Makita KP312 User manual

1
ENGLISH (Original instructions)
INSTRUCTION MANUAL
DOUBLE INSULATION
IMPORTANT: Read Before Using.
Planer
KP312
KP312S
003868

2
ENGLISH (Original instructions)
SPECIFICATIONS
Model KP312 KP312S
Planing width 312 mm
Planing depth 0 - 3.5 mm
No load speed (min-1) 12,000
Overall length 551 mm
Net weight 18.4 kg
Safety class /II
• Due to our continuing programme of research and development, the specifications herein are subject to change without notice.
• Specifications may differ from country to country.
• Weight according to EPTA-Procedure 01/2003
END201-5
Symbols
The following show the symbols used for the equipment.
Be sure that you understand their meaning before use.
･Read instruction manual.
･DOUBLE INSULATION
･Only for EU countries
Do not dispose of electric equipment
together with household waste material!
In observance of European Directive
2002/96/EC on waste electric and
electronic equipment and its
implementation in accordance with
national law, electric equipment that
have reached the end of their life must
be collected separately and returned to
an environmentally compatible recycling
facility.
ENE001-1
Intended use
The tool is intended for planing wood.
ENF002-2
Power supply
The tool should be connected only to a power supply of
the same voltage as indicated on the nameplate, and can
only be operated on single-phase AC supply. They are
double-insulated and can, therefore, also be used from
sockets without earth wire.
ENG102-2
For European countries only
Noise
The typical A-weighted noise level determined according
to EN60745:
Sound pressure level (LpA) : 92 dB(A)
Sound power level (LWA) : 103 dB(A)
Uncertainty (K) : 3 dB(A)
Wear ear protection
ENG222-2
Vibration
The vibration total value (tri-axial vector sum) determined
according to EN60745:
Work mode : planing softwood
Vibration emission (ah) : 2.5 m/s2
Uncertainty (K) : 1.5 m/s2
ENG901-1
• The declared vibration emission value has been
measured in accordance with the standard test
method and may be used for comparing one tool
with another.
• The declared vibration emission value may also be
used in a preliminary assessment of exposure.
WARNING:
• The vibration emission during actual use of the
power tool can differ from the declared emission
value depending on the ways in which the tool is
used.
• Be sure to identify safety measures to protect the
operator that are based on an estimation of
exposure in the actual conditions of use (taking
account of all parts of the operating cycle such as
the times when the tool is switched off and when it
is running idle in addition to the trigger time).
ENH101-15
For European countries only
EC Declaration of Conformity
We Makita Corporation as the responsible
manufacturer declare that the following Makita
machine(s):
Designation of Machine:
Planer
Model No./ Type: KP312,KP312S
are of series production and
Conforms to the following European Directives:
2006/42/EC

