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Page 12

GUARD REPLACEMENT

See Figure 9.

After extended use, the guard may become worn and need
adjustments or replacing. If you drop your grinder and
damage the guard it may also be necessary for you to
replace it.

PROCEED AS FOLLOWS WHEN REPLACEMENT IS
REQUIRED:

Unplug your grinder.

WARNING:

Failure to unplug your grinder could result in accidental
starting causing serious injury.

Remove and reassemble parts as shown in figure 9.

Depress spindle lock button and rotate clamp nut until
spindle locks.

Using the wrench provided, loosen and remove clamp
nut from spindle.

Remove accessory wheel and disc flange.

Using a screwdriver, 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 securely

Never use your grinder

without the guard in place and properly adjusted.
See Figures 4 and 5.

Note: Be sure the tabs on the guard are seated in the
groove in the bearing cap.

If you are replacing the guard, loosen the clamp screw
until the guard can be removed from the bearing cap.

Place the new guard on the shoulder of the bearing cap.
See Figure 9.

Note: If the new guard will not fit, loosen the clamp
screw until they slide over the bearing cap.

Rotate guard to the correct position as shown in figure 9.

Tighten clamp screw securely.

Note: Be sure the tabs on the guard are seated in the
groove in the bearing cap.

WRENCH

CLAMP

NUT

GRINDING

WHEEL

GUARD

DISC

FLANGE

CLAMP

SCREW

TO

LOOSEN

TO

TIGHTEN

FLAT(S)

SPINDLE

LOCK BUTTON

SPINDLE

BEARING CAP

Fig. 9

WARNING:  

When servicing use only identical Ryobi replacement
parts. Use of any other parts may create a hazard or
cause product damage.

OPERATION

MAINTENANCE

Reassemble disc flange, grinding wheel, and clamp nut.
Refer to "INSTALLING THE ACCESSORY WHEELS"
instructions on page 9.

Securely tighten the clamp nut with the wrench pro-
vided.

WARNING:  

In normal wire brushing operations, the material being removed and brush bristles will fly off (up to 50 or more feet) with
considerable force. The potential for serious injury exists. To protect against this hazard, operators and others in the work
area must wear protective clothing and safety goggles, or full face shields worn over safety glasses with side shields.

Summary of Contents for AG450

Page 1: ...lly 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 properly and only f...

Page 2: ...ENTS a a a a a a a a AG450 ANGLE GRINDER TYPICAL APPLICATION WARNING Always use the guard that accompanied the grinder Comply with mounting and use instructions and warnings found in the manual for th...

Page 3: ...ower tool is double insulated This means you are separated from the tool s electrical system by two complete sets of electrical insulation This extra layer of insulation is intended to protect the use...

Page 4: ...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 by po...

Page 5: ...ting Inspect for and remove all foreign objects from workpiece before grinding Following this rule will reduce the risk of serious personal injury Use only accessories that are recommended by the manu...

Page 6: ...s Double Insulated Construction tools Revolutions strokes surface speed orbits etc per minute Indicates danger warning or caution It means attention Your safety is involved Important Some of the follo...

Page 7: ...power supply that 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...

Page 8: ...cures the spindle so that only one wrench is needed to change the grinding wheel Switch with Lock on Feature Your grinder has a conveniently located switch It also has a lock on feature that allows th...

Page 9: ...the same direction as in prior use Failure to heed this warning can result in bristle breaking and extreme vibration of the wire wheel brush that could result in serious personal injury WARNING Failu...

Page 10: ...nd 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 glasses an...

Page 11: ...ury WARNING Never use your grinder without wearing eye protection Following this rule will reduce the risk of serious personal injury Fig 7 WARNING Inspect wire wheel brush before each use Never use o...

Page 12: ...the clamp screw until the guard can be removed from the bearing cap Place the new guard on the shoulder of the bearing cap See Figure 9 Note If the new guard will not fit loosen the clamp screw until...

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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