Makita 3708F User Manual

INSTRUCTION MANUAL
MANUEL D'INSTRUCTION
MANUAL DE INSTRUCCIONES

Trimmer
Affleureuse
Recortadora

3708
3708F
3708FC

002000

DOUBLE INSULATION
DOUBLE ISOLATION
DOBLE AISLAMIENTO

WARNING:

For your personal safety, READ and UNDERSTAND before using.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.

AVERTISSEMENT:

Pour votre propre sécurité, prière de lire attentivement avant l’utilisation.
GARDER CES INSTRUCTIONS POUR RÉFÉRENCE ULTÉRIEURE.

ADVERTENCIA:

Para su seguridad personal, LEA DETENIDAMENTE este manual antes de usar la herramienta.
GUARDE ESTAS INSTRUCCIONES PARA FUTURA REFERENCIA.

ENGLISH

SPECIFICATIONS

Model 3708 / 3708F 3708FC

Collet chuck capacity 1/4” 1/4”

No load speed (RPM) 35,000/min. 26,000/min.

Overall length 308 mm (12 - 1/8”) 308 mm (12 - 1/8”)

Net weight 1.3 kg (2.9 lbs) 1.3 kg (2.9 lbs)

• Due to our continuing programme of research and development, the specifications herein are subject to change
without notice.

• Note: Specifications may differ from country to country.

GENERAL SAFETY RULES

USA002-2

(For All Tools)

WARNING:

Read and understand all instructions.

Failure to follow all instructions listed below,
may result in electric shock, fire and/or seri­ous personal injury.

SAVE THESE INSTRUCTIONS

Work Area

1. Keep your work area clean and well lit. Cluttered

benches and dark areas invite accidents.

2. Do not operate power tools in explosive atmo-

spheres, such as in the presence of flammable
liquids, gases, or dust. Power tools create sparks

which may ignite the dust or fumes.

3. Keep bystanders, children, and visitors away

while operating a power tool. Distractions can

cause you to lose control.

Electrical Safety

4. Double insulated tools are equipped with a

polarized plug (one blade is wider than the
other.) This plug will fit in a polarized outlet only
one way. If the plug does not fit fully in the outlet,
reverse the plug. If it still does not fit, contact a
qualified electrician to install a polarized outlet.
Do not change the plug in any way. Double insula-

tion eliminates the need for the three wire
grounded power cord and grounded power supply
system.

5. Avoid body contact with grounded surfaces

such as pipes, radiators, ranges and refrigera­tors. There is an increased risk of electric shock if

your body is grounded.

6. Do not expose power tools to rain or wet condi­tions. Water entering a power tool will increase the

risk of electric shock.

7. Do not abuse the cord. Never use the cord to
carry the tools or pull the plug from an outlet.
Keep cord away from heat, oil, sharp edges or
moving parts. Replace damaged cords immedi­ately. Damaged cords increase the risk of electric

shock.

8. When operating a power tool outside, use an
outdoor extension cord marked “W-A” or “W”.

These cords are rated for outdoor use and reduce
the risk of electric shock.

Personal Safety

9. Stay alert, watch what you are doing and use
common sense when operating a power tool. Do
not use tool while tired or under the influence of
drugs, alcohol, or medication. A moment of inat-

tention while operating power tools may result in
serious personal injury.

10. Dress properly. Do not wear loose clothing or
jewelry. Contain long hair. Keep your hair, cloth­ing, and gloves away from moving parts. Loose

clothes, jewelry, or long hair can be caught in mov­ing parts.

11. Avoid accidental starting. Be sure switch is off
before plugging in. Carrying tools with your finger

on the switch or plugging in tools that have the
switch on invites accidents.

12. Remove adjusting keys or wrenches before turn­ing the tool on. A wrench or a key that is left

attached to a rotating part of the tool may result in
personal injury.

13. Do not overreach. Keep proper footing and bal­ance at all times. Proper footing and balance

enables better control of the tool in unexpected situ­ations.

14. Use safety equipment. Always wear eye protec­tion. Dust mask, non-skid safety shoes, hard hat, or

hearing protection must be used for appropriate con­ditions. Ordinary eye or sun glasses are NOT eye
protection.

