Bostitch BTE140K Drill User Manual


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6
Selecting the direction of rotation
Fordrillingandfortighteningscrews,useforward(clockwise)rotation.Forloosening
screwsorremovingajammeddrillbit,usereverse(counterclockwise)rotation.
Note: Thedirectionofrotationisalsodepictedbyanarrowontheforward/reverseslider(3).
Never change the direction of rotation while the motor is running.
• Toselectforwardrotation,pushtheforward/reverseslider(3)totheright(whenviewed
fromthechuckend).
• Toselectreverserotation,pushtheforward/reverseslider(3)totheleft(whenviewed
fromthechuckend).
Two-gear selector (figure F)
• Fordrillinginsteelandforfasteningapplications,turnthe
two-gearselector(4)sothatthearrowpointstoposition1
(1stgear).Alsowhenusinglargerdiameterbitsinwood
turnthetwogearselectorintoposition1.
• Fordrillinginmaterialsotherthansteelandwhenusing
smallerdiameterbits,turnthetwo-gearselector(4)sothat
thearrowpointstoposition2(2ndgear).
Setting the drilling depth
• Slackenthesidehandle(9)byturningthegrip
counterclockwise.
• Setthedepthstoprod(8)tothedesiredposition.Themaximumdrillingdepthisequal
to the distance between the tip of the drill bit and the front end of the depth stop rod.
• Tightenthesidehandlebyturningthegripclockwise.Makesurethatthesidehandleis
secure and does not slip.
Switching on and off
• Toswitchthetoolon,depressthevariablespeedswitch(1).Thetoolspeeddepends
on how far you depress the switch.
• Forcontinuousoperation,pressthelock-onbutton(2)andreleasethevariablespeed
switch. This option is available only at full speed.
• Toswitchthetooloff,releasethevariablespeedswitch.Toswitchthetooloffwhenin
continuousoperation,depressthevariablespeedswitchoncemoreandreleaseit.
WARNING: ThedrillshouldonlybelockedONwhenitisheldstationaryinadrill
pressstandorothermeans;NOTBYHAND!Neverunplugthetoolwiththelockingfeature
engaged. To do so will cause the tool to start immediately the next time it is plugged in.
Drilling
•Alwaysunplugthedrillwhenattachingorremovingaccessories.Whenattaching
accessoriesinthedrillchuck,itisimportanttosecurelytightenthechuckusingallthree
holes to prevent slippage.
•Supportandsecureworkproperly,asinstructedintheSafetyInstructions.
•Useappropriateandrequiredsafetyequipment,asinstructedinthesafetyinstructions.
•Secureandmaintainworkarea,asinstructedinthesafetyinstructions.
•Runthedrillveryslowly,usinglightpressure,untiltheholeisstartedenoughtokeepthe
drill bit from slipping out of it.
•Applypressureinastraightlinewiththebit.Useenoughpressuretokeepthebitbiting
but not so much as to stall the motor or deflect the bit.
•Hold the drill firmly with both hands to control its twisting action. One hand should
be placed on the side handle.
•Drillsequippedwithasidehandlemustusethesidehandle.
•DONOTCLICKTHETRIGGEROFASTALLEDDRILLOFFANDONINANATTEMPT
TOSTARTIT.DAMAGETOTHEDRILLCANRESULT.
•Minimizestallingonbreakthroughbyreducingpressureandslowlydrillingthroughthe
last part of the hole.
•Keepthemotorrunningwhilepullingthebitoutofadrilledhole.Thiswillhelpreduce
jamming.
Drilling In Wood
Holesinwoodcanbemadewiththesametwistdrillbitsusedformetalorwithspadebits.These
bits should be sharp and should be pulled out frequently when drilling to clear chips from the flutes.
Drilling In Metal
Use a cutting lubricant when drilling metals. The exceptions are cast iron and brass which
shouldbedrilleddry.Thecuttinglubricantsthatworkbestaresulfurizedcuttingoilorlardoil.
Drilling in Masonry (Shift drill into hammer mode)
Use carbide tipped masonry bits. Refer to Drillingsection.Keepevenforceonthedrill
butnotsomuchthatyoucrackthebrittlematerial.Asmooth,evenflowofdustindicates
the proper drilling rate.
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