Makita BPT350 Manual

Models No.
Description
PRODUCT
CONCEPT AND MAIN APPLICATIONS
Specification
Standard equipment
Optional accessories
P 1 / 13
Note: The standard equipment for the tool shown above may differ by country.
BPT350
Cordless Pin Nailer
Model BPT350 is the first Makita cordless pin nailer.
Power unit of 14.4V/ 3.0Ah Li-ion battery and unique driving mechanism
enable an operator to shoot 18, 25, 30, 35mm (11/16, 1, 1-3/16, 1-3/8") pin
nails without being disturbed by air hose and with no air compressor.
Belt clip ................................. 1
Nose adapter .......................... 1
Hex wrench 3 ......................... 1
Safety goggle ......................... 1
Plastic carrying case .............. 1 (except BPT350Z)
Pin nails 18 (11/16)/ 25 (1)/ 35 (1-3/8)
Charger DC18RA
Battery BL1430
Battery
Net weight*: kg (lbs)
Capacity: Ah
Cell
Voltage: V
Length
14.4
2.0 (4.4)
3.0
Li-ion
0.6 (1/32)
18, 25, 30, 35
(11/16, 1, 1-3/16, 1-3/8)
Magazine capacity 130 nails
Stroke of hammer: mm (") 59 (2-5/16)
*with Battery BL1430
Diameter
Applicable pin nails:
mm (")
L
H
W
Dimensions: mm (")
Width (W)
Height (H)
Length (L) 245 (9-5/8)
79 (3-1/8)
227 (8-15/16)
TECHNICAL INFORMATION
The items listed below in "Standard Equipment" also come with the above items.
This product is available in the following variations.
BPT350Z
BL1430DC18RA
NoNo
Model No. type quantity Charger
No
Yes
Plastic
carrying case
No
BPT350RF 1
BPT350RFE 2
Battery
Max. Output (W) 175

P 2 / 13
[2] LUBRICATION
Apply Makita grease N. No.2 to the portions designated with the black triangle, and apply molybdenum disulfide
lubricant to the portions designated with the gray triangle to protect parts and product from unusual abrasion.
[1] NECESSARY REPAIRING TOOLS
CAUTION: Remove the battery and the pin nails from the machine for safety before repair/
maintenance.
Pay attention to the handling of Compression spring 17 when disassembling.
Repair
783201-2
1R266
1R267
Hex. wrench 3
Spring pin extractor M2
Spring pin extractor M2.5
Screwing / Unscrewing Hex socket head bolt M4
Disassembling magazine section
Disassembling magazine section
DescriptionCode No. Use for
Fig. 1
Molybdenum disulfide
lubricant
Compression spring 17
Rail Grooves of both sides where Hammer slides
Spur gear 27
(3 pcs)
89
89 Cam lock Portion that contacts 66 Spur gear 55 complete
67 Plane bearing 10 Inside surface that contacts 64 Spur gear 7 complete
64
61
59
13
11
Guide bolt Surface that contacts Spring holder13
Spring holder
Hammer
Holder
13
Hex nut M6
Put Loctite 272 into the threads
when fixing it to Guide bolt .
59 DC motor Pinion gear
61 Internal gear 69 Teeth that engages with Spur gear 27
64 Spur gear 7 complete Teeth that engages with the lower gear
of 66 Spur gear 55 complete
66 Spur gear 55 complete Teeth
Pin and cam portions
Item No. Description Portion to lubricateGrease type
67
66
11
:Makita grease N No.2
:Molybdenum disulfide lubricant
Makita grease N No.2

P 3 / 13
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Replacing Driver
Repair
Front cover
1) Remove four 3x16 Tapping screws bind PT and Front cover. (Fig. 2)
2) Remove Upper plate as illustrated in Fig. 3.
3) Remove Pin 4 for connecting Driver and Hammer. (Fig. 4)
4) Remove Driver as illustrated in Fig. 5.
Note: A few of pin nails often remain in the tool, and if so, it is impossible to insert Driver into Driver guide.
5) Remove two M4x6 Hex socket head bolts and Driver guide cover. Remove the jammed pin nails. (Fig. 6)
6) Slide the new Driver into the groove of Driver guide. (Fig. 7)
Note: If loosening M4x10 Hex socket head bolt(s) by mistake, the stroke of Driver guide may tilt.
In that case, slide Driver into the groove of Driver guide before securing M4x10 Hex socket head bolt(s),
and then secure M4x10 Hex socket head bolt(s) and set Pin 4 in place while keeping the position for Driver's
vertical stroke.
7) Insert Pin 4 for connecting Driver and Hammer.
8) Set Driver guide cover in place with two M4x6 Hex socket head bolts.
9) Slide the side ends of Upper plate into the guides of Housing set. (Fig. 8)
10) Assemble Front cover to Housing set with four 3x16 Tapping screws bind PT.
Tapping screw
bind PT3x16: 4 pcs.
Fig. 2 Fig. 3 Fig. 4 Fig. 5
Fig. 6 Fig. 7
Slide Upper plate
upward. Slide Driver upward.
Driver
Hammer
Pin 4
Driver
Driver guide cover
Hex socket head bolt M4x6
Hex socket
head bolt M4x10
Jammed pin nail
Upper plate
The guides on Housing set
Fig. 8

