Using CUT-OFF Wheels

WARNING Only use accessories with Maximum Safe Operating Speed rated at least equal to the maximum speed marked on the power tool. This speed is based on the strength of the wheel, allowing for a reasonable mea- sure of safety. It is not meant to imply a best or most efﬁcient operating speed. Do not exceed the Maximum Safe Operating Speed.

Installing/Removing Accessories

Make sure the wheel does not extend beyond the bottom of the guard. Threaded hub grinding wheels

OPERATION

WARNING Always remove battery pack before changing or removing accesso- ries. Only use accessories speciﬁcally recom- mended for this tool. Others may be hazardous.

WARNING To reduce the risk of in- jury, keep hands away from all moving parts. Always wear safety goggles or glasses with side shields.

WARNING Using the face of a Cut-Off Wheel (as in grinding) will cause the Wheel to crack and break, resulting in serious per- sonal injury.

USING GRINDING WHEELS

WARNING To reduce the risk of injury, the operator should be instructed in the use, care and protection of grinding wheels.

USING WIRE BRUSHES

WARNING Everyone in the area must wear protective clothing and safety goggles or face shields. Fatigued wires and residue will ﬂy off the brush with considerable force, causing potential for serious injury.

Wire brushes are useful for removing rust, scale, burrs, weld slag, etc.

Always install wire cup brushes according to the accessory manufacterer’s instructions.

may require a deeper guard (see "Accessories").

1.Remove the battery pack.

2.Properly position the guard (Fig. 2).

Fig. 2

Operator's Zones

3.Wipe the flange, flange nut and spindle to remove dust and debris. Inspect the parts for damage. Replace if needed.

4.Place the ﬂange on spindle, as shown.

Fig. 3

Flange nut

Wheel

Flange

Spindle

5.Place the selected wheel on the spindle and align it with the ﬂange.

6.Position the ﬂange nut over the spindle according to wheel thickness (Fig. 4).

Fig. 4

1/8"

Flange nut position for

1/8" thick or less wheels

1/4"

Flange nut position for

1/4" thick or more wheels

7.Press in the spindle lock button while turning the ﬂange nut clockwise. Tighten securely using a spanner wrench.

8.To remove wheel, remove the battery pack and reverse the procedure.

Controlled Start

The controlled start feature reduces the torque reaction "jerk" when its trigger is pulled.

Paddle Switch Operation

To start the tool, grasp the handle and side handle ﬁrmly. Pull the lock-off button back and squeeze the paddle switch.

To stop the tool, release the paddle switch. Make sure the tool comes to a complete stop before lay- ing the tool down.

General Operation

1.If you have just installed an accessory or are beginning a period of work, test it by letting it spin for one minute before applying it to the workpiece. Out-of-balance or damaged acces- sories can mar workpiece, damage the tool, and cause stress that may cause accessory failure.

2.Use a clamp, vise or other practical means to hold your work, freeing both hands to control the tool.

3.Hold tool securely with both hands.

4.Start the tool.

5.Allow accessory to come to full speed before beginning work.

6.Control pressure and surface contact between accessory and workpiece. Too much pressure slows speed.

If the tool stalls, release the trigger to reset. Lighten pressure to avoid stalling.

7.When ﬁnished, turn off the tool and make sure it comes to a complete stop before laying it down.

WARNING A Type "1" guard must be installed when using a cut-off wheel to provide maximum protection for the operator if the wheel should break.

Type "1" Cut-Off Wheels are suited for small cut-off and shallow notching operations only.

When using a cut-off wheel, hold the tool as shown, using only the edge of the wheel.

Fig. 6

Grinding Wheel Selection

Use grinding wheels, and accessories that are:

•correct size as written on tool’s nameplate.

•rated at or above the RPM listed on the tool’s nameplate.

•correct accessory, wheel type and grit for the job. Grinding is the cutting action of thousands of abra- sive grains on the face of a grinding wheel. When grinding metals such as steel and iron, choose an aluminum oxide grinding wheel. Select a silicon carbide grinding wheel for stone and concrete. Use cotton reinforced wheels for non-ferrous metals.

Type 27 Reinforced 1/8" thick or less Cut-Off Wheels are suited for small cut-off and shallow notching operations only. Always handle wheels carefully to avoid damage. Before installing any wheel, always inspect it for cracks. If wheel is cracked, discard it to prevent others from using it.

Care of Grinding & Cut-Off Wheels

Grinding/cut-off wheels should be protected from:

•wetness and extreme humidity

•any type of solvent

•extreme changes in temperature

•dropping and bumping

Grinding and cut-off wheels should be stored:

•in an organized way so wheels can be removed without disturbing or damaging other wheels

•with their safety information

Grinding and cut-off wheels should NOT be dropped, rolled or bumped.

Discard wheels that have been dropped, rolled, bumped, subjected to extreme changes in tempera- ture, or come into contact with solvents or wetness.

Grinding

When grinding, hold tool at a 5o to 15o angle, using constant pressure for a uniform ﬁnish. Too great an angle causes concentrated pressure on small areas which may gouge or burn work surface.

Fig. 5

Hold at a 5° to 15° angle

For best result use only this portion of disc

Fig. 7

Wire Cup Brush

WARNING Because the wires on wire wheel brushes are directed towards the op- erator, a guard must be used to protect the operator when fatigued wires break.

When using a wire wheel brush, install guard ac- cording to "Installing/Removing Accessories".

Fig. 8	Guard	Wire
		Wheel
		Brush

Test wheel for balance and loose or damaged wires by letting it spin for one minute before applying it to the workpiece. During this time, no one should stand in front of or in line with it.

Control pressure and surface contact between wheel and workpiece. Too much pressure causes over-bending of wires and heat build-up caus- ing premature wire breaking, rapid dulling and reduced brush life. Instead of more pressure, try a wire wheel with more aggressive cutting action (increased wire size, decreased wire length or dif- ferent brush type (knot type vs.crimped wire type).

WARNING Never exceed Maximum Safe Operating Speed of brush. Do not use a damaged brush or one that is functioning improperly (throwing wires, out-of-balance, etc.). These conditions increase the pos- sibility of further brush failure and possible injury. Discard and replace damaged brushes immediately.