Makita DUC121 Technical Information Download Page 2

P 2 / 8

worktable

Sprocket

cover

Knob 60

Fig. 1

Fig. 2

Flat washer 6

depression of

Sprocket cover

hooks of Knob 60

protrusion of

Sprocket cover

for fitting to Handle R 

groove of

Sprocket cover 

Description

Code No.

Use for

1R237 Round bar for arbor 8-100
1R263 Bearing extractor
1R280 Round bar for arbor 6-50

Bearing setting plate 12.2

1R034

Installing Push nut

Correcting the deformed Push nut

Removing Helical gear 50 with Spindle
Removing Spindle from Helical gear and Ball bearings

Removing Spindle from Helical gear 50

R

epair

[1] NECESSARY REPAIRING TOOLS

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

[2] LUBRICATION

[3] DISASSEMBLY/ ASSEMBLY

[3]-1. Disassembling/ Assembling Sprocket Cover Section

DISASSEMBLING

ASSEMBLING

To protect parts and product from unusual abrasion;

1) apply 7g of Makita grease 

FA

 No. 2 to Gear room.

Note:

 Be sure to apply a little amount of the above grease to the inner periphery of Crank.

2) apply a little amount of Lubricant VG100 to O-ring 1.5 and insert the O-ring 1.5

 to Oil pump complete.

3) apply sealing lubricant to the both surface of Flat washer 6 under Knob 60.

1) Remove Sprocket cover section by turning Knob 60 counterclockwise.

2) Put Sprocket cover section on worktable and turn Knob 60 counterclockwise (

Fig. 1

) while holding Sprocket cover

so that the one of Knob 60’s hook can be placed in the depression in Sprocket cover section. (

Fig. 2

)

Note:

 The hooked portions are very fragile. Therefore, turn Knob 60 carefully.

3) Remove the hooks of Knob 60 from the groove of Sprocket cover, and Knob 60 can be removed.

1) Apply sealing lubricant to the both side of Flat washer 6. (

Fig. 2

)

2) Set Knob 60 and Flat washer 6 on Sprocket cover, then fit the hooks of Knob 60 into the groove of Sprocket cover by

turning Knob 60 clockwise carefully.

3) Insert the protrusion of Sprocket cover into Handle R and assemble Sprocket cover section to Handle L by tightening

Knob 60.

Summary of Contents for DUC121

Page 1: ...attery Battery 4 Battery cover 5 Charger 4 Plastic carrying case 4 File Oil supply containing 100ml of chain oil Guide bar cover Chain blade 25AP 42E Guide bar Pruning extension set Battery Specificat...

Page 2: ...ote Be sure to apply a little amount of the above grease to the inner periphery of Crank 2 apply a little amount of Lubricant VG100 to O ring 1 5 and insert the O ring 1 5 to Oil pump complete 3 apply...

Page 3: ...astic hammer Fig 4 Bearing housing can be removed Note Do not strike Leaf spring near Spindle 3 DISASSEMBLY ASSEMBLY cont 3 2 Disassembling Assembling Gear Section DISASSEMBLING 3 Install Lock washer...

Page 4: ...ig 9 Stepped portion of Helical gear 50 Ball bearing 696ZZ Ball bearing 609LLB Cam Spindle Stop ring E 8Sprocket 9Lock washer 12 groove of Spindle Repair 1 As illustrated in Fig 8 press fit the compon...

Page 5: ...cs for fixing Motor housing R and L when replacing Armature only If Armature is left in Motor housing grab Fan carefully and remove Armature with Fan from Motor housing When replacing Yoke unit or End...

Page 6: ...sing with Yoke and Armature Therefore Do not pinch finger and Lead wires Fig 14 in this step 3 Set Ring 30 Switch lever and Lock off button in place then Match Handle L with Handle R and tighten Tappi...

Page 7: ...Lead wires for Endbell complete with Lead wire holders Motor housing Circuit diagram Fig D 1 Yellow White Color index of lead wires sheath Black Red 1 2 3 Endbell complete Controller Switch Terminal...

Page 8: ...om Endbell complete and Lead wires between Switch and Terminal in each Lead wire holder as drawn below Switch Terminal Controller Pass Lead wires through Line filter one by one Lead wire holders Lead...

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