Drill Master 91938 Owner'S Manual & Safety Instructions Download Page 5

Page 5

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

Item 91938 

        

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Cut-Off Saw Safety Warnings

For your Own Safety Read Instruction 

Manual Before Operating Cut-Off Saw

1.  Check Swing Guard (53) for proper closing before 

each use.  Do not operate the Saw if the Swing 

Guard does not move freely and close instantly.  

Never clamp or tie the Swing Guard into the open 

position.  If the saw is accidently dropped, the Swing 

Guard may be bent.  Raise the Swing Guard and 

make sure it moves freely and does not touch the 

Cut-Off Wheel or another part, in all depths of cut.

2.  The Swing Guard should be retracted manually 

only for special cuts such as “Pocket Cuts” and 

“Compound Cuts.”  Raise the Swing Guard only 

enough to begin the cut.  As soon as the cut-off 

wheel enters the material, the Swing Guard must 

be released.  For all other sawing, the Swing Guard 

should be allowed to operate automatically.

3.  The Saw is not to be used for any cutting in the 

locked down position.  The Saw should be locked 

down position only for carrying and storage.

4.  Always use cut‑off wheels with a 14″ diameter, 

1″ arbor hole, and rated at a minimum of 3,500 RPM.  

Cut-off wheels that do not match the mounting 

hardware of the Saw or that are rated at less than 

the Saw’s maximum RPM may fly off the Saw or 

may run eccentrically, causing loss of control.

5.  Never use damaged or incorrect cut-off wheel 

washers or bolts.  The cut-off wheel’s washers and 

bolts were specially designed for your Saw, for 

optimum performance and safety of operation.

6.  Do not use the cut-off wheel (sold separately) 

to cut aluminum, copper, brass, or other 

non-ferrous metals.  The cut-off wheel is 

designed to cut only ferrous (iron containing) 

metals such as steel alloys and cast iron.  

If using other cut-off wheels, only use them on 

materials that the manufacturer recommends.

7.  Before using the Cut-Off Saw, make sure 

the cut-off wheel is properly mounted on the 

saw spindle.  Make sure the cut-off wheel 

is balanced and is not broken or bent.

8.  Wear eye protection.
9.  Use grinding wheel suitable for 

speed of cut-off wheel.

10. Replace cracked wheel immediately.
11.  Do not overtighten wheel nut.
12. Use only flanges furnished with the Cut-Off saw.
13. Frequently clean grinding dust 

from beneath Cut-Off saw.

14. Wear a full face shield over ANSI-approved 

safety goggles during use.

15. 

DO NOT OpERATE WITH ANy GUARD 

DISABLED, DAMAGED, OR REMOVED.  Moving 

guards must move freely and close instantly.

16. The use of accessories or attachments not 

recommended by the manufacturer may 

result in a risk of injury to persons.

17. When servicing use only identical replacement parts.
18. 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.

19. Industrial applications must follow OSHA guidelines.
20. Maintain labels and nameplates on the tool.  

These carry important safety information.  

If unreadable or missing, contact 

Harbor Freight Tools for a replacement.

21. Avoid unintentional starting.   

Prepare to begin work before turning on the tool.

22. 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.

23. WARNING: Some dust created by power sanding, 

sawing, grinding, drilling, and other construction 

activities, contains chemicals known to the State 

of California to cause cancer and birth defects or 

other reproductive harm.  Some examples of these 

chemicals are: 

•  Lead from lead-based paints 

•  Crystalline silica from bricks and cement or other 

masonry products 

•  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 those dust masks that are 

specially designed to filter out microscopic particles.  

(California Health & Safety Code § 25249.5, 

et seq.

)

24. WARNING: The cord of this product contains 

lead and/or di (2-ethylhexyl) phthalate (DEHP), 

chemicals known to the State of California 

to cause cancer, and birth defects or other 

reproductive harm. Wash hands after handling.  

(California Health & Safety Code § 25249.5, 

et seq.

)

25. 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.

Summary of Contents for 91938

Page 1: ...place for future reference 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 Copyright 2004 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 ...

Page 2: ...FORMATION General Tool Safety Warnings WARNING 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 1 KEEP GUARDS IN PLACE and in working order 2 REMOVE ADJUSTING KEYS AND WRENCHES Form habit of checking to see that keys and adjusting wrenches are rem...

