HERCULES HE64 1/4 Inch Die Grinder Owner’s Manual

: June 25, 2024
: Hercules

HERCULES HE64 1/4 Inch Die Grinder

Product Information

Specifications

Model: He64
Type: 1/4 Die Grinder
Reference Number: 56932

Product Usage Instructions

Safety Setup
IMPORTANT SAFETY INFORMATION
General Power Tool Safety Warnings:

Read all safety warnings and instructions carefully.
Failure to follow the warnings may result in electric shock, fire, or serious injury.
Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mains-operated (corded) power tool.

Work Area Safety

Keep the work area clean and well lit to prevent accidents.
Avoid operating power tools in explosive atmospheres.
Keep children and bystanders away while operating the tool.

Electrical Safety

Ensure power tool plugs match the outlet and are unmodified.
Avoid body contact with grounded surfaces.
Do not expose the tool to rain or wet conditions.
Avoid abusing the cord and use suitable extension cords for outdoor use.
If operating in damp locations, use a Ground Fault Circuit Interrupter (GFCI) protected supply.

Personal Safety

Stay alert and use common sense when operating the power tool.
Always wear appropriate safety equipment like eye protection.
Prevent unintentional starting by ensuring the switch is off before connecting to power source.
Remove any adjusting key or wrench before turning the power tool on.

FAQ

Q: What should I do if any parts are missing or broken?
A: Please call 18888665797 as soon as possible and reference the model number 56932 for assistance.

Owner’s Manual & Safety Instructions

1/4″ Die Grinder
Warning : to prevent serious injury, user must read and understand Owner’s Manual. Save this Manual.
When unpacking, make sure that the product is intact and undamaged. If any parts are missing or broken, please call 1-888-866-5797 as soon as possible. Reference 56932

IMPORTANT SAFETY INFORMATION

General Power Tool Safety Warnings

Warnings

read all safety warnings and instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury. Save all warnings and instructions for future reference.
The term ″power tool″ in the warnings refers to your mains-operated (corded) power tool.

Work Area Safety

Keep work area clean and well lit. Cluttered or dark areas invite accidents.
Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.
Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.

Electrical Safety

power tool plugs must match the outlet. never modify the plug in any way.
Do not use any adapter plugs with grounded power tools. Unmodified plugs and matching outlets will reduce risk of electric shock.
Avoid body contact with grounded surfaces such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is grounded.
Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
Do not abuse the cord. never use the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.
When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
if operating a power tool in a damp location is unavoidable, use a Ground Fault circuit interrupter (GFci) protected supply. Use of a GFCI reduces the risk of electric shock.

Personal Safety

Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury.
use safety equipment. always wear eye protection. Safety equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.
prevent unintentional starting. ensure the switch/trigger is in the off-position before connecting to power source and/ or battery pack, picking up or carrying the tool. Carrying power tools with your finger on the switch or energizing power tools that have the switch on invites accidents.
Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result in personal injury.
Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.
Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing and gloves away from moving parts. Loose clothes, jewelry or long hair can be caught in moving parts.
if devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of these devices can reduce dust-related hazards.
Only use safety equipment that has been approved by an appropriate standards agency. Unapproved safety equipment may not provide adequate protection. Eye protection must be ANSI-approved and breathing protection must be NIOSH-approved for the specific hazards in the work area.

Power Tool Use and Care

Do not force the power tool. use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed.
Do not use the power tool if the switch/trigger does not turn it on and off.
Any power tool that cannot be controlled with the switch/trigger is dangerous and must be repaired.
Disconnect the plug from the power source before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of untrained users.
Maintain power tools. check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool’s operation. if damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.
Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
Use the power tool, accessories and tool bits etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from those intended could result in a hazardous situation.

Service

Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained.
Maintain labels and nameplates on the tool. These carry important safety information. If unreadable or missing, contact Harbor Freight Tools for a replacement.

