Makita BTD061 Instruction Manual

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Contents

13Hold the tool firmly and place the point of the driver bit in thescrew head. Apply forward pressure to the tool to the extentthat the bit will not slip off the screw and turn the tool on tostart operation.NOTE:• Use the proper bit for the head of the screw/bolt that youwish to use.• Hold the tool pointed straight at the screw.• If you tighten the screw for a time longer than shown inthe figures, the screw or the point of the driver bit may beoverstressed, stripped, damaged, etc. Before startingyour job, always perform a test operation to determinethe proper fastening time for your screw.• If the tool is operated continuously until the batterycartridge has discharged, allow the tool to rest for 15minutes before proceeding with a fresh battery.The fastening torque is affected by a wide variety of factorsincluding the following. After fastening, always check thetorque with a torque wrench.1. When the battery cartridge is discharged almost com-pletely, voltage will drop and the fastening torque will bereduced.2. Driver bit or socket bitFailure to use the correct size driver bit or socket bit willcause a reduction in the fastening torque.3. Bolt• Even though the torque coefficient and the class ofbolt are the same, the proper fastening torque willdiffer according to the diameter of bolt.• Even though the diameters of bolts are the same, theproper fastening torque will differ according to thetorque coefficient, the class of bolt and the boltlength.4. The manner of holding the tool or the material of drivingposition to be fastened will affect the torque.5. Operating the tool at low speed will cause a reduction inthe fastening torque.M8 (5/16”)M6 (1/4”)0.540(29)30(21)20(14)10(7)0 1.0 (S)Standard boltN·m(ft·lbs)(M8)(M10)(M6)M10 (3/8”)Fastening timeFastening torqueProper fastening torque003848M8 (5/16”)1.040(29)30(21)20(14)10(7)0 2.0 3.0High tensile boltN·m(ft·lbs)(S)(M8)(M6)50(36)60(43)M10 (3/8”)(M10)M6 (1/4”)Fastening timeFastening torqueProper fastening torque003849