle. Always use a
proper lifting crane to move. Lifting by person may cause personal injury due to its heavy weight.
Make sure to securely fasten the Concrete Cutter for transportation. Improper fastening as
holding the handle of the cutter during the transportation may cause an injury.
Also refer to the enclosed engine manual if there is a problem or a question on engine. Safety
Labels
Main Parts of Concrete Cutter
01
Height Adjust Handle
14
Engine Base Plate
02
Handle Stopper
15
Engine Muffler
03
Elevator Screw Stopper
16
Belt Cover
04
Water Tank
17
Guide Wheel
05
Water Valve
18
Front Wheel
06
Lift Handle
19
Blade Cover
07
Water Tank Cap
20
Blade Holder
08
Frame
21
Rear Wheel
09
Engine Fuel tank Cap
22
Gauge Pin
10
Handle
23
Engine Recoil Starter
11
Handle Grip
24
Wrench (32/36mm)
12
Engine Stop Switch
25
Throttle lever
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13
Elevate Bar
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