Safety Warnings Common for Grinding, Sanding, Wire Brushing, or Polishing Operations

This power tool is intended to function as a grinder, sander, wire brush, or polisher. read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.
Operations such as cutting-off are not recommended to be performed with this power tool. Operations for which the power tool was not designed may create a hazard and cause personal injury.
Do not use accessories which are not specifically designed and recommended by the tool manufacturer. Just because the accessory can be attached to your power tool, it does not assure safe operation.
The rated speed of the accessory must be at least equal to the maximum speed marked on the power tool. Accessories running faster than their RATED SPEED can break and fly apart.
The outside diameter and the thickness of your accessory must be within the capacity rating of your power tool. Incorrectly sized accessories cannot be adequately guarded or controlled.
The arbor size of wheels, flanges, backing pads or any other accessory must properly fit the spindle of the power tool. Accessories with arbor holes that do not match the mounting hardware of the power tool will run out of balance, vibrate excessively and may cause loss of control.
Do not use a damaged accessory. Before each use inspect the accessory such as backing pad for cracks, tear or excess wear, wire brush for loose or cracked wires. if power tool or accessory is dropped, inspect for damage or install an undamaged accessory. after inspecting and installing an accessory, position yourself and bystanders away from the plane of the rotating accessory and run the power tool at maximum no-load speed for one minute. Damaged accessories will normally break apart during this test time.
Wear personal protective equipment. Depending on application, use face shield, safety goggles or safety glasses. as appropriate, wear dust mask, hearing protectors, gloves and workshop apron capable of stopping small abrasive or workpiece fragments. the eye protection must be capable of stopping flying debris generated by various operations. The eye protection must be capable of stopping flying debris generated by various operations. The dust mask or respirator must be capable of filtering out particles generated by your operation. Prolonged exposure to high intensity noise may cause hearing loss.
Keep bystanders a safe distance away from work area. anyone entering the work area must wear personal protective equipment. Fragments of workpiece or of a broken accessory may fly away and cause injury beyond immediate area of operation.
Hold power tool by insulated gripping surfaces only, when performing an operation where the accessory may contact hidden wiring or its own cord. An accessory contacting a ″live″ wire may make exposed metal parts of the power tool ″live″ and shock the operator.
position the cord clear of the spinning accessory. If you lose control, the cord may be cut or snagged and your hand or arm may be pulled into the spinning accessory.
always hold the tool firmly in your hand(s) during the start-up. The reaction torque of the motor, as it accelerates to full speed, can cause the tool to twist.
use clamps to support workpiece whenever practical. never hold a small workpiece in one hand and the tool in the other hand while in use. Clamping a small workpiece allows you to use your hand(s) to control the tool. Round material such as dowel rods, pipes or tubing have a tendency to roll while being cut, and may cause the bit to bind or jump toward you.
never lay the power tool down until the accessory has come to a complete stop. The spinning accessory may grab the surface and pull the power tool out of your control.
after changing the bits or making any adjustments, make sure the collet nut, chuck or any other adjustment devices are securely tightened. Loose adjustment devices can unexpectedly shift, causing loss of control, loose rotating components will be violently thrown.
Do not run the power tool while carrying it at your side. Accidental contact with the spinning accessory could snag your clothing, pulling the accessory into your body.
regularly clean the power tool’s air vents. The motor’s fan will draw the dust inside the housing and excessive accumulation of powdered metal may cause electrical hazards.
Do not operate the power tool near flammable materials. Sparks could ignite these materials.
Do not use accessories that require liquid coolants. Using water or other liquid coolants may result in electrocution or shock.
Avoid unintentional starting. Prepare to begin work before turning on the tool.
Do not leave the tool unattended when it is plugged into an electrical outlet. Turn off the tool, and unplug it from its electrical outlet before leaving.
Use clamps (not included) or other practical ways to secure and support the workpiece to a stable platform. Holding the work by hand or against your body is unstable and may lead to loss of control and personal injury.
This product is not a toy. Keep it out of reach of children.
People with pacemakers should consult their physician(s) before use. Electromagnetic fields in close proximity to heart pacemaker could cause pacemaker interference or pacemaker failure. In addition, people with pacemakers should:
- Avoid operating alone.
- Do not use with power switch locked on.
- Properly maintain and inspect to avoid electrical shock.
- Properly ground power cord. Ground Fault Circuit Interrupter (GFCI) should also be implemented – it prevents sustained electrical shock.
The warnings, precautions, and instructions discussed in this instruction manual cannot cover all possible conditions and situations that may occur. It must be understood by the operator that common sense and caution are factors which cannot be built into this product, but must be supplied by the operator.

