Makita HP347D User Manual

10 ENGLISH
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
►Fig.9: 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 action mode changing ring so that the
arrow 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 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.
MAINTENANCE
CAUTION: Always be sure that the tool is
switched o󰀨 and the battery cartridge is removed
before attempting to perform inspection or
maintenance.
NOTICE: Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
TomaintainproductSAFETYandRELIABILITY,
repairs,anyothermaintenanceoradjustmentshould
beperformedbyMakitaAuthorizedorFactoryService
Centers, always using Makita replacement parts.

Makita HP347D Specifications

General

Brand	Makita
Model	HP347D
Category	Drill
Language	English