2

Tool Use and Care

15. Use clamps or other practical way to secure and
support the workpiece to a stable platform. Hold-

ing the work by hand or against your body is unsta­ble and may lead to loss of control.

16. Do not force tool. Use the correct tool for your
application. The correct tool will do the job better

and safer at the rate for which it is designed.

17. Do not use tool if switch does not turn it on or
off. Any tool that cannot be controlled with the

switch is dangerous and must be repaired.

18. Disconnect the plug from the power source
before making any adjustments, changing
accessories, or storing the tool. Such preventive

safety measures reduce the risk of starting the tool
accidentally.

19. Store idle tools out of reach of children and
other untrained persons. Tools are dangerous in

the hands of untrained users.

20. Maintain tools with care. Keep cutting tools
sharp and clean. Properly maintained tools with

sharp cutting edges are less likely to bind and are
easier to control.

21. Check for misalignment or binding of moving
parts, breakage of parts, and any other condition
that may affect the tools operation. If damaged,

have the tool serviced before using. Many acci-

dents are caused by poorly maintained tools.

22. Use only accessories that are recommended by
the manufacturer for your model. Accessories

that may be suitable for one tool, may become haz­ardous when used on another tool.

SERVICE

23. Tool service must be performed only by qualified
repair personnel. Service or maintenance per-

formed by unqualified personnel could result in a risk
of injury.

24. When servicing a tool, use only identical
replacement parts. Follow instructions in the
Maintenance section of this manual. Use of unau-

thorized parts or failure to follow Maintenance
instructions may create a risk of electric shock or
injury.

USE PROPER EXTENSION CORD: Make sure your
extension cord is in good condition. When using an
extension cord, be sure to use one heavy enough to
carry the current your product will draw. An undersized
cord will cause a drop in line voltage resulting in loss of
power and overheating. Table 1 shows the correct size to
use depending on cord length and nameplate ampere
rating. If in doubt, use the next heavier gage. The smaller
the gage number, the heavier the cord.

Table 1: Minimum gage for cord

Ampere Rating

Volts Total length of cord in feet

120 V 25 ft. 50 ft. 100 ft. 150 ft.

More Than Not More Than AWG

0 6 18 16 16 14

18 16 14 12610
10 12 16 16 14 12
12 16 14 12

Not Recommended

SPECIFIC SAFETY RULES

USB052-2

DO NOT let comfort or familiarity with
product (gained from repeated use)
replace strict adherence to trimmer
safety rules. If you use this tool unsafely
or incorrectly, you can suffer serious per­sonal injury.

1. Hold tool by insulated gripping surfaces when
performing an operation where the cutting tool
may contact hidden wiring or its own cord. Con-

tact with a “live” wire will make exposed metal parts
of the tool “live” and shock the operator.

2. Wear hearing protection during extended period
of operation.

3. Handle the bits very carefully.

4. Check the bit carefully for cracks or damage
before operation. Replace cracked or damaged
bit immediately.

5. Avoid cutting nails. Inspect for and remove all
nails from the workpiece before operation.

6. Hold the tool firmly.

7. Keep hands away from rotating parts.

8. Make sure the bit is not contacting the work­piece before the switch is turned on.

9. Before using the tool on an actual workpiece, let
it run for a while. Watch for vibration or wobbling
that could indicate improperly installed bit.

10. Be careful of the bit rotating direction and the
feed direction.

11. Do not leave the tool running. Operate the tool
only when hand-held.

3

12. Always switch off and wait for the bit to come to
a complete stop before removing the tool from
workpiece.

13. Do not touch the bit immediately after operation;
it may be extremely hot and could burn your
skin.

14. Always lead the power supply cord away from
the tool towards the rear.

15. Do not smear the tool base carelessly with thin­ner, gasoline, oil or the like. They may cause
cracks in the tool base.

16. Draw attention to the need to use cutters of the
correct shank diameter and which are suitable
for the speed of the tool.

