OPERATION

GRINDING AND SANDING

See Figures 4 - 5.

Always carefully select and use grinding wheels that are

recommended for the material to be ground.

Make sure that the minimum operating speed of any

accessory wheel selected is not less than 11,000 RPM.

The grinding wheel provided with the angle grinder is suit-

able for grinding welds, preparing surfaces to be welded,

grinding structural steel, and grinding stainless steel.

Secure all work before beginning any operation.

Secure small workpieces in a vise or clamp to a work-

TO

TIGHTEN

TO

LOOSEN

GRINDING

WHEEL

WRENCH

FLANGE

NUT

bench.

The key to efficient operation is by controlling the pres-

sure and surface contact between the grinding wheel and

workpiece.

Flat surfaces are ground at an acute angle, normally

between 5° and 15°.

For maximum control, hold the angle grinder in front and

away from you with both hands, keeping the grinding

wheel clear of the workpiece.

Start the angle grinder and let the motor and grinding

wheel build up to full speed.

Gradually lower angle grinder until the grinding wheel

contacts the workpiece.

For best results keep the angle grinder tilted at an angle

from 5° and 15° and continuously moving at a steady,

consistent pace.

Move the angle grinder back and forth or up and down

over the work area.

Keep the angle grinder moving so that an excessive

amount of material is not removed from one area.

If the angle grinder is held in one spot too long, it will

gouge and cut grooves in the workpiece.

If the angle grinder is held at too sharp an angle, it will

also gouge the workpiece because of concentration of

pressure on a small area.

Use just enough pressure to keep the angle grinder from

chattering or bouncing. Heavy pressure will decrease its

speed and put a strain on the motor.

Normally the weight of the tool alone is adequate for most

grinding jobs.

Use light pressure when grinding jagged edges or loose

bolts where there is the potential for the angle grinder to

snag on the metal edge.

Lift the angle grinder away from the workpiece before

turning the angle grinder off.

NOTE: Only the grinding wheel is included with this tool.

DISC

SPINDLE

FLANGE

 

FLAT(S) SPINDLE

LOCK BUTTON

Fig. 4

5° TO 15°

Fig. 5

WARNING:

Before performing any adjustment, make sure the tool is unplugged from the power supply and the switch is in the OFF ( O ) position. Failure to heed this warning could result in serious personal injury.

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Ryobi AG402 manual Grinding and Sanding, See Figures 4, Tighten Loosen Grinding Wheel Wrench Flange NUT