Voltask CS-40A User manual

2 x 20V 14-Inch
Brushless Cordless
Chainsaw
CS-40A

Thank you for purchasing our Voltask 2 x 20 V 14-inch brushless cordless chainsaw. This
chainsaw has beenengineered and manufactured to meet Voltask's high standards in product
reliability, ease of use and safety. When properly used, it will give you years of powerful
trouble-free performance.
To reduce risk of injury, the user should read and understand this user
manual before using this product.
Save this user manual for future reference.
If you sell or pass this device on, you must also hand over these
operating instructions.
WARNING
Webside: www.voltask.com Email: [email protected]
FB: @voltasktools IG: @voltasktools

CONTENTS
INTRODUCTION 01
01
02
03
08
09
10
11
14
18
21
22
22
23
24
SYMBOLS
GENERAL SAFETY INSTRUCTIONS
PACKAGE CONTENTS
PRODUCT OVERVIEW
TECHNICAL SPECIFICATIONS
ASSEMBLY
OPERATING INSTRUCTIONS
BASIC WORK TECHNIQUE
CLEANING AND MAINTENANCE
STORAGE AND TRANSPORT
TROUBLESHOOTING
DISPOSAL
CHARGER INDICATORS
WARRANTY

-This device should only be used with the approved original chain for cutting wood.
-Do not use this power tool at temperatures below 14 F(-10"C).
-This power tool may only be used with the accessory parts listed under accessories.
-This product is not intended for commercial use, Generally acknowledged accident prevention
regulations and endorsed safety instructions must be observed.
-Only perform work described in these instructions for use. Any other use is improper.
-The manufacturer will not assume responsibility for damage resulting from such use.
INTRODUCTION
PACKAGE CONTENTS
INTRODUCTION-PACKAGE CONTENTS 01
Main Unit × 1 Guide Bar × 1 Saw Chain × 1 Battery Pack × 2
Battery Charger
× 1
User Manual × 1 Warranty card
× 1
Troubleshooting
× 1

-These symbols identify the required personal protective equipment:
Avoid clothing that could get caught on something:
-Wear only close-fitting clothing
-Do not wear jewelry
-If you have long hair, wear a hair net
SYMBOLS
SYMBOLS 02
DANGER! Direct danger to life and risk of injury! Directly dangerous situation that
may lead to death or severe injuries.
Hand protection: protective chainsaw gloves
Eye protection: wrap-around goggles/protective visor on the helmet
Ear protection: earplugs/earmuffs
Head protection: safety helmet with visor
Foot protection: safety shoes with gripping soles, steel caps, and leg protection
Clothing: Wear dose-fitting work clothes
CAUTIONI Possible risk of injury! Dangerous situation that may lead to injuries.
NOTICE! Risk of damage to the device! Situation that may lead to property damage.
Note: Information to help you reach a better understanding of the processes involved.
WARNING! Probable danger to life and risk of injury! Generally dangerous
situation that may lead to death or severe injuries.

GENERAL SAFETY INSTRUCTIONS 03
GENERAL SAFETY INSTRUCTIONS
To safely operate this device, the user must have read and understood these instructions for use
before using the device for the first time.If you sell or pass this device on, you must also hand over
these operating instructions.
● 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.
● Keep work area clean and well lit. Cluttered and dark areas may cause accidents.
● 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.
● Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
● Stay alert, watch what you are doing, and use common sense when operating a power tool. Do not use a
power tool when you are tired or under the influence of drugs, alcohol or medication. A moment of inattention
while operating power tools may result in serious personal injury.
● Use personal protective equipment. Always wear eye protection devices. Protective equipment such as
dust masks, non-skid safety shoes, hard hats, or hearing protection used for appropriate conditions will
reduce personal injuries.
● Prevent unintentional startup. Ensure the switch is in the "off" position before connecting to a power source
and/or battery pack, picking up, or carrying this tool. Carrying power tools with your finger on the switch or
energizing power tools that have the switch on may cause accidents.
● Remove any adjusting key or wrench before turning the power tool on a wrench or key left attached to
a rotating part of the power tool may result in personal injury.
● Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool
in unexpected situations.
● 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.
● If devices are provided for the connection of dust extraction and collection facilities, ensure these are
connected and properly used. Use of these devices can reduce dust-related hazards.
● 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.
● 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.
● Disconnect the plug from the power source and/or the battery pack from the power tool before making any
adjustments, changing accessories, or storing power tools, Such preventive safety measures reduce the risk
of starting the power tool accidentally.
WARNING! Read all safety warning and instructions. Failure to follow these warnings and instructions
may result in electric shock, fire, and/or serious injury.
General Power Tool Safety Warnings
Work Area Safety
Personal Safety
Power Tool use and Care

