WARNING
The following show symbols used for the machine.
Be sure that you understand their meaning before
use.
CS3630DA: Cordless Chain Saw
To reduce the risk of injury, user must read
instruction manual.
Do not use a power tool in the rain and
moisture or leave it outdoors when it is raining.
Read, understand and follow all warnings and
instructions in this manual and on the unit.
Always wear eye, head and ear protectors
when using this unit.
It is important that you wear the protective
clothing for feet, legs, hands and fore-arms.
Warning, kickback danger. Be careful of
possible sudden and accidental upward and/or
backward motion of the guide bar.
This chain saw is for use by trained tree
service operator only.
Chain oil fi ll
Chain oil deliver y rate adjustment
Light switch
Batter y level indicator switch
Disconnect the battery
WHAT IS WHAT? (Fig. 1)
A: Switch: Device activated by the fi nger.
B: Lock- off button: But ton that prevents the accidental
operation of the trigger.
C: Chain brake: Device for stopping or locking the saw
chain.
D: Spiked bumper: Device for acting as a pivot when in
contact with a tree or log.
E: LED light: Light that illuminate the cutting edge.
F: Oil tank cap: Cap for closing the oil tank.
G: Oil sight glass: Window to check chain oil amount.
H: Front handle: Suppor t handle located at or towards the
front of the main body.
I: Battery: Power source to drive the unit.
J: Rear handle (Top handle): Support handle located on
the top of the main body.
K: Hook: Tool for hanging the unit with rope etc.
L: Tension dial: Device for adjusting tension of saw chain.
M: Knob: Knob for securing tension dial and side cover.
N: Saw chain: Chain, serving as a cutting tool.
O: Guide bar: The par t that suppor ts and guides the saw
chain.
P: Side cover: Protective cover to the guide bar, saw
chain, clutch and sprocket when the chain saw is in
use.
Q: Charger: For charging the batter y.
R: Oil feeder: Container for oil.
S: Chain case: Case for covering the guide bar and saw
chain when the unit is not being used.
T: Bolt: Bolt for fi xing the side cover in place.
U: Hexagonal bar wrench: Tool for loosening and
tightening the bolt.
WARNING
This chain saw (CS3630DA) is designed especially for
tree care and surger y. Only persons trained in tree care
and surgery may use this saw. Observe all literature,
procedures and recommendations from the relevant
professional organization. Failure to do so constitutes a
high accident risk. We recommend always using a rising
platform for sawing in trees. Rappelling techniques are
extremely dangerous and require special training. The
operator must be trained in and familiar with the use of
safet y equipment and working and climbing techniques.
Always use the restraining equipment for both the
operator and the saw.
GENERAL POWER TOOL SAFETY
WARNINGS
WARNING
Read all safet y warnings and all instructions.
Failure to follow the warnings and instructions may result in
electric shock, fi re 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.
1) Wor k a rea saf ety
a) Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
b) Do not operate power tools in explosive
atmospheres, such as in the presence of
fl ammable liquids, gases or dust.
Power tools create s parks which may ig nite the dust
or fumes.
c) Keep children and bystanders away while
operating a power tool.
Distractions can cause you to lose control.
2) Electrical safety
a) Power tool plugs must match t he outlet.
Never modify the plug in any way.
Do not use any adapter plugs with earthed
(grounded) power tools.
Unmodifi ed plugs and matching outlets will reduce
risk of electric shock.
b) Avoid body contact with eart hed 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.
c) Do not expose power tools to rain or wet
conditions.
Water entering a power tool will increase the risk of
electric shock.
d) 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.
e) 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.
6
Page 7
f) 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.
3) Personal safety
a) 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 infl uence of drugs, alcohol or
medication.
A moment of inattention while operating power
tools may result in serious personal injury.
b) 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.
c) Prevent unintentional star ting. Ensure the
switch is in the off position before connecting
to power source and/or batter y pack , picking
up or carrying the tool.
Carr ying power tools with your fi nger on the switch
or energising power tools that have the switch on
invites accidents.
d) Remove any adjusting key or wrench before
turning the power tool on.
A wrench or a key left attached to a rotating par t of
the power tool may result in personal injur y.
e) Do not overreach. Keep proper footing and
balance at all times.
This enables better control of the power tool in
unexpected situations.
f) 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.
g) 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.
4) Power tool use and care
a) 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.
b) 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.
c) 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 prevent ive s afety meas ure s reduce the ris k of
starting the power tool accidentally.
d) Store idle power tools out of the reach of
children and do not allow persons unfamiliar
with the power tool or these inst ructions to
operate the power tool.
Power to ols are danger ous in the hand s of untrained
users.
e) Maintain power tools. Check for misalignment
or binding of moving parts, breakage of parts
and any other condition that may aff ect the
power toolsʼ operation.
If damaged, have the power tool repaired
before use.
Many accidents are caused by poorly maintained
power tools.
f) Keep cutting tools sharp and clean.
Properly maintained cutting tools with sharp cutting
edges are less likely to bind and are easier to
control.
g) 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 diff erent
from those intended could result in a hazardous
situation.
5) Battery tool use and care
a) Recharge only with the charger specifi ed by
the manufacturer.
A charger that is suitable for one type of battery
pack may create a risk of fi re when used with
another battery pack.
b) Use power tools only with specifi cally
designated battery packs.
Use of any other batter y packs may create a risk of
injur y and fi re.
c) 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.
Shor ting the battery terminals together may cause
burns or a fi re.
d) Under abusive conditions, liquid may be
ejected from the battery; avoid contact . If
contact accidentally occurs, fl ush with water. If
liquid contacts eyes, additionally seek medical
help.
Liquid ejected from the battery may cause irritation
or burns.
6) Ser vic e
a) Have your power tool serviced by a qualifi ed
repair person using only identical replacement
parts.
This will ensure that the safety of the power tool is
maintained.
PRECAUTION
Keep children and infi rm persons away.
When not in use, tools should be stored out of reach
of children and infi rm persons.
CHAIN SAW SAFETY WARNINGS
1. Keep all parts of the body away from the saw chain when
the chain saw is operating. Before you start the chain
saw, make sure the saw chain is not contacting anything.
A moment of inattention while operating chain saws
may cause entanglement of your clothing or body with
the saw chain.
2. Always hold the chain saw with your right hand on the rear
handle and your left hand on the front handle. Holding
the chain saw with a reversed hand confi guration
increases the risk of personal injury and should never
be done.
3. Hold the power tool by insulated gripping surfaces only,
because the saw chain may contact hidden wiring. Saw
chains contacting a “live” wire may make exposed
metal parts of the power tool “live” and could give the
operator an electric shock.
4. Wear safety glasses and hearing protection. Further
protective equipment for head, hands, legs and feet
is recommended. Adequate protective clothing will
reduce personal injury by fl ying debris or accidental
contact with the saw chain.
7
Page 8
5. Do not operate a chain saw in a tree. Operation of a
chain saw while up in a tree may result in personal
injury.
6. Always keep proper footing and operate the chain saw
only when standing on fi xed, secure and level surface.
