Makita HP331D User Manual

9ENGLISH
First, turn the action mode changing ring so that the
arrow on the tool body points to the
marking.
Placethepointofthedriverbitinthescrewheadand
apply pressure to the tool. Start the tool slowly and then
increase the speed gradually. Release the switch trigger
as soon as the clutch cuts in.
NOTE: When driving wood screw, pre-drill a pilot hole
2/3thediameterofthescrew.Itmakesdrivingeasier
and prevents splitting of the workpiece.
Hammer drilling operation
CAUTION: There is a tremendous and sud-
den twisting force exerted on the tool/drill bit
at the time of hole breakthrough, when the hole
becomes clogged with chips and particles, or
when striking reinforcing rods embedded in the
concrete.
First, turn the action mode changing ring so that the
arrow on the tool body points to the marking.The
adjustingringcanbealignedinanytorquelevelsfor
this operation.
Be sure to use a tungsten-carbide tipped drill bit.
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.
Blow-out bulb
Optional accessory
1
1. Blow-out bulb
Afterdrillingthehole,usetheblow-outbulbtocleanthe
dust out of the hole.
Drilling operation
First,turntheadjustingringsothatthepointerpointsto
the marking.Thenproceedasfollows.
Drilling in wood
When drilling in wood, the best results are obtained
withwooddrillsequippedwithaguidescrew.Theguide
screw makes drilling easier by pulling the drill bit into
the workpiece.
Drilling in metal
Topreventthedrillbitfromslippingwhenstartinga
hole, make an indentation with a center-punch and
hammeratthepointtobedrilled.Placethepointofthe
drill bit in the indentation and start drilling.
Useacuttinglubricantwhendrillingmetals.Theexcep-
tions are iron and brass which should be drilled dry.
CAUTION: 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.
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 small workpieces
in a vise or similar hold-down device.
CAUTION: If the tool is operated continuously
until the battery cartridge has discharged, allow
the tool to rest for 15 minutes before proceeding
with a fresh battery.
Using the tool as a hand screwdriver
Switch off the tool.
Move the reversing switch lever to the neutral position.
Turntheactionmodechangingringsothatthearrow
points to the marking.
Turnthetool.
NOTE:Thisuseisconvenientforcheckingthe
screwdriving.
NOTE:Donotusethetoolforworkrequiringexces-
sive force, such as tightening bolt or removing rusted
screws.

Makita HP331D Specifications

General

Brand	Makita
Model	HP331D
Category	Drill
Language	English