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P 4/ 9

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

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. 

[4] DISASSEMBLY/ ASSEMBLY
[4]-3. Hammer, Cushion

R

epair

Fig. 9

Fig. 10

Fig. 11

Fig. 12

Fig. 13

Fig. 14

Fig. 8

4x18 Tapping screw (2pcs.)

Fix plate

Compression
spring 4

Safety lever guide

Magazine section

Slide plate

Hammer driving
section

Guide plate

Safety lever

M5x18 Hex. socket
head bolt (2pcs.)

M4x6 Hex. socket
head bolt (2pcs.)

Pin 4

Driver lock

Hammer

flats of
head portion
of Guide bolt

DISASSEMBLING

Summary of Contents for BST220

Page 1: ...es length 10mm 3 8 13mm 1 2 16mm 5 8 19mm 3 4 22mm 7 8 Battery chargers DC18RA DC24SA DC24SC Li ion Batteries BL1415 BL1815 L H W Dimensions mm Width W Height H Length L 251 9 7 8 BST221 BST220 247 9...

Page 2: ...socket head bolts mainly for Driver guide and Holder 4 9 up to 7 4 N m M4x4 Pan head screw mainly for Adjuster base 0 6 up to 1 0 N m 1 NECESSARY REPAIRING TOOLS CAUTION Remove Battery and Staple for...

Page 3: ...h and Terminal can be replaced 5 Remove Spur gear 55 complete and then lever up Spur gear 7 complete with slotted screwdriver Fig 6 Internal gear 69 DC motor and their linked parts come with Spur gear...

Page 4: ...er 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 s...

Page 5: ...g L Fig 18 6 Check that Safety lever can be slid smoothly 7 Secure both ends of Hammer driving section with 4x18 Tapping screws 2pcs and Fix plate Fig 9 8 Move Safety lever to the forward position to...

Page 6: ...l of Torsion spring 3 Switch button Pin 3 Put the bend portion of Release plate between Switch button and wide width of Leaf spring Put the hook portion of Leaf spring along the inside of Trigger Put...

Page 7: ...an be seen Fig 25 7 Insert Leaf spring into Housing L Inserting Leaf spring into Housing L before installation of the assembled parts causes difficulty 8 Plate and Spur gear 55 complete have to be fix...

Page 8: ...ther spring end using Pincette And hook the spring end with the hook on the bottom of Sub magazine as illustrated in Fig 30 4 As for Lever portion assembling the components in accordance with the way...

Page 9: ...ex of lead wires sheath Black Red White DC Motor Terminal Do not put Lead wires on rib Face Lead wires to DC motor side when connecting Terminal and Flag connectors of the Lead wires Face Lead wires t...

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