Page 3: ...SECURE WORK Use vise to hold work when practical It s safer than using your hand and it frees both hands to operate tool 13 DON T OVERREACH Keep proper footing and balance at all times 14 MAINTAIN TOOLS WITH CARE Keep tools sharp and clean for best and safest performance Follow instructions for lubricating and changing accessories 15 DISCONNECT TOOLS before servicing when changing accessories such...

Page 4: ...The conductor with insulation having an outer surface that is green with or without yellow stripes is the equipment grounding conductor If repair or replacement of the electric cord or plug is necessary do not connect the equipment grounding conductor to a live terminal 4 Check with a qualified electrician or service personnel if the grounding instructions are not completely understood or if in do...

Page 5: ... Cut Off saw 14 Wear a full face shield over ANSI approved safety goggles during use 15 DO NOT OPERATE WITH ANY GUARD DISABLED DAMAGED OR REMOVED Moving guards must move freely and close instantly 16 The use of accessories or attachments not recommended by the manufacturer may result in a risk of injury to persons 17 When servicing use only identical replacement parts 18 Only use safety equipment ...

Page 6: ...d 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 gl...

Page 7: ...ameter 14 Recommended Cut Off Wheel Types 14 Cut Off Wheel for Metal Item 44814 sold separately 14 Cut Off Wheel for Masonry Item 44815 sold separately Cutting Capacity 4 1 4 Quick Release Vise Capacities 7 1st Setting 9 1 2 2nd Setting Arbor Size 1 250100 Setup Before Use Functions Base 13 Handle 100 109 Motor Housing 75 Vise Handle 28 Trigger 103 Lock Lock Ball 25 Depth Adjustment Bolt 16 Nut 15...

Page 8: ...ely before performing any inspection maintenance or cleaning procedures To Remove or Install a Cut Off Wheel 1 Raise the Saw if it is locked down by pushing down on it and pulling out the Lock Ball 25 2 Open the Swing Guard 53 and tighten the Bolt 112 to secure it while working on the Wheel 3 Push the Lock Pin 63 towards the Fixed Guard 60 as shown in Figure A Rotate the wheel until the Lock Pin 6...

Page 9: ...e wheel While holding the Lock Pin 63 tighten the Socket Head Bolt 54 with the Hex Key 111a 7 LOOSEN THE BOLT 112 and make sure that the Swing Guard 53 moves freely back into place before operation Depth Adjustment Note The Cutting Depth will need to be adjusted whenever a worn down wheel is replaced with a new one 1 Loosen the Nut 15 on the Depth Adjustment Bolt 16 shown in Figure D Depth Adjustm...

Page 10: ...the Quick Release 31 tab in the position shown in Figure E and push the Vise Handle 28 up against the workpiece Then tighten the Vise Handle 28 When releasing loosen the Vise Handle 28 a few turns lift up the Quick Release 31 and pull the Vise Handle 28 open Vise Handle 28 Place Workpiece Here Quick Release 31 Figure E Vise Components b To cut at various angles up to 45º adjust the Angle Scale 35 ...

Page 11: ...ase letting the Saw do the work Do not apply excessive force 5 If the cut off wheel does not cut all the way through the workpiece raise the Saw and release the Trigger Unplug the unit Wait until the unit comes to a full stop Remove the workpiece Set the depth adjustment to a deeper setting After adjusting the depth bring the Saw all the way down to make sure the cut off wheel doesn t contact the ...

Page 12: ... or cleaning procedures 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 1 BEFORE EACH USE inspect the general condition of the tool Check for loose hardware misalignment or binding of moving parts cracked or broken parts damaged electrical wiring and any...

Page 13: ...needed use shorter heavier gauge cord 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 Carbon brushes or bearings for example Have technician service tool Overheating 1 Forcing machine to work too fast 2 Accessory misaligned 3 Blocked motor housing ve...

Page 14: ... 67 Carbon Brush 68 Carbon Brush Cover 69 Bolt 2 M5x10 70 Cover 71 Bolt 2 M5x10 72 Screw M4x10 73 Lock Washer Part Description 74 Washer 75 Motor Housing 76 Spring 77 Binding Ring 78 Cross Pin 81 Binding Ring 82 Stator 83 Circle Block 84 Bearing 85 Armature 86 Bearing 87 Middle Cover 88 Bearing Ring 89 Binding Ring 90 Gear 91 Front cover 92 Bearing 93 Half Washer 96 Flange Washer 97 Nut M6 98 Bolt...

Page 15: ...Page 15 For technical questions please call 1 888 866 5797 Item 91938 Safety Operation Maintenance Setup 112 Assembly Diagram Note Hex Key 111a not shown ...

Page 16: ...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 o...

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