Makita BPT351 3 -6. Switch Mechanism cont, Repair, Disassembly/Assembly, Ref. Figs. 34 and

P 10/ 15

Repair
[3] DISASSEMBLY/ASSEMBLY	Fig. 38
[3] -6. Switch Mechanism (cont.)
ASSEMBLING		Pin 2.5
(7) Insert the remaining two Pins 2.5 firmly into Housing set L until they stop		(Ref. Figs. 34 and 35)
as drawn in Fig. 38.		Pin 2.5 (2pcs.)
(8) Install Link plate to Housing L with Pin 3 through Link plate. (Fig. 39)
(9) Insert the projection of Light switch arm into Compression spring 2
firmly. And then insert the axis of Light switch arm into hole of	Housing Fig. 39
L and push Compression spring 2 to the emboss of Housing L. (Fig. 40)		Pin 3
(10) Set Torsion spring 4 in place. Install Safety trigger and Torsion spring 4
		Link plate
to Housing L with Pin 3 as drawn in Fig. 41.
All the components are assembled as drawn in Fig. 42.
(11) Fasten the two positions with two Bind PT3x16 tapping screws as drawn
in Fig. 43 before assembling Housing R to Housing L.
Note: Avoid loosening M3x4 Pan head screw that fastens Lock arm and Pin 5
as much as possible.
If loosening is inavoidable, pretighten M3x4 Pan head screw with Loctite 242 put on the thread and finish the all
reassembling work. After that, check the trigger’s smooth action and finally tighten the screw when the smooth
action can be obtained.
Fig. 40	Fig. 43

Axis of	Compression spring 2
Light switch arm

Hole of Housing L Emboss of Housing L for Light switch arm

Fig. 41 Fig. 42

Pin 3

Torsion spring 4

Safety trigger

Bind PT3x16 tapping screw (2pcs.)

M3x4 Pan head screw