Makita 4341CT Manual

Continuous Rating (W)
Voltage (V) Cycle (Hz) Input Output Max. Output(W)
120 6.3 50 / 60 720 320 700
220 3.4 50 / 60 720 320 700
230 3.3 50 / 60 720 320 700
240 3.2 50 / 60 720 320 700
Model No.
Description
PRODUCT
Current (A)
TECHNICAL INFORMATION
CONCEPT AND MAIN APPLICATIONS
Specification
Standard equipment
Optional accessories
< Note > The standard equipment for the tool shown may differ from country to country.
P 1 / 14
4341CT, 4341FCT
Jig saw
H
W
L
Dimensions : mm ( " )
Width ( W )
Height ( H )
Length ( L ) 271 (10-11/16)
188 (7-3/8)
73 (2-7/8)
* Jig saw blade set (including B-10: 2 pcs., BR-13: 2 pcs., B-22: 2 pcs.)......... 1 set
* Cover plate ..................................................................................................... 1 pc.
* Kerf board ..................................................................................................... 1 pc.
* Hex wrench ..................................................................................................... 1 pc.
* Dust nozzle (only for Europe) ......................................................................... 1 pc.
* Plastic carrying case ........................................................................................ 1 pc.
* Guide rule
* Guide rail set
* Guide rail adaptor
* Kerf board
* Dust nozzle
* Hose
* Jig saw blade No.51
* Jig saw blade No.58
* Jig saw blade No.B-8
* Jig saw blade No.B-10
* Jig saw blade No.B-11
* Jig saw blade No.B-12
* Jig saw blade No.B-13
* Jig saw blade No.B-14
* Jig saw blade No.B-15
* Jig saw blade No.B-16
* Jig saw blade No.B-17
* Jig saw blade No.B-18
* Jig saw blade No.B-19
* Jig saw blade No.B-21
* Jig saw blade No.B-22
* Jig saw blade No.B-23
* Jig saw blade No.B-24
* Jig saw blade No.B-25
* Jig saw blade No.B-26
* Jig saw blade No.B-27
* Jig saw blade No.B-16L
* Jig saw blade No.BR-13
* Plastic base plate
The above mentioned body handle type jig saw is the
advanced version of the existing model 4305T series.
Its brief benefits and features are
* New tool less blade change system
* Incredibly low vibration and noise level
* Built-in electronic for keeping constant speed
and soft start
* Pre-setting speed dial for optional speed setting
In addition to the above features, Model 4341FCT
is equipped with LED job light for easy tracing your cutting line.
* With attaching jig saw
blade No. B-16L(optoinal accessory),
800 - 2,800
26 ( 1 )
10 (3/8)
20 (25/32)
* 135 (5-5/16)
Strokes per min. : spm.= min.-1
Length of Stroke : mm ( " )
Blade
shank
Max.cutting
capacities
: mm (")
Wood
Mild Steel
Aluminum
2.4 (5.3)
2.5 (8.2)
by double insulation
Net weight : Kg (lbs.)
Cord length : m (ft)
Speed control
Soft start
Variable speed
Protection from electric shock
MAKITA Type
BOSCH Type
Orbital action of blade Yes / 3 stages
Yes
Electronic
Yes
Yes
Yes

Repair
P 2 / 14
< 1 > Lubrication
Apply MAKITA grease FA. No.2 to the portions marked with black triangle, and machine oil No.120
to the portions marked with gray triangle to protect parts and product from unusual abrasion.
Linear guide
Linear guides
Balance plate
Balance plate
Gear complete
Push plate
Retainer
Push plate
Retainer
Slider
Crank complete
Pins for supporting
balance plate
Push pin
Push pin
Blade holder
Gear housing
Needle bearing 407
Gear housing
cover
Gear housing
A
B
C
Parts' nameLubricant to be applied The portion to be lubricated
MAKITA grease FA. No.2
The positions painted with gray
The three pins which supports balance plate.
The portion where contacts gear complete.
The portion where contacts retainer.
The portion where contacts push plate.
The portion where contacts slider.
The portion where contacts dust seal.
Slider The portion where contacts needle bearing 407.
The hole where the rod reciprocates.
Gear housing cover
Gear housing cover Its whole part
Machine oil No.120
Rod
Rod