17. Some material contains chemicals which may be
toxic. Take caution to prevent dust inhalation
and skin contact. Follow material supplier safety
data.

SAVE THESE INSTRUCTIONS

WARNING:

MISUSE or failure to follow the safety
rules stated in this instruction manual
may cause serious personal injury.

SYMBOLS

USD201-2

The followings show the symbols used for tool.

V............................volts

A ...........................amperes

Hz..........................hertz

....................alternating current

.......................no load speed

.......................Class II Construction

.../min....................revolutions or reciprocation per

minute

Adjusting bit protrusion

1

2

To adjust the bit protrusion, loosen the lever and move
the tool base up or down as desired by turning the adjust­ing roller. After adjusting, tighten the lever firmly to
secure the tool base.

Adjusting angle of tool base

1

2

3

Loosen the wing bolts and adjust the angle of the tool
base (5° per graduation) to obtain the desired cutting
angle.

002001

1. Lever

2. Scale

3

4

5

4

3. Bit protrusion

4. Adjusting roller

002002

1. Wing bolt

2. Graduation

3. Trimmer shoe

4. Amount of

5. Base

chamfering

Adjusting amount of chamfering

To adjust the amount of chamfering, loosen the wing nuts
and adjust the trimmer shoe.

CAUTION:

• With the tool unplugged and switch in the “OFF”

position, rotate the collet nut on the tool several
times to be sure that the bit turns freely and does
not contact the base or trimmer shoe in any way.

Switch action

001982

1. Switch lever

FUNCTIONAL DESCRIPTION

CAUTION:

• Always be sure that the tool is switched off and

unplugged before adjusting or checking function on
the tool.

1

4

CAUTION:

• Before plugging in the tool, always be sure that the

tool is switched off.

• Switch can be locked in “ON” position for ease of

operator comfort during extended use. Apply cau­tion when locking tool in “ON” position and maintain
firm grasp on tool.

To start the tool, move the switch lever to the I (ON) posi­tion. To stop the tool, move the switch lever to the O
(OFF) position.

Electronic function

For model 3708FC only

The tool equipped with electronic function are easy to
operate because of the following features.

Constant speed control

Electronic speed control for obtaining constant speed.
Possible to get fine finish, because the rotating speed is
kept constant even under load condition.

Soft start

Soft-start feature minimizes start-up shock, and makes
the tool start smoothly.

Lighting up the lamps

For model 3708F/3708FC only

CAUTION:

• Do not look in the light or see the source of light

directly.

To turn on the lamp, start the tool. Then, the lamp lights
up the top of the bit. To turn it off, stop the tool.

NOTE:

• Use a dry cloth to wipe the dirt off the lens of lamp.

Be careful not to scratch the lens of lamp, or it may
lower the illumination.

CAUTION:

• Do not tighten the collet nut without inserting a bit,

or the collet cone will break.

• Use only the wrenches provided with the tool.

Insert the bit all the way into the collet cone and tighten
the collet nut securely with the two wrenches.

To remove the bit, follow the installation procedure in
reverse.

Installing trimmer shoe
(after it has been removed from the tool)

3

4

1

2

1. Bolt 2. Flat washer (large)

3. Trimmer shoe 4. Flat washer (small)

5. Spring washer 6. Wing nut

7. Base

NOTE:

• The trimmer shoe is factory installed on the tool.

Use the bolts, wing nuts, spring washers and flat wash­ers to install the trimmer shoe as shown in the figure.

002004

5

6

7

OPERATION

002005

1

1. Trimmer shoe

2. Base

ASSEMBLY

CAUTION:

• Always be sure that the tool is switched off and

unplugged before carrying out any work on the tool.

Installing or removing trimmer bit

2

1

3

002003

1. Loosen

2. Tighten

3. Hold

2

Turn the tool on without the bit making any contact with
the workpiece and wait until the bit attains full speed.
Then move the tool over the workpiece surface, keeping
the tool base and trimmer shoe flush with the sides of the
workpiece.

NOTE:

• This tool can be used as a conventional trimmer

when you remove the trimmer shoe.

When doing edge cutting, the workpiece surface should
be on the left side of the bit in the feed direction.

