Makita DFS441 Technical Information
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Makita DFS441 Technical Information

Makita DFS441 Technical Information

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T
ECHNICAL INFORMATION
Model No.
Description
C
ONCEPT AND MAIN APPLICATIONS
Models DFS441 and DFS451 are pistol grip Cordless Screwdrivers
with variable speed control switch, compact and lightweight body,
well balanced tool design for easy handling and maneuverability.
Their main benefits are:
● Best possible tool body for screwdriving
● Single LED job light with afterglow function
These models are powered by the following Li-ion battery;
DFS441 (14.4V): BL1415 (1.3Ah), BL1415N (1.5Ah), BL1415NA (1.5Ah),
BL1430 (3.0Ah), BL1430A (3.0Ah), BL1440 (4.0Ah) and BL1450 (5.0Ah)
DFS451 (18V): BL1815 (1.3Ah), BL1815N (1.5Ah), BL1820 (2.0Ah),
BL1830 (3.0Ah), BL1840 (4.0Ah) and BL1850 (5.0Ah)
S
pecification
Specification
Voltage: V
Capacity : Ah
Battery Cell
Energy capacity: Wh
Charging time (approx.): min.
No load speed: min.
-1
Driver bit: mm (")
Capacities [drywall]: mm (")
Electric brake
Reverse switch
Variable speed control by trigger
LED job light
Weight according to
EPTA-Procedure 01/2003: kg (lbs)
S
tandard equipment
Battery*
5
Battery cover*
6
Charger*
5
Plastic carrying case or Systainer case*
*5 Battery and charger are not supplied with "Z" model
*6 Supplied with the same quantity of extra battery
*7 For some countries
Note: The standard equipment may vary by country or model variation.
O
ptional accessories
Phillips bit 1-25
Phillips bit 2-25
Phillips bit 3-25
Magnetic connect bit 6.35-60
Magnetic connect bit 6.35-76
DFS441, DFS451
Cordless Screwdriver
Model
15, 15, 22, 36, 45 with DC18RC
= rpm
Shank
Diameter
Phillips bit 2-25
Magnetic connect bit 6.35-60 or 6.35-76
Belt clip
7
Fast charger DC18RC
Charger DC18SD/DC24SC
Automotive charger DC18SE
Four port multi charger DC18SF
Two port multi fast charger DC18RD
BFS441
14.4
1.3, 1.5, 3.0, 4.0, 5.0
Li-ion
19, 22, 44, 58, 72
0 - 4,000
6.35 (1/4) Hex
4 (5/32)
1.4 (3.2)
*3
1.6 (3.6)
*4
For DFS441
Battery BL1415N
Battery BL1415NA
Battery BL1430
Battery BL1430A
Battery BL1440
Battery BL1450
OFFICIAL USE
for ASC & Sales Shop
L
W
(The image above is DFS441.)
Dimensions: mm (")
281 (11-1/8)*
Length (L)
296 (11-5/8)*
Width (W)
80 (3-1/8)
224 (8-7/8)*
Height (H)
241 (9-1/2)*
*1 with Magnetic connect bit 60
*2 with Magnetic connect bit 76
*3 DFS441: with BL1415 or BL1415N
DFS451: with BL1815, BL1815N or BL1820
*4 DFS441: with BL1430, BL1440 or BL1450
DFS451: with BL1830, BL1840 or BL1850
BFS451
18
1.3, 1.5, 2.0, 3.0, 4.0, 5.0
24, 27, 36, 54, 72, 90
15, 15, 24, 22, 36, 45 with DC18RC
Yes
Yes
Yes
Yes
1.5 (3.3)
*3
1.7 (3.8)
*4
For DFS451
Battery BL1815
Battery BL1815N
Battery BL1820
Battery BL1830
Battery BL1840
Battery BL1850
PRODUCT
P 1/14
H
1
2
3
4

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Summary of Contents for Makita DFS441

  • Page 1 Model No. Description Cordless Screwdriver ONCEPT AND MAIN APPLICATIONS Models DFS441 and DFS451 are pistol grip Cordless Screwdrivers with variable speed control switch, compact and lightweight body, (The image above is DFS441.) well balanced tool design for easy handling and maneuverability.