P 4 / 13
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Replacing Switch, LED circuit and Terminal
Repair
Note: when Motor or Switch is out of order, Hammer of Spring section often stops in the halfway position and
Compression spring 17 is still in compression. It is impossible to remove Motor from Housing L in this
condition.
Therefore, take the following steps.
1) Do the steps 1), 2), 3) and 4) of page 3.
2) Replace the Switch, LED circuit and Terminal under
the condition that Compression spring 17 remains
compressed.
3) Separate housing R by removing Tapping screws and Pan
head screws illustrated in Fig. 9 while holding trigger
section so as not to spring out of housing L.
4) Switch, LED circuit and Terminal are now removed.
[3] -3. Replacing Motor
1) Remove Front cover and Housing R as illustrated in Fig. 2 and Fig. 9.
2) Remove M4x6 Hex socket head bolt. Pull out Upper rail complete, and then separate Magazine ass'y from Housing L
by removing two M4x10 Hex socket head bolts. (Fig. 10)
3) Spring section is secured to Housing R with two 3x16 Tapping screws bind PT. Disconnect Spring section by removing
these screws. (Fig. 11)
4) Insert slotted screwdriver into the gap between Housing L and Rail of Spring section, and then lever up Spring section
with the slotted screwdriver as illustrated in Fig. 12.
Note: 1) Cover Spring section with cloth in order not to pinch your finger.
2) Hold Spring section by hand to prevent Compression spring 17 from jumping out.
5) Remove Motor from Housing L.
Pan head screw
M4x35
Upper rail complete
Pan head screw M4x14
Housing R
Tapping screw
bind PT3x16 for
Housing L and R: 8 pcs.
Fig. 9
Fig. 10
Hold trigger section so
as not to spring out.
Housing L
(The reverse of
Housing R)
Hex socket head bolt M4x6
Housing R
Hex socket head
bolt M4x10
Housing L
Tapping screw bind PT3x16
Holder
Cushion Hammer
Rail
Housing L
Compression
spring 17
Guide bolt
Spring section Holder
Cover Spring section with cloth and hold them by hand.
Compression spring 17
Rail
Slotted screwdriver
Fig. 11 Fig. 12
Hammer stops in
the halfway position

P 5 / 13
[3] DISASSEMBLY/ASSEMBLY
[3] -4. Trigger Section
Repair
DISASSEMBLE
1) Remove Front cover and Housing R. (Fig. 2 and Fig. 9)
2) Remove the parts around trigger section in the following order. (Fig. 13)
1. Safety trigger 2. Light switch arm 3. Link plate 4. Torsion spring 4 5. Pin 2.5 (3 pcs.) 6. Pin 3
3) Disassemble guide plate in order of Figs. 14, 15 and 16.
2. Light switch arm
1. Safety trigger
3. Link Plate
6. Pin 3
4. Torsion Spring 4
5. Pin 2.5
Fig. 13 Fig. 14
Fig. 15 Fig. 16
Fig. 17 Fig. 18
Trigger
Disconnect the hooks.
Turn swing arm.
Guide plate can be pulled off
from Trigger.
Swing arm
Guide Plate
Two Torsion springs 3
Trigger
[3] -5. Spring Section
Tapping screw
bind PT3x16
Housing R Housing L Housing L
Cushion
Hammer
Compression
Spring 17
Holder
Spring holder
Cushion
Hammer
Compression
spring 17
Guide bolt
Rail
Spring section
1) Install Battery BL1430. Slide Sliding door section of Magazine to make anti-fire mechanism invalid.
Pull Trigger in a blink and release it until Hammer reaches the lowest position. (Fig. 17)
Note: Be sure to remove Battery BL1430 after the above step.
2) After removing Housing R and Front cover, separate Spring section from Housing L by removing Two Tapping
screws bind PT3x16. (Fig. 18)
DISASSEMBLE
(One is hooked with the other.
Ref: Fig. 31 and Fig. 32 of page
8)

