Litheli U1CS27042 User manual

Visit our website at: http://www.litheli.com
Operator's Manual
Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference.
Save This Manual
40V BATTERY POWERED
CHAIN SAW
U1CS27042
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please contact us: WWW.LITHELI.COM.
Copyright 2020 Litheli. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Litheli.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service may not be included.
©
Readthis material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

SA
Table of Contents
Safety ......................................................... 2
6.............................................snoitacfiicepS
Setup .......................................................... 8
Operation ................................................... 13
Maintenance .............................................. 19
Parts List and Diagram............................. 22
42....................................................ytnarraW
WARNING SYMBOLS AND DEFINITIONS
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that
follow this symbol to avoid possible injury or death.
,dediovatonfi,hcihwnoitautissuodrazahasetacidnI
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.
Important Safety Information
General Power Tool Safety Warnings
Read all safety warnings and all instructions.
y.
Save all warnings and instructions for future reference.
he term power tool in the warnings refers to your 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
Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of electric shock.
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Personal Safety
1. 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 inattention while operating power
tools may result in serious personal injury.
2. 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.
3. Prevent unintentional starting.
Ensure the Trigger is in the off- position before
connecting to power source, picking up or
carrying the tool.
Carrying power tools with your finger on
the Trigger or energizing power tools that
have the Trigger on invites accidents.
4. Do not overreach. Keep proper footing and
balance at all times.This enables better control
of the power tool in unexpected situations.
5. Dress properly. Do not wear loose clothing or
jewelry. Keep your hair, clothing and gloves
away from moving parts.
Loose clothes, jewelry
or long hair can be caught in moving parts.
6. 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.
7. Only use safety equipment that has been
approved by an appropriate standards agency.
Unapproved safety equipment may not provide
adequate protection. Eye protection must be
ANSI-approved and breathing protection
must be NIOSH-approved for the specific
hazards in the work area.
Power Tool Use and Care
1. 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.
2. Do not use the power tool if the Trigger
does not turn it on and off.
Any power tool that cannot be controlled with
the Trigger is dangerous and must be repaired.
3. Disconnect 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.
4. 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.
5. 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.
6. Keep cutting tools sharp and clean. Properly
maintained cutting tools withsharp cutting edges
are less likely to bind and are easier to control.
7. 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.
Battery Tool Use and Care
1. Recharge only with the charger specified by
the manufacturer. A charger that is suitable
for one type of battery pack may create a risk
of fire when used with another battery pack.
2. Use power tools only with specifically
designated battery packs. Use of any other
battery packs may create a risk of injury and
fire.
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 fire.
4. Under abusive conditions, liquid mamay be
ejected from the battery; avoid contact.
If contact accidentally occurs, flush with water.
If liquid contacts eyes, additionally seek
medical help.Liquid ejected from the
battery may cause irritation or burns.
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Service
This will ensure that the safety of the power tool is maintained.
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 configuration 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 or its own cord.
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 flying debris or accidental
contact with the saw chain.
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 fixed,
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 fibres 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
r. 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.
Improperlytensioned or lubricated chain may
either break orincrease the chance forkickback.
11. Keep handles dry, clean, and free from oil and
grease. Greasy, oily handles are slippery
causing loss of control.
12. Cut wood only. Do not use chain saw for
purposes not intended. For example:
do not use chain saw for cutting plastic,
masonry ornon-wood building materials.
Use of the chain saw for operations different
than intended could result in a hazardous
situation.
13. DANGER! People with pacemakers should
not use chain saws. Chain saws produce strong
electromagnetic fields that can cause
pacemaker interference or pacemaker failure.
People with pacemakers should consult their
physician(s) for advice.
14. Causes and operator prevention of kickback:
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 contact in some cases may cause a sudden
reverse 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 thesereactions may cause youto lose
control of thesaw which could result in serious
personal injury.Donot rely exclusively upon the
safety devices built into yoursaw. As a chainsaw
user, you should takeseveral steps to keep
your cutting jobs free from accident or injury.