Kickback and Related Warnings

Kickback is a sudden reaction to a pinched or snagged rotating wheel, backing pad, brush or any other accessory. Pinching or snagging causes rapid stalling of the rotating accessory which in turn causes the uncontrolled power tool to be forced in the direction opposite of the accessory’s rotation at the point of the binding. For example, if an abrasive wheel is snagged or pinched by the workpiece, the edge of the wheel that is entering into the pinch point can dig into the surface of the material causing the wheel to climb out or kick out. The wheel may either jump toward or away from the operator, depending on direction of the wheel’s movement at the point of pinching. Abrasive wheels may also break under these conditions. Kickback is the result of power tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below.

Maintain a firm grip on the power tool and position your body and arm to allow you to resist kickback forces. always use auxiliary handle, if provided, for maximum control over kickback or torque reaction during start-up. The operator can control torque reactions or kickback forces, if proper precautions are taken.
Never place your hand near the rotating accessory. Accessory may kickback over your hand
Do not position your body in the area where power tool will move if kickback occurs. Kickback will propel the tool in direction opposite to the wheel’s movement at the point of snagging.
Use special care when working corners, sharp edges etc. avoid bouncing and snagging the accessory. Corners, sharp edges or bouncing have a tendency to snag the rotating accessory and cause loss of control or kickback.
Do not attach a saw chain woodcarving blade or toothed saw blade. Such blades create frequent kickback and loss of control.

Safety Warnings Specific for Grinding

For threaded abrasive cones and plugs use only undamaged wheel mandrels with an unrelieved shoulder flange that are of correct size and length. Proper mandrels will reduce the possibility of breakage.
Do not position your hand in line with and behind the rotating accessory. When the accessory, at the point of operation, is moving away from your hand, the possible kickback may propel the spinning accessory and the power tool directly at you.

Safety Warnings Specific for Sanding Operations
Do not use excessively oversized sanding disc paper. Follow manufacturer’s recommendations when selecting sanding paper. Larger sanding paper extending beyond the sanding pad presents a laceration hazard and may cause snagging, tearing of the disc or kickback.

Safety Warnings Specific for Wire Brushing Operations

Be aware that wire bristles are thrown by the brush even during ordinary operation. Do not overstress the wires by applying excessive load to the brush. The wire bristles can easily penetrate light clothing and/or skin.
if the use of a guard is recommended for wire brushing, do not allow any interference of the wire wheel or brush with the guard. Wire wheel or brush may expand in diameter due to work load and centrifugal forces.

Vibration Safety

This tool vibrates during use. Repeated or long-term exposure to vibration may cause temporary or permanent physical injury, particularly to the hands, arms and shoulders. To reduce the risk of vibration-related injury:

Anyone using vibrating tools regularly or for an extended period should first be examined by a doctor and then have regular medical check-ups to ensure medical problems are not being caused or worsened from use. Pregnant women or people who have impaired blood circulation to the hand, past hand injuries, nervous system disorders, diabetes, or Raynaud’s Disease should not use this tool. If you feel any medical or physical symptoms related to vibration (such as tingling, numbness, and white or blue fingers), seek medical advice as soon as possible.
Do not smoke during use. Nicotine reduces the blood supply to the hands and fingers, increasing the risk of vibration-related injury.
Wear suitable gloves to reduce the vibration effects on the user.
Use tools with the lowest vibration when there is a choice between different processes.
Include vibration-free periods each day of work.
Grip tool as lightly as possible (while still keeping safe control of it). Let the tool do the work.
To reduce vibration, maintain the tool as explained in this manual. If any abnormal vibration occurs, stop use immediately.
Save these instructions.