Slippery or unstable surfaces such as ladders may
cause a loss of balance or control of the chain saw.
7. When cutting a limb that is under tension be alert for
spring back. When the tension in the wood fi bres is
released the spring loaded limb may strike the operator
and/or throw the chain saw out of control.
8. Use extreme caution when cutting brush and saplings.
The slender material may catch the saw chain and be
whipped toward you or pull you off balance.
9. Carry the chain saw by the front handle with the chain saw
switched off and away from your body. When transporting
or storing the chain saw always fi t the guide bar cover.
Proper handling of the chain saw will reduce the likelihood
of accidental contact with the moving saw chain.
10. Follow instructions for lubricating, chain tensioning
and changing accessories. Improperly tensioned or
lubricated chain may either break or increase the
chance for kickback.
11. Keep handles dry, clean, and free from oil and grease.
Greasy, oil y handles are sli ppery causing loss of contr ol.
12. Cut wood only. Do not use chain saw for purposes not
intended. For example: do not use chain saw for cutting
plastic, masonry or non-wood building materials. Use of
the chain saw for operations diff erent than intended
could result in a hazardous situation.
Causes and operator prevention of kickback: (Fig. 2)
Kickback may occur when the nose or tip of the guide
bar touches an object, or when the wood closes in and
pinches the saw chain in the cut.
Tip con tact in some cases may cau se a sudden revers e
reaction, kicking the guide bar up and back towards the
operator.
Pinching the saw chain along the top of the guide bar
may push the guide bar rapidly back towards the
operator.
Either of these reactions may cause you to lose control
of the saw which could result in serious personal
injur y. Do not rely exclusively upon the safety devices
built into your saw. As a chain saw user, you should
take several steps to keep your cut ting jobs free from
accident or injury.
Kickback is the result of tool misuse and/or incorrect
operat ing procedur es or conditio ns and can be avoid ed
by taking proper precautions as given below:
○ Maintain a fi rm grip, with thumbs and fi ngers encircling
the chain saw handles, with both hands on the saw
and position your body and arm to allow you to resist
kickback forces. Kickback forces can be controlled by
the operator, if proper precautions are taken. Do not let
go of the chain saw.
○ Do not overreach and do not cut above shoulder
height. This helps prevent unintended tip contact and
enables better control of the chain saw in unexpected
situations.
○ Only use replacement bars and chains specifi ed by the
manufacturer. Incorrect replacement bars and chains
may cause chain breakage and/or kickback.
○ Fo llow the ma nufactu rer’s shar pening an d mainten ance
instructions for the saw chain. Decreasing the depth
gauge height can lead to increased kickback.
ADDITIONAL SAFETY WARNINGS
1. Work without pressure. In addition, always keep your
body warm.
2. Before commencing work, refl ect fully on the work
procedures involved and work to avoid accidents,
otherwise injury may occur.
3. Do not use i n the event of bad we ather, such as st rong wind,
rain, snow, fog, or in areas prone to rockfall or avalanches.
In bad weather, judgment may be impaired and the
vibration may result in disaster.
4. When visibility is poor, such as during bad weather or
night, do not use the unit. In addition, do not use it in
rain or in a location exposed to rain.
Unstable foothold or loss of balance may result in an
accident.
5. Check the guide bar and saw chain before star ting the
unit.
○ If the guide bar or saw chain is cracked, or the product
is scratched or bent, do not use the unit.
○ Check if the guide bar and saw chain are securely
installed. If the guide bar or saw chain is broken or
dislodged, this may result in an accident.
6. Before star ting work, check to ensure the switch does
not engage unless the lock-off but ton is pressed.
If the unit does not working properly, immediately stop
using and request repair from your Hitachi Authorized
Service Center.
7. Install the saw chain properly, in accordance with the
instruction manual.
If installed incorrectly, the saw chain will come off the
guide bar and injury may occur.
8. Never remove any of the safety devices equipped
on the chain saw (brake lever, lock-off button, chain
catcher etc.).
In addition, do not alter or immobilize them.
Injury may occur.
9. In the following cases, switch the unit off and ensure
the saw chain is no longer moving:
○ When not in use or being repaired.
○ When shif ting to a new work location.
○ When inspecting, adjusting or replacing the saw chain,
guide bar, chain case and any other par t.
○ When refi lling the chain oil.
○ When removing dust etc. from the body.
○ When removing obstacles, trash or sawdust generated
from work from the work area.
○ When you take off the unit, or when you get away from
the unit.
○ Otherwise, if you sense danger or anticipate risk.
If the saw chain is still moving, an accident may occur.
10. Work should generally be performed individually.
When multiple individuals are involved, ensure
suffi cient spacing between them.
In particular, when felling standing trees or working on
a slope, if you anticipate trees falling, rolling or sliding,
ensure there is no danger to other workers.
11. Remain more than 15 m away from other people.
In addition, when working with multiple persons,
remain 15 m or more apar t.
○ There is a risk of impact with scatters and other
accidents.
○ Prepare a whistle alert etc. and determine appropriate
contact method for other workers beforehand.
12. Before felling standing trees, ensure the following:
○ Determine a safe evacuation location prior to felling.
○ Remove ob stacles (e.g., branc hes, shrubs) in advance.
○ Based on a comprehensive evaluation of the state
of the tree to be felled (e.g., trunk bend, tension of
branches) and the surrounding situation (e.g., state of
adjacent trees, presence of obstacles, terrain, wind),
decide on the direction in which the standing tree will
fall and then plan the felling procedure.
Careless felling may result in injury.
13. When felling standing trees, ensure the following:
○ During work, be ver y careful of the direction in which
trees fall.
○ When working on a slope, ensuring the tree will not roll,
always work from the uphill side of the terrain.
8
Page 9
○ When the tree starts falling, switch the unit off , aler t
the surroundings, and immediately retreat to a safe
location.
○ During work, if the saw chain or guide bar become
entangled in the tree, switch off and use a wedge.
14. During use, if the unit performance deteriorates, or you
notice any abnormal sound or vibration, immediately
switch off and discontinue use, and return to your
Hitachi Authorized Service Center for inspection or
repair.
If you continue using, injur y may occur.
15. If the unit is acc identally dro pped or exposed to impact,
inspect carefully for damage or cracks and ensure
there is no deformation.
If the unit is damaged, cracked or deformed, injury may
occur.
16. When transporting the unit by car, secure the unit to
prevent it moving.
There is a risk of accident.
17. Do not switch the unit on while the chain case is
attached.
Injury may occur.
18. Ensure there are no nails and other foreign objects in
the material.
If the saw chain impact on the nail etc., injury may
occur.
19. To avoid the guide bar becoming entangled with the
material when chopping on a verge or when subject to
the weight of material while cutting, install a suppor ting
platform close to the cutting position.
If the guide bar becomes entangled, injury may occur.
20. If the unit is to be transported or stored af ter use, either
remove the saw chain, or attach the chain cover.
If the saw chain comes into contact with your body,
injur y may occur.
21. Adequately care for the unit.
○ To ensure work can be per formed safely and effi ciently,
care for the saw chain to ensure it provides optimal
cutting performance.
