Makita BST220 Technical Information page 4

R
epair
[4] DISASSEMBLY/ ASSEMBLY
[4]-3. Hammer, Cushion
DISASSEMBLING
1) Remove Housing R. (Refer to previous page.)
2) Remove Compression spring 4. (Fig. 8)
3) Remove Fix plate and 4x18 Tapping screws (2pcs.) (Fig. 9)
4) Remove Safety lever guide and M4x6 Hex. socket head bolts (2pcs.), then loosen
M5x18 Hex. socket head screws (2pcs.) with Hex wrench 5 and 1R230. (Fig. 10)
5) Remove Magazine section.
6) Remove Guide plate, Hammer driving section and Safety cover. (Fig. 11)
7) Remove Slide plate from Housing L. (Fig. 12)
Fig. 9
4x18 Tapping screw (2pcs.)
Fig. 11
Safety lever
8) Remove Hammer by pulling out Pin 4 from Driver lock. (Fig. 13)
9) While holding Holder portion by gloved hand as illustrated in Fig. 14 (or clamping in vise), loosen Guide bolt by
hooking the flats and turning counterclockwise by monkey wrenches. When Guide bolt is separated,
Compression springs is slightly released.
10) Cushion etc. held in the gloved hand are removed as illustrated in Fig. 17 of next page.
Fig. 13
Pin 4
Driver lock
Fig. 10
M5x18 Hex. socket
head bolt (2pcs.)
Fix plate Magazine section
Hammer driving
section
Guide plate
Fig. 14
flats of
Hammer
head portion
of Guide bolt
Fig. 8
Fig. 12
P 4/ 9
Compression
spring 4
Safety lever guide
M4x6 Hex. socket
head bolt (2pcs.)
Slide plate