Kickback is the result of tool misuse and/ or
incorrect operating procedures or conditions
and can be avoided by taking proper
precautions as given below:
a. Maintain a firm grip, with thumbs and
fingers 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.
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MAINTE
Use this grip
thumb below
handle
Figure A: Holding the Chain Saw
b. Do not overreach and do not cut above
shoulder height. This helps prevent
unintended tip contact and enables better
control of the chainsawin unexpected
situations.
c. Only use replacement bars and
chains specified by the manufacturer.
Incorrect replacement bars and chains may
cause chain breakage and/or kickback.
d. Follow the manufacturer’s sharpening and
maintenance instructions for thesawchain.
Decreasing the depth gauge height
can lead to increased kickback.
15. Maintain labels and nameplates on the tool.
These carry important safety information.
If unreadable or missing, contact Litheli
for a replacement.
16. Avoid unintentional starting. Prepare to begin
work before turning on the tool.
17. Do not leave the tool unattended when the
Battery Pack is connected. Turn off the tool,
and remove the Battery Pack before leaving.
18. The battery Charger gets hot during
use. The Charger’s heat can build up
to unsafe levels and create a fire hazard
if it does not receiveadequate
Especially avoid placing the Charger on
carpets and rugs; they are notonly flammable,
but they also obstruct vents under the Charger.
Place theCharger on a stable, solid,
nonflammablesurface (such as a stablemetal
workbench or concretefloor) at least 1 foot away
from all flammable objects,such as drapes or
walls.Keep a fire extinguisher and asmoke
detector inthe area. Frequently monitorthe
Charger and Battery Pack while charging.
19. This product is not a toy.
Keep it out of reach of children.
20. The warnings,precautions, and instructions
discussed in this instruction manual cannot
cover all possible conditions and situations that
may occur. It must be understood by the
operator that common senseand caution are
factors which cannot bebuilt into this product,
but must besupplied by the operator.
Lithium Battery Safety Warnings
LITHIUM BATTERIES STORE
A LARGE AMOUNT OF ENERGY AND
WILL VENT FIRE OR EXPLODE IF MISTREATED:
1. Keep Battery
Pack dry.
2. DO NOT DO ANY OF THE FOLLOWING
TO THE BATTERY PACK:
a. Open,
b. Drop,
c. Short-circuit,
d. Puncture,
e. Incinerate,
.F°401nahtretaergserutarepmetotesopxE.f
3. Charge Battery Pack only according
to its Charger’s instructions.
4. Inspect Battery Pack before every use;
do not use or charge if damaged.
ventilation, due to an electrical fault, or if it is
used in a hot environment. Do not place the
Charger on a flammable surface. Donot
obstruct any vents on the Charger.
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Battery Charger Safety
1. SAVE THESE INSTRUCTIONS – This manual
contains important safety and operating
instructions for Battery Charger Model
U1CS27042.
2. Before using Battery Charger, read all
instructions and cautionary markings on
Battery Charger, Battery, and product using
Battery.
E
3. CAUTION - To reduce risk of injury, charge only
li-ion type rechargeable batteries. Other types
of batteries may burst causing personal injury
and damage.
4. Do not charge or use tool in rain, orin wet locations.
5. Do not use battery-operated tool in rain.
6. Remove or disconnect battery after use, before
servicing, cleaning or removing material from
the tool.
7. Do not dispose of battery in a fire. The cell may
explode. Check with local codes for possible
disposal instructions.
8. Do not open or mutilate the battery. Released
electrolyteis corrosive and may cause damage
to the eyes or skin. It may betoxicif swallowed.
9. Exercise care in handling batteries in order not
to short the battery with conducting materials
such as rings, bracelets, and keys. The battery
or conductor may overheat and cause burns.
Vibration Safety
This tool vibrates during use.