○ When re placing the s aw chain or guide b ar, main taining
the body, fi lling oil etc., follow the instruction manual.
22. Ask the shop to repair the unit.
○ Do not modif y this product, since it already complies
with the applicable safety standards.
○ Always refer to your Hitachi Authorized Service Center
for all repairs.
Attempting to repair the unit yourself may result in an
accident or injury.
23. When not using the unit, ensure it is properly stored.
Drain off the chain oil, and keep in a dry place out of
reach of children or a locked location.
24. If the warning label is no longer visible, peels off or is
otherwise unclear, apply a new warning label.
For the warning label, refer to your Hitachi Authorized
Service Center.
25. When working, if local rules or regulations apply,
comply with the same.
26. Do no t use the produ ct if the tool or t he battery t erminals
(battery mount) are deformed.
Installing the battery could cause a shor t circuit that
could result in smoke emission or ignition.
27. Keep the tool’s terminals (battery mount) free of swarf
and dust.
○ Prior to use, make sure that swarf and dust have not
collected in the area of the terminals.
○ During use, tr y to avoid swarf or dust on the tool from
falling on the bat tery.
○ When suspending operation or after use, do not leave
the tool in an area where it may be exposed to falling
swarf or dust.
Doing so could cause a short circuit that could result in
smoke emission or ignition.
PRECAUTIONS FOR BATTERY AND
CHARGER
1. Always charge the battery at an ambient temperature
of -10–40°C. A temperature of less than -10°C will
res ult in over cha rging whi ch i s dangero us. The batte ry
cannot be charged at a temperature greater than 40°C.
The most suitable temperature for charging is that of
20–25°C.
2. Do not use the charger continuously.
When one charging is completed, leave the charger for
about 15 minutes before the nex t charging of battery.
3. Do not allow foreign matter to enter the hole for
connecting the rechargeable battery.
4. Never disassemble the rechargeable batter y or
charger.
5. Never short-circuit the rechargeable bat tery.
Short-circuiting the batter y will cause a great electric
current and overheat. It r esults in burn or damage to the
battery.
6. Do not dispose of the batter y in fi re.
If the battery is burnt, it may explode.
7. Using an exhausted battery will damage the charger.
8. Bring the battery to the shop from which it was
purchased as soon as the post-charging battery life
becomes too short for practical use. Do not dispose of
the exhausted battery.
9. Do not insert objects into the air ventilation slots of the
charger.
Inserting metal objects or fl ammable into the charger
air ventilation slots will result in an electrical shock
hazard or damage to the charger.
CAUTION ON LITHIUM-ION BATTERY
To extend the lifetime, the lithium-ion battery equips with
the protection function to stop the output.
In the cases of 1 to 3 described below, when using this
produc t, even if you are pul ling the switc h, the motor may sto p.
This is not the trouble but the result of protection function.
1. When the battery power remaining runs out, the motor
stops.
In such a case, charge it up immediately.
2. If the tool is overloaded, the motor may stop. In this
case, release the switch of tool and eliminate causes of
overloading. After that, you can use it again.
3. If the batter y is overheated under overload work, the
batter y power may stop.
In this case, stop using the battery and let the battery
cool. After that, you can use it again.
Furthermore, please heed the following warning and
caution.
WARNING
In order to prevent any battery leakage, heat generation,
smoke emission, explosion and ignition beforehand,
please be sure to heed the following precautions.
1. M ake sure that swar f and dust do not co llect on the bat tery.
○ During work make sure that swarf and dust do not fall
on the bat tery.
○ Make sure that any swarf and dust falling on the power
tool during work do not collect on the battery.
○ Do not store an unused battery in a location exposed to
swarf and dust.
○ Before storing a battery, remove any swarf and dust
that may adhere to it and do not store it together with
metal parts (screws, nails, etc.).
2. Do not pierce batter y with a sharp object such as a
nail, strike with a hammer, step on, throw or subject the
batter y to severe physical shock.
3. Do not us e an apparently damaged or deformed battery.
4. Do not use the batter y in reverse polarity.
9
Page 10
5. Do not connect directly to an electrical outlets or car
cigarette lighter sockets.
6. Do not use the bat tery for a purpose other than those
specifi ed.
7. If the battery charging fails to complete even when a
specifi ed recharging time has elapsed, immediately
stop further recharging.
8. Do not put or subject the battery to high temperatures
or high pressure such as into a microwave oven, dryer,
or high pressure container.
9. Keep away from fi re immediately when leakage or foul
odor are detected.
10. Do not use in a location where strong static electricity
generates.
11. If there is battery leakage, foul odor, heat generated,
disco lored or de formed, or i n any way appea rs abnorm al
during use, recharging or storage, immediately remove
it from the equipment or battery charger, and stop use.
12. Do not immerse the battery or allow any fl uids to fl ow
inside. Conductive liquid ingress, such as water, can
cause damage resulting in fi re or explosion. Store your
batter y in a cool, dry place, away from combustible and
fl ammable items. Corrosive gas atmospheres must be
avoided.
CAUTION
1. If l iquid leakin g from the batte ry gets into your e yes, do not
rub your eyes and wash them well with fresh clean water
such as tap water and contact a doctor immediately.
If left untreated, the liquid may cause eye-problems.
2. If liquid leaks onto your skin or clothes, wash well with
clean water such as tap water immediately.
There is a possibility that this can cause skin irritation.
3. If you fi nd rust, foul odor, overheating, discolor,
deformation, and/or other irregularities when using the
battery for the fi rst time, do not use and return it to your
supplier or vendor.
WARNING
If an electrically conductive foreign object enters the
terminals of the lithium ion battery, a shor t-circuit may
occur resulting in the risk of fi re. Please observe the
following matters when storing the bat tery.
○ Do not place electrically conductive cuttings,
nails, steel wire, copper wire or other wire in the
storage case.
○ Either install the batter y in the power tool or store
by securely pressing into the battery cover until
the ventilation holes are concealed to prevent
short-circuits (See Fig. 3).
Power Output
Wh
2 to 3 digit number
USB DEVICE CONNECTION
PRECAUTIONS (UC18YSL3)
When an unexpected problem occurs, the data in a USB
device connected to this product may be corrupted or lost.
Always make sure to back up any data contained in the
USB device prior to use with this product.
Please be aware that our company accepts absolutely no
responsibility for any data stored in a USB device that is
corrupted or lost, nor for any damage that may occur to a
connected device.
WARNING
○ Prior to use, check the connecting USB cable for any
defect or damage.
Using a defective or damaged USB cable can cause
smoke emission or ignition.
○ When the product is not being used, cover the USB
port with the rubber cover.
Buildup of dust etc. in the USB port can cause smoke
emission or ignition.
NOTE
○ There may be an occasional pause during USB
recharging.
○ When a USB device is not being charged, remove the
USB device from the charger.
Failure to do so may not only reduce the battery life
of a USB device, but may also result in unexpected
accidents.
○ It may not be possible to charge some USB devices,
depending on the type of device.
REGARDING LITHIUM-ION BATTERY
TRANSPORTATION
When transporting a lithium-ion battery, please observe
the following precautions.