5

001984

2

1

2

4

4

3

1. Workpiece 2. Bit revolving direction

3. View from the top of the

4. Feed direction

tool

CAUTION:

• Since excessive cutting may cause overload of the

motor or difficulty in controlling the tool, the depth of
cut should not be more than 3 mm (1/8”) at a pass
when cutting grooves. When you wish to cut
grooves more than 3 mm (1/8”) deep, make several
passes with progressively deeper bit settings.

NOTE:

• Moving the tool forward too fast may cause a poor

quality of cut, or damage to the bit or motor. Moving
the tool forward too slowly may burn and mar the
cut. The proper feed rate will depend on the bit size,
the kind of workpiece and depth of cut. Before
beginning the cut on the actual workpiece, it is
advisable to make a sample cut on a piece of scrap
lumber. This will show exactly how the cut will look
as well as enable you to check dimensions.

• When using the trimmer shoe, the straight guide or

the trimmer guide, be sure to keep it on the right
side in the feed direction. This will help to keep it
flush with the side of the workpiece.

2

001985

1. Feed direction

3

2. Bit revolving
direction

3. Workpiece

1

4. Straight guide

Templet guide

001986

The templet guide provides a sleeve through which the
bit passes, allowing use of the trimmer with templet pat­terns.

Remove the tool base from the tool. Loosen the wing
bolts and secure the tool base horizontally. Loosen the
two screws on the tool base.

1

2

Place the templet guide on the tool base. There are four
convex portions on the templet guide. Secure two of the

002006

3

4

1. Base

2. Wing bolt

3. Screws

4. Screwdriver

four convex portions using the two screws. Install the tool
base on the tool.

002007

1. Templet guide

1

2. Convex portions

2

4

Secure the templet to the workpiece. Place the tool on
the templet and move the tool with the templet guide slid­ing along the side of the templet.

1

2

3

4

10mm(3/8”)

001988

6

5

1. Straight bit

2. Base

3. Templet

4. Distance (X)

5. Workpiece

6. Templet guide
10

6

NOTE:

• The workpiece will be cut a slightly different size

from the templet. Allow for the distance (X) between
the router bit and the outside of the templet guide.
The distance (X) can be calculated by using the fol­lowing equation:

Distance (X) = (outside diameter of the templet guide ­router bit diameter) / 2

Straight guide (Accessory)

The straight guide is effectively used for straight cuts
when chamfering or grooving.

Attach the guide plate to the straight guide with the bolt,
the wave washer, the flat washer and the wing nut.

1

2
3
4

5

001989

001990

1. Bolt

2. Guide plate

3. Straight guide

4. Flat washer

5. Wave washer

6. Wing nut

6

straight board to the workpiece and use it as a guide
against the trimmer base. Feed the tool in the direction of
the arrow.

002009

A

Circular work

Circular work may be accomplished if you assemble the
straight guide and guide plate as shown in the figures.

Min. and max. radius of circles to be cut (distance
between the center of circle and the center of bit) are as
follows:

Min.: 70 mm (2-3/4”)
Max.: 221 mm (8-11/16”)
For cutting circles between 70 mm (2-3/4”) and 121 mm

(4-3/4”) in radius.

1

6

7

001993

2

3

4

5

1. Wing nut

2. Wave washer

3. Flat washer

4. Guide plate

5. Straight guide

6. Center hole

7. Bolt

Loosen the wing bolts and secure the tool base horizon­tally. Attach the straight guide with the clamp screw (A).
Loosen the wing nut on the straight guide and adjust the
distance between the bit and the straight guide. At the
desired distance, tighten the wing nut securely.

1

2

002008

3

1. Clamp screw
(A)

2. Straight guide

3. Wing bolt

4. Base

5. Wing nut

5

When cutting, move the tool with the straight guide flush
with the side of the workpiece.

If the distance (A) between the side of the workpiece and
the cutting position is too wide for the straight guide, or if

4

the side of the workpiece is not straight, the straight
guide cannot be used. In this case, firmly clamp a

For cutting circles between 121 mm (4-3/4”) and 221 mm
(8-11/16”) in radius.