Repeated or long-term exposure to vibration may
cause temporary or permanent physical injury,
particularly to the hands, arms and shoulders.
To reduce the risk of vibration-related injury:
1. Anyone using vibrating tools regularly or for
an extended period should first be examined
by adoctor and then have regular medical
check-ups to ensure medical problems are not
being caused or worsened from use. Pregnant
women or people who have impaired blood
circulation tothe hand,past hand injuries, nervous
system disorders, diabetes, or Raynaud’s Disease
should not use this tool. If you feel any symptoms
related tovibration (such as tingling, numbness,
andwhite or blue fingers),seek medical advice as
soon as possible.
2. Do not smoke during use. Nicotine reduces
the blood supply to the hands and fingers,
increasing the risk of vibration-related injury.
3. Wear suitable gloves to reduce the vibration
effects on the user.
4. Use tools with the lowest vibration when there
is a choice.
5. Include vibration-free periods each day of work.
6. Grip tool as lightly as possible (while still keeping
safe control of it). Let the tool do the work.
7. To reduce vibration, maintain the tool as
explained in this manual. If any abnormal
vibration occurs, stop use immediately.
SAVE THESE INSTRUCTIONS.
Specifications
Charger Input Rating 120VAC / 60Hz
Charger Output Rating 36VDC / 2.1A
Battery Rating 40VDC / 2.0Ah / 72Wh
Battery Type 40V Litheli Li-Ion
Saw Chain 12in
Note:This electric chainsaw is for cutting small logs and for lighter weight trimming jobs.
A more powerful chainsaw may be needed for heavy duty use.
Chain Speed 8m/s
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Grounding
TOPREVENT ELECTRIC SHOCK AND DEATH FROM INCORRECT GROUNDING:
grounded. Do not modify the power cord plug provided with the charger. Do not use the
chargerif the power cord or plug is damaged. If damaged, have it repaired by a service
Extension Cords
Note: Extension cords must not be used with this item’s Charger.
Symbology
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U1CS27042 WWW.LITHELI.COM
Never throw the rechargeable
battery into water.
Risk of explosion! Never throw
batteries onto a fire.
Rechargeable battery contains
lithium! Do not dispose of in trash bin!
- Discharge the rechargeable battery
by operating the tool at idle until the
motor stops.
- Take the rechargeable battery out
of the tool.
Double Insulated
VVolts
~Alternating Current
AAmperes
n0 xxxx/min. No Load Revolutions per Minute (RPM)
WARNING marking concerning Risk
of Eye Injury. Wear ANSI-approved
safety goggles with side shields.
Read the manual before
set-up and/or use.
WARNING marking
concerning Risk of Fire.
Do not cover Charger
ventilation ducts.
Charge on fireproof surface only.
WARNING marking concerning
Risk of Electric Shock.
Properly connect Charger’s power
cord to appropriate outlet.
WARNING marking concerning
Risk of Explosion.
Do not puncture, short, or open
battery packs and do not charge
damaged battery packs.
Do not expose the battery to sunlight
for a long time and do not place it on
radiators (max. 45 ° C).
Dispose of the batteries at a collection point
for old batteries, from where they are taken
to environmentally friendly recycling.
Charge level indication.
Indication of the noise level
LWA in dB.
Charge level indication.

Setup - Before Use:
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this
manual including all text under subheadings therein before set up or use of this product.
Note:For additional information regarding the parts listed in the
following pages, refer to Parts List and Diagram on page 22.
Functions
Chain
Tension Knob
Lock Knob
Front Handle
Rear
Handle Drive
Cover
Chain Guide Bar
Spiked Bumper
Saw Chain
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Chain Guide
Bar Sheath

Page 9U1CS27042 WWW.LITHELI.COM
Charging the Battery Pack
NOTE : The Battery Pack comespartly charged.
Charge the Battery Pack prior to first use, ideally at least 60minutes.