WARNING
Notify the transpor ting company that a package contains a
lithium-ion batter y, inform the company of its power output
and follow the instructions of the transportation company
when arranging transport.
○ Lithium-ion batteries that exceed a power output of
100Wh are considered to be in the freight classifi cation
of Dangerous Goods and will require special
application procedures.
○ For transportation abroad, you must comply with
international law and the rules and regulations of the
destination country.
10
Page 11
DESCRIPTION OF NUMBERED ITEMS (Fig. 3-Fig. 47)
Battery
1
Latch
2
Ventilation holes
3
Ter mi na ls
4
Batter y cover
5
Insert
6
Pull out
7
Rear handle
8
(Top handle)
Charge indicator lamp
9
Knob
0
Ten sio n di al
!
Side cover
@
Saw chain
#
Guide bar
$
Guide bar tip
%
Sprocket
^
Blade direction
&
Bolt
*
Bolt hole
(
Increase the tension
)
Decrease the tension
q
Drive link
w
Fasten
e
Chain brake
r
Pull
t
Chain oil
y
Light switch
u
Oil sight glass
i
Oil pump adjuster
o
Lock-off button
p
Switch
a
Batter y level indicator
s
switch
Batter y level indicator
d
lamp
Hook
f
Actuation
g
Release
h
Spike
j
Rear handle
k
(Top handle)
Front handle
l
Round fi le
;
1/5 of diameter of fi le
z
Depth gage jointer
x
Flat fi le
c
Protruding depth gage
v
head
Round off
b
n
m
,
.
/
¡
™
£
¢
∞
§
¶
SPECIFICATIONS
POWER TOOL
ModelCS3630DA
Voltage36 V
Saw chain
Guide bar
SprocketNumber of teeth: 6 / 9.5 mm (3/8")
No-load chain speed8.3 m/s (500 m/min)
Chain oil tank capacit y80 ml
LED lightWhite LED
Battery available for this tool*BSL36A18
Weight4.3 kg (With BSL36A18 attached)
* Existing batteries (BSL3660/3620/3626, BSL18xx series, etc.) cannot be used with this tool.
Pitch: 9.5 mm (3/8") / Gage: 1.3 mm (0.05")
Type: 91PX-45XJ
Type: P012-50CR
Size: 300 mm (Max. cutting legth)
Brake band chamber
Chain oil spout
Groove
Oil hole
Wear li mit
Nail of carbon brush
Protrusion of carbon
brush
Brush cap
Contact portion of
brush tube
Chain tensioner hole
Chain tensioner boss
Hexagonal bar wrench
BATTERY
ModelBSL36A18
Voltage36 V / 18 V (Automatic Switching*)
Battery capacity
Available cordless
products**
Available charger
* The tool itself will automatically switch over.
** Please see our general catalogue for details.
2.5 Ah / 5.0 Ah
(Automatic Switching*)
Multi volt series, 18V product
Sliding charger for lithium ion
batteries
CHARGER
ModelUC18YSL3
Charging voltage14.4 V – 18 V
Weight0.6 kg
STANDARD ACCESSORIES
In addition to the main unit (1 unit), the package contains
the accessories listed on page 20.
Standard accessories are subject to change without
notice.
11
Page 12
OPTIONAL ACCESSORIES (sold
separately) (Page 21)
Optional accessories are subject to change without notice.
APPLICATIONS
○ Cutting of timber/logs
○ Pruning, felling of garden trees
BATTERY REMOVAL/INSTALLATION
1. Battery removal
Hold the housing tightly and push the bat tery latches to
remove the batter y (see Fig. 4).
CAUTION
Never short-circuit the battery.
2. Battery installation
Insert the battery while observing its polarities
(see Fig. 4).
Table 1
Indications of the charge indicator lamp
Lights for 0.5 seconds. Does not light
for 0.5 seconds. (off for 0.5 seconds)
Lights for 0.5 seconds. Does not light
for 1 second. (off for 1 second)
Lights for 1 second. Does not light
for 0.5 seconds. (off for 0.5 seconds)
Lights continuously
Lights continuously
(Continuous buz zer sound: about 6
seconds)
Lights for 0.3 seconds. Does not light
for 0.3 seconds. (off for 0.3 seconds)
Lights for 0.1 seconds. Does not light
for 0.1 seconds. (off for 0.1 seconds)
(Intermittent buzzer sound: about 2
seconds)
Charge
indicator
lamp
(RED /
BLUE /
GREEN /
PURPLE)
Before
charging
While
charging
Charging
complete
Overheat
standby
Charging
impossible
Blinks
(RED)
Blinks
(BLUE)
Blinks
(BLUE)
Lights
(BLUE)
Lights
(GREEN)
Blinks
(RED)
Flickers
(PURPLE)
CHARGING
Before using the power tool, charge the battery as follows.
1. Connect the charger ’s power cord to the
receptacle.
When connecting the plug of the charger to a
receptacle, the charge indicator lamp will blink in red
(At 1- second intervals).
2. Insert the battery into the charger.
Firmly insert the battery into the charger as shown in
Fig. 5 (on page 2).
3. Charging
When inserting a battery in the charger, the charge
indicator lamp will blink in blue.
When the batter y becomes fully recharged, the charge
indicator lamp will light up in green. (See Table 1)
(1) Charge indicator lamp indication
The indications of the charge indicator lamp will be
as shown in Table 1, according to the condition of the
charger or the rechargeable battery.
Plugged into power source
Battery capacity at less than 50%
Battery capacity at less than 80%
Battery capacity at more than 80%
Battery overheated. Unable to
charge. (Charging will commence
when battery cools)
Malfunction in the bat tery or the
charger
12
Page 13
(2) Regarding the temperatures and charging time of the rechargeable batter y
The temperatures and charging time will become as shown in Table 2.
Table 2
Charger
Type of batter yLi-ion
Temperatures at which
the battery can be
recharged
The recharging time may vary ac cording to the am bient
temperature and power source voltage.
4. Disconnect the charger’s power cord from the
receptacle.
5. Hold the charger fi rmly and pull out the bat tery.
NOTE
Be sure to pull out the bat tery from the charger after
use, and then keep it.
Regarding electric discharge in case of new
batteries, etc.
As the internal chemical substance of new batteries
and batteries that have not been used for an extended
period is not activated, the electric discharge might be
low when using them the fi rst and second t ime. This is a
temporary phenomenon, and normal time required for
recharging will be restored by recharging the batteries
2 – 3 times.
How to make the bat teries perform longer.
(1) Recha rge the batter ies before they b ecome comple tely
exhausted.
When you feel that the power of the tool becomes
weaker, stop using the tool and recharge its battery. If
you continue to use the tool and exhaust the electric
current, the battery may be damaged and its life will
become shorter.
(2) Avoid recharging at high temperatures.
A rechargeable battery will be hot immediately after
use. If such a battery is recharged immediately after
use, its internal chemical substance will deteriorate,
and the battery life will be shor tened. Leave the battery
and recharge it after it has cooled for a while.