P 6/ 13
[3] DISASSEMBLY/ASSEMBLY
[3] -5. Spring Section (cont.)
Repair
Guide bolt
Wrench 8
Hex
Nut M6
Holder
Flat
Washer 6
Rail
Guide bolt
Cushion
Cushion
Cushion is fit into the groove of Guide
bolt firmly. Therefore, twist Cushion to
pull it off from the groove.
Turn compression spring 17 counterclockwise while
holding Spring holder with gloved hands.
Spring holders is removed from Compression spring 17.
After removing Guide bolt and Flat washer 8, remove
Spring holder of the opposite side in the same way
illustrated in Fig. 21.
Note: When inserting Spring holder into Compression
spring 17, turn Compression spring 17 clockwise
and twist Spring holder to set in place.
Turn guide bolt counterclockwise
while gripping holder by a gloved
hand.
M6 hex nut, Holder with Rail and
Flat washer 6 are removed from
Guide bolt. Hammer
Fig. 19 Fig. 20
Fig. 21 Fig. 22
Fig. 23
Spring holder
Spring
holder
Compression
spring 17
Flat washer 8
Guide bolt
3) Disassemble the Spring section in order from Fig. 19 to Fig. 22. Spring section is removed as illustrated in Fig. 23.
Hex
Nut
Holder
Spring holder
Rail Cushion
Hammer
Flat washer 6
Flat washer 8
Spring holder Guide bolt
Compression spring 17
DISASSEMBLE

P 7 / 13
[3] DISASSEMBLY/ASSEMBLY
[3] -6. Spring section (cont.)
Repair
ASSEMBLE
Hook portion of
Hammer
Hook portion
of Hammer
Flat washer 4
Tapping Screw bind PT 3x16
Tapping screw
bind PT 3x16
Spring section
Spring section
Roller portion of
Spur gear 55
1) Take the reverse steps of the disassembling procedure for Spring section. Refer to Page 6.
2) Secure Spur gear 55 complete with Flat washer 4 and 3x16 Tapping screw bind PT. Adjust the position of Roller of
Spur gear 55 complete so that it comes to under the hook portion of hammer when installing spring section in Housing
L. (Fig. 24)
3) Secure spring section with 3x16 Tapping screw bind PT. (Fig. 25)
4) After assembling housing R, mount driver guide, driver, and driver guide cover. Refer to Page 3.
Fig. 24
Roller
(The position
is lower than
that of the hook
portion of hammer)
Fig. 25

P 8 / 13
Repair
ASSEMBLE
Fig. 26
Fig. 28
(1) Assemble Cam block section to Spur gear 55 complete. (Fig. 26) Usually, there is no need to disassemble Cam block
section for repair.
Note: Put Makita grease N No.2 to the inner and the outer peripheries of Internal gear 69, the pins of Spur gear 7
complete and the teeth of Spur gear 55 complete.
(2) Mount the following parts on Housing L (Fig. 27);
Spur gear 55 complete, Cam block section, Lock arm section and two Leaf springs
Note: When disassembling Lock arm section, do not remove + M3x4 Pan head screw. It becomes easy to set gear
section in place.
Regarding two Leaf springs, install them along the space for Internal gear 69. Two Leaf springs have to be separated
from the center of the space as illustrated in Fig. 28.
(3) The rim portion of Internal gear 69 has to face Driver. Therefore, the rim portion of Internal gear 69 faces the opposite
side of DC motor and is assembled to Internal gear section as illustrated in Fig. 29.
(4) Install Anti back plate to Spur gear 7 complete. Pay attention to the direction of the tails of Anti back plate. (Fig. 30)
(5) Install the assembled parts in Housing L. (Fig. 31) Be sure to put Roller portion of Spur gear 55 complete under
the hook of Hammer.
[3] -5. Motor and Gear Section
Spur gear 55
complete
Housing L
Spur gear 7
complete
Tails of Anti back plate
Cam block section (with Push pin, Spring
pin 2-8 and Compression spring 2.4
Lock arm section
(with Pin 5 and
+ Pan head
screw M3x4)
Lock arm
Fig. 27
Spur gear
55 complete
Cam block
Pin 5
Fig. 29
Distance B
Distance A
Distance A= Distance B
Center line
Leaf spring
Leaf spring
Leaf spring
for Internal
gear 69
Rim portion
Flat washer 12
DC motor
Spur gear 7
complete
Spur gear 27:
3 pcs.
Space of Housing L for
Internal gear 69
Internal gear 69
Caution: If using the tool on condition that Roller portion of Spur gear 55 complete is put on the hook of Hammer
by mistake, DC motor runs without transmitting the torque to gear section.
DC Motor
Plane
bearing 10
Mount Plane bearing
10 on Spur gear 55
complete. Install Plane
bearing 10 into the
hook of Spur gear 55
complete.
Fig. 30 Fig. 31
Internal gear 69
Roller portion of Spur gear
55 complete
Hook of Hammer
Spur gear 55 complete
Hook of Spur gear 55 complete
Anti back plate
Rim portion of Internal gear 69

