RIDGID R4121 manual Brush Replacement, Changing the Batteries

MAINTENANCE

BRUSH REPLACEMENT

See Figure 43.

The saw has externally accessible brush assemblies that should be periodically checked for wear.

Proceed as follows when replacement is required:

Unplug the saw.

WARNING:

Failure to unplug the saw could result in accidental starting causing serious injury.

Remove brush cap with a screwdriver. Brush assembly is spring loaded and will pop out when you remove brush cap.

Remove brush assembly.

Check for wear. Replace both brushes when either has less than 1/4 in. length of carbon remaining. Do not replace one side without replacing the other.

Reassemble using new brush assemblies. Make sure curvature of brush matches curvature of motor and that brush moves freely in brush tube.

Make sure brush cap is oriented correctly (straight) and replace.

Tighten brush cap securely. Do not overtighten.

CHANGING THE BATTERIES

See Figure 44.

Unplug the saw.

Rotate and hold lower blade guard up.

Using the hex key (1/16 in.) provided, loosen the screw then separate the cover from the laser guide.

Lower the blade guard.

Remove the three button cell batteries.

NOTE: Replace the batteries with button cell batteries that have a rating of 1.5 volt and 100 mAh (milliampere hour) minimum (number 76 series or equivalent).

When replacing the batteries, the laser guide should be thoroughly cleaned. Use a soft paintbrush, or similar device, to remove all sawdust and debris.

After cleaning the laser guide and replacing batteries, secure battery cover to laser guide using the screw. Tighten screw securely.

WARNING:

Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

BRUSH	BRUSH
	ASSEMBLY
ASSEMBLY

BRUSH

CAP

BRUSH

CAP

Fig. 43

m n

BATTERY

COVER

SCREW

BATTERIES

BATTERY

COVER

NEGATIVE (–)

LASER

GUIDE

Fig. 44

35