CAUTION
○ If the battery is charged while it is heated because it
has been left for a long time in a location subject to
direct sunlight or because the batter y has just been
used, the charge indicator lamp of the charger lights
for 0.3 seconds, does not light for 0.3 seconds (off for
0.3 seconds). In such a case, fi rst let the battery cool,
then start charging.
○ When the charge indicator lamp fl ickers (at 0.2-second
intervals), check for and take out any foreign objects in
the charger’s bat tery connector. If there are no foreign
objects, it is probable that the batter y or charger is
malfunctioning. Take it to your authorized Service
Center.
○ Since the built-in micro computer takes about
3 seconds to confi rm that the battery being charged
with UC18YSL3 is taken out, wait for a minimum of
3 seconds before reinserting it to continue charging. If
the battery is reinserted within 3 seconds, the battery
may not be properly charged.
INSTALLING (REPLACING) SAW
CHAIN
WARNING
○ To prevent accidents, always switch the unit off , and
remove the storage batter y.
○ Don't use the saw chain or the guide bar other than
those specifi ed in “SPECIFICATIONS”.
CAUTION
Wear gloves and be careful to avoid injury with the saw
chain.
NOTE
○ When removing the saw chain, remove sawdust from
the oil spout, oil hole, and guide bar groove.
If sawdust accumulates, this may cause the unit to fail.
○ Use the correct type of saw chain in accordance with
the specifi cations.
If you install the wrong type of guide bar, the saw chain
may come off and injury may occur.
1. Removing the side cover (Fig. 6)
1 Rotate the knob once to loosen it.
2 Rotate the tension dial half a turn to loosen it.
3 Using the supplied hexagonal bar wrench, loosen the
bolt until there is no resistance.
4 Turn the knob and remove the side cover.
2. Removing the saw chain and guide bar (Fig. 7)
Remove the saw chain and guide bar in the direction
indicated by the arrow.
13
Page 14
3. Engaging the new saw chain in the sprocket
(Fig. 8, 9)
Engage the saw chain at the guide bar tip with at tention
to the direction of the saw chain, and then properly
engage the saw chain with the sprocket.
4. Installing the side cover
1 Align the bolt with the bolt hole (Fig. 10)
2 Adjust the tension dial of the side cover so that the
chain te nsioner bos s is inserte d into the guide b ar chain
tensioner hole, and attach the side cover. (Fig. 11)
3 Rotate the knob once to temporarily fi x it. (Fig. 12)
5. Adjusting the saw chain tension (Fig. 13)
○ While lifting the guide bar tip, turn the tension dial to
adjust the saw chain tension.
○ Turn the tension dial to the right to increase the saw
chain tension, and to the left to decrease it.
6. Checking the saw chain tension (Fig. 14)
Adjust the saw chain tension so that the gap between
the saw chain drive link and the guide bar is 0.5 to 1 mm
when you lift the saw chain slightly near the center of
the guide bar.
7. Securing the knob (Fig. 15)
1 When adjustment is complete, lift up the guide bar, and
fully tighten the knob.
2 Make sure the bolt is fi rmly tightened.
WARNING
After adjusting the saw chain tension, ensure the knob
is fully tightened.
If it is loose, injur y may occur.
INSPECTION AND PREPARATION
PRIOR TO USE
Prior to u se, make the follo wing inspec tion and prep aration.
WARNING
○ To prevent accidents, always perform steps 1 to 4
ensuring the storage bat tery is removed from the body.
○ Do not secure the lock-off button while it is pressed.
If the switch is accidentally engaged, the unit may
unexpectedly start and injury may occur.
1. Ensuring the switch is off
○ If you insert the storage batter y without knowing
whether the switch is engaged, the unit may
unexpectedly start, which may result in an accident.
○ When the switch is engaged while pressing the lock-
off button, the unit switches on, and when the switch is
released, the unit switches off .
2. Checking the saw chain tension
○ If the saw chain tension is incorrect, there is a risk of
damage to the saw chain or guide bar and malfunction.
Referring to steps 5 to 7 “Installing (replacing) saw
chain,” ensure an appropriate tension is set.
○ While the saw chain is still new, it is particularly
stretchy, so periodically check the tension and adjust
as required.
○ Also check the knob is securely tightened.
3. Checking operation of chain brake (Fig. 16)
WARNING
○ Although the chain brake is an emergency stop device,
this is not completely reliable. Operate carefully to
avoid the risk of kickback.
○ The chain brake i s intended for use in emerg encies and
when starting up. Do not use it indiscriminately.
○ To avoid impaired movement of the chain brake due to
buildup of sawdust etc., clean regularly.
○ The chain brake is an important component to ensure
safe use.
If you have any concern regarding the brake operation,
request repair from your Hitachi Authorized Service
Center.
The chain brake is an emergency stop device that stops
the saw chain when the unit is subject to kickback etc., to
reduce risk.
(Refer to “Causes and operator prevention of kickback.”)
When act ivating the cha in brake by pushin g the brake lever
forward, the saw chain stops moving.
If you pull the brake leve r toward you, the brake is r eleased.
When confi rming the operation of the chain brake, always
switch the unit off , remove the battery, activate the brake
lever and pull the saw chain by hand.
If the saw chain does not move, this means the chain brake
is activated.
NOTE
Always wear thick gloves for this task.
Since the saw chain blade is ver y sharp, pulling it hard
risks injuring your fi ngers.
4. Checking the chain oil
○ This unit is delivered without chain oil inside. Ensure
the oil tank is fi lled with the chain oil provided before
use. (Fig. 17)
○ Periodically check the oil sight glass during work and
replenish oil as required.
○ When you press the light switch on the switch panel,
an LED light turns on and the internal light improves
visibility. (Fig. 18)
(Check this in step 6.)
○ If the chain oil supplied runs out, use Hitachi chain oil
sold separately or equivalent chain oil on the market.
○ The chain oil lubricates automatically.
The discharge rate for auto lubrication is factor y preset
to the maximum.
To reduce the discharge rate, turn the oi l pump adjuster
on the rear of the body clockwise. (Fig. 19)
NOTE
○ The oil tank capacity is about 80 ml.
Even if overfi lled, excess oil will escape from the
overfl ow spout. ○ We recommend that you stock up with chain oil.
If you continue working without chain oil, the saw chain
may burn through, or the motor may fail.
○ Be careful to avoid dust or other foreign matter from
entering the oil tank.
If dust and other foreign matter enter the oil tank, the
unit may fail.
○ Chain oil left in the tank may leak due to the structure of
this unit. Although this does not indicate a malfunction,
it may soil the storage location, so be careful.
When storing, empty the oil from the oil tank, and place
an item under the main body which can absorb any
leaks.
5. Installing the storage battery (Fig. 4)
As shown in Fig. 4, push fi rmly until it clicks into place.
CAUTION
Securely attach the storage bat tery.
If the storage battery is not securely attached, it may
come off and injury may occur.
6. Checking if the LED light works (Fig. 18)
○ When you press the light switch, the LED light turns on
and when released, the light goes out.
○ The LED light illuminates the cutting edge section.
○ It lights up the inside of the oil sight glass to facilitate
checks of the remaining oil level.