Repair
P 3 / 14
Hex socket head bolt M5x18
Base
Torsion spring 6
Tool opener
Pan head screw M4
< 2 > Disassembling tool opener
1. Separate base from the jig saw unit by unscrewing hex socket head bolt M5x18. See Fig. 1.
2. Unscrew pan head screw M4. Then tool opener and torsion spring 6 can be disassembled. See Fig. 1A.
< 3 > Assembling tool opener
1. Put torsion spring 6 into tool opener . And fasten tool opener with pan head screw M4. See Fig. 1A above.
2. Bring the tail of torsion spring 6 which is extruding from tool opener, to the original position by turning it
clockwise. See Fig. 2.
Fig. 1 Fig. 1A
The tail of
torsion spring 6
The tail of torsion spring 6 pushed
into the original position.
Blade holder
Tool opener
Fig. 2
Gear housing cover
Gear
housing
Bottom view
(View from blade holder side)
< 4 > Disassembling head cover section (Model 4341T / 4341CT / 4341FCT)
1. Separate head cover R from head cover L by unscrewing the following screws. See Fig. 3.
2 pcs. of tapping screws 4x40,
1 pc. of tapping screw M4x50
2 pcs. of tapping screws 4x40
1 pc. of tapping screw M4x50
Head cover R
Head cover L
Fig. 3
< Note in disassembling >
Head covers R and L have spikes respectively for fixing on motor housing.
Be careful, not to break them, when disassembling.

Repair
P 4 / 14
1.After taking off safety wire from gear housing cover, unscrew 4 pcs. of tapping screws CT 4 x 16.
Then, gear housing cover can be separated from gear housing. See Fig. 4.
< 5 > Disassembling gear housing cover section
4341T, 4341CT, 4341FCT
4 pcs. of
Tapping screws CT 4 x 16
Safety wire
Gear housing cover
Fig. 4
Fig. 5
2.Take off stop ring E-3 with small flat head screwdriver. And push slider to the lower dead point. See Fig. 5.
Stop ring E-3
Pin 4
Rod
Slider Slider in the lower
dead point
Rod
3.Slide pin 4 in order to disconnect rod with slider. And then, pull out rod from gear housing cover.
Disassemble linear guides by unscrewing 4 ps. of pan head screws M4 x 10. So, leaf spring, pin 4 and slider can be
disassembled from gear housing cover. See Fig. 6.
Fig. 6
Rod
Pin 4
Slider
Pin 4
Slider
Linear guides
Linear guides
4 ps. of
Pan head
screws M4 x 10
Leaf spring
Gear housing
cover

Repair
P 5 / 14
The rolling portion has to be
faced to gear housing side.
Gear housing cover.
Leaf spring
2. Put leaf spring in gear housing cover, paying attention to its assembling direction as illustrated in Fig. 7.
And insert rod into gear housing cover, paying attention to the direction of hook of blade holder
as illustrated in Fig. 7A.
3. Align the hole of slider and the same of rod, and insert pin 4 into the aligned holes from left side as illustrated
in Fig. 8.
Stand slider and insert a pair of linear guide as illustrated in Fig. 8A.
4. Lifting up leaf spring, lay a pair of linear guide in order to position leaf spring on linear guides as illustrated
in Fig. 9.
And push slider to the center of linear guides. Fasten linear guides with 4 pcs. of pan head screws
M4 x 10 as illustrated in Fig. 9A.
1. Assemble tool opener to gear housing cover with referring to Fig. 1A and Fig. 2 at page 3.
< 6 > Assembling gear housing cover section
Gear housing side
Tool opener
Rod
Rod
Rod
Blade
holder
Fig. 7 Fig. 7A
Blade holder's hook
Blade holder's hook has
to contact with tool opener,
when detaching the blade
with tool opener.
Blade holder
Gear housing cover
Tool opener
Pin 4
(Insert it from left side.)
Slider
Slider
Slider, stood for setting
a pair of linear guide
Fig. 8 Fig. 8A
Rod inserted into
gear housing cover
Linear guides
Slider
Lift up leaf spring.
Lay linear guides.
Leaf spring
Linear guide
Slider
Fig. 9
Push slider to the
center of linear guides.
Pan head screws M4x10
Fig. 9A