GENERAL SAFETY INSTRUCTIONS 04
● Store idle power tools out of reach from 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.
● Maintain power tools. Check for misalignment or binding of moving parts, broken parts, and any other
condition that may affect the power tools operation. If damaged, have the power tool repaired before use.
Many accidents are caused by poorly maintained power tool.
● Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely
to bind and are easier to control.
● Use the power tools, accessories, and tool bits etc in accordance with these instructions, and take 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.
● 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.
● Use power tools only with specifically designated battery packs. Use of any other battery packs may create
a risk of injury and fire.
● When the battery pack is not in use, keep it away from other metal objects such as 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.
● Do not disassemble the rechargeable battery. The rechargeable battery can be damaged by improper
handling.
● Do not expose the rechargeable battery to heat, fire, water, or humidity, as this can create an explosion.
● Vapors may escape in case of damage or improper use of the rechargeable battery. Provide good ventilation
and seek medical assistance in case any symptoms occur. These vapors can irritate your respiratory tract
and cause llness.
● Never attempt to charge non-rechargeable batteries, as there is danger of fire and explosion.
● The rechargeable battery may only be used in conjunction with this electrical tool. Other electrical tools can
overload and damage the rechargeable battery.
● Only chargers approved by the manufacturer with the values stated on the type plate of the rechargeable
battery may be used. The use of deviating chargers can pose the risk of injuries and material damage
caused by exploding batteries.
● Keep the charger away from rain, water, and other wet conditions. The risk of electric water penetrates a
charging device.
● Keep the charging device clean Soiling can create danger of electric shock.
● Check the charging device, cable, and plug before each use. Do not use the charging device if you detect
any damage.
● Do not open the charging device by yourself; only have it repaired by qualified professionals and only with
original spare parts. Damaged charging devices, cables, and plugs increase the risk of electric shock.
● Do not use the charging device on easily flammable items (e.g. paper, textiles etc. )or in combustible
atmospheres. There is a danger of fire due to the heating of the charging device during the charging process.
Have your power tool serviced by a qualified repair person using only identical replacement parts. This will
ensure that the safety of this power tool is maintained.
Battery Tool Use and Care
Safety Information for Chargers
Service

● Keep all body parts away from the chain when the chainsaw is operating. Before you start the chainsaw,
make sure the chain is not in contact with anything. A moment of inattention while operating this chainsaw
may cause entanglement of your clothing or body with the chain.
● Always hold the chainsaw with your right hand on the rear handle and your left hand on the front handle.
Holding the chainsaw with a reversed hand configuration increases the risk of personal injury and should
never be done.
● Hold the power tool by the insulated gripping surfaces only, as 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.
● Wear safety glasses and hearing protection devices. Further protective equipment for head, hands, legs, and
feet is also recommended. Adequate protective clothing will reduce personal injury from flying debris or
accidental contact with the saw chain.
● Do not operate a chainsaw in a tree. Operation of a chainsaw while in a tree may result in personal injury.
● Always keep proper footing and operate the chainsaw only when standing on a fixed, secure, level surface.
Slippery or unstable surfaces such as ladders may cause a loss of balance or control of the chainsaw.
● When cutting a limb that is under tension, be alert for spring back. When the tension in the wood fibers is
released, the spring-loaded limb may strike the operator and/or throw the chainsaw out of control.
● 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.
● Carry the chainsaw by the front handle with the chainsaw switched off and away from your body. When
transporting or storing the chainsaw, always attach the guide bar cover. Proper handling of the chainsaw will
reduce the likelihood of accidental contact with the moving chainsaw.
● Follow instructions for lubricating, chain tensioning, and changing accessories. An improperly tensioned or
lubricated chain may either break or increase the chance of kickback.
● Keep handles dry, clean, and free from oil and grease Greasy, oily handles are slippery and can cause loss
of control.
● Cut wood only. Do not use the chainsaw for purposes not intended. For example: do not use this chainsaw
for cutting plastic, masonry, or non-wood building materials. Use of the chainsaw for operations different than
intended could result in a hazardous situation.
● Before starting the device, you must ensure that the chain is free of debris.
● Always cut at full motor power and keep the speed constant.
● 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 these reactions may cause you to lose control of the saw, which could result in serious personal
injury. Do not rely exclusively upon the safety devices built into your saw.
● As a chainsaw user, you should take several 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 the proper precautions given below：
-Maintain a firm grip, with thumbs and fingers encircling the chainsaw handles, with both hands on the saw
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 chainsaw.
GENERAL SAFETY INSTRUCTIONS 05
Chainsaw Safety Warnings
Causes and Operator Prevention of Kickback