P 9/ 13
[3] DISASSEMBLY/ASSEMBLY
[3] -6. Switch Mechanism
Repair
ASSEMBLE
Fig. 33
Fig. 34 Fig. 35
Fig. 36 Fig. 37
Trigger
Trigger
(1) Insert Guide plate and Compression spring 4 into Trigger. (Fig. 32)
(2) Hook the short tail of Torsion spring 3 with Swing arm, and then insert the
Torsion spring 3 into Swing arm.
(3) Insert Swing arm into the notch of Guide plate.
(4) Insert Pin 2.5 through the holes of Trigger and the grooves of Guide plate while
setting two Torsion springs 3 as illustrated in Fig. 33 and secure Pin 2.5 with
Stop ring E-2.0.
(5) Hook one Torsion spring 3 with the other (Ref. Fig. 33) as illustrated in Fig. 34.
Note: Torsion spring 3 for Swing arm is different from Torsion spring 3 for Guide plate and Switch arm.
(6) Hook the protrusion of Trigger with the notch of Lock arm. (Figs. 34 and 35)
(7) Install Trigger section in Housing L while compressing Compression spring 4 to put it on the rib of Housing L as
illustrated in Fig. 35.
(8) After putting Switch arm in Guide plate, insert Pin 2.5 through the holes of Guide plate and Switch arm. Pay attention
to the direction of Switch arm. Refer to Fig. 36.
(9) Install Torsion spring 4 for Guide plate and Switch arm (Ref. Fig. 33) as illustrated in Fig 37.
Compression
spring 4
Pin 2.5 Pin 2.5
Swing arm
Long tail of Torsion
spring 3 for hooking
the other Torsion
spring 3 Guide plate
Guide plate
Viewed from the upper side of
the assembled Trigger Section
Torsion spring 3
for inserting Pin 2.5
(Ref. Fig. 35)
Torsion spring 3
Stop ring E-2.0 Stop ring E-2.0
Stop ring E-2.0
Stop ring E-2.0
Long tail of Torsion spring 3
(come from inside of Swing arm)
Protrusion of Trigger hooked with notch of Lock
arm
Compression
spring 4
Rib of Housing L
for compression
spring 4
Tail of Torsion spring 3
(located out of Trigger)
Torsion spring 3
Swing arm
Housing R
side
Housing
L side
Housing R side
Fig. 32
Trigger
Guide plate
Compression spring 4
Short tail of Torsion spring 4 for Swing arm
Protrusion of
Trigger
(for Lock arm)
Note: Switch arm has to be assembled
so as to contact Push pin.
Otherwise, the machine does not
run even if Switch trigger is pulled.
1) Put short tail of Torsion spring 4
on Guide plate.
2) Put long tail of
Torsion spring 4
on Switch arm.
Pin 2.5
Guide plate
Switch arm

P 10/ 13
[3] DISASSEMBLY/ASSEMBLY
[3] -6. Switch Mechanism (cont.)
Repair
ASSEMBLE
Fig. 38
Fig. 39
Fig. 41 Fig. 42Fig. 40
7) Insert the remaining two Pins 2.5 firmly into Housing set L until
they stop as illustrated in Fig. 38.
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 L and push Compression spring 2 to the emboss of Housing L.
(Fig. 40)
10) Set Torsion spring 4 in place. Install Safety trigger and Torsion spring 4
to Housing L with Pin 3 as illustrated in Fig. 41.
12) As illustrated in Fig. 42, the relevant parts are assembled.
Pin 2.5 (two pcs.)
Pin 2.5
(Ref. Figs. 34 and 35)
Pin 3
Link plate
Compression
spring 2
Emboss of
Housing L
Torsion spring 4
Safety trigger
Pin 3
Axis of Light
switch arm
Hole of Housing L
for Light switch arm
[3] DISASSEMBLY/ASSEMBLY
[3] -7. Magazine
DISASSEMBLE
Caution of ASSEMBLE
Shoulder pin 5-7 (orange color)
Spring pin 3-18
Lever
Spring pin 2-8
Nail guide holder
Upper rail complete
Upper rail
complete
Pusher
Nail stopper: 3 pcs.
1) Pull off Upper rail complete from Magazine after removing M4x6 Hex socket
head bolt. Refer to Fig. 10.
2) Pusher is just inserted into the slit of Shoulder pin 5-7. Therefore, Pull Pusher
off from the slit simply. (Fig. 43)
3) Remove three Nail stoppers by pushing toward the direction designated with
black arrow in Fig. 44.
4) Use 1R266 to remove Spring pin 2-8 from Nail guide holder.
Use 1R267 to remove Spring pin 3-18 from Lever. (Fig. 45)
Fig. 43
Fig. 44 Fig. 45
Fig. 46
Lever
Upper rail
complete
Slide door cap
When installing Slide door cap into Upper rail complete,
press Slide door cap fully to designated direction as illustrated
in Fig. 46 and tighten M4x10 Pan head screw at the same time.
While facing the slit of Shoulder pin 5-7 to the magazine side
as illustrated in Fig. 43, install Pusher to Upper rail complete.