1

001994

2

3

1. Wing nut

2. Wave washer

3. Flat washer

4. Guide plate

6

7

4
5

5. Straight guide

6. Center hole

7. Bolt

NOTE:

• Circles between 172 mm (6-3/4”) and 186 mm (7-5/

16”) in radius cannot be cut using this guide.

Align the center hole in the straight guide with the center
of the circle to be cut. Drive a nail less than 6 mm (1/4”)
in diameter into the center hole to secure the straight
guide. Pivot the tool around the nail in clockwise direc­tion.

7

002010

1. Nail

2

2. Center hole

3. Straight guide

1

3

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and

unplugged before attempting to perform inspection
or maintenance.

Replacing carbon brushes

001145

1. Limit mark

Trimmer guide

Trimming, curved cuts in veneers for furniture and the like
can be done easily with the trimmer guide. The guide
roller rides the curve and assures a fine cut.

Loosen the wing bolts and secure the tool base horizon­tally.

Install the trimmer guide on the tool base with the clamp
screw (A). Loosen the clamp screw (B) and adjust the
distance between the bit and the trimmer guide by turn­ing the adjusting screw (1 mm (3/64”) per turn). At the
desired distance, tighten the clamp screw (B) to secure
the trimmer guide in place.

1
2

3

4

When cutting, move the tool with the guide roller riding
the side of the workpiece.

002011

002012

1. Clamp screw
(A)

2. Adjusting screw

3. Clamp screw
(B)

4. Trimmer guide

5

2

5. Wing bolt

001998

1. Workpiece

2. Bit

3. Guide roller

3

1

1

Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark. Keep
the carbon brushes clean and free to slip in the holders.
Both carbon brushes should be replaced at the same
time. Use only identical carbon brushes.

Use a screwdriver to remove the brush holder caps. Take
out the worn carbon brushes, insert the new ones and
secure the brush holder caps.

1

001999

1. Screwdriver

2. Brush holder
cap

2

To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be per­formed by Makita Authorized or Factory Service Centers,
always using Makita replacement parts.

ACCESSORIES

CAUTION:

• These accessories or attachments are recom-

mended for use with your Makita tool specified in
this manual. The use of any other accessories or
attachments might present a risk of injury to per­sons. Only use accessory or attachment for its
stated purpose.

If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.

• Straight & groove forming bits

• Edge forming bits

• Laminate trimming bits

8

• Straight guide assembly

• Trimmer guide assembly

• Trimmer base assembly (For chamfering with

straight bit)

• Trimmer shoe

• Templet guide

• Collet cone 1/4”

• Wrench 10

• Wrench 17

EN0006-1

MAKITA LIMITED ONE YEAR WARRANTY

Warranty Policy

Every Makita tool is thoroughly inspected and tested
before leaving the factory. It is warranted to be free of
defects from workmanship and materials for the period of
ONE YEAR from the date of original purchase. Should
any trouble develop during this one year period, return
the COMPLETE tool, freight prepaid, to one of Makita’s
Factory or Authorized Service Centers. If inspection
shows the trouble is caused by defective workmanship or
material, Makita will repair (or at our option, replace)
without charge.

This Warranty does not apply where:

• repairs have been made or attempted by others:

• repairs are required because of normal wear and

tear:

• the tool has been abused, misused or improperly

maintained:

• alterations have been made to the tool.

IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY
INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAM­AGES FROM THE SALE OR USE OF THE PRODUCT.
THIS DISCLAIMER APPLIES BOTH DURING AND
AFTER THE TERM OF THIS WARRANTY.

MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED
WARRANTIES, INCLUDING IMPLIED WARRANTIES
OF “MERCHANTABILITY” AND “FITNESS FOR A SPE­CIFIC PURPOSE,” AFTER THE ONE YEAR TERM OF
THIS WARRANTY.

This Warranty gives you specific legal rights, and you
may also have other rights which vary from state to state.
Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above limi­tation or exclusion may not apply to you. Some states do
not allow limitation on how long an implied warranty lasts,
so the above limitation may not apply to you.

9