Rapid Battery Charger
Power Cord
with Plug
Battery
Pack
Connector
Charging
Status
LED – Red
Charging
Status
LED – Green
Always pull outthe PowerPlug of the Charger
from the mainsbefore removing or connecting the Battery Pack to the charger.
Nevercharge the Battery Pack when the ambient temperature isbelow 10 °C or above 40 °C.
Rest the Charger forat least 15 minutes between successive charging sessions.
If no Battery Pack is inserted into the Charger and the
charger is connected to mains,the Charging Status LED flashes green.
1 .
2.
3.
4.
Align the Battery Pack to the rails of the
Charger and slide it in. Ensure it clicks
noticeably in place.
Connect the Power Plug of the Charger with
the mains. The Charging Status LED lights
up red. The continuously lit green
Charging Status LED indicates
that the charging process is complete.
Disconnect the Power Plug of the
Charger from the mains and remove the
Battery Pack from the charger.
Attach the Battery Pack back to the
product (see “Installing and Removing
Battery Pack”).
Charging status LEDs
Green LED flashes
without battery pack Charger ready
Green LED lights up
with battery pack
Battery pack fully
charged
Red LED lights up with
battery pack Battery pack charging
Red and green LEDs
flashing Battery pack defect
Red and green LEDs
continuously lit
Battery pack too cold
or warm

Safety Device Explanation
1. Hand Guard-A guard that protects your hand
on the Front Handle from the Saw Chain.
2. Chain Brake-A mechanical braking device
designed to quickly stop the Chainsaw and
Chain in the event of kickback. If kickback
occurs, this safety feature is activated when
the operator’s hand strikes the Hand
Guard/Chain Brake Lever and pushes it
forward, stopping the Chain.
3. Switch Lockout-A movable stop that prevents
the unintentional operation of the Trigger until
manually activated.
4. Low-Kickback Chain-A Chain that complies
with the kickback performance requirements
of ANSI B175.1-1991 when tested on a
representative sample of chainsaws.
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Battery Pack
Release
Button
Battery Level
Indication Lights
Battery
Level Button
Checking the Battery Charging Level
Press the Battery Level Button
to check the charging level of the Battery Pack. The charging level
will be shown on the Battery Level Indication Lights.
Charge the Battery Pack before
operation when it is at 25% or low battery charging level.
NOTE :
Charging level
Charging level too low
Between 5% and 50%.
Between 50% and 80%.
More than 80%.
LED status

E
Guide Bar and Saw Chain Installation and Adjustment
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION:
Make sure that the Trigger is in the off-position and remove the Battery Pack before performing any
procedure in this section.
Note: New Saw Chains often need to be tensioned several times during first use.
Check a new Saw Chain’s tension often when first using.
Follow the directions in the following sections for installing the Guide Bar and Saw Chain, for checking
and adjusting Saw Chain tension, and for replacing the Saw Chain when necessary.
Guide Bar/Saw Chain Installation
CAUTION! Wear heavy-duty work gloves when handling Saw Chain.
1. BEFORE FIRST USE: Soak Saw Chain in bar
and chain oil (purchased by yourself) overnight.
2. Loosen the Lock Knob and remove
the Drive Cover from the Saw.
3. Place the slotted end of the Chain Guide
Bar over the Guide Bar Bolt and insert
the Chain Tension Pin into the lower hole in
the Guide Bar. Refer to Figure B.
Figure B: Installing Guide Bar and Chain
4. Place the Saw Chain around the Sprocket and
over the Guide Bar. Make sure the Cutters of
the Saw Chain are facing away from the
Chainsaw along the top edge of the Guide Bar.
Fit the Chain links into the groove around the
Guide Bar.
CUTTERS MUST FACE IN
DIRECTION OF ROTATION
Tip of Bar
Cutter
Drivelink
Cutters Depth Gauge
Drive Links
5. Replace the Drive Cover and tighten the Lock
Knob so that the Cover is snug, but not tight.