Repair
P 6 / 14
Stop ring E-3
Pin 4
Rod
5. Assemble stop ring E-3 to pin 4 as illustrated in Fig. 10.
Check, whether slider can reciprocate on linear guide smoothly, or not.
If slider does not reciprocate smoothly, incorrectly assembled linear guides can interfere with slider
in reciprocating. Try again to assemble linear guides correctly.
6. Lubricate the parts assembled in gear housing cover with referring to "< 1 > Lubrication " at page 2.
7. Aligning slider to needle bearing 407 on crank complete, assemble gear housing cover section to gear housing
as illustrated in Fig. 11. Do not forget to assemble packing between gear housing cover and gear housing.
See Fig. 11A.
Fig. 10
Slider
Linear guide
4341T, 4341CT, 4341FCT
4 pcs. of
Tapping screws CT 4 x 16
Safety wire
Gear housing cover
Packing
Crank complete
Balance plate
Needle bearing 407
Slider
Gear housing
Align slider to needle bearing 407
on crank complete
Gear housing
cover
Fig. 11
Fig. 11A

Repair
P 7 / 14
< 7 > Disassembling blade holder
< 8 > Assembling blade holder
1. Disassemble rod with referring to "< 5 > Disassembling gear housing cover section" at page 4.
1. Apply MAKITA grease FA No.2 to push pin and set it in the hole of rod. And assemble torsion spring 15 to rod by
inserting its tail shown in Fig. 13 into the hole of rod.
2. Set blade holder to rod as illustrated in Fig. 14. And bring the tail of torsion spring 15 to the space A of blade
holder as illustrated in Fig. 15.
3. Push rod into blade holder, and assemble retaining ring R-18 to the groove in blade holder as illustrated in Fig. 16.
4. Assemble dust cover as illustrated in Fig.17.
2. Disassemble dust cover, and then disassemble retaining ring R-18. as illustrated in Fig. 12.
So, blade holder and torsion spring 15 can be separated from rod as illustrated in Fig. 12A.
Dust cover
Retaining
ring R-18
Rod
Blade holder Blade holder
Torsion spring 15
Be careful, not to lose push pin,
when disassembling.
Fig. 12 Fig. 12A
Insert this tail into
the hole of rod. Fig. 13
Push pin
Torsion spring 15
Rod
Aligning the mark
of blade holder and
push pin, set blade holder
to rod. Blade holder
Fig. 14
Fig. 15
Bring this tail to the
space A of blade
holder by turning
clockwise.
Space A
Retaining ring R-18 Dust cover
Fig.17
Fig. 16
Press dust cover to assemble
firmly to blade holder.

Repair
P 8 / 14
< 9 >Disassembling parts in gear housing
2. Locking crank complete with something bar-formed metal, unscrew 2 pcs. of hex socket head bolts M4 x 12 as
illustrated in Fig.19.
3. Disassemble retaining S-8. Then, the inner parts can be disassembled from gear housing as illustrated in Fig.20.
< Note in disassembling>
2 pcs. of hex socket head bolts M4 x 12 are adhesive bolts.
It is recommended to unscrew them with impact driver.
2 pcs. of hex socket
head bolts M4 x 12
Crank complete
Balance plate
No.1R235
Round bar for arbor
Fig.19
Fig.20
Retaining ring S-8
1. After taking off safety wire from gear housing cover, unscrew 4 pcs. of tapping screws CT 4 x 16.
Separate gear housing cover from gear housing. See Fig. 18.
4341T, 4341CT, 4341FCT
4 pcs. of
Tapping screws CT 4 x 16
Safety wire
Gear housing cover
Fig. 18
Retaining S-8
Push plate
Seal plate
Needle bearing 407
Flat washer 8
Gear housing
Balance plate
Gear complete