GROUNDING

WARNING

TO PREVENT ELECTRIC SHOCK AND DEATH FROM INCORRECT GROUNDING WIRE CONNECTION: Check with a •qualified electrician if you are in doubt as to whether the outlet is properly grounded. Do not modify the power cord plug provided with the tool. never remove the grounding prong from the plug. Do not use the tool if the power cord or plug is damaged. if damaged, have it repaired by a service facility before use. if the plug will not fit the outlet, have a proper outlet installed by a qualified electrician.

Grounded Tools: Tools with Three Prong Plugs

Tools marked with “Grounding Required” have a three wire cord and three prong grounding plug. The plug must be connected to a properly grounded outlet. If the tool should electrically malfunction or break down, grounding provides a low resistance path to carry electricity away from the user, reducing the risk of electric shock. (See 3-prong plug and Outlet.)
The grounding prong in the plug is connected through the green wire inside the cord to the grounding system in the tool. The green wire in the cord must be the only wire connected to the tool’s grounding system and must never be attached to an electrically “live” terminal. (See 3-prong plug and Outlet.)
The tool must be plugged into an appropriate outlet, properly installed and grounded in accordance with all codes and ordinances. The plug and outlet should look like those in the preceding illustration.(See 3-prong plug and Outlet.)

Double Insulated Tools: Tools with Two Prong Plugs

Tools marked “Double Insulated” do not require grounding. They have a special double insulation system which satisfies OSHA requirements and complies with the applicable standards of Underwriters Laboratories, Inc., the Canadian Standard Association, and the National Electrical Code.
Double insulated tools may be used in either of the 120 volt outlets shown in the preceding illustration. (See Outlets for 2-prong plug.)

Extension Cords

Grounded tools require a three wire extension cord. Double Insulated tools can use either a two or three wire extension cord.
As the distance from the supply outlet increases, you must use a heavier gauge extension cord. Using extension cords with inadequately sized wire causes a serious drop in voltage, resulting in loss of power and possible tool damage. (See table a.)
The smaller the gauge number of the wire, the greater the capacity of the cord. For example, a 14 gauge cord can carry a higher current than a 16 gauge cord. (See table a.)
When using more than one extension cord to make up the total length, make sure each cord contains at least the minimum wire size required. (See table a.)
If you are using one extension cord for more than one tool, add the nameplate amperes and use the sum to determine the required minimum cord size. (See table a.)
If you are using an extension cord outdoors, make sure it is marked with the suffix “W-A” (“W” in Canada) to indicate it is acceptable for outdoor use.
Make sure the extension cord is properly wired and in good electrical condition. Always replace a damaged extension cord or have it repaired by a qualified electrician before using it.
Protect the extension cords from sharp objects, excessive heat, and damp or wet areas.

**table a: recommended Minimum Wire Gauged For extension cords* (120/240 Volta)**

nameplate

aMpereS

(at full load)

| extension cord Length
25´| 50´| 75´| 100´| 150´
0 – 2.0| 18| 18| 18| 18| 16
2.1 – 3.4| 18| 18| 18| 16| 14
3.5 – 5.0| 18| 18| 16| 14| 12
5.1 – 7.0| 18| 16| 14| 12| 12
7.1 – 12.0| 18| 14| 12| 10| ‑
12.1 – 16.0| 14| 12| 10| ‑| ‑
16.1 – 20.0| 12| 10| ‑| ‑| ‑

Based on limiting the line voltage drop to five volts at 150% of the rated amperes.

Symbology

$HERCULES-HE64-1-4-Inch-Die Grinder- $4$$

Warning Symbols and Definitions

DANGER This is the safety alert symbol. it is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.
WARNING Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
CAUTION Indicates a hazardous situation which, if not avoided, could result in death or serious injury. indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE Addresses practices not related to personal injury.