  • Page 2: Necessary Repairing Tools

    Thread portion VG100 a little Dust seal sleeve Internal surface Locator base Internal surface of Dust seal 13 that Spindle 125S complete contacts Makita a little Spindle 125S complete Surface that Clutch cam contacts grease FA No.2 Bearing complete Internal surface...
  • Page 3 P 3/14 epair [3] DISASSEMBLY/ASSEMBLY [3]-1. Locator Section DISASSEMBLING Fig. 3 2. Remove Leaf spring with 1. Pull off Locator complete and Lock ring from Housing, slotted screwdriver. then remove Locator complete from Lock ring. Locator complete Lock ring Leaf spring 3.
  • Page 4 P 4/14 epair [3] DISASSEMBLY/ASSEMBLY [3]-1. Locator Section ASSEMBLING 1) Assembling of Locator base complete, Locator complete, Leaf spring and related parts. (Fig. 4) Fig. 4 1. Mount Locator complete to Locator base complete and fix them 2. Remove Locator complete again, to Housing set by tightening counterclockwise with adjustable wrench.
  • Page 5 P 5/14 epair [3] DISASSEMBLY/ASSEMBLY [3]-1. Locator Section ASSEMBLING 2) Make sure to put Seal ring 30 in Lock ring and Dust seal sleeve in Locator complete before mount them on Housing. (Fig. 5) Fig. 5 Seal ring 30 Dust seal sleeve Locator complete Lock ring 3) Insert Locator complete into Lock ring and mount them on Housing.
  • Page 6 P 6/14 epair [3] DISASSEMBLY/ASSEMBLY [3]-2. Clutch Section DISASSEMBLING 1) Disassemble Locator section (Fig. 3) and remove Magnetic connect bit from Spindle 125S. 2) Separate Spindle section from Housing L (Fig. 7). Fig. 7 1. Dismantle Housing (R) complete by removing seven 4x18 Tapping screws.
  • Page 7 Flat washer 26 2) Assemble Gear complete, Spindle 125S complete and Bearing complete. (Fig. 11) Fig. 11 1. Apply Makita grease FA No.2 to the 3. Mount Bearing complete to the Spindle, whole portion of the Flat washers. then fix Steel balls with Leaf spring.
  • Page 8 P 8/14 epair [3] DISASSEMBLY/ASSEMBLY [3]-3. Motor Section (Armature, Yoke unit, Brush holder) ASSEMBLING 1) Disassemble Locator section (Fig. 3) and remove Magnetic connect bit from Spindle 125S. 2) Separate Housing (R) complete (Fig 7). 3) Disassemble Motor section from Housing (L) complete. (Fig. 13) Fig.
  • Page 9 P 9/14 epair [3] DISASSEMBLY/ASSEMBLY [3]-3. Motor Section (Armature, Yoke unit, Brush holder) ASSEMBLING 1) Assemble Motor section as described in Fig. 14. Fig. 14 Note: 1. Insert Armature into Yoke unit 2. Mount Brush holder complete The notch on Yoke unit must be in the direction of the arrow.
  • Page 10 P 10/14 epair [3] DISASSEMBLY/ASSEMBLY [3]-4. F/R Change Lever ASSEMBLING Be sure to mount F/R change lever on Switch before assembling Housing (R) complete. (Fig. 15) Fig. 15 F / R change Lever fork portion Engage this fork portion with the projection on Switch.

  • Page 11: Circuit Diagram

    P 11/14 ircuit diagram Fig. D-1 Color index of lead wires' sheath Black Yellow Orange Blue White Heatsink Red for DFS441 White for DFS451 LED job light Line filter Light circuit Brush holder complete Switch Connectors Note: Line filter Use two Line filters in the following positions if required.

  • Page 12: Wiring Diagram

    P 12/14 iring diagram Brush holder complete and Switch unit come with Line filter as complete unit for the countries requiring Line filters (Fig. D-2, D-3). Fig. D-2 Wiring of Brush Holder Complete Wind Lead wires (black, red) once on Line filter. Brush holder complete Line filter for connecting to...
  • Page 13 P 13/14 iring diagram Setting Carbon brush Installing and removal of Carbon brush. (Figs. D-4, D-5) Fig. D-4 Fig. D-5 [Correct] [Wrong] Lead wire of Carbon brush Route the Lead wire through this slot. tail of Torsion spring Torsion spring tail of Torsion spring Wrongly routed Lead wire may interfere the tail of...
  • Page 14 P 14/ 14 iring diagram Fig. D-5 Wiring in Housing (L) Complete Do not put lead wires on this rib to avoid pinching. Connect Terminals from Brush holder complete to Switch at the right angle to the top line of Switch. 90 degrees Switch Brush holder complete...

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Dfs451

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