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And are manufactured in accordance with the following
standards or standardised documents:
EN60745
The technical documentation is kept by our authorised
representative in Europe who is:
Makita International Europe Ltd.
Michigan Drive, Tongwell,
Milton Keynes, Bucks MK15 8JD, England
30.1.2009
000230
Tomoyasu Kato
Director
Makita Corporation
3-11-8, Sumiyoshi-cho,
Anjo, Aichi, 446-8502, JAPAN
GEA005-3
General Power Tool Safety
Warnings
WARNING Read all safety warnings and all
instructions. Failure to follow the warnings and
instructions may result in electric shock, fire and/or
serious injury.
Save all warnings and
instructions for future reference.
The term "power tool" in the warnings refers to your
mains-operated (corded) power tool or battery-operated
(cordless) power tool.
Work area safety
1. Keep work area clean and well lit. Cluttered or
dark areas invite accidents.
2. Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust. Power tools
create sparks which may ignite the dust or fumes.
3. Keep children and bystanders away while
operating a power tool. Distractions can cause
you to lose control.
Electrical safety
4. Power tool plugs must match the outlet. Never
modify the plug in any way. Do not use any
adapter plugs with earthed (grounded) power
tools. Unmodified plugs and matching outlets will
reduce risk of electric shock.
5. Avoid body contact with earthed or grounded
surfaces such as pipes, radiators, ranges and
refrigerators. There is an increased risk of
electric shock if your body is earthed or 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 for
carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges or
moving parts. Damaged or entangled cords
increase the risk of electric shock.
8. When operating a power tool outdoors, use an
extension cord suitable for outdoor use. Use of
a cord suitable for outdoor use reduces the risk of
electric shock.
9. If operating a power tool in a damp location is
unavoidable, use a residual current device
(RCD) protected supply. Use of an RCD reduces
the risk of electric shock.
10. Use of power supply via a RCD with a rated
residual current of 30mA or less is always
recommended.
Personal safety
11. Stay alert, watch what you are doing and use
common sense when operating a power tool.
Do not use a power tool while you are tired or
under the influence of drugs, alcohol or
medication. A moment of inattention while
operating power tools may result in serious
personal injury.
12. Use personal protective equipment. Always
wear eye protection. Protective equipment such
as dust mask, non-skid safety shoes, hard hat, or
hearing protection used for appropriate conditions
will reduce personal injuries.
13. Prevent unintentional starting. Ensure the
switch is in the off-position before connecting
to power source and/or battery pack, picking
up or carrying the tool. Carrying power tools with
your finger on the switch or energising power tools
that have the switch on invites accidents.
14. Remove any adjusting key or wrench before
turning the power tool on. A wrench or a key left
attached to a rotating part of the power tool may
result in personal injury.
15. Do not overreach. Keep proper footing and
balance at all times. This enables better control
of the power tool in unexpected situations.
16. Dress properly. Do not wear loose clothing or
jewellery. Keep your hair, clothing, and gloves
away from moving parts. Loose clothes,
jewellery or long hair can be caught in moving
parts.
17. If devices are provided for the connection of
dust extraction and collection facilities,
ensure these are connected and properly used.
Use of dust collection can reduce dust-related
hazards.

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Power tool use and care
18. Do not force the power tool. Use the correct
power tool for your application. The correct
power tool will do the job better and safer at the
rate for which it was designed.
19. Do not use the power tool if the switch does
not turn it on and off. Any power tool that cannot
be controlled with the switch is dangerous and
must be repaired.
20. Disconnect the plug from the power source
and/or the battery pack from the power tool
before making any adjustments, changing
accessories, or storing power tools. Such
preventive safety measures reduce the risk of
starting the power tool accidentally.
21. Store idle power tools out of the reach of
children and do not allow persons unfamiliar
with the power tool or these instructions to
operate the power tool. Power tools are
dangerous in the hands of untrained users.
22. Maintain power tools. Check for misalignment
or binding of moving parts, breakage of parts
and any other condition that may affect the
power tool’s operation. If damaged, have the
power tool repaired before use. Many accidents
are caused by poorly maintained power tools.
23. Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
24. Use the power tool, accessories and tool bits
etc. in accordance with these instructions,
taking into account the working conditions
and the work to be performed. Use of the power
tool for operations different from those intended
could result in a hazardous situation.
Service
25. Have your power tool serviced by a qualified
repair person using only identical replacement
parts. This will ensure that the safety of the power
tool is maintained.
26. Follow instruction for lubricating and
changing accessories.
27. Keep handles dry, clean and free from oil and
grease.
GEB010-4
PLANER SAFETY WARNINGS
1. Wait for the cutter to stop before setting the
tool down. An exposed cutter may engage the
surface leading to possible loss of control and
serious injury.
2. Hold the power tool by insulated gripping
surfaces only, because the cutter may contact
its own cord. Cutting a "live" wire may make
exposed metal parts of the power tool "live" and
could give the operator an electric shock.
3. Use clamps or another practical way to secure
and support the workpiece to a stable platform.
Holding the work by hand or against your body
leaves it unstable and may lead to loss of control.
4. Rags, cloth, cord, string and the like should
never be left around the work area.
5. Avoid cutting nails. Inspect for and remove all
nails from the workpiece before operation.
6. Use only sharp blades. Handle the blades very
carefully.
7. Be sure the blade installation bolts are
securely tightened before operation.
8. Hold the tool firmly with both hands.
9. Keep hands away from rotating parts.
10. Before using the tool on an actual workpiece,
let it run for a while. Watch for vibration or
wobbling that could indicate poor installation
or a poorly balanced blade.
11. Make sure the blade is not contacting the
workpiece before the switch is turned on.
12. Wait until the blade attains full speed before
cutting.
13. Always switch off and wait for the blades to
come to a complete stop before any adjusting.
14. Never stick your finger into the chip chute.
Chute may jam when cutting damp wood.
Clean out chips with a stick.
15. Do not leave the tool running. Operate the tool
only when hand-held.
16. Always change both blades or covers on the
drum, otherwise the resulting imbalance will
cause vibration and shorten tool life.
17. Use only Makita blades specified in this
manual.
18. Always use the correct dust mask/respirator
for the material and application you are
working with.
SAVE THESE INSTRUCTIONS.
WARNING:
DO NOT let comfort or familiarity with product
(gained from repeated use) replace strict adherence
to safety rules for the subject product.
MISUSE or failure to follow the safety rules stated in
this instruction manual may cause serious personal
injury.