Specifications

Electrical Rating	120 VAC / 60 Hz / 4 A
No Load Speed	n 25,000/min
Max. Accessory Diameter	3″ (80 mm)
Collet Hole Diameter	1/4″

SET UP – BEFORE USE
read the entire important Safety information section at the beginning of this manual including all text under subheadings therein before set up or use of this product.

Functional Description

OPERATING INSTRUCTIONS

read the entire iMPORTANT Safety information section at the beginning of this manual including all text under subheadings therein before set up or use of this product.

Tool Set Up

WARNING
TO preVent SeriOuS inJury FrOM acciDentaL OperatiOn: Make sure that the Switch is in the OFF position and unplug the tool from its electrical outlet before performing any procedure in this section.
CAUTION
TO preVent inJury: Wear heavy-duty work gloves when handling wire wheels and brushes. these accessories are sharp and can cause injury.

Installing Accessories

The accessory MUST be:
Rated to at least 25,000 RPM.
No larger than 3″ (80 mm) in diameter.
Fitted with a 1/4″ mandrel.
Undamaged.
A sander, polisher, wire brush or grinding wheel (accessories not included).
Hold Spindle with included Small Wrench, while turning Collet Nut with included Large Wrench to loosen.
Insert accessory’s mandrel into Collet at least 5/8″.
Using the Wrenches, securely tighten the Collet.

Workpiece and Work Area Set Up

Designate a work area that is clean and well-lit. The work area must not allow access by children or pets to prevent distraction and injury.
Route the power cord along a safe route to reach the work area without creating a tripping hazard or exposing the power cord to possible damage. The power cord must reach the work area with enough extra length to allow free movement while working.
Secure loose workpieces using a vise or clamps (not included) to prevent movement while working.
There must not be hazardous objects, such as utility lines or foreign objects, nearby that will present a hazard while working.
You must use personal safety equipment including, but not limited to, ANSI-approved eye and hearing protection, as well as heavy-duty work gloves.
Before beginning work, provide for sparks and debris that will fly off the work surface.

General Operation

TO preVent SeriOuS inJury: Grip the tool firmly in both hands.

Make sure that Power Switch is in the off-position, then plug in the tool.
Slide Power Switch to ON “I” position.
Allow tool to come up to full speed before touching the work surface.
Apply the accessory to the work surface,\ allowing tool to operate at full speed. If tool bogs down, use lighter pressure.
To create a smoother surface, keep the accessory moving over the work surface.
Slide Power Switch to OFF “O” position to stop tool.
Allow tool to come to a complete stop before setting it down.
To prevent accidents, turn off tool and disconnect its power supply after use. Clean, then store tool indoors out of children’s reach.

Grinding and Wire Brushing Instructions

TO prevent Serious injury’s: Grip the tool firmly in both hands.

Make sure that Power Switch is in the off-position, then plug in the tool.
Slide Power Switch to ON “I” position.
Allow tool to come up to full speed before touching the work material.
Apply the wheel to the work material at a 10° – 15° angle, allowing tool to operate at full speed. If tool bogs down, use lighter pressure.
To create a smoother surface, keep the tool moving over the work surface.
Slide Power Switch to OFF “O” position to stop tool.
Allow tool to come to a complete stop before setting it down.
To prevent accidents, turn off tool and disconnect its power supply after use. Clean, then store tool indoors out of children’s reach.

Sanding Instructions

WARNING

TO preVent SeriOuS inJury: Grip the tool firmly in both hands.

Wipe work surface clean of all dirt and debris.
Attach twist-lock backing pad and sanding disc (both sold separately).
Make sure that Power Switch is in the off-position, then plug in the tool.
Slide Power Switch to ON “I” position.
Allow tool to come up to full speed b efore touching the work material.
Keep heavy pressure off of tool when operating. Allow tool to do the work.
Move tool in a uniform pattern up and down or side to side while sanding to ensure even sanding.
Periodically, stop tool and check for disc wear. Replace worn sanding discs as needed.
Slide Power Switch to OFF “O” position to stop tool.
Allow tool to come to a complete stop before setting it down.
To prevent accidents, turn off tool and disconnect its power supply after use. Clean, then store tool indoors out of children’s reach.