Tension the Saw Chain following the steps in
Adjusting Saw Chain Tension on page 11.
Saw Guide Bar
Nose
Sprocket
Chain Guide Bar
Direction of Saw
Chain Cutters
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Guide
Bar Bolt
Chain Tension Pin

Checking Saw Chain Tension
1. Before using, check the Saw Chain tension.
2. While wearing heavy-duty gloves, use your index
finger and thumb to carefully grab the Saw Chain
in the middle section undertheChain GuideBar.
3. Pull the Saw Chain away from the Guide Bar.
4. The Saw Chain should snap back against
the Guide Bar. The Chain should fit snugly
in the groove of the Chain Guide Bar, yet you
should still be able to slide the chain along the
Chain Guide Bar by hand.
5. There should be no sagging between the Guide
Bar and Saw Chain on the underside of the Guide Bar. Figure C: Checking Saw Chain Tension
Adjusting Saw Chain Tension
1. Loosen the Lock Knob on the Drive Cover
several turns.
2. Turn the Chain Tension Knob clockwise to
increase chain tension and counterclockwise
to decrease tension.
3. Tighten the Lock Knob on the Drive Cover.
4. Check the Saw Chain tension again following
steps 2 through 5 under Checking Saw Chain
Tension above. If needed, repeat the adjusting
steps to achieve the correct tension.
Figure D: Adjusting Saw Chain Tension
Replacing the Saw Chain
1. Soak the new Saw Chain overnight in
Bar and Chain Oil (Buy it locally).
2. Loosen the Lock Knob on the Drive Cover,
then turn the Chain Tension Knob
counterclockwise until the Saw Chain is loose.
3. Unthread the Lock Knob and remove the Drive
Cover.
4. Push the Chain Guide Bar towards the
Sprocket to further loosen the Saw Chain.
5. Remove the Saw Chain from the Sprocket,
then the Guide Bar.
NOTE:Check the condition of the Sprocket when
replacing the Chain. The Sprocket should be
replaced if it shows signs of wear or is
damaged. If needed, have the Sprocket
replaced and the bearings greased by a
qualified technician.
NOTE: Check the condition of the Chain Guide Bar
when replacing the Chain. Refer to Chain Guide
Bar Care on page 19.
6. Flip the Chain Guide Bar over before mounting
the new Saw Chain. This will ensure that the
Chain Guide Bar wears evenly over time.
7. Place the new Saw Chain around the Sprocket
and over the Guide Bar. Make sure the Cutters
of the Saw Chain are facing away from the
Chainsaw along the top edge of the Guide Bar.
Fit the Chain links into the groove around the
Guide Bar.
8. Replace the Drive Cover and tighten the Lock
Knob so that the Cover is snug, but not tight.
Tension the Saw Chain following the steps in
Adjusting Saw Chain Tension above.
Lock Knob
Chain Tension Knob
Drive Cover
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A fully discharged Battery Pack will take
about 1 hour to fully charge.
Operating Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this
manual including all text under subheadings therein before set up or use of this product.
Charging Battery Pack
1. Place Battery Charger on a dry, flat,
fireproof surface indoors.
NOTE: Allow battery to cool completely before charging.
2. Examine Battery Pack. Do not charge a
cracked, open, or leaking Battery Pack, or
charge a non-recommended type of Battery
Pack.
3. Battery Pack is designed to fit this Charger
specifically. If Battery Pack does not fit
Charger properly, do not try to insert it. Do
not force Battery Pack into the Charger.
4. Plug Charger into a grounded, 120VAC, 60Hz
receptacle. The green LED will blink, showing
that power is supplied to the Charger.
5. Slide Battery Pack onto Charger. Red LED will
light continuously while charging.
NOTE:
NOTE: While charging, Battery Pack and Charger
may become warm to the touch and the Charger s
fan may come on. This is normal.
