Makita HR2420 User Manual download pdf (Page 7)

Torque limiter

The torque limiter will actuate when a certain torque level is

reached. The motor will disengage from the output shaft.

When this happens, the bit will stop turning.

CAUTION:

• As soon as the torque limiter actuates, switch off the tool

immediately. This will help prevent premature wear of the

tool.

• Hole saws, core bits, diamond core bits, etc. cannot be

used with this tool. They tend to pinch or catch easily in

the hole. This will cause the torque limiter to actuate too

frequently.

ASSEMBLY

CAUTION:

• Always be sure that the tool is switched off and

unplugged before carrying out any work on the tool.

Side grip (auxiliary handle)

The side grip swings around to either side, allowing easy

handling of the tool in any position. Loosen the side grip by

turning it counterclockwise, swing it to the desired position

and then tighten it by turning clockwise.

Bit grease (optional accessory)

Coat the bit shank head beforehand with a small amount of

bit grease (about 0.5 -1 g; 0.02 - 0.04 oz.). This chuck lubri-

cation assures smooth action and longer service life.

Installing or removing the bit

Clean the bit shank and apply bit grease before installing the

bit.

1. Side grip

2. Clamp Screw

003143

1. Bit shank

2. Bit grease

003150

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Makita HR2420 User Manual Page 7