MAINTENANCE AND SERVICING

Procedures not specifically explained in this manual must be performed only by a qualified technician.

WARNING

To prevent Serious injury’s FrOM accidental OperatiOn:
Make sure that the Switch is in the off-position and unplug the tool from its electrical outlet before performing any procedure in this section. tO preVent SeriOuS inJury
FrOM tOOL FaiLure:
Do not use damaged equipment. if abnormal noise or vibration occurs, have the problem corrected before further use.

Cleaning, Maintenance, and Lubrication

Before each use, inspect the general condition of the tool. Check for:
- loose hardware,
- misalignment or binding of moving parts,
- damaged cord/electrical wiring,
- cracked or broken parts, and
- any other condition that may affect its safe operation.
After use, wipe external surfaces of the tool with clean cloth.
Periodically, wear ANSI-approved safety goggles and NIOSH-approved breathing protection and blow dust and grit out of the motor\ vents using dry compressed air.
Warning! tO prevent Serious injury: If the supply cord of this power tool is damaged, it must be replaced only by a qualified service technician.

Accessory Storage and Handling

Handle accessories carefully to prevent dropping or bumping. Do not use wheels that have been dropped or bumped.
Store accessories in shelves, racks, boxes, or drawers. Keep storage area dry and above freezing. Any grinding or cut-off wheels exposed to humidity or freezing temperatures must not be used.

Troubleshooting

problem	possible causes	Likely Solutions
Tool will not start.

Cord not connected.
No power at outlet.
__ Internal damage or wear. (Power Switch, for example.)

|

Check that cord is plugged in.
Check power at outlet.
If outlet is unpowered, turn off tool and check circuit breaker. If breaker is tripped, make sure circuit is right capacity for tool and circuit has no other loads.
Have technician service tool.

Tool operates slowly.|

Excess pressure applied to workpiece.
Power being reduced by long or small diameter extension cord.

|

Decrease pressure, allow tool to do the work.
Eliminate use of extension cord.
If an extension cord is needed, use one with the proper diameter for its length and load. See Extension Cords in GROUNDING section.

Performance decreases over time.| Carbon brushes worn or damaged.| Have qualified technician replace brushes.
Excessive noise or rattling.| Internal damage or wear. (Bearings, for example.)| Have technician service tool.
Overheating.|

Forcing tool to work too fast.
Blocked motor housing vents.
Motor being strained by long or small diameter extension cord.

|

Allow tool to work at its own rate.
Wear ANSI‑approved safety goggles and NIOSH‑approved dust mask/ respirator while blowing dust out of motor using compressed air.
Eliminate use of extension cord. If an extension cord is needed, use one with the proper diameter for its length and load. See Extension Cords in GROUNDING section.

Tool does not operate effectively.|

Accessory loose.
Accessory damaged, worn or wrong type for the material.

|

Confirm accessory mandrel is correct and Collet Nut is tight.
Check condition and type of accessory.
Use only proper type of accessory in good condition.

__**Follow all safety precautions whenever diagnosing or servicing the tool. Disconnect power supply before service.**

record product’s Serial number Here:
note: If product has no serial number, record month and year of purchase instead. note: Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts. Specify UPC 193175545404 when ordering parts.

LIMITED 90 DAY WARRANTY

Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of 90 days from the date of purchase. This warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity, improper installation, normal wear and tear, or to lack of maintenance.
We shall in no event be liable for death, injuries to persons or property, or for incidental, contingent, special or consequential damages arising from the use of our product. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with transportation charges prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise.
If our inspection verifies the defect, we will either repair or replace the product at our election or we may elect to refund the purchase price if we cannot readily and quickly provide you with a replacement. We will return repaired products at our expense, but if we determine there is no defect, or that the defect resulted from causes not within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.

26677 agoura road • calabasas, ca 91302 • 1-888-866-5797