NOTE
If the light is dir ty, carefully wipe with a soft cloth etc., to
avoid damaging it.
If the light is damaged, this will reduce the brightness.
7. Checking brake is engaged
○ When the switch is engaged while pressing the lock-
off button, the unit switches on, and when the switch is
released, the unit switches off . ○
In addition, 1 to 3 seconds after releasing the switch, the
unit applies a brake to stop the rotation of the saw chain.
○ Before using, check to ensure brake is engaged.
14
Page 15
CAUTION
Be careful of the repulsive force when the brake is
engaged.
If you drop the unit, injury may occur.
8. Checking chain oil discharge (Figs. 19, 20)
○ When switching the unit on, chain oil automatically
lubricates the saw chain and guide bar.
○ If oil does not seem to emerge 2 to 3 minutes after
the unit starts, check if any sawdust has accumulated
around the oil spout.
(Refer to “Cleaning the chain oil spout.”)
(Refer to “Checking the chain oil.”)
Switch operation
When the switch is engaged while pressing the lock-off
button, the saw chain rotates. (Fig. 21)
Unless the lock-off but ton i s pres sed, the sw itch can not
be engaged.
Af ter the switch is engaged, the saw chain continues
rotating as long as it is pressed down. In addition, the
LED light remains lit up.
When the switch is released, a brake is applied to stop
the saw chain rotation.
WARNING
Do not secure the lock-off but ton while it is pressed.
If the switch is accidentally engaged, the unit may
unexpectedly start and injury may occur.
Using the hook
Pull out the hook from the unit, to which a rope etc. can
be tied to suspend the unit. (Fig. 23)
WARNING
When using the hook, ensure the unit is securely
suspended to avoid the risk of falling.
If the unit falls, an accident may occur.
REMAINING BATTERY INDICATOR
You can check the battery’s remaining capacity by
pressing the remaining battery indicator switch to light the
indicator lamp. (Fig. 22, Table 3)
The indicator will shut off approximately 3 seconds after
the remaining batter y indicator switch is pressed.
It is best to use the remaining battery indicator as a
guide since there are slight diff erences such as ambient
temperature and the condition of the bat tery.
Also, the remaining battery indicator may var y from those
equipped to a tool or charger.
Table 3
State of lamp
Batter y Remaining Power
Lights ;
The battery remaining power is over 75%.
Lights ;
The battery remaining power is 50% – 75%.
Lights ;
The battery remaining power is 25% – 50%.
Lights ;
The battery remaining power is less than
25%.
Blinks ;
The battery remaining power is nearly empty.
Recharge the batter y soonest possible.
Blinks ;
Output suspended due to high
temperature. Remove the bat tery from the
tool and allow it to fully cool down.
Blinks ;
Output suspended due to failure or
malfunction. The problem may be the
batter y so please contact your dealer.
As the remaining battery indicator shows somewhat
diff erently depending on ambient temperature and batter y
characteristics, read it as a reference.
NOTE
○ Do not give a strong shock to the switch panel or break
it. It may lead to a trouble.
○ To save the batter y power consumption, the remaining
battery indicator lamp lights while pressing the
remaining battery indicator switch.
CUTTING PROCEDURES
WARNING
○ Prior to operation, ensure that chain brake works.
○ During use, grip the handle securely with both hands.
○ When cutting timber from the bottom, ensure the saw
chain does not impact with the timber.
If the unit is pushed back, injury may occur.
○ During work breaks or af ter work, always sw itch the unit
off , and remove the storage b attery from t he main body.
Always monitor the workplace and surrounding area,
ensure there are no objects which could cause injuries,
accidents or failure, and if any are present, remove them
in advance.
In particular, when establishing a foothold for working,
ensure there is no instability or any object which could be
tripped over.
When felling standing t rees, always pay careful at tention to
the direction in which the tree will fall or roll, and determine
a safe evacuation area and escape route for yourself in
advance.
1 Ensuring the unit is switched off
If the storage battery is inserted while the switch is
unknowingly engaged, the unit may unexpectedly
start, which may result in an accident.
2 Installing the storage battery (Fig. 4)
As shown in Fig. 4, push fi rmly until it clicks into place.
3 Engaging the switch
Ensuring the saw chain is not in contact with the timber,
engage the switch, and start cutting when the saw
chain speed has increased.
CAUTION
○ When switching the unit on, ensure the saw chain does
not contact with material or anything else.
○ During use, be careful to ensure the saw chain does
not contact with other material or object. In par ticular,
when you have fi nished cutting, be careful to ensure it
does not touch the ground.
NOTE
Refi ll the oil tank early to prevent the unit running out of
oil.
1. General cutting procedures
(1) Switch ON the power while keeping the saw slightly
away from the wood to be cut. Start sawing only after
the unit has reached full speed.
(2) When sawing a slender piece of wood, press the base
section of the guide bar against the wood and saw
downward as shown in Fig. 24.
(3) When sawing a thick piece of wood, press the spike on
the front section of the unit against the wood and cut it
with a lever action while using the spike as a fulcrum as
shown in Fig. 25.
(4) When cutting wood horizontally, turn the unit body to
the right so that the guide bar is below and hold the
upper side of the front handle with your left hand. Hold
the guide bar horizontally and place the spike that is
on the front of the unit body on the lumbar. Using the
spike as a fulcrum, cut into the wood by turning the rear
handle to the right. (Fig. 26)
15
Page 16
(5) When cutting into wood from the bottom, touch the
upper part of the guide bar to the wood lightly. (Fig. 27)
(6) As well as carefully studying the handling instructions,
ensure practical instruction in the operation of the chain
saw prio r to use, or at least p ractice work ing with the c hain
saw by cut ting length s of round timbe r on a sawing trest le.
(7) When cutting logs or timbers which are not supported,
support them properly by immobilizing them during
cutting using a sawing trestle or other proper method.
CAUTION
○ When cutting wood from the bottom, there is a danger
that the unit body may be pushed back toward the user
if the chain strongly impacts with the wood.
○ Do not cut all the way thorough the wood by starting
from the bottom since there is the danger of the guide
bar fl ying up out of control when the cut is fi nished.
○ Always prevent the operating chain saw from touching
the ground or wire fences.
2. Branch cutting
(1) Cutting branches from a standing tree:
A thick branch should initially be cut off at a point away
from the trunk of the tree.
First cut in about one third of the way from below, and
then cut off the branch from above. Finally, cut off the
remaining por tion of the branch even with the trunk of
the tree. (Fig. 28)
CAUTION
○ Always be careful to avoid falling branches.
○ Always be alert for chain saw recoil.
(2) Cutting branches from fallen trees:
First cut off branches that do not touch th e ground, then
cut off those which touch the ground. When cutting
thick branches that touch the ground, fi rst cut in about
half of the way from above, then cut the branch off from
below. (Fig. 29)
CAUTION
○ When cut ting off branches which touch the ground, be
careful that the guide bar does not become bound by
pressure.
○ During the fi nal cutting stage, beware of the log
suddenly rolling.