Repair
P 9 / 14
<10 > Assembling parts in gear housing
Fig.21 Fig.22 Fig.23
1. Assemble flat washer 8 to the shaft in gear housing. See Fig. 21.
4. Assemble gear complete and balance plate to the shaft in gear housing. See Fig. 23.
5. Assemble crank complete to gear housing. With turning crank complete, press it down to the position in which
you can see the shaft's groove for retaining ring S-8. See Fig. 24.
6. Lock crank complete with something like 1R235 "round bar for arbor", and fasten crank complete
with 2 pcs. of hex socket head bolts M4 x 12 with adhesive. See Fig. 25.
7. Assemble retaining ring S-8 to the shaft of gear housing. See Fig. 26.
2. After assembling seal plate to push plate, assemble them to the shaft in gear housing. See Fig. 22.
3. Lubricate the parts with referring to " < 1 > Lubrication " at page 2.
< Note >
Do not fasten with the used hex socket head bolts M4 x 12. The fresh adhesive hex socket head bolts M4 x 12
have to be used. The fastening torque of these bolts is 2.4 - 3.5 N.m.
Gear housing
Flat washer 8
Gear housing
Push plate
Seal plate
Gear complete
Balance plate
Fig. 24 Fig. 25
Press crank complete down to the position where
you can see the shaft's groove for retaining ring S-8.
Crank complete 2 pcs. of hex socket
head bolts M4 x 12
Crank complete
Balance plate
Retaining ring S-8
Something like
1R235 "round bar for arbor"
Fig. 26
Retaining ring S-8
Flat washer 8
Push plate
Seal plate
Balance plate
Gear complete
Crank complete
Gear housing
Groove for retaining ring S-8

Repair
P 10 / 14
< 11 > Disassembling armature (4341T, 4341CT, 4341FCT)
Fig. 31
1. With referring to the following section, disassemble head cover L and R, and gear housing cover.
"< 4 > Disassembling head cover section" at page 3
"< 5 > Disassembling gear housing cover section" at page 4
2 . Disassemble rear cover by unscrewing tapping screw 4 x 18. And then, disassemble carbon brushes.
See Fig. 31 Carbon brushes
Tapping screw 4 x 18
Rear cover
3. Disassemble retaining ring S-8, and separate crank complete, balance plate and gear complete from the shaft of
gear housing as illustrated in Fig. 32.
< Note in disassembling >
* No need to disassembling hex socket head bolt M4 x 12, crank complete and gear complete from balance plate.
* Be careful, not to lose needle bearing 407.
Retaining S-8
Crank complete
Needle bearing 407
Balance plate Fig. 32
4. Unscrew 4 pcs. of tapping screws M4 x 30, and separate gear housing from motor housing.
Separate armature from gear housing as illustrated in Fig. 33.
4 pcs. of
tapping screws
M4 x 30
Gear housing
Armature
Motor housing Fig. 33
Gear complete
5. Disassemble self lock with small flat head screwdriver. Then, magnet sleeve, wave washer 6 and rubber ring 19
can be disassembled from armature shaft as illustrated in Fig. 34.
Fig. 34
Self lock
Magnet sleeve
Wave washer 6
Rubber ring 19
Ball baring 607
Insulation washer
(Magnet sleeve is not used in
model 4341T.)