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FUNCTIONAL DESCRIPTION
CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on
the tool.
Adjusting depth of cut
1
2
003869
The depth of cut can be adjusted within a range of 0 - 3.5
mm. Turn the knob on the front of the tool until the pointer
is aligned with the desired cutting depth on the scale. Set
the depth of a cut observing the maximum depth which is
limited by width according to the following table.
Width of cut Maximum depth of cut
0 - 150 mm 3.5 mm
150 - 240 mm 2 mm
240 - 312 mm 1.5 mm
Corelation of width of cut and maximun depth of cut
006588
Switch action
1
2
3
003872
CAUTION:
• Before plugging in the tool, always check to see
that the switch trigger actuates properly and returns
to the "OFF" position when released.
For tool with lock button
To start the tool, simply pull the trigger. Release the
trigger to stop. For continous operation, pull the trigger
and then push in the lock button. To stop the tool from the
locked position, pill the trigger fully, then release it.
For tool with lock-off button
To prevent the trigger from being accidentally pulled, a
lock-off button is provided. To start the tool, press the
lock-off button and pull the trigger. Release the trigger to
stop.
Overload protecter (Option)
This tool is equipped with an overload protector which
automatically cuts out to break the circuit whenever
heavy work is prolonged. When it cuts out, inspect the
blade for damage or something wrong. After making sure
that there is nothing wrong with the tool, push the restart
button to resume operation.
Edge fence (Guide rule)
1
2
003873
Edge fence is useful for minimizing a short run of cut by
cutting in a uniform width. The edge fence (guide rule ) is
provided on the side of the tool. Press two pins for the
edge fence (guide rule) so that the edge fence appears.
Move the tool forward while keeping the flat surface of
the edge fence in contact with the side of the workpiece.
To return the edge fence to an original position, push it
upwards from its underside.
Foot
1
23
003874
After a cutting operation, raise the back side of the tool
and a foot comes under the level of the rear base. This
prevents the tool blades to be damaged.
Guideline of cutting blade passage
1
003875
1. Front base
1. Rear base
2. Foot
3. Planer blade
1. Pins
2. Edge fence
(Guide rule)
1. Switch trigger
2. Lock button /
Lock-off button
3. Restart button
1. Knob
2. Scale plate

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Both ends of the front base are a guideline to show the
ends of cutting blades passage.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Removing or installing planer blades
1
2
003877
CAUTION:
• Tighten the blade installation bolts carefully when
attaching the blades to the tool. A loose installation
bolt can be dangerous. Always check to see they
are tightened securely.
• Handle the blades very carefully. Use gloves or
rags to protect your fingers or hands when
removing or installing the blades.
• Use only the Makita wrench provided to remove or
install the blades. Failure to do so may result in
overtightening or insufficient tightening of the
installation bolts. This could cause an injury.
To remove planer blades on the drum, loosen the eight
installation bolts by only one full turn with the hex wrench.
Then push and slide a planer blade sideways from the
belt side using the helm of the hex wrench.
To remove another planer blade, follow the same
procedure as above.
1
003889
1
3
2
4
5
6
7
003890
To install the blades, first clean out all chips or foreign
matter adhering to the drum or blades.
Insert the blade between the drum and the set plate
from the nozzle extraction side so that the blade will be
centered from both ends of the drum or set plate.
First tighten the eight installation bolts lightly and evenly
shifting from the center bolts to the outward bolts with the
hex wrench.
And then, tighten all of the installation bolts securely.
Install another blade in the same manner as above.
003880
1. Drum plate
2. Installation bolt
3. Set plate screw
4. Set plate
5. Planer blade
6. Adjusting screw
7. Drum
1. Hex wrench
1. Hex wrench
2. Installation bolt