3. Log cutting
When cutting a log positioned as shown in Fig. 30, fi rst
cut in about one third of the way from below, then cut
down all the way from above. When cutting a log that
straddles a hollow as shown in Fig. 31, fi rst cut in about
two thirds of the way from above, then cut upward from
below.
CAUTION
○ Ensure the guide bar does n ot become bound in the log
by pressure.
○ When working on inclined ground, be sure to stand on
the uphill side of the log. If you stand on the downhill
side, the cut-off log may roll toward you.
4. Felling trees
(1) Undercut (
Make undercut facing the direction in which you want
the tree to fall.
The depth of the undercut should be 1/3 of the tree’s
diameter. Never fell trees without proper undercut.
(2) Back cut (
Make a backcut about 5 cm above and parallel to the
horizontal undercut.
If the chain becomes entangled during cutting, stop the
saw and use wedges to free it. Do not cut thorough the
tree.
CAUTION
○ Trees should not be felled in a manner that would
endanger any person, strike any utility line or cause
any property damage.
○ Be sure to stand on the uphill side of the terrain as the
tree is likely to roll or slide downhill after it is felled.
as shown in Fig. 32):
as shown in Fig. 32):
Precaution for cutting work
For large-scale operation or non-stop work
To protect the motor and electronics contained in this
un it, i f it i s expos ed to hi gh te mper ature, this is si gna led
by a fl ashing LED light.
If you cut or push forcibly with a high load or non-stop,
the motor and electronics will heat up and the LED light
will fl ash.
NOTE
○ If the LED light fl ashes, stop using and please allow the
unit to cool su ffi ciently. If you continue to use it, the unit
may sustain damage.
○ In addition, if you work non-stop, when replacing the
battery, please allow the unit to cool down for at least
15 mi nu tes.
○ In addition, when work is interrupted, if the LED light
fl ashes when you turn the switch back on, this means
the unit has not cooled suffi ciently, so please allow
longer downtime before switching back on.
Gripping/pushing force of chain saw
Always grip the chain saw securely.
In addition, do not force the chain saw more than
necessary. When cutting, additional force exer ted on
the chain saw will not accelerate the cutting speed.
This will strain the motor, impair the performance, and
damage o r cause malfun ction of the motor or guide bar.
Use the unit in the range where the saw chain is at a
reasonable speed.
In particular, when the saw chain stops (becomes
jammed) due to the excessive force, it may cause an
injur y or failure of the unit.
Chain catcher
○ The chain catcher is located on the power head just
below the chain to further prevent the possibility of a
broken chain striking the chain saw user.
○ When the saw chain is cut, replace it with a new one
referring to “Installing (replacing) saw chain”.
SHARPENING OF THE CHAIN BLADE
WARNING
To prevent accidents, always turn off the switch and
remove the storage batter y from the main body.
In addition, when using saw chains, always wear thick
gloves.
NOTE
Sharpen the saw chain and adjust the depth gage at
the central pos ition on the guide bar, with th e saw chain
attached to the main body.
When the sharpness of saw chains deteriorates, the motor
and each part of the body are burdened and the effi ciency
declines.
For optimal per formance of the unit, frequent maintenance
is necessary to keep the saw chain sharp.
1. Bl ad e sh ar pe ning
The round fi le should be held against the chain blade
so that one-fi fth of its diameter extends above the top
of the blade, as shown in Fig. 33. Sharpen the blades
by keeping the round fi le at a 30° angle in relation to the
guide bar, as shown in Fig. 34, ensuring that the round
fi le is held straight, as shown in Fig. 35. Ensure that all
saw blades are fi led at the same angle, or the cut ting
effi ciency of the tool will be impaired. Appropriate
angles for sharpening the blades correctly are shown
in Fig. 36. (Round fi le is sold separately.)
2. Adjustment of depth gage
WARNING
○ Do not sand the top part of the bumper tie strap and
guard drive link, nor cause the shape of said parts to
deform.
16
Page 17
○ Adjustment of depth gages must be in line with the
predetermined dimensions and shapes, otherwise the
risk of kickback may increase, causing an injur y.
Bumper tie strap
Depth gages shall be all lined up in the same manner
because they are used to adjust depth at the position
where the cutter inlays into the wood.
When sharpening the saw chain, be sure to check the
depth gage every two or three times.
Place a depth gage jointer on the saw chain, leave the
gage visible at the groove, and use a fl at fi le to bevel the
portion out of the depth gage jointer. (Fig. 38) (Depth
gage jointer and fl at fi le are sold separately.)
After fi ling away the depth gage, round off the front side
of the depth gage as it was. (Fig. 39)
After sharpening the saw chain, place it into chain oil to
wash off the fi lings.
If fi lings are not cleaned off , the saw chain and guide
bar will quickly wear while in use.
Guard drive link
ABOUT USB DEVICE
○ Charging a USB device from an electrical outlet.
(Fig. 48-a)
○ Charging a USB device and battery from an electrical
outlet. (Fig. 48-b)
○ How to recharge USB device. (Fig. 49)
○ When charging of USB device is completed. (Fig. 50)
MAINTENANCE AND INSPECTION
After operation, per form inspection and maintenance of
each par t when storing the unit.
WARNING
During maintenance and inspection, always switch off
the unit and remove the storage battery from the main
body. In addition, disconnect the power plug of the
charger from the outlet.
1. Inspection of saw chains
○ Occasionally inspect the saw chain. In the event of
any abnormality, replace it with a new one referring to
“Installing (replacing) saw chain” .
○ Inspect the chain tension and check If it is correctly
tightened.
○ Stop using the unit when the saw chain becomes blunt
and sharpen it referring to “Sharpening of the chain
blade”.
○ After use, carefully lubricate the saw chain and guide
bars with oil for rust-proofi ng.
CAUTION
Wear gloves to avoid injur y while using a saw chain.
2. Cleaning the side cover and brake band chamber
(Figs. 40, 41)
Clean and remove any sawdust lef t inside the parts.
NOTE
When cleaning the side cover, brake band chamber,
chain oil spout, and side bar, see the procedure
“Installing (replacing) saw chain” and remove the saw
chain.
3. Cleaning the chain oil spout (Fig. 42)
Before cleaning the chain oil spout, remove the side
cover and guide bar.
4. Cleaning the guide bar (Figs. 9, 43)
When sawdust and similar become clogged in the
groove of the guide bar or oil spout, the oil may not fl ow,
which may result in the unit failing.
Remove the guide bar and clean any sawdust clogged
in the groove after use and when replacing the saw
chain. (Refer to “Installing (replacing) saw chain.”)
5. Inspecting the carbon brushes (Fig. 44)
The motor employs carbon brushes which are
consumable parts. Since and excessively worn carbon
brush can result in motor trouble, replace the carbon
brush with new ones when it becomes worn to or
near the “wear limit”. In addition, always keep carbon
brushes clean and ensure that they slide freely within
the brush holders.
NOTE
When replacing the carbon brush with a new one,
be sure to use the Hitachi Carbon Brush Code No.
999068.
6. Replacing carbon brushes
Take out the carbon brush by fi rst removing the brush
cap and then hooking the protrusion of the carbon
brush with a slot ted head screw driver, etc., as shown
in Fig. 45.
