Makita BUC121 User Manual download pdf

P 1/ 8

Model No.

Description

PRODUCT

CONCEPT AND MAIN APPLICATIONS

BUC121, BUC122

Cordless Chain Saw 115mm (4-1/2)

Models BUC121 and BUC122 have been developed

as the first Makita cordless chain saws powered by 3.0Ah Li-ion battery.

Features higher operation efficiency and more convenience than

the current 12V Model UC120D.

Model BUC121 is powered by 14.4V Li-ion battery of BL1430,

and BUC122 by 18V Li-ion battery of BL1830.

These products are available in the following variations.

Dimensions: mm (")

Width (W)

Height (H)

Length (L)

422 (16-5/8)

195 (7-5/8)

215 (8-1/2)

All models also include the accessories listed in "Standard equipment".

BUC121

BUC121RF

BUC121Z

BL1430

(Li-ion 3.0Ah)

DC18RA

No No No

Model No.

type quantity

Charger

Yes

Plastic

carrying case

BUC121RFE 2

Battery

BUC122

ECHNICAL INFORMATION

Battery

cover

BUC122RF

---

BL1830

(Li-ion 3.0Ah)

DC18RA

No No No

Model No.

type quantity

Charger

Yes

Plastic

carrying case

BUC122RFE 2

Battery

BUC122Z No No No No

Battery

cover

Specification

Standard equipment

Optional accessories

Note: The standard equipment for the tool shown above may vary by country.

File ..................................................................... 1

Oil supply (containing 100ml of chain oil) ....... 1

Guide bar cover ................................................. 1

Chain blade 25AP-42E

Guide bar

Pruning extension set

Battery

Specification

Weight according to

EPTA-Procedure 01/2003*

: kg (lbs)

Capacity: Ah

Cell

Voltage: V

Chain speed: m/s (m/min.)

2.6 (5.7)

14.4

2.5 (5.4)

3.0

Li-ion

115 (4-1/2)

5.0 (300)4.8 (290)

*2 with battery, Guide bar and saw chain

Cutting length: mm (")

Yes (Electric brake)Chain brake

Model

BUC121 BUC122

Pitch

Chain blade

Type

1/4"

25AP-42E

Battery BL1430 (for BUC121)

Battery BL1830 (for BUC122)

Fast charger DC18RA

Charger DC24SC

Charger DC18SC

Automotive charger DC18SE

OFFICIAL USE

for ASC & Sales Shop

1 2 3 4 5 6 7 8

Summary of Contents

Page 1 - CONCEPT AND MAIN APPLICATIONS

P 1/ 8Model No. DescriptionPRODUCTCONCEPT AND MAIN APPLICATIONSBUC121, BUC122 Cordless Chain Saw 115mm (4-1/2)Models BUC121 and BUC122 have been deve

Page 2

P 2 / 8worktableSprocketcoverKnob 60Fig. 1 Fig. 2Flat washer 6depression ofSprocket coverhooks of Knob 60protrusion ofSprocket coverfor fitting to Han

Page 3

P 3 / 8Fig. 3 Fig. 4Leaf springSpindleBearing housing4x18 Tapping screws (4 pcs.)Fig. 5Fig. 7Fig. 6Stop ring E-8 hookedto Spindle’s grooveLockwasher 1

Page 4

P 4 / 8ASSEMBLINGChain oilNormal condition(If Chain oil is not delivered from the exitafter completing repairing, there is the possibilitythat Filter

Page 5

P 5 / 8Repair[3] DISASSEMBLY / ASSEMBLY (cont.)[3]-5. Disassembling/ Assembling Filter in Handle R[3]-6. Disassembling/ Assembling Motor Section1) Str

Page 6 - [3] DISASSEMBLY / ASSEMBLY

P 6 / 8[3] DISASSEMBLY / ASSEMBLY[3]-6. Disassembling/ Assembling Motor Section (cont.)Repair1) When mounting Yoke on Motor housing R, fit the notch o

Page 7 - Circuit diagram

P 7 / 8Wiring diagramFig. D-2Lead wire holderEndbell completeFix Lead wires for Endbell completewith Lead wire holders.Motor housing1 2Circuit diagram

Page 8

P 8 / 8Wiring diagramFig. D-3AFig. D-3BFor BUC121, BUC122For ---Lead wire holdersTerminal unitFix the following Lead wires with Lead wire holders.1) L