Makita HR1841F [9/48] Operation
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Makita HR1841F [9/48] Operation

Makita HR1841F [9/48] Operation
9 ENGLISH
Dust cup set (optional accessory)
NOTICE: If you purchase the dust cup set as
optional accessory, the standard side grip cannot
be used with the dust cup set being installed on
the tool. When the dust cup set is installed on the
tool, remove the grip from the standard side grip, and
then attach it to the optional grip base set.
►Fig.12: 1. Bolt 2. Grip 3. Optional grip base set
NOTICE: Do not use the dust cup set when drill-
ing in metal or similar. It may damage the dust cup
set due to the heat produced by small metal dust or
similar. Do not install or remove the dust cup set with
the drill bit installed in the tool. It may damage the
dust cup set and cause dust leak.
Before installing the dust cup set, remove the bit from
the tool if installed.
Installthespacersothatthegroovesonthespacert
in the protrusions on the tool barrel while widening it.
Be careful for the spring not to come off from the slit of
spacer.
►Fig.13: 1. Spacer 2. Spring
►Fig.14
Install the side grip (optional grip base set and the grip
removed from standard side grip) so that the groove on
thegriptintheprotrusiononthespacer.Turnthegrip
clockwise to secure it.
►Fig.15: 1. Side grip
Install the dust cup set so that the claws of the dust cup
tinintheslitsonthespacer.
►Fig.16: 1. Dust cup 2. Claw
NOTE: If you connect a vacuum cleaner to the dust
cup set, remove the dust cap before connecting it.
►Fig.17: 1. Dust cap
Toremovethedrillbit,pullthechuckcoverdownallthe
way and pull the drill bit out.
►Fig.18: 1. Bit 2. Chuck cover
Toremovethedustcupset,holdtherootofdustcup
and pull it out.
►Fig.19
NOTE: If the cap comes off from the dust cup, attach
it with its printed side facing up so that groove on the
captsintheinsideperipheryoftheattachment.
►Fig.20
OPERATION
CAUTION: Always use the side grip (auxiliary
handle) and rmly hold the tool by both side grip
and switch handle during operations.
CAUTION: Always make sure that the work-
piece is secured before operation.
►Fig.21
Hammer drilling operation
CAUTION:Thereistremendousandsudden
twistingforceexertedonthetool/drillbitatthetimeof
hole break-through, when the hole becomes clogged
with chips and particles, or when striking reinforcing
rods embedded in the concrete. Always use the side
grip (auxiliary handle) and rmly hold the tool by
both side grip and switch handle during opera-
tions. Failure to do so may result in the loss of control
ofthetoolandpotentiallysevereinjury.
Set the action mode changing knob to the symbol.
Position the drill bit at the desired location for the hole,
then pull the switch trigger. Do not force the tool. Light
pressure gives best results. Keep the tool in position
and prevent it from slipping away from the hole.
Do not apply more pressure when the hole becomes
clogged with chips or particles. Instead, run the tool at
an idle, then remove the drill bit partially from the hole.
By repeating this several times, the hole will be cleaned
out and normal drilling may be resumed.
NOTE: Eccentricity in the drill bit rotation may occur
whileoperatingthetoolwithnoload.Thetoolauto-
maticallycentersitselfduringoperation.Thisdoesnot
affect the drilling precision.
Drilling in wood or metal
CAUTION: Hold the tool rmly and exert care
when the drill bit begins to break through the
workpiece.Thereisatremendousforceexertedon
the tool/drill bit at the time of hole break through.
CAUTION: A stuck drill bit can be removed
simply by setting the reversing switch to reverse
rotation in order to back out. However, the tool
may back out abruptly if you do not hold it rmly.
CAUTION: Always secure workpieces in a
vise or similar hold-down device.
NOTICE: Never use “rotation with hammering”
when the drill chuck is installed on the tool.The
drill chuck may be damaged.
Also,thedrillchuckwillcomeoffwhenreversingthe
tool.
NOTICE: Pressing excessively on the tool will
not speed up the drilling.Infact,thisexcessive
pressure will only serve to damage the tip of your drill
bit, decrease the tool performance and shorten the
service life of the tool.
Set the action mode changing knob to the symbol.
Attachthechuckadaptertoakeylessdrillchuckto
which1/2"-20sizescrewcanbeinstalled,andthen
install them to the tool. When installing it, refer to the
section “Installing or removing drill bit”.
►Fig.22: 1. Keyless drill chuck 2. Chuck adapter

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