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Makita BUC121RF Quick Start Manual page 3

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[3] DISASSEMBLY/ ASSEMBLY (cont.)
[3]-2. Disassembling/ Assembling Gear Section
DISASSEMBLING
1) Remove Stop ring E-8 from Spindle then remove Sprocket 9 and Lock washer 12.
2) Loosen four 4x18 Tapping screws (Fig. 3) then strike Spindle end using plastic hammer. (Fig. 4)
Bearing housing can be removed.
Note: Do not strike Leaf spring near Spindle.
Fig. 3
4x18 Tapping screws (4 pcs.)
Bearing housing
3) Install Lock washer 12 and Sprocket 9 to Spindle, and hook Stop ring 8 to the groove of Spindle to prevent Lock
washer 12 and Sprocket 9 from being removed.
Note: It is not necessary to set Stop ring 8 in place in this step.
4) Hook Lock washer 12 with two 1R263. Gear section can be removed from the machine. (Fig. 5)
5) Put Gear section on 1R034 as illustrated in Fig. 6, and press down round shaped Spindle end slightly to relieve
the press-fit.
6) Mount 1R280 on round shaped Spindle end (Fig.7) and push out Spindle from Gear section using arbor press.
Fig. 5
Lock
Sprocket 9
washer 12
1R263 (2 pcs.)
Fig. 7
1R280
Oval shaped
Spindle end
Stop ring E-8 hooked
to Spindle's groove
Arbor press
1R034
Fig. 4
Spindle
Fig. 6
Round shaped Spindle end
Ball bearing
696ZZ
Cam
Ball bearing
609LLB
1R034
P 3 / 8
Leaf spring
Arbor press
Helical gear 50
Oval shaped
Spindle end
put in the hole
of 1R034

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