P 11 / 13
[3] DISASSEMBLY/ASSEMBLY
[3] -8. Fastening Torque
Repair
Driver guide cover
27 Driver guide
29
12
12
51
Magazine
Lower Rail
Spacer
57
Lock Arm
Pin 5
Hex socket head bolt M4x10 for assembling Rail and Holder
Item No. Description Fastening Torque
2.9 - 4.9 N.m
29 Hex socket head bolt M4x14 for assembling Driver guide and Magazine 2.0 - 3.0 N.m
27 Hex socket head bolt M4x6 for assembling Driver guide cover and Driver guide 2.9 - 4.9 N.m
51 Hex socket head bolt M3x10 for assembling Lower rail and Magazine 0.8 - 1.0 N.m
57 Pan head screw M3x4 for assembling Pin 5 and Lock arm 0.8 - 1.0 N.m
Fig. 38
Circuit diagram
Switch for
LED circuit
Terminal
DC Motor
Red marking for distinction of + Terminal
Color index of lead wires' sheath
Black
Red
Orange
Fig. D-1
Start point regulator
LED
circuit
Main Switch
(ON-OFF Switch)
COM
NO
NO
COM
COM NO

Wiring diagram
P 12/ 13
Housing L Side
Flag connector
Flag connector with lead wires (black) has to be connected to - Terminal
so that the lead wires pass over the mark of - poles.
Flag connector with lead wires (orange) has to connected to + Terminal
so that the lead wires face the opposite side against the mark of + poles.
Flag Connector
Lead wires (orange)
Lead wires (black)
Terminal
Wiring to Terminal
Wiring to D.C Motor
Wiring to Switch
Mark of Poles
Housing Set (L) Side
Red marking for distinction of + Terminal
Flag connectors have to be connected so that the wires faces Housing L side.
Connect Flag connector with lead wire (red) to Terminal with red marking.
Flag Connector
Terminal with Red marking
Lead Wire (black)
Lead Wire (red)
Terminal without red marking
Flag connector with lead wire (orange) has to be connected so that
the Lead wire faces Housing L side.
Lead wire
(orange)
Fig. D-2
Fig. D-3
Fig. D-4

Wiring diagram
P 13 / 13
Start point regulator
Boss A
Lead wire (red)
to + Terminal of
DC Motor
Lead wire (black) for connecting
ON-OFF Switch and Start point regulator
Lead wire
holder A
Guide Lead wire (red) of Start point
regulator to DC motor while passing it
between boss A and lead wire holder A.
Fix lead wire (black) of ON-OFF switch
with lead wire holder A.
Main switch (ON-OFF Switch)
put on Start Point Regulator
LED Circuit
Rib B
Rib A
to Switch for
LED Circuit
to Terminal
Lead wires (red and black) of LED circuit pass
between rib A and rib B so as not to put them
on the LED circuit.
Switch for LED Circuit
Light switch Arm
Terminal Lead Wire Holder B
Lead wire holder B
DC Motor
LED lead wire (red)
Lead wire (red) of
Start point regulator
Wall of Housing L
Put lead wire (red) of Start point regulator
on LED lead wire (red). Pass these lead
wires (red) between lead wire holder B and
the wall of Housing L.
Rib
Lead wire
holder A
Pass the following lead wires
between rib and inner wall of Housing L.
*Lead wire (orange) for connecting
ON-OFF switch with terminal
*Lead wire (orange) for connecting
Switch for LED circuit with Terminal
*Lead wire (red) for connecting
LED circuit with Switch for LED circuit
*Lead wire (red) for connecting
Start point regulator and DC motor
LED Circuit
ON-OFF
Switch
See Fig. D-5.
See Fig. D-6.
See Fig. D-7.
Fig. D-5
Fig. D-6 Fig. D-7