Makita SK312GD User manual

ENGLISH: Original instructions
INSTRUCTION MANUAL
Rechargeable Green Multi Line
Laser
SK312GD
SK209GD
Read before use.

2 ENGLISH
CONTENTS
SPECIFICATIONS ----------------------------------------------------- 3
Symbols --------------------------------------------------------------------- 4
Intended use---------------------------------------------------------------- 4
Laser Beam Related Safety Standards------------------------------ 4
Safety Declaration -------------------------------------------------------- 5
Noise Related Safety Standards -------------------------------------- 6
Safety Warnings ----------------------------------------------------------- 7
NAMES OF PARTS-------------------------------------------------- 13
Optional Accessories--------------------------------------------------- 13
Installing or removing battery cartridge---------------------------- 14
Battery Protection System -------------------------------------------- 15
Using the USB adapter (optional accessory) -------------------- 16
Using the Multi Line Laser -------------------------------------------- 17
Installing the Multi Line Laser------------------------------------- 17
Operating the power switch --------------------------------------- 18
Brightness selection------------------------------------------------- 18
Line beam mode selection ---------------------------------------- 19
CHECKING THE ACCURACY------------------------------------ 21
Checking the horizontal line--------------------------------------- 21
Checking the plumbing point and vertical line ---------------- 22
Checking the 180°vertical line ------------------------------------ 23
Checking the 90°vertical line-------------------------------------- 24
MAINTENANCE ------------------------------------------------------ 26

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SPECIFICATIONS
SK312GD SK209GD
Laser source Line beam: Green semiconductor laser
Lower dot beam: Red semiconductor laser
Laser wavelength 510 to 530 nm (lower dot beam 650 to 660 nm)
Laser output Each 1 mW or less (CLASS 2 LASER PRODUCT)
IEC 60825-1:2014
Laser line emission angle Vertical 130°±10%
180° vertical line 240°±20%
Horizontal 110°±10%
Vertical 130°±10%
Horizontal 110°±10%
Laser dot diameter 1.5 mm / 1 m (lower dot beam)
Laser beam selection Horizontal line /
Horizontal/vertical line /
3-vertical line/horizontal line
Horizontal line /
2-vertical line /
2-vertical line/horizontal line
Brightness selection 3 modes (constant pulse) Eco mode/ Normal mode / Bright mode
Indication method Automatic vertical line indication by gimbal mechanism
Vertical line indication range ±2° (alarm given by light off outside range)
Horizontal
ne-adjustment range
Entire circumference
Control method Magnet damper method
Accuracy Emitted laser ±1 mm / 10 m *(Before shipment from factory)
2-vertical line 90°±0.01°
Power supply Makita battery cartridge / USB adapter
Rated Voltage D.C.10.8V - 12Vmax, D.C. in 5V
Operating time
(when BL1015 or BL1016
is used)
At 3-vertical line/horizontal line
Bright mode: Approx. 10 h
Normal mode: Approx. 16 h
Eco mode: Approx. 21 h
At 2-vertical line/horizontal line
Bright mode: Approx. 15 h
Normal mode: Approx. 23 h
Eco mode: Approx. 28 h
Operating temperature range -10°C to +40°C (14°F to 104°F)
ESD protective measures Level: 4 (IEC61000-4-2)
Dimensions 87 mm (dia.) x 230 mm (height) (excluding protrusions)
Battery cartridge BL1015, BL1016, BL1020B, BL1021B, BL1040B, BL1041B
Net weight 1.5 kg - 1.6 kg
Tripod screw W 5/8"
NOTE: Use the product in the following operating environment.
•Indoor use
•Altitude:up to 2000m
•Humidity:Maximum relative humidity 80% temperature rise to 31°C (87.8°F) decreasing linearly to
50% relative humidity at 40°C (104°F)
•Pollution degree 3
* Due to our continuing program of research and development, the specications herein are subject to
change without notice.
* Specication values vary according to operating environment conditions and other factors.
* Specications and battery cartridge may differ from country to country.