-Do not overreach and do not cut above shoulder height. This helps prevent unintended tip contact and
enables better control of the chainsaw in unexpected situations.
-Only use replacement bars and chains specified by the manufacturer. Incorrect replacement bars and
chains may cause chain breakage and/or kickback.
-Follow the manufacturer’s sharpening and maintenance instructions for the chainsaw. Decreasing the depth
gauge height can lead to increased kickback.
● It is recommended that the user is instructed by a qualified specialist with regard to the operation of the
chainsaw and the use of safety equipment based on practical examples prior to first commissioning.
● This product is not intended to be used by persons (including children)or who are limited in their physical,
sensory, or mental capacities, or who lack experience and/or knowledge of the product.
● Children should be supervised to ensure that they do not use this product as a toy.
● Children and adolescents are not allowed to operate this chainsaw. The same applies to persons who are
not or not well enough acquainted with the chainsaw.
● The operating instructions should always be within easy reach.
● Persons suffering from fatigue or who are not physically fit must not operate the chainsaw.
● Keep the handles dry and free from grease. Slippery handles can cause accidents.
● Keep a firm hold of the electrical tool with both hands while working and make sure you are standing firmly.
The electrical tool is safest when using two hands.
● Do not leave tools, objects, or cabling laying around in the vicinity of the device. If you stumble, you may
injure yourself on the power tool.
● Make sure that all safety facilities and handles are mounted when using the product.
● Never attempt to operate an incompletely mounted product or a product with third-party modifications.
● Wait until the electrical tool has come to a standstill before setting it down.
● Do not use any accessory that has not been provided and recommended by the manufacturer specially for
this electrical tool. Just because the accessories can be fixed on your electrical tool does not mean that they
are secured or safe to use.
● Remember that moving parts may also be located behind ventilation and venting slots.
● The fuse must be a residual current circuit breaker with a measured residual current of no more than 30 mA.
● Lay out cabling such that it cannot become caught in branches or similar during sawing.
● Never work without the bump stop. Never remove the bump stop.
● Beginners should practice cutting round wood logs positioned on a saw block or on a frame.
● Symbols appearing on your product may not be removed or covered. Information on the product that are no
longer legible must be replaced immediately.
GENERAL SAFETY INSTRUCTIONS 06
Additional Safety Information
GENERAL SAFETY INSTRUCTIONS 06
Be careful when handling this device! Observe all safety instructions in the manual for use.
Read and observe operating instructions before commissioning.
Do not expose this machine to moisture.
Area with danger of kickback.

If you notice any of the following symptoms: numbness of body parts, loss of sense of feeling, itching, pins and
needles, pain, or change in skin color, stop working and seek medical attention immediately.
The vibration values specified in the technical data represent the main uses of the device. The actual existing
vibrations during use may deviate from these as a result of the following factors:
-Incorrect use of the product.
-Unsuitable tools inserted.
-Unsuitable material.
-Insufficient maintenance.
You can reduce these risks considerably by following the tips below:
-Maintain the device in accordance with the instructions in the operating manual.
-Avoid working at low temperatures.
-When it is cold, make sure your body, your hands in particular, are kept warm.
-Take regular breaks and move your hands at the same time to promote circulation.
GENERAL SAFETY INSTRUCTIONS 07
Always hold the device firmly in both hands.
Always maintain a sufficiently safe distance.
Only recharge the battery pack indoors.
Do not dispose of the battery pack in water
Do not burn the battery pack.
Do not expose the battery pack to sunlight or increased temperatures.
Length of the guide bar.
Risks Caused by vibration
CAUTION! Risk of injury due to vibration! Vibration may, in particular for persons with circulation problems,
cause damage to blood vessels and/or nerves.

PRODUCT OVERVIEW 08
PRODUCT OVERVIEW
① Rear handle
② Oil tank cover
③ Front hand guard (trigger for chain brake)
④ Saw chain
⑤ Guide bar
⑥ Chain tensioning screw
⑦ Quick locking device (for guide bar)
⑧ Chain wheel guard
⑨ Oil level window
⑩ Rear hand guard
⑪Safety lock
⑫ ON/ OFF switch
⑬ Battery pack
⑭ Front handle
⑮ Battery indicators
⑯ Push button for battery indicator
⑰ Push lock button
⑱ Charger indicator
⑲ Battery charger
⑳ Protective cover

TECHNICAL SPECIFICATIONS 09
TECHNICAL SPECIFICATIONS
Chainsaw
Idling speed
Guide bar length
Cutting speed
Oil tank capacity
Noise pressure level
Weight (including battery and charger)
8000 r/min
14 in (335mm)
15 m/s
6 oz (180ml)
<99dB
15.7 lbs (7.12kg)
Battery Charger
Rated voltage
Charging voltage
Charging current
Protection class
120V, 60Hz
2 x 20V
2 x 2.4A
Battery Pack
Battery pack type
Rated voltage
Capacity
Charging time
Li-ion
4000 mAh
120 minutes
Maximum: 20V
Nominal: 18V

