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Makita UC4003A manual

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Table of contents for the manual

  • Page 1

    Continuous Rating (W) V oltage (V) Model No. Chain blade No load chain speed: m/s Electric brake Guide bar length: mm (") Pitch Chain type Gauge Cycle (Hz) UC3003A UC3503A UC4503A UC4003A UC3003A, UC3503A, UC4003A, UC4503A Chain saws 300mm, 350mm, 400mm, 450mm For European mark et, the abov e models hav e been de v eloped as upgraded chain saw[...]

  • Page 2

    R epair P 2 / 8 < 1 > Lubrication Apply Makita grease N. No.1 to the follo wing portions designated by black triangle to protect parts and product from unusual abrasion. ( Fig. 1 ) < 2 > Removing Gear Housing fr om Motor Housing f or Replacement of Armature Assembly 1. After removing brush holder caps, remov e carbon brushes. Remov e a [...]

  • Page 3

    R epair P 3 / 8 < 2 > Removing Gear Housing fr om Motor Housing f or Replacement of Armature Assembly (cont.) 2. T ake switch out of gear housing L, and then disconnect the connecting terminal from switch as illustrated to left in Fig. 3 . 3. Remov e four 5x25 tapping scre ws as illustrated to right in Fig. 3 . No w motor housing can be separ[...]

  • Page 4

    R epair P 4 / 8 < 3 > Disassembling Gear Housing (cont.) 3. Remov e four 5x25 tapping scre ws and two 5x55 tapping screws as illustrated in Fig. 6 . Remov al of the screws will release tubular handle from gear housing. 4. Remov e tubular handle from the bottom side of gear housing L as illustrated to left in Fig. 7 . 5. Remov e gear housing R[...]

  • Page 5

    R epair P 5 / 8 < 4 > Replacement of Straight Bev el Gear 43 and Oil Pump Complete (cont.) < 5 > Replacement of Clutch Drum and Brake Spring 4. Remov e Holder by removing BT3.5x9.5. Oil pump complete can no w be removed from Gear housing (R). ( Fig . 9 ) Note : When installing ne w Oil pump complete, apply 1g of Makita grease N. No.1 to[...]

  • Page 6

    R epair P 6 / 8 < 5 > Replacement of Clutch Drum and Brake Spring (cont.) 3. T ake Brak e spring out of Gear housing (R), then remov e Brake spring from the cla w of Brake spring holder . ( Fig. 12 ) < 6 > Replacement of Brake Spring Holder 1. First lock Clutch drum with Brake spring using Retaining ring S pliers (1R003) as described be[...]

  • Page 7

    C ircuit diagram W iring diagram- (1) Outside and Inside Motor Housing P 7 / 8 Fig. 16 Fig. 17 Fig. 18 Color index of lead wire sheath Black White Orange Y ello w COM Receptacle sleev e NO Pull the Field lead wires out of the commutator end of Motor housing as illustrated to left in Fig. 17 . Be sure to fix the Field lead wire (yello w) with lead w[...]

  • Page 8

    W iring diagram- (2) Inside Handle (L) P 8 / 8 Fig. 19 Fig. 20 1. Before installing Main switch onto Handle (L), fix the follo wing lead wires with lead wire holders as illustrated in Fig. 19 . * Field lead wire (orange) * Field lead wire (yello w) * Lead wire (black) from switch installed on Gear housing (L) 2. After installation of Main switch, p[...]