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* The weight may differ depending on the battery cartridge. The lightest and heaviest combination,
according to EPTA-Procedure 01/2014, are shown in the table.
NOTE: When used at 0°C or lower temperatures, the laser lines are weak just after turning the
power on. Turn the laser ON and wait for it to stabilize.
Symbols
The denitions below describe the level of severity for each signal word and the meaning of each
symbol used in this manual.
Please read the manual and pay attention to these symbols.
: Read instruction manual.
DANGER
: This indicates the risk of death
or frequent serious injury.
WARNING
: This indicates the risk of
serious injury.
CAUTION
: This indicates the risk of
light injury.
NOTICE
NOTE
: This indicates the risk of
malfunction or damage to property.
: This indicates the risk of
electric shock.
: This indicates the risk of re.
: Laser warning
: Only for EU countries
Do not dispose of electric equipment or
battery pack together with household waste
material! In observance of the European
Directives, on Waste Electric and Electronic
Equipment and Batteries and Accumulators
and Waste Batteries and Accumulators and
their implementation in accordance with
national laws, electric equipment and batteries
and battery pack(s) that have reached the end
of their life must be collected separately and
returned to an environmentally compatible
recycling facility.
Intended use
The measuring tool is intended for levelling jobs with the use of horizontal lines, vertical lines and the
plumb point.
Laser Beam Related Safety Standards
This product complies with the following standards:
•IEC 60825-1:2014
LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
MAXIMUM OUTPUT POWER: P=1 mW
Wavelength: λ=510 ~ 530nm / 650 ~ 660nm
Pulse: 150 to 600ns / 1.5 to 1.7 MHz is controlled at 60 to 160μs/ 5 kHz
(λ=510 ~ 530 nm)

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CAUTION
Use of controls or adjustments or performance of procedures other than
those specied herein may result in hazardous radiation exposure.
Safety Declaration
This product complies with the following standards:
•EN61326-1: Electrical equipment for measurement, control and laboratory use – EMC
requirements
•IEC61010-1:2010 (3rd Edition) Safety requirements for electrical equipment for
measurement, control, and laboratory use
The usage conditions of this product for compliance with this standard are as follows.
CAUTION - When installing the BL1040B/BL1041B battery
cartridge (This caution is an explanation for labels used
on this product.)
Before installing the battery on this product and placing on a oor or table,
lower the handle and check the product does not fall over.
•FCC Part15 Subpart B: Federal Communications Commission (FCC), Equipment
authorization of unintentional radiators
•ICES003: Canada ICE regulations

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Noise Related Safety Standards
•FCC Part15 SubpartB/ICES 003
CAUTION
Changes or modications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
NOTE:
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful
interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular
installation.
If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the
following measures:
— Reorient or relocate the receiving antenna.
— Increase the separation between the equipment and receiver.
— Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
— Consult the dealer or an experienced radio/TV technician for help.
If the equipment is used in a manner not specied by the manufacturer, the
protection provided by the equipment may be impaired.

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Safety Warnings
WARNING
Read all safety warnings, instructions, illustrations and specications
provided with the product. Failure to follow all instructions listed below may result
in electric shock, re and/or serious injury.
Save all warnings and instructions for future reference.
WARNING - Laser safety
■ Do not look directly into the laser beam on optical instruments.
■ Directly looking at the laser beam by telescopic optics, magnifying glass or
similar instruments is dangerous.
■ Do not stare directly at the laser beam.
■ Avoid locating the path of the laser beam at eye height.
■ Do not enter the path of the laser beam.
■ Do not place reective objects in the path of the laser beam.
■ Do not point the laser beam at other persons.
•Continuously looking at laser beams may damage your eyes. If your eyes might be
impaired, immediately seek treatment by a physician.
WARNING - Work area safety
1. Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
2. Do not operate the product in explosive atmospheres, such as in the
presence of ammable liquids, gases or dust.
Products create sparks which may ignite the dust or fumes.
3. Keep children and bystanders away while operating the product.
Distractions can cause you to lose control.
WARNING - Electrical safety
1. 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.
2. Do not expose the product to rain or wet conditions.
Water entering the product will increase the risk of electric shock.