Repair
P 11 / 14
Fig. 36
< 12 > Assembling armature
< Note in assembling>
1. Do not assemble the used self lock. The self lock has to be always replaced with the fresh one.
2. Pay attention to the assembling direction of self lock and wave washer 6. See Fig. 36
3. The magnet sleeve is installed to the armature shaft on commutator side for sensing the variation of rotating speed.
If it would be damaged, the electronic speed control does not work any more.
So, applying 1R026 " Bearing setting pipe" to self lock, press it with your hand, instead of with arbor press.
Self lock
Wave washer 6
Magnet sleeve
Insulation washer
Ball bearing 607LLB
Rubber ring 19
< 13 > Disassembling lever 17 ( for orbital action mode change)
1. With referring to the following section, head cover L and R, and gear housing cover.
2. Disassemble stop ring E-5 from the shaft portion of lever 17 with small flat head screwdriver. See Fig. 37.
3. Aligning lever 17 with indication " III ", pull out it from gear housing. Then, cap 5 and compression spring 3
are disassembled. See Fig. 37A.
"< 4 > Disassembling head cover section section" at page 3"
"< 5 > Disassembling gear housing cover section" at page 4
Fig. 37 Fig. 37A
Stop ring E-5 Align lever 17 with indication " III ".
Compression
spring 3
Cap 5
Lever 17
6. Disassemble ball bearing 607 LLB from armature shaft as illustrated in Fig. 35.
Ball bearing 607 LLB Insulation washer
No.1R269 Bearing extractor
Fig. 35

Repair
P 12 / 14
< 14 > Disassembling switch rod (4341T, 4341CT, 4341FCT)
1. With referring to "< 11 > Disassembling armature (4341T, 4341CT, 4341FCT)" at page 10, disassemble rear cover.
2. Disassemble the following parts from motor housing. See Fig. 38.
3. Disconnect switch rod from switch lever by pulling. Then, switch rod can be disassembled from motor housing.
See Fig. 39.
Model No. Parts to be disassembled
4341FCT LED circuit, Switch, Switch block unit, Controller
4341CT Switch, Switch block unit, Controller
4341T Switch, Switch block unit,
LED circuit
Switch
Switch block unit
Controller
Switch rod
Fig. 38 Fig. 39
1. Insert switch rod into motor housing and align the wide square hole of switch rod with the wide square hole of
motor housing. See Fig. 40 and Fig. 40A.
2. Pressing the switch rod to the wall of motor housing, insert switch lever into the aligned wide square holes as
illustrated in Fig. 38A.
3. Pushing the switch rod to the gear housing side, interlock switch lever with switch rod.
4. Connect lead wire from LED circuit to controller.
< 15 > Assembling switch rod
Fig. 40A
Switch lever
Press the inserted switch rod
to the wall of motor housing
with aligning the wide square
holes of switch rod to the wide
square hole of motor housing.
Switch lever
Motor housing
Motor housing
Switch rod
Switch rod
Wide square hole
of switch rod
Wide square hole
of motor housing
Fig. 40

P 13 / 14
4341CT (with controller, without LED jog light)
4341FCT (with controller and LED job light)
: Connecting with terminal
Controller
Switch block unit
Noise
suppressor Noise suppressor is not used
in some countries.
SB8
SB7
SB6
SB5
SB4
SB3
SB2
SB1
SB9
Switch
CT1
CT3
CT4
CT2
Brush
holder Brush holder
LED Job light
LED job light is not
installed in 4341CT.
This terminal is not
used in the product
for some countries.
This terminal is not
installed in the product
for low voltage.
Circuit diagram in the rear of motor housing
The electrical parts in Model 4341T series models are connected
with terminals each other, in stead of with lead wires.
Power supply cord
Field

Wiring diagram
P 14 / 14
4341T (without controller and LED jog light)
4341T (without controller and LED jog light)
Circuit diagram in the rear of motor housing
The electrical parts in Model 4341T series models are connected
with terminals each other, in stead of with lead wires.
: Connecting with terminal
Switch block unit
Noise
suppressor In case of noise suppressor with
2 lead wires, put it into switch block
unit.
SB7
SB6
SB4
SB3
SB2
SB1
Switch SB5
Power supply cord
Brush
holder Brush holder
This noise suppressor is
not used for some countries.
To be connected to field core.
Noise
suppressor
Support
unit
Support
unit
Field
Noise
suppressor
Motor housing
Grounding terminal
Fix grounding lead wire
(see-through) with lead
holder. Lead holder
Do not slack the grounding lead
wire (see-through) between lead
holder and grounding terminal.