Makita HR1821 instruction manual Switch action Tool speed is increased by increasing pres

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Switch action

Tool speed is increased by increasing pres-

,

Speed control screw

sure on the

trigger. To start the tool,

 

simply pull

the trigger. Release the

 

trigger to stop.

Fig. t

.A speed control screw is provided so that tool speed (RPM) can be changed a t the fully- pulled trigger position. Turn the speed control screw clockwise (+) for higher speed and counterclockwise (-)for lower speed.

CAUTION:

Before plugging in the tool, always check to see that the trigger switch actuates properly and returns to the "OFF" position when released.

Hammer drilling operation

.Position the drill bit a t the location for the hole, then pull the trigger.

Do not force the tool. Light pressure gives best results. Keep the tool in posi- tion and prevent it from slipping away from the hole.

When holes becomeclogged

.Do not apply more pressure when the hole becomes clogged with chips or par- ticles. Instead, run the tool a t idle, then remove from the hole. By repeating this several times, the hole will be cleaned out completely.

Fig. 9

CAUTION:

When drilling in concrete, it is quite possible that the drill bit could hit a reinforcing rod or some other object that could cause a kickback. Although this tool is equipped with the torque limiter, protect yourself by holding the tool firmly with both hands. (Be sure the side grip is secured tightly before operation.)

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Contents 19 mm 3/4 Model HR1821 Safety Instructions Page For all grounded tools with American type plug Additional Safety Rules Key-groove Dust collector Push rod Switch action Tool speed is increased by increasing pres Fig. fi Maintenance 309 Accessor IES Anchor setting rod Manual setting Rotary Hammer IkM Makita Limitedone Year Warranty