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For technical questions, please call 1-888-866-5797.

Item 59166 

        

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.

1. 

Maintain a firm grip on the power tool and 
position your body and arm to allow you 
to resist kickback forces. Always use side 
handle, if provided, for maximum control over 
kickback or torque reaction during start-up.

 

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2. 

Never place your hand near the rotating 
accessory.

 Accessory may kickback over your hand.

3. 

Do not position your body in the area where 
power tool will move if kickback occurs.

  

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4. 

Use special care when working corners, sharp 
edges etc. Avoid bouncing and snagging the 
accessory.

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have a tendency to snag the rotating accessory 
and cause loss of control or kickback.

5. 

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 Sanding Operations

Do not use excessively oversized sanding disc paper. Follow manufacturer’s recommendations 
when selecting sanding paper.

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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:

1.  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.

2.  Do not smoke during use.  Nicotine reduces 

the blood supply to the hands and fingers, 

increasing the risk of vibration-related injury.

3.  Wear suitable gloves to reduce the 

vibration effects on the user.

4.  Use tools with the lowest vibration when there 

is a choice between different processes.

5.  Include vibration-free periods each day of work.

6.  Grip tool as lightly as possible (while still keeping 

safe control of it).  Let the tool do the work.

7.  To reduce vibration, maintain the tool as 

explained in this manual.  If any abnormal 

vibration occurs, stop use immediately.

 SAVE THESE INSTRUCTIONS.

SAFETY

OPERA

TION

MAINTENANCE

SETUP

Summary of Contents for 21105E-B

Page 1: ...n 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 Copyright 2021 by Harbor Freight Tools All rights reserved No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools Diagrams within this manual may not be ...

Page 2: ...or moderate injury Addresses practices not related to personal injury IMPORTANT SAFETY INFORMATION General Power Tool Safety 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 7KH WHUP ƎSRZHU WRROƎ LQ WKH ZDUQLQJV UHIHUV WR RXU PDLQV RSHUDW...

Page 3: ...W RI LQDWWHQWLRQ ZKLOH RSHUDWLQJ SRZHU WRROV PD UHVXOW LQ VHULRXV SHUVRQDO LQMXU 2 Use safety equipment Always wear eye protection 6DIHW HTXLSPHQW VXFK DV dust mask non skid safety shoes hard hat RU KHDULQJ SURWHFWLRQ XVHG IRU DSSURSULDWH FRQGLWLRQV ZLOO UHGXFH SHUVRQDO LQMXULHV 3 Prevent unintentional starting Ensure the switch is in the off position before connecting to power source and or batte...

Page 4: ...to follow all instructions listed below may result in electric shock fire and or serious injury 2 Operations such as grinding wire brushing polishing or 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 3 Do not use accessories which are not specifically designed and recommended by...

Page 5: ...ower tool near flammable materials 6SDUNV FRXOG LJQLWH WKHVH PDWHULDOV 16 Do not use accessories that require liquid coolants Using water or other liquid coolants may result in electrocution or shock 17 Maintain labels and nameplates on the tool These carry important safety information If unreadable or missing contact Harbor Freight Tools for a replacement 18 Avoid unintentional starting Prepare t...

Page 6: ... a tendency to snag the rotating accessory and cause loss of control or kickback 5 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 Sanding Operations Do not use excessively oversized sanding disc paper Follow manufacturer s recommendations when selecting sanding paper DUJHU VDQGLQJ SDSHU H WHQGLQ...

Page 7: ... user reducing the risk of electric shock See 3 Prong Plug and Outlet 2 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 3 The tool must be plugged int...

Page 8: ...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 8 Protect the extension cords from sharp objects excessive heat and damp or wet areas TABLE A RECOMMENDED MINIMUM WIRE GAUGE FOR EXTENSION CORDS 120 240 VOLT NAMEPLATE AMPERES at full load EXTENSION CORD LENGTH 25 50 75 10...

Page 9: ...AL OPERATION Make sure that the Power Switch is in the off position and unplug the tool from its electrical outlet before performing any procedure in this section Note For additional information regarding the parts listed in the following pages refer to the Assembly Diagram near the end of this manual Components and Controls Extension Shaft Extension Handle Main Handle Speed Control Power Switch M...

Page 10: ...aft 1 Push the Folding Lock to the unlocked position and unfold the two sections of the Main Shaft 2 With the Main Shaft fully open push the tip of the Folding Lock into the mating portion of the Shaft Rotate the Folding Lock to the locked position to secure the Shaft 3 To fold the Main Shaft after use pull the Folding Lock to the unlocked position and fold the Shaft Folding Lock Locked Position M...

Page 11: ...le if using the Extension Shaft as shown 3 Tighten Locking Sleeve by turning it in the direction of the lock symbol on the tool handle 4 Connect the Vacuum Hose Adaptor directly to an industrial vacuum cleaner or dust collection system not included Workpiece and Work Area Set Up 1 Designate a work area that is clean and well lit The work area must not allow access by children or pets to prevent di...

Page 12: ...ower LOW MEDIUM HIGH 6 Press the Power Switch forward to start the Sander Press down on the front of the Switch to lock it ON press down on the rear of the Switch to unlock Pull the Power Switch backward to turn the Sander OFF 7 Use the Speed Control Dial to adjust tool speed 8 Run the Sander briefly at slow speed to ensure the Sanding Disc is properly attached on the Backing Pad 9 To start sandin...

Page 13: ...ring cracked or broken parts any other condition that may affect its safe operation 2 AFTER USE wipe external surfaces of the tool with clean cloth 3 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 4 WARNING TO PREVENT SERIOUS INJURY If the supply cord of this power tool is damaged it must...

Page 14: ... Cords in 5281 1 section Performance decreases over time Carbon brushes worn or damaged Have qualified technician replace brushes Excessive noise or rattling Internal damage or wear Carbon brushes or bearings for example Have technician service tool Overheating 1 Forcing tool to work too fast 2 Blocked motor housing vents 3 Motor being strained by long or small diameter extension cord 1 Allow tool...

Page 15: ... 866 5797 Item 59166 Record Product s Serial Number Here Note If product has no serial number record month and year of purchase instead Note Replacement parts are not available for this item Refer to UPC 193175457783 SAFETY OPERATION MAINTENANCE SETUP ...

Page 16: ...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 merchand...

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