When installing the carbon brush, choose the direction
so that the nail of the carbon brush (see Fig. 46) agrees
with the contact portion of brush tube. Then push it in
with a fi nger as illustrated in Fig. 47. L astly, install the
brush cap.
CAUTION
○ Be absolu tely sure to inser t th e nail of the c arbon brush
into the contact portion of brush tube. (You can insert
whichever one of the two nails provided.)
○ Caution must be exercised since any error in this
operation can result in the deformed nail of the carbon
brush and may cause motor trouble at an early stage.
7. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure that
they are properly tightened. Should any of the screws
be loose, retighten them immediately. Failure to do so
could result in serious hazard.
8. Maintenance of the motor
The motor unit winding is the ver y “heart ” of the power
tool.
Exercise due care to ensure the winding does not
become damaged and/or wet with oil or water.
9. Inspection of terminals (tool and battery)
Check to make sure that swarf and dust have not
collected on the terminals.
On occasion check prior, during and after operation.
CAUTION
Remove any swarf or dust which may have collected on
the terminals.
Failure to do so may result in malfunction.
10. Cleaning of the outside
When the chain saw is stained, wipe with a sof t dry cloth
or a cloth m oistened wit h soapy water. Do not use c hloric
solvents, gasoline or paint thinner, for they melt plastics.
11. Storage
When storing the unit, perform cleaning and
maintenance of each par t and mount the chain case to
the guide bar.
Store the chain saw in a place where the temper ature is
less than 40°C and out of reach of children.
NOTE
Storing Lithium-ion Batteries
Make sure the lithium-ion bat teries have been fully
charged before storing them.
Prolonged storage (3 months or more) of batteries with
a low charge may result in per formance deterioration,
signifi cantly reducing battery usage time or rendering
the batteries incapable of holding a charge.
17
Page 18
However, signifi cantly reduced bat tery usage time may
be recovered by repeatedly charging and using the
batteries two to fi ve times.
If the battery usage time is extremely short despite
repeated charging and use, consider the batteries
dead and purchase new batteries.
CAUTION
In the operation and maintenance of power tools, the
safety regulations and standards prescribed in each
countr y must be obser ved.
SELECTING ACCESSORIES
The accessories of this machine are listed on page 21.
Impor tant notice on the batteries for the Hitachi
cordless power tools
Please always use one of our designated genuine
batteries. We cannot guarantee the safety and
performance of our cordless power tool when used
with bat teries other than these designated by us, or
when the battery is disassembled and modifi ed (such
as disassembly and replacement of cells or other
internal parts).
NOTE
Due to HITACHI’s continuing program of research and
development, the specifi cations herein are subject to
change without prior notice.
TROUBLESHOOTING
Use the inspections in the table below if the tool does not operate normally. If this does not remedy the problem, consult
your dealer or the Hitachi Authorized Service Center.
1. Po we r to ol
SymptomPossible causeRemedy
The motor sounds but the
saw chain...
○ does not move
○ does not move freely
The chain brake may be activated.Release by pulling the brake lever toward
The saw chain tension is excessive.Check the saw chain tension, and if it is
Saw chain comes out of the sprocket.Remove the side case, and check the saw
you.
too tight, loosen the tension.
chain is properly engaged on the sprocket.
Inside the side case...
→ sawdust is jammed
→ foreign matter is trapped
In the guide bar groove...
→ sawdust is jammed
→ oil does not fl ow
Poor sharpnessThe saw chain...
Chain oil
○ is slow-fl owing
○ does not come out
(seizes up)
Battery cannot be
installed.
→ is worn out or the blade is broken
→ is rusted
The direction of the saw chain is reversed, Re-attach ensuring the correct direction.
Saw chain tension is loose.Check the saw chain tension and tighten
Lack of chain oil in the tank.Replenish with chain oil.
Chain oil spout is clogged.Clean the chain oil spout.
Attempting to install a battery other than
that specifi ed for the tool.
Remove the side case and clean the chain
cover.
Clean the guide bar groove and the oil
hole.
Make sure there is oil in the oil tank, and
replenish as required.
Sharpen the saw chain.
If the wear or breakage is very severe,
replace with a new saw chain.
if it is loose.
Please install a multi volt type battery.
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Page 19
2. Charger
SymptomPossible causeRemedy
The charge indicator lamp
rapidly fl ickers purple, and
battery charging doesn’t
begin.
The charge indicator lamp
blinks red, and battery
charging doesn’t begin.
Battery usage time is short
even though the bat tery is
fully charged.
The battery takes a long
time to charge.
The USB power lamp
has switched off and the
USB device has stopped
charging.
USB power lamp does not
switch off even though the
USB device has fi nished
charging.
It is unclear what the
charging status of a USB
device is, or whether its
charging is complete.
Charging of a USB device
pauses midway.
Charging of the USB
device pauses midway
when the batter y and the
USB device are being
charged at the same time.
Charging of the USB
device doesn’t start when
the battery and the USB
device are being charged
at the same time.
The battery is not inserted all the way.Insert the battery fi rmly.
There is foreign matter in the battery
terminal or where the bat tery is attached.
The battery is not inserted all the way.Insert the battery fi rmly.
The battery is overheated.If lef t alone, the battery will automatically
The battery’s life is depleted.Replace the battery with a new one.
The temperature of the bat tery, the
charger, or the surrounding environment is
extremely low.
The charger’s vents are blocked, causing
its internal components to overheat.
The cooling fan is not running.Contact a Hitachi Authorized Service
The battery’s capacity has become low.Replace the battery with one that has
The USB power lamp lights up green to
indicate that USB charging is possible.
The USB power lamp does not switch off
even when charging is complete.
The charger was plugged into an electrical
socket while the USB device was being
charged using the battery as the power
source.
A battery was inserted into the charger
while the USB device was being charged
using a power socket as the power source.
The battery has become fully charged.This is not a malfunction.
The remaining batter y capacity is
extremely low.
Remove the foreign matter.
begin charging if its temperature
decreases, but this may reduce batter y
life. It is recommended that the battery be
cooled in a well-ventilated location away
from direct sunlight before charging it.
Charge the battery indoors or in another
warmer environment.
Avoid blocking the vents.
Center for repair s.
capacity remaining.
Plug the charger’s power plug into an
electric socket.
This is not a malfunction.
Examine the USB device that is charging
to confi rm its charging status.
This is not a malfunction.
The charger pauses USB charging for
about 5 seconds when it is diff erentiating
between power sources.
The charger pauses USB charging for
about 5 seconds while it checks whether
the battery has successfully completed
charging.
This is not a malfunction.
When the batter y capacity reaches a
certain level, USB charging automatically
begins.
19
Page 20
CS3630DA111121
CS3630DA (NN)–––121
20
Page 21
BSL36A18
UC18YSL3
(14.4V– 18V)
6699116
944458
957681
6698688
329897999068
6697724
21
Page 22
22
Page 23
23
Page 24
Shinagawa Intercity Tower A, 15-1, Konan 2-chome,
Minato-ku, Tokyo, Japan
Code No. C99724211 G
Printed in China
710
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