Instructions / Assembly

ManualsBrandsMakita ManualsOutdoors16 in. 14.5 Amp Electric Chain Saw

P 2/ 13

Repair

[1] NECESSARY REPAIRING TOOLS

CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.

Code No. Description

Use for

1R003 Retaining ring pliers ST-2N making Link plate free when disassembling Brake section

1R269 Bearing extractor

1R291 Retaining ring S & R pliers

removing Ball bearings

removing Retaining ring S-10 from the shaft of Spiral bevel gear 37

[2] LUBRICATION

Apply the mixture of 90% Makita grease FA. No.2 with 10% Molybdenum disulfide to the following portions

designated with the black triangle to protect parts and product from unusual abrasion.

Fig. 1

Item No. Description

Link plate complete

Compression spring 9 Coil portion

Gear housing

Gear room where Spiral bevel gear 37 engages with Spiral

bevel gear 12 of Armature

Worm gear Gear teeth which engages with Oil pump

Gear teeth which engages with Drive gear complete

Oil pump

Amount

a little

5g approx.

Portion to lubricate

Spiral bevel gear 37

Adjust screw

Thread portions

(available for UCXX51A series/ TLC models)

Drive gear complete

Adjust pin

Brake band

Bearing housing

Sprocket cover complete

Straight bevel gear 14

Summary of content (12 pages)

PAGE 1
P 2/ 13 Repair CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”. [1] NECESSARY REPAIRING TOOLS Code No. 1R003 Use for Description Retaining ring pliers ST-2N making Link plate free when disassembling Brake section 1R269 Bearing extractor removing Ball bearings 1R291 Retaining ring S & R pliers removing Retaining ring S-10 from the shaft of Spiral bevel gear 37 [2] LUBRICATION Apply the mixture of 90% Makita grease FA. No.
PAGE 2
P 3/ 13 Repair [3] DISASSEMBLY/ASSEMBLY [3]-1. Oil pump complete, Front hand guard complete DISASSEMBLING Note: Unplug the machine from the power source. Remove Saw chain and Guide bar from the machine for safety before repair/ maintenance. Remove Chain oil from Oil tank in advance. (1) Disassemble Gear housing cover side after removing Sprocket cover, Front handle and Spike bumper as drawn in Fig. 2. Fig. 2 1. Remove Sprocket cover. Sprocket cover 2. Loosen two 5x25 Tapping screws to remove Spike bumper.
PAGE 3
P 4/ 13 Repair [3] DISASSEMBLY/ASSEMBLY [3]-1. Oil pump, Front guard (cont.) DISASSEMBLING (2) Remove Oil pump complete as drawn in Fig. 3. Fig. 3 1. Remove Brush holder caps and Carbon brushes from the machine. Then, remove four 5x25 Tapping screws. Brush holder cap 2. Separate Motor housing from Gear housing. Gear housing Carbon brush Motor housing Carbon brush Brush holder cap 5x25 Tapping screw (4 pcs.) 3.
PAGE 4
P 5/ 13 Repair [3] DISASSEMBLY/ASSEMBLY [3]-1. Oil pump complete, Front hand guard complete (cont.) ASSEMBLING (1) Assemble Oil pump to Gear housing as drawn in Fig. 4. Fig. 4 Fit two pins of Oil pump complete into the cavities of Gear housing. Then, tighten Oil pump complete with 4x18 Tapping screw. pin holes Oil pump pins 4x18 Tapping screw 4x18 Tapping screw (2) Assemble Bearing housing section to Gear housing. (Refer to Fig. 3 of page 4).
PAGE 5
P 6/ 13 Repair [3] DISASSEMBLY/ASSEMBLY [3] -2. Armature, Spiral bevel gear 12, Spiral bevel gear 37 DISASSEMBLING (1) Disassemble Sprocket cover, Front handle and Spike bumper as drawn in Fig. 2. (2) Disassemble Armature and Spiral bevel gear 12 as drawn in Fig. 7. Fig. 7 2. Remove Motor housing from Gear housing section. 1. Remove Brush holder caps and Carbon brushes from the machine. Then, unscrew four 5x25 Tapping screws with a long reach screwdriver.
PAGE 6
P 7/ 13 Repair [3] DISASSEMBLY/ASSEMBLY [3]-2. Armature, Spiral bevel gear 12, Spiral bevel gear 37 (cont.) DISASSEMBLING (5) Disassemble Spiral bevel gear 37 as drawn in Fig. 9. Fig. 9 Ball bearing 606ZZ Retaining ring S-10 Worm gear 1. Remove Ball bearing 606ZZ with 1R269. 2. Remove Retaining ring S-10 with 1R291. 3. Separate Worm gear from Spindle. Spiral bevel gear 37 4.
PAGE 7
P 8/ 13 Repair [3] DISASSEMBLY/ASSEMBLY [3] -3. Brake mechanism DISASSEMBLING (1) If Front hand guard is damaged, replace it with a new one as drawn in Fig. 2. Note: Be careful not to lose Compression spring 6. (2) Disassemble Brake mechanism as drawn in Fig. 10. Fig. 10 1. Release brake by turning Front hand guard complete to Front handle side. 2. Remove Sprocket cover complete, Retaining ring E type 6 and Flat washer 8 from the machine.
PAGE 8
P 9/ 13 Repair [3] DISASSEMBLY/ASSEMBLY [3]-3. Brake mechanism (cont.) DISASSEMBLING (5) Disassemble Brake mechanism as drawn in Fig. 11. Fig. 11 Link plate complete “Chain brake activated” position 1. Remove Bearing housing from Gear housing. Note: Be sure that Link plate complete is in “Saw chain brake activated” position. (See step 4 in Fig. 10). If not, set the Link plate to that position by gripping it with a water pump pliers. Bearing housing Gear housing 2.
PAGE 9
P 10/ 13 Repair [3] DISASSEMBLY/ASSEMBLY [3]-3. Brake mechanism (cont.) ASSEMBLING (1) Assemble Brake band to Bearing housing. (Refer to the bottom right illustration in Fig. 11 of page 9). (2) Pass Compression spring 9 through Link plate complete, and mount the plate to Bearing housing as drawn in Fig. 12. Fig. 12 Pin of Bearing housing The round hole end of Link plate complete has to be mounted to the pin portion of Bearing housing by pushing the plate deeply until it stops.
PAGE 10
P 11/ 13 Circuit diagram Fig. D-1 Field view from Handle set (Rear side) Sprocket cover side Gear housing cover side white Noise suppressor*1 Switch white black Field white orange white Power supply cord brown*3 yellow blue*4 orange red orange Choke coil*2 white orange Switch blue black Controller *1 Noise suppressor is not used for some countries. *2 Choke coil is not used for some countries. *3 Black lead wire is used for some countries.
PAGE 11
P 12/ 13 Wiring diagram Fig. D-2 Wiring of Field’s lead wires in Motor housing 1. Assemble Field to Motor housing while facing the following lead wires to Switch for Kickback brake side. *Lead wire (orange) *Lead wire (white) *Lead wire (yellow) 2. Pull out Field’s lead wires (yellow, white, orange) through the holes of Motor housing as shown below.
PAGE 12
P 13/ 13 Fig. D-3 Wiring in Handle set Lead wire holder A Main switch Lead wire holder B Rib I Rib H Put Field’s Lead wire (yellow) into this Lead wire holder between Lead wire holder A and Switch. Route Lead wires of Main switch between Rib H and Rib I. Route Lead wires between Pins and Boss. Without piling on the other lead wires, fix Lead wires in Lead wire holder A and Lead wire holder B Put Closed end splice to this place.