6. Green LED will light continuously when Battery
Pack is charged. Unplug Charger and remove
Battery Pack when finished.
7. Allow Battery Pack to cool completely before
use.
Installing and Removing Battery Pack
1. To install: Slide Battery Pack into slot on back
of Chainsaw until it clicks into place.
2. To remove: Press both Battery Pack Release
Buttons and pull Battery Pack out of slot.
Battery
Pack
Battery Pack
Release
Buttons
Figure E: Battery Pack
Page 13U1CS27042 WWW.LITHELI.COM

Workpiece and Work Area Set Up
1. Designate a work area that is clean and well lit.
The work area must not allow access by
children or pets to prevent distraction and
injury.
2. There must not be objects, such as utility lines,
nearby that will present a hazard while working.
3. A first-time user should, as a minimum practice, cut
logs onasaw-horse or cradle before cutting down
trees.
General Operating Instructions
1. Before first use and before each use thereafter,
remove the Oil Tank Cap. Inspect the Cap
Gasket for damage. Fill the oil reservoir to just
below fill plug with oil (not included). Then
replace the Oil Tank Cap. Oil is automatically
applied to the Saw Chain during operation.
2. Make sure that the Trigger is in the off-position,
then slide the Battery Pack into slot on back
of Chainsaw until it clicks into place.
3. Place the Hand Guard/Chain Brake Lever in
normal operating (disengaged) position by
pulling the Hand Guard back toward the
Handle. Refer to Figure F.
DISENGAGED ENGAGED
Figure F: Chain Brake
NOTE: The Chainsaw will not operateunless the Hand
Guard/ChainBrakeLeveris inthe disengaged position.
4. Grasp the Handles with both hands. Always
gripthe handle with the thumb and fingers
encircling the handle as shown in Figure G.
Figure G: Holding the Chainsaw
NOTE:Front Hand Guard not shown.
5. Stand in front of the wood to be cut
with your feet firmly in place.
6. Push the Lockout Switchtothe left or right, then
squeeze and hold the Trigger. WiththeChainsaw
running, you may releasepressure on the Lockout
Switch. Releasing the Trigger will stop themotor.
NOTE: The Trigger cannot be activated
unless the Lockout Switch is depressed.
DANGER!To prevent serious injury and death from
kickback: Do not touch the Guide BarNose to thewood.
7. When the Chainsaw reaches full speed, begin
cutting with a light, downward pressure against
the bottom mid-section of the Saw Chain. Allow
the Saw Chain to cut at its own rate. Applying
too much pressure can damage the tool.
DANGER! When cutting loose, round wood stock,
place the wood stock on a sawhorse, in a cradle,
or use a timberjack (all purchased by yourself)
to avoid grabbing and throw back.
8. To prevent accidents, turn off the tool,
remove its Battery Pack, and place the
Hand Guard/Chain Brake Lever forward
in its engaged position after use.
9. When the Saw has cooled completely, clean
thoroughly and cover the Chain Guide Bar
with the Chain Guide Bar Sheath. Store the
tool indoors out of children’s reach.
Hand
Chain Brake
Lever
USE THIS GRIP
THUMB BELOW
HANDLE
Page 14 U1CS27042
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NANCE
Instructions concerning the proper techniques for
basic felling, limbing, and cross-cutting
Felling a Tree
When bucking and felling operations are being
performed by two or more persons at the same time, the
felling operations should be separated from the bucking
operation by a distance of at least twice the height of the
tree being felled. Trees should not be felled in a manner
that would endanger any person, strike any utility line or
cause any property damage. If the tree does make contact
with any utility line, the company should be notified
immediately.
The chainsaw operator should keep on the
uphill side of the terrain as the tree is likely to
roll or slide downhill after it is felled.
An escape path should be planned and cleared as
necessary before cuts are started. The escape path
should extend back and diagonally to the rear of the
expected line of fall as illustrated in Figure H.