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3. Do not short-circuit terminals on the product.
Do not allow pins or wire to get inside the USB terminal. This may cause a
short-circuit, which may result in the risk of smoke emission or ignition.
4. Do not hold the power supply cable by your mouth.
Doing so might cause an electric shock.
WARNING - Storage
Properly store the charging tool when it is not in use. Store it in a safe
location out of the reach of children and in a dry location under lock and key.
WARNING - Battery product use and care
1. Recharge only with the charger specied by the manufacturer. A
charger that is suitable for one type of battery pack may create a risk of
re when used with another battery pack.
2. Use the product only with specically designated battery packs. Use
of any other battery packs may create a risk of injury and re.
3. When battery pack is not in use, keep it away from other metal
objects, like paper clips, coins, keys, nails, screws or other small
metal objects, that can make a connection from one terminal to
another. Shorting the battery terminals together may cause burns or a re.
4. Under abusive conditions, liquid may be ejected from the battery;
avoid contact. If contact accidentally occurs, ush with water. If
liquid contacts eyes, additionally seek medical help. Liquid ejected
from the battery may cause irritation or burns.
5. Do not use a battery pack or product that is damaged or modied.
Damaged or modied batteries may exhibit unpredictable behaviour
resulting in re, explosion or risk of injury.
6. Do not expose a battery pack or product to re or excessive
temperature. Exposure to re or temperature above 130 °C may cause
explosion.
7. Follow all charging instructions and do not charge the battery
pack or product outside the temperature range specied in the
instructions.
Charging improperly or at temperatures outside the specied range may
damage the battery and increase the risk of re.
8. Use Makita battery cartridge only with products specied by Makita.

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WARNING - Maintenance
1. Have the product serviced by a qualied repair person using only
identical replacement parts. This will ensure that the safety of the
product is maintained.
2. Never service damaged battery packs. Service of battery packs should
only be performed by the manufacturer or authorized service providers.
3. Follow instruction for changing accessories.
4. Do not disassemble, repair, modify or retrot this product, charger or
battery. Doing so might cause ignition or abnormal operation, which may
result in injury.
5. Inspect this product for damaged parts. If this product is operating
abnormally or malfunctioning, immediately stop use. Continued use of this
product in this condition might lead to smoke emission, ignition, electric
shock, or injury.
<Examples of Abnormalities and Malfunction>
x Power cable and power plug are abnormally hot.
x The power cable has deep scratches or is deformed.
x Power turns ON and OFF when the power cable is moved.
x There is a burning smell.
x There is a tingling feeling of electricity.
If you sense a malfunction, such as this product not functioning even after
turning the power switch ON, immediately remove the battery and ask the
store of purchase or a Makita authorized service center for inspection and
repair.
6. This product complies with relevant safety standard. Do not modify or
retrot it.
7. If repair is performed by a person without specialist knowledge and
repair skills, not only will the performance of this product not be fully
demonstrated but this might also result in accident or injury.
WARNING - Additional safety
Use the correct accessories. Use only accessories recommended in this
User's Manual and in Makita catalogs. Do not use other accessories since this
might result in malfunction, accident or injury.

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PRECAUTIONS
1. Check the accuracy of the product each time before starting your work.
For details, see "CHECKING THE ACCURACY".
2. Avoid heavy shake or impact on the product.
The product is designed in an impact-resistant structure. However
excessive impact may cause degradation in performance. After heavy
impact, an accuracy check should be carried out.
3. Before moving this product, lock this product by turning the power OFF.
After work is nished, turn the power switch OFF. Then the product is
locked internally.
4. If there is an apparent abnormality, do not use this product.
Immediately stop work, and contact the store of purchase or the nearest
Makita sales ofce.
5. If the laser is not emitted after turning the power ON, lightly shake this
product a few times.
If the laser is not emitted even after shaking this product lightly a few
times, immediately stop work, and contact the store of purchase or the
nearest Makita sales ofce.
6. When the power is turned ON, the product emits the laser beam in the
same mode that was turned OFF last time. Operate the switch with
keeping the laser beam away from your eyes.
7. In dark area, reections may be seen besides the regular laser lines.
8. Do not use the product if condensation is found on it.
Do not turn the power ON. Leave the product until condensation naturally
disappears.
9. Do not use the laser receiver near the point the laser lines cross each
other. The laser receiver does not detect near such a point.
10.When transporting this product, put it in its case.
11. When storing, put the product in its case. The storage area should be
away from heat, moisture, vibration and dust.
12.Clean the glass at exit opening of the laser beam using soft cloth to keep
performance.
13.When the product is dirty, wipe it clean with a soft, dry cloth. If the dirt is
stubborn, use a cloth moistened with water and wrung rmly. Then, wipe
off any water again with a soft, dry cloth. Do not use alcohol, benzene,
pain thinner, or other volatile solvents. (Doing so might cause discoloring,
deformation, alteration or other abnormalities.)
14.Do not wash the product. It may cause malfunction.