CHARGER INDICATORS 10
CHARGER INDICATORS

ASSEMBLY 11
ASSEMBLY
DANGER! Risk of injury during operation! Improperly mounted parts can cause severe and even fatal
injuries when using the device! This device may only be used if all parts are mounted completely and tightly and no
part is damaged.
WARNING! Risk of injury! An improperly mounted saw chain causes uncontrolled cutting behavior of the
device. When assembling the chain, heed the prescribed running direction.
Note: When attaching the saw chain, note the
correct position of the guide groove on the guide
bar.
● Read this whole chapter before you assemble the parts.
● Assemble the parts carefully and completely.
● Use tools when their use is suggested.
1. Release the chain brake (move the front hand guard back and engage).
2. Unlock and undo the quick locking device, then remove the chain wheel guard.
3. Route the saw chain around the guide bar.
Verify the correct location inside the guiding
groove. Pay attention to the chains correct
direction of rotation: the direction in which the
arrow points on the chain must match the direction
marked on the guide bar.
4. Hold the saw chain in the correct position on the
bar and place the saw chain around the gear
(chain wheel) . Fit the bar flush against the
mounting surface so that the chain dowel spin
fits in the long slot of the bar. Note: If the guide
bar is broken, a replacement can be purchased
from a local vendor.
CAUTION! Risk of injury due to cuts! The teeth on this saw chain are very sharp. Protective gloves must be
worn for all work on the chain
Assembling the Guide Bar and Saw Chain

ASSEMBLY 12
1. Slightly lift up on the tip of the guide bar.
2. Check if the saw chain runs smoothly by turning it manually.
3. Turn the tensioning screw clockwise until on the underside of the guide bar.
4. Tighten and lock the quick locking device.
During the run-in time, re-tension the saw chain and guide bar after a maximum of 5 cuts.
5. Attach the chain wheel guard.
6. Gently tighten the quick locking device clockwise.
Adjusting Chain Tension
Letting the Saw Chain Run in
The saw chain is tensioned correctly if it lies close against the underside of the guide bar and can be moved
easily by hand. Readjust the tension of the saw chain when necessary (see Re-tensioning the Saw Chain
section). Make sure there are no gaps between the saw chain and guide groove.
Checking the Tensioning of the Saw Chain
The device should not be used without sufficient chain lubrication. Insufficient lubrication reduces the service
life of this device
1. Check the oil quantity in the tank.
2. Start the device.
3. Hold the running saw chain approx. 5.9 in (15 cm) above a suitable surface for a short time (15 s). If there is
sufficient chain lubrication, the oil spraying off of the saw chain will form a slight trail.
Checking the Chain Lubrication

ASSEMBLY 13
The chain brake ensures immediate blocking of the saw chain in case of kickback. Before beginning work with
the device, it should be checked to ensure that it is functioning correctly.
1. Set the device on the ground.
2. Start the device.
3. Tip the front hand guard forwards. The chain should stop immediately.
4. If the chain brake is not working correctly, contact a service partner immediately.
1. Lay the device down in a secure position with the oil tank cover upwards.
2. Before opening, clean the oil tank cover if necessary.
3. Remove the oil tank cover by rotating anticlockwise.
4. Carefully fill up with saw chain oil. Do not spill. If you do spill any saw chain oil, be sure to wipe it up.
5. Read the oil level at the oil level window.
6. Attach the oil tank cover by rotating clockwise.
Note: This device contains an automatic oil pump that services the chain. The remaining oil level can
be checked through the oil level window.
Checking the Chain Brake
Chain oiling
NOTICE! Environmental damage! Since the saw
chain oil can penetrate the environment during
operation, only biologically degradable vegetable-based
saw chain oils should be used.

OPERATING INSTRUCTIONS 14
The device has several pieces of safety equipment that help reduce the risk of injury when working：
1. Bump Stop
The bump stop enables the motor block to be
secured to the wood when using pull saws.
Uncontrolled kickback of the saw is thus made more
difficult. This process also exerts pressure on the
saw chain due to the generated leverage.
2. Chain Catcher
The chain catcher serves to catch a torn saw chain
or a chain that has jumped off the guide bar.
Through regular maintenance of the guide bar and
correct and regular tensioning of the saw chain,
accidents of this type can be prevented.
3. Rear Hand Guard
The rear hand guard serves to protect hands against
a jumped chain and thrown branches and twigs.
OPERATING INSTRUCTIONS
Safety Equipment
Charging the Battery Pack
WