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OPERATOR'S MANUAL
4 in. (100 mm) Angle Grinder
Model AG401 / 

Double Insulated

983000-031
      5-05

RYOBI TECHNOLOGIES, INC.

1428 Pearman Dairy Road

Anderson SC 29625

Post Office Box 1207

Anderson SC 29622

Phone 1-800-525-2579

www.ryobitools.com

EXTENSION CORD CAUTION

When using a power tool at a considerable distance from a power
source, be sure to use an extension cord that has the capacity to
handle the current the tool will draw. An undersized cord will cause
a drop in line voltage, resulting in overheating and loss of power.
Use the chart to determine the minimum wire size required in an
extension cord. Only round jacketed cords should be used.

When working with a tool outdoors, use an extension cord that is
designed for outside use. This is indicated by the letters "WA" on
the cord's jacket.

Before using any extension cord, inspect it for loose or exposed
wires and cut or worn insulation.

**Ampere rating

    (on tool data plate)

0-2.0

2.1-3.4

3.5-5.0

5.1-7.0

7.1-12.0 12.1-16.0

Cord Length

Wire Size (A.W.G.)

25'

16

16

16

16

14

14

50'

16

16

16

14

14

12

100'

16

16

14

12

10

      CAUTION: 

Keep the extension cord clear of the working

area. Position the cord so that it will not get caught on workpiece,
tools, or other obstructions while you are working with a power
tool.

**Used on 12 gauge - 20 amp circuit.

• SERVICE

Now that you have purchased your tool, should a need ever exist for repair parts or service,
simply contact your nearest Ryobi Authorized Service Center. Be sure to provide all
pertinent facts when you call or visit. Please call 1-800-525-2579 for your nearest Ryobi
Authorized Service Center. You can also check our web site at www.ryobitools.com for a
complete list of Authorized Service Centers.

• MODEL NO.

The model number of your tool will be found on a plate attached to the motor housing.
Please record the model number and serial number in the space provided below.

MODEL NUMBER

    AG401

SERIAL NUMBER

Summary of Contents for AG401

Page 1: ...CAUTION Carefully read through this entire operator s manual before using your new angle grinder Pay close attention to the Rules for Safe Operation Warnings and Cautions If you use your grinder prop...

Page 2: ...uble insulated system is intended to protect the user from shock resulting from a break in the tool s internal wiring Observe all normal safety precautions related to avoiding electrical shock DOUBLE...

Page 3: ...for misalignment or binding of moving parts breakage of parts and any other condi tion that may affect the tool s operation If dam aged have the tool serviced before using Many accidents are caused b...

Page 4: ...mmended If in doubt use the next heavier gage The smaller the gage number the heavier the cord An undersized cord will cause a drop in line voltage resulting in loss of power and overheating Use only...

Page 5: ...nstruction activities contains chemicals known to cause cancer birth defects or other reproductive harm Some examples of these chemicals are lead from lead based paints crystalline silica from bricks...

Page 6: ...your attention to possible dangers The safety symbols and the explanations with them deserve your careful attention and understanding The safety warnings do not by themselves eliminate any danger The...

Page 7: ...is 120 volts 60Hz AC only normal household current Do not operate this tool on direct current DC A substantial voltage drop will cause a loss of power and the motor will overheat If your tool does not...

Page 8: ...be used during all grinding operations In addition to maintaining safe control during use the side handle also provides convenient ease of operation for the operator Spindle Lock Button The spindle l...

Page 9: ...ock button and rotate clamp nut until spindle locks Loosen and remove clamp nut from spindle Do not remove disc flange Make sure flats on the bottom of disc flange are engaged with flats on spindle Pl...

Page 10: ...sparks and loose particles thrown from the grinding wheel would be directed toward the operator Always place the guard in the correct location as shown in figures 4 and 5 WARNING Always wear safety g...

Page 11: ...on the rear portion of the button Button will then disengage from the locked position GRINDING See Figure 8 Always carefully select and use grinding wheels that are recommended for the material to be...

Page 12: ...r loosen the clamp screw until the guard can be adjusted or removed If you are making adjustments rotate the guard to its correct position as shown in figures 4 5 and 9 then retighten clamp screw secu...

Page 13: ...ve dirt carbon dust etc WARNING Do not at any time let brake fluids gasoline petroleum based products penetrating oils etc come in contact with plastic parts They contain chemicals that can damage wea...

Page 14: ...r exposed wires and cut or worn insulation Ampere rating on tool data plate 0 2 0 2 1 3 4 3 5 5 0 5 1 7 0 7 1 12 0 12 1 16 0 Cord Length Wire Size A W G 25 16 16 16 16 14 14 50 16 16 16 14 14 12 100 1...

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