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15.Never modify or retrot this product. Disassembly, modication or
retrotting this product may cause malfunction or an electric shock.
16.When this product is not used for a long time, remove the battery.
17.With regards to safety education, the user must fully understand the nature
and danger of laser beams.
18.The product is not intended for use by persons including children with
reduced physical, sensory or mental capabilities, or lack of experience and
knowledge. Young children should be supervised to ensure that they do
not play with the product.
Important safety instructions for battery cartridge
1. Before using battery cartridge, read all instructions and cautionary
markings on (1) battery charger, (2) battery, and (3) product using battery.
2. Do not disassemble battery cartridge.
3. If operating time has become excessively shorter, stop operating
immediately. It may result in a risk of overheating, possible burns and even
an explosion.
4. If electrolyte gets into your eyes, rinse them out with clear water and seek
medical attention right away. It may result in loss of your eyesight.
5. Do not short the battery cartridge:
(1) Do not touch the terminals with any conductive material.
(2) Avoid storing battery cartridge in a container with other metal objects
such as nails, coins, etc.
(3) Do not expose battery cartridge to water or rain.
A battery short can cause a large current ow, overheating, possible
burns and even a breakdown.
6. Do not store the tool and battery cartridge in locations where the
temperature may reach or exceed 50 °C (122 °F).
7. Do not incinerate the battery cartridge even if it is severely damaged or is
completely worn out. The battery cartridge can explode in a re.
8. Be careful not to drop or strike battery.

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9. Do not use a damaged battery.
10.The contained lithium-ion batteries are subject to the Dangerous Goods
Legislation requirements.
For commercial transports e.g. by third parties, forwarding agents, special
requirement on packaging and labeling must be observed.
For preparation of the item being shipped, consulting an expert for hazardous
material is required.
Please also observe possibly more detailed national regulations.
Tape or mask off open contacts and pack up the battery in such a manner that it
cannot move around in the packaging.
11. Follow your local regulations relating to disposal of battery.
SAVE THESE INSTRUCTIONS.
CAUTION
Only use genuine Makita batteries.
Use of non-genuine Makita batteries, or batteries that have been altered,
may result in the battery bursting causing res, personal injury and damage.
It will also void the Makita warranty for the Makita tool and charger.
Tips for maintaining maximum battery life
1. Charge the battery cartridge before completely discharged. Always stop tool
operation and charge the battery cartridge when you notice less tool power.
2. Never recharge a fully charged battery cartridge.
Overcharging shortens the battery service life.
3. Charge the battery cartridge with room temperature at 10 °C - 40 °C (50 °F -
104 °F). Let a hot battery cartridge cool down before charging it.

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NAMES OF PARTS
1. Operation panel
2. Vertical laser beam exit window
• SK312GD: 3 parts
• SK209GD: 2 parts
3. Horizontal laser beam exit window
4. Circular level
5. Rotation ne adjustment knob
6. Adjustment screw leg
7. Rubber foot cap
8. Lower laser beam exit port (base)
9. External tripod mounting screw hole (base)
10. DC jack cover
11. Power switch
12. Battery (optional accessory)
13. Handle
14. CAUTION LABEL
Optional Accessories
For details of options, either refer to the catalog or inquire at the store of
purchase or a Makita sales ofce.
CAUTION: These accessories or attachments are recommended for
use with your Makita tool specied 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.
•Makita genuine battery and charger
•USB adapter
•Power supply cable
•Hand strap
•Laser Receiver LDG-3
•Wall mount
•Tripod
•Shoulder strap
•Laser viewing glass
•Storage case
1
2
2
2
3
4
5
6
7
89
10
11
12
13
14

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NOTE: Some items in the list may be included in the tool package as
standard accessories. They may differ from country to country.
Installing or removing battery cartridge
CAUTION
•Always be sure that the tool is switched off and the battery cartridge is
removed before adjusting or checking function on the tool.
•Always switch off the tool before installing or removing of the battery
cartridge.
•Hold the tool and the battery cartridge rmly when installing or removing
battery cartridge. Failure to hold the tool and the battery cartridge rmly
may cause them to slip off your hands and result in damage to the tool
and battery cartridge and a personal injury.
1. Red-colored section
2. Button
To remove the battery cartridge, slide it from the tool while sliding the button
on the front of the cartridge.
To install the battery cartridge, align the tongue on the battery cartridge with
the groove in the housing and slip it into place. Insert it all the way until it locks
in place with a little click. If you can see the red indicator on the upper side of
the button, it is not locked completely.
1
2
2
1

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CAUTION
•Always install the battery cartridge fully until the red indicator cannot be
seen. If not, it may accidentally fall out of the tool, causing injury to you or
someone around you.
•Do not install the battery cartridge forcibly. If the cartridge does not slide in
easily, it is not being inserted correctly.
Battery Protection System
The battery is provided with a protection system for automatically turning
output OFF to extend the life of the battery. This occurs due to the battery
protection system, and is not a malfunction.
Operation panel Battery indicator
•If the battery is about to run out during use of the product, the battery
indicator on the operation panel lights. If use is continued in this state, the
laser beam will go out.
•The battery indicator may indicate different remaining capacity from
actual capacity depending on conditions of use, air temperature and other
factors.
NOTE: To ensure prolonged battery use
•Do not recharge fully charged batteries.
•Charge batteries within an ambient temperature range of 10°C to 40°C (50°F to
104°F).
•We recommend inserting batteries that have heated up immediately after use, for
example, into the charger and allowing them to cool down before charging them.

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Using the USB adapter (optional accessory)
1. Make sure that the product is turned OFF and remove the DC jack cover.
Then, connect the DC jack plug of the power supply cable to the DC jack.
2. Connect the battery to the USB adapter.
3. Turn the power switch on the USB adapter ON, then turn the power
switch on this product ON.
* When using the USB adapter with a tripod (optional
accessory), install the hand strap (optional accessory) on
the USB adapter. With the tripod xing screw rmly xed
in place, hook the hand strap onto the xing screw as
shown in the gure. If the xing screw is loose, the USB
adapter might fall, and this might cause it to malfunction,
break the power supply cable or cause the USB terminals
or DC jack to malfunction.
1: Fixing screw
2: Hand strap
3: Tripod
4: Battery
5: USB adapter
6: Power supply cable
NOTICE
•The battery cannot be charged by the USB adapter.
•Before using the USB adapter, read its instruction manual.
1
1: DC jack cover
1
2
1: DC jack
2: DC jack plug
1
2
3
4
56

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Using the Multi Line Laser
1. Installing the Multi Line Laser
Set this product on a level surface. Turn the adjustment
screw leg so that the bubble in the circular level comes to
the center of the red circle.
Circular level
When using the tripod, rst set down the tripod. Then
mount the line laser on it. Extend or retract the legs of the
tripod so that the bubble in the level comes to the center of
the red circle.
WARNING
1. Do not place the product or USB adapter at locations where there is the risk of
fall.
2. Before installing the battery on this product and placing on a oor or table, lower
the handle and check the product does not fall over.

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2. Operating the power switch
1. Power switch
[Power ON]
Turn the power switch to the "I/ON" side. The laser beam is emitted. The laser beam is
emitted in the mode that was active when the product was turned OFF last time.
[Power OFF]
Turn the power switch to the "O/OFF" side. The power turns OFF, and the pendulum
inside is locked. After turning the power OFF, disconnect the battery or DC jack.
3. Brightness selection
Select the brightness of the emitted line beam by the brightness selection switch on the
operation panel.
When the power is turned ON, the laser beam is emitted in the Bright mode.
Brightness selection switch
1

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Bright: The line beam is brighter in this mode.
Normal: Brightness is between the Eco and Bright modes.
This is the optimum mode when using the receiver.
Eco: Battery life lasts longer in this mode.
1: Brightness indicator
4. Line beam mode selection
Select the line beam emission mode by the line selection switch on the operation panel.
Line selection switch
When the power is turned ON, the product emits the laser beam in the same mode of
that was turned OFF last time.
SK312GD
1
[Loopback switch system]
Bright
Bright Normal Eco
Red
LED lit LED out Green LED lit
Mode
Brightness
indicator
[Loopback switch system]
Lower dot beam Lower dot beam

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SK209GD
NOTE:
The height of the horizontal line beam can be easily adjusted by using the tripod
(optional accessory).
1: Fine-adjustment knob
Fine-adjustment mechanism
It can be ne-adjusted from either side by turning the ne-adjustment knob.
NOTE: About the rubber foot caps
Use the rubber caps to prevent the oor from being scratched or when the oor is
slippery.
Rubber caps are supplied as standard. These can be removed before use on
uneven surfaces such as concrete oor.
[Loopback switch system]
Lower dot beam Lower dot beam
1