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2-Speed Hammer Drill
13 mm (112”) MODEL 8401
Variable Speed I Reversing
INSTRUCTION MANUAL
DOUBLE
INS U L AT ION
SPEC IF I CAT I 0 N S
Capacities
No load speed Blows Overall Net
Speed
(RPMI per minute length weight
Steel Wood Concrete
High :.;$,: :&:: 0 - 2,800 0 ~ 30,800
310 mm 2.2 kg
(4.5 Ibsl
13 mm 30 mm 13 mm (1 2-7/32”)
Low (,/2”) ,l-l/8r,) (1/2“] 0 ~ 1,100 0 ~ 12,100
* Manufacturer reserves the right to change specifications without notice.
* Note: Specifications may diff
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IMPORTANT SAFETY INSTRUCTIONS (For All Tools) WARNING: WHEN USING ELECTRIC TOOLS, BASIC SAFETY PRECAUTIONS SHOULD ALWAYS BE FOLLOWED TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, AND PERSONAL INJURY, INCLUDING THE FOLLOWING: READ ALL INSTRUCTIONS. 1. KEEP WORK AREA CLEAN. Cluttered areas and benches invite injuries. 2. CONSIDER WORK AREA ENVIRONMENT. Don't use power tools in damp or wet locations. Keep work area well lit. Don't expose power tools to rain. Don't use tool in presence of f
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14. REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of checking to see that keys and adjusting wrenches are removed from tool before turning it on. 15. AVOID UNINTENTIONAL STARTING. Don't carry tool with finger on switch. in. Be sure switch is OFF when plugging 16. EXTENSION CORDS. Make sure your extension cord is in good condition. When using an extension cord, be sure to use one heavy enough to carry the current your product will draw. An undersized cord will cause a drop in line volta
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VOLTAGE WARNING: Before connecting the tool to a power source (receptacle, outlet, etc.) be sure the voltage supplied is the same as that specified on the nameplate of the tool. A power source with voltage greater than that specified - as well as damage to for the tool can result in SERIOUS INJURY to the user If in doubt, DO NOT PLUG IN THE TOOL. Using a power source with the tool. voltage less than the nameplate rating is harmful to the motor. ADDITIONAL SAFETY RULES 1. Wear a hard hat
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Installing side grip (auxiliary handle) The side grip is an important means of maintaining good control of this hammer drill during use in the even bit or accessory jams, causing the tool twist from your hand with the potential to cause injury. Loosen the wing nut on the side grip and install the side grip on the tool. The side grip swings around to either side, allowing easy handling of the tool in any position. Swing the side grip to the desired position and then tighten the wing nut to
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Switch action Tool speed is increased by increasing pres- sure on the trigger. To start the tool, simply pull the trigger. Release the trigger to stop. For continuous operation, pull the trigger and then push in the lock button. To stop the tool while in the locked posi- tion, pull the trigger fully, then release it. A speed control screw is provided so that Trigger tool speed can be maintained at a constant switch LO~ 11 4 speed other than its maximum speed. Turn button the speed c
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Action mode Action mode changing button This tool employs action mode changing buttons. For rotation only, press the button on the SX- mark side fully. For rotation with hammering action, press the button on the c mark side fully. CAUTION : Be sure to press the action mode changing button as far as it will go, Failure to do so may cause malfunction of the tool. Operation 1 ) Hammer drilling operation When drilling in concrete, granite, tile, etc., press the button on the c mark side
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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 bit, decrease the tool performance and shorten the service life of the tool. 0 There is a tremendous twisting force exerted on the tool/bit at the time of hole break- through. Hold the tool firmly and exert care when the bit begins to break through the workpiece. Use both hands to help control the tool. Be sure to use the side grip (auxilia
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MAINTENANCE CAUTION : Always be sure that the tool is switched off and unplugged before attempting to perform inspection or maintenance. To maintain product SAFETY and RELlABl LITY, repairs, carbon brush inspection and replacement, any other maintenance or adjustment should be performed by Makita Authorized or Factory Service Centers, always using Makita replacement parts. 9
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ACCESSORIES CAUTION : These accessories or attachments are recommended for use with your Makita tool specified in this manual. The use of any other accessories or attachments might present a risk of injury to persons. The accessories or attachments should be used only in the proper and intended manner. 0 Tungsten-carbide tipped 0 Depth gauge (hammer) bit Part No. 321059-7 Part No. I Bit diameter I Overall length 711120-A 1 3/16' I 4" 0 Blow-out bulb 711121-A 114" 4" Part No. 765009-6
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Aug -28-'91 EN 13 mm (1/2") 2-SPEED HAMMER DRILL Model 8401 Note: The switch, noise suppressor and other part configurations may differ from country to country. 11
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A\ug.-28-'91 US iv MODEL 8401 1 1 Name Plate 24 1 Spindle 2 1 Housing Set (With Item 361 25 1 Drill Chuck S13 1 3 Cord Guard 26 1 Flat Head Screw M6x22 4 1 Cord 27 1 Pl" 5 5 5 1 Switch 28 1 Ball Bearing 6262 6 1 Strain Relief 29 1 Gear Complete 9-18-34 7 2 Pan Head Screw M4x18 [With Washer! 30 1 Ball Bearing 6262 8 2 Carbon Brush 31 1 Ball Bearing 608LB 9 1 Switch 32 1 Fan 52 11 1 Cam Holder 33 1 ARMATURE ASSEMBLY 12 1 Steel Ball 4 8 [With Item 31 - 34! 13 1 cam B 34 1 Ball Bea