Before felling is started, consider the natural lean
of the tree, the location of larger branches and the
wind direction to judge which way the tree will fall.
staples and wire from the tree.
Remove dirt, stones, loose bark, nails,
staples and wire from the tree.
Felling Direction
Danger Zone
Danger Zone
Escape
Route
Escape
Route
Figure H: Escape Routes
E
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U1CS27042 WWW.LITHELI.COM

MAINTE
Notching Undercut
Make the notch 1/3 the diameter of the tree,
perpendicular to the direction of falls as illustrated
in Figure I. Make the lower horizontal notching cut
first. This will help to avoid pinching either the saw
chain or the guide bar when the second notch is
being made.
Felling Back Cut
Make the felling back cut at least 2 inches higher
than the horizontal notching cut as illustrated in
Figure I. Keep the felling back cut parallel to the
horizontal notching cut. Make the felling back cut
so enough wood is left to act as a hinge. The hinge
wood keeps the tree from twisting and falling in the
wrong direction. Do not cut through the hinge.
As the felling gets close to the hinge, the tree
should begin to fall. If there is any chance that the
tree may not fall in desired direction or it may rock
back and bind the saw chain, stop cutting before
the felling back cut is complete and use wedges
of wood, plastic or aluminium to open the cut and
drop the tree along the desired line of fall.
When the tree begins to fall remove the chainsaw
from the cut, stop the motor, put the chainsaw down,
then use the retreat path planned. Be alert for
overhead limbs falling and watch your footing.
Direction of Fall
2"
2"
Felling Back Cut
Hinge
Notch
Figure I: Undercutting
Limbing a Tree
Limbing is removing the branches from a fallen tree. When limbing leave larger lower limbs
to support the log off the ground. Remove the small limbs in one cut as illustrated in Figure J.
Branches under tension should be cut from the bottom up to avoid binding the chainsaw.
Limb Cut
Keep work off ground leave support limbs until log is cut
Figure J: Tree Limbing
Page 16 U1CS27042
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Bucking a Log
Bucking is cutting a log into lengths. It is important to make sure your footing is firm and your
weight is evenly distributed on both feet. When possible, the log should be raised and supported
by the use of limbs, logs or chocks. Follow the simple directions for easy cutting.When the log is
supported along its entire length as illustrated in Figure K, it is cut from the top (overbuck).
Cut from top (overbuck) avoid cutting earth
Figure K: Log Supported Along the Entire Length
When the log is supported on one end, as illustrated in Figure L, cut 1/3 the diameter from the
underside (underbuck).
Then make the finished cut by overbucking to meet the first cut.
2nd
to meet 1st cut (to avoid pinching)
1st
to avoid splintering
Figure L: Log Supported One End
Page 17U1CS27042 WWW.LITHELI.COM

MAINTE
Bucking a Log (continued)
When the log is supported on both ends, as illustrated in Figure M, cut 1/3 the diameter from the top
(overbuck).Then make the finished cut by underbucking the lower 2/3 to meet the first cut.
2nd cut underbuck (2/3diameter)
1teemot st cut (to avoid pinching)
1st
cut overbuck (1/3diameter)
to avoid splintering
Figure M: Log Supported Both Ends
When bucking on a slope always stand on the
uphill side of the log, as illustrated in Figure N.
When “cutting through”, to maintain complete
control release the cutting pressure near the
end of the cut without relaxing your grip on
the chainsaw handles. Don’t let the chain
contact the ground. After completing the
cut, wait for the saw chain to stop before
you move the chainsaw. Always stop the
motor before moving from tree to tree.
Stand on uphill side when cutting
because log may roll
Figure N: Bucking a Log
Page 18 U1CS27042
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Maintenance and Servicing
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION: Make sure that the Trigger is in the
TO PREVENT SERIOUS INJURY FROM TOOL FAILURE:
Cleaning, Maintenance, and Lubrication
1. BEFORE EACH USE, inspect the general
condition of the tool. Check for:
• leaking, swollen, or cracked battery pack
• loose hardware
• misalignment or binding of moving parts
• cracked or broken parts
• dull or damaged saw chain
• proper chain brake operation
• any other condition that may
affect its safe operation.