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For the correct planer blade setting
Your planing surface will end up rough and uneven,
unless the blade is set properly and securely. The blade
must be mounted so that the cutting edge is absolutely
level, that is, parallel to the surface of the rear base.
Below are some examples of proper and improper
settings.
(A) (B)
(B)
(A) (B)
(A)
(A) Front base (Movable shoe)
(B) Rear base (Stationary shoe)
Correct setting
Nicks in surface
Gouging at start
Gouging at end
Although this side view cannot
show it, the edges of the blades
run perfectly parallel to the rear
base surface.
Cause: One or both blades fails to
have edge parallel to rear
base line.
Cause: One or both blade edges
fails to protrude enough in
relation to rear base line.
Cause: One or both blade edges
protrudes too far in relation
to rear base line.
EN0004-1
Blade height adjustment
1
3
2
4
5
6
7
003890
Blade height adjustment is usually not necessary.
However, if you notice that the blade edge is below the
level of the rear base or protrudes too far from the rear
base, proceed as follows.
Loosen the eight installation bolts and the set plate
screws. Turn the adjusting screws clockwise to retract
the blade or counterclockwise to protrude it. After
adjusting the blade height, tighten the set plate screws
and the eight installation bolts securely.
Hex wrench storage
1
2
3
003883
When not in use, store the hex wrench as shown in the
figure to keep it from being lost.
1. Hex wrench
2. Wrench holder
3. Rear base
1. Drum plate
2. Installation bolt
3. Set plate screw
4. Set plate
5. Planer blade
6. Adjusting screw
7. Drum

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Nozzle assembly and joint (Accessory)
1
003884
Nozzle assembly and joint are used when connecting the
tool to vacuum cleaner.
When you wish to perform cleaner operation, connect a
vacuum cleaner to your tool.
To connect vacuum cleaner, remove the chip guide from
the tool. Place nozzle assembly and joint in its place and
then tighten screws to secure them.
Connect a hose of vacuum cleaner to the joint.
1
2
003885
OPERATION
Planing operation
12
003886
First, rest the tool front base flat upon the workpiece
surface without the blades making any contact. Switch
on and wait until the blades attain full speed. Then move
the tool gently forward. Apply pressure on the front of tool
at the start of planing, and at the back at the end of
planing.
The speed and depth of cut determine the kind of finish.
The power planer keeps cutting at a speed that will not
result in jamming by chips. For rough cutting, the depth of
cut can be increased, while for a good finish you should
reduce the depth of cut and advance the tool more
slowly.
Front roller
1
003887
When performing repeated cuts, the use of the front roller
enables quick and effortless return of the tool toward an
operator by raising the back end of the tool so that the
tool blades do not contact a workpiece and then sliding
tool on the front roller.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection
or maintenance.
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may
result.
Replacing carbon brushes
1
001145
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. Limit mark
1. Front roller
1. At the start of
planing
2. At the end of
planing
1. Joint
2. Nozzle
assembly
1. Chip guide

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1
2
003888
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be
performed by Makita Authorized Service Centers, always
using Makita replacement parts.
OPTIONAL ACCESSORIES
CAUTION:
• These accessories or attachments are
recommended 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.
• Planer blade
• Triangular rule
• Nozzle assembly
• Joint
• Hex wrench
NOTE:
• Some items in the list may be included in the tool
package as standard accessories. They may differ
from country to country.
1. Screwdriver
2. Brush holder
cap

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Makita Corporation
Anjo, Aichi, Japan
www.makita.com
884478F229