Makita HR3851, Instruction Manual

Page: 4 / 28

4
SAVE THESE INSTRUCTIONS
WARNING:
MISUSE or failure to follow the safety
rules stated in this instruction manual
may cause serious personal injury.
SYMBOLS
USD202-2
The followings show the symbols used for tool.
V ............................volts
A ...........................amperes
Hz ..........................hertz
..................alternating current
.......................no load speed
.......................Class II Construction
.../min ....................revolutions or reciprocation per
minute
..................number of blow
FUNCTIONAL DESCRIPTION
CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on
the tool.
Switch action
CAUTION:
• Before plugging in the tool, always check to see
that the switch trigger actuates properly and returns
to the “OFF” position when released.
To start the tool, simply pull the switch trigger. Release
the switch trigger to stop.
Selecting the action mode
Rotation with hammering
For drilling in concrete, masonry, etc., rotate the change
lever to the
symbol.
Hammering only
For chipping, scaling or demolition operations, rotate the
change lever to the
symbol.
CAUTION:
• Do not rotate the change lever when the tool is
running under load. The tool will be damaged.
• To avoid rapid wear on the mode change
mechanism, be sure that the change lever is always
positively located in one of the two action mode
positions.
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)
For maximum control and safer operation, always use the
side grip with this tool. The side grip swings around to
either side, allowing easy handling of the tool in any posi-
tion. Loosen the side grip by turning it counterclockwise,
swing it to the desired position and then tighten it by turn-
ing clockwise.
The side grip can also be installed in the position shown
in the figure. Remove the side grip from the grip base by
turning the side grip counterclockwise. Screw the side
grip on either side of the tool, whichever is convenient.
1. Switch trigger
1
003111
1. Change lever
2. For hammering
only
3. For rotation with
hammering
1. Side grip
2. Grip base
1
2
3
003127
1
2
003146