2. BEFORE FIRST USE AND BEFORE EACH
USE THEREAFTER, make sure the Oil Tank
is filled with oil (not included). Refer to
Specifications Chart on page 6 for oil type.
3. adjust
the Saw Chain tension as described under
Adjusting Saw Chain Tension on page 11.
4. PERIODICALLY OR WHEN REPLACING SAW
turn the Chain GuideBar over todistribute
the wear on it. Replace the GuideBar when bent,
cracked, or when the Saw Chain moves excessively
from sidetoside on the Guide Bar due to wear.
Refer to Chain GuideBar Care onpage 19.
5. wipe the outside surface
of the Chainsaw with a clean, dry cloth. If
necessary use a mild detergent. Do not use
solvents. Do not immerse this tool in liquid.
6. Li-Ion BATTERY MUST BE RECYCLED OR
DISPOSED OF PROPERLY. Do not short,
incinerate or open battery.
7. Disconnect Battery Pack and store Battery Pack,
Charger, and tool in dry, indoor area out of reach
of children and away from metal objects (i.e.,
paperclips, coins) to prevent shorting.
Sharpening/Replacing the Saw Chain
W!GNINRAW
1. For smooth and safe operation,
alwayskeepthe Saw Chain cutters sharp.
2. Have the cutters sharpened by a qualified technician
when you notice any of the following symptoms:
a. The sawdust becomes powder-like.
b. You can’t make the cut without extra force.
c. The Chainsaw does not cut straight.
d. Vibration increases.
3. A Saw Chain that is damaged or too worn
to be restored to a useable condition by
sharpening will need to be replaced. Refer
to Replacing the Saw Chain on page 11.
Page 19
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This maintenance schedule is intended solely as a general guide. If performance decreases or if
equipment operates unusually, check systems immediately. The maintenance needs of each piece of
equipment will differ depending on factors such as duty cycle, temperature, air quality, and other factors.
If you have doubts about your ability to safely service this tool, have a qualified technician service the
equipment instead.
Chain Guide Bar Care
1. Remove the Chain Guide Bar
periodically to clean and lubricate.
2. Deburr rails of Guide Bar as needed.
Use a flat file to make side edges square.
3. Remove sawdust and sap from the
Bar Groove using a Guide Bar cleaning
tool (purchased by yourself), then lubricate
the nose sprocket at the ports with grease.
Oil Holes
Groove
Grease Port
Figure O: Cleaning and Lubricating Guide Bar
4. Reverse the Guide Bar when replacing the
Saw Chain to prevent uneven wear.
5. The rails of the Guide Bar groove shoalways
be parallel to each other. Place a ruler along
the surface of the Guide Bar and Saw Chain.
If there is a gap, the bar is normal.
Straight
Guide Bar
Ruler
Rail
Saw
Chain
Gap
Figure P: Normal Guide Bar
If the ruler is flush with the Guide Bar and
Saw Chain, or the Chain tilts to one side,
then the Bar is worn and needs to be replaced.
Ruler
Worn
Guide Bar
Tilting Saw
Chain
Figure Q: Worn Guide Bar
Cleaning, Maintenance, and Lubrication Schedule
NOTE :
Periodic Maintenance or When Replacing Saw Chain:
a. Clean and lubricate Chain
Guide Bar and turn over.
b. Deburr Guide Bar as needed.
c. Check Chain Sprocket for wear or damage.
Monthly Maintenance:
Clean Chain Oil Tank.
If Worn or Damaged:
a. Replace Chain Guide Bar if it becomes
worn, bent or damaged.
b. Sharpen or replace Saw Chain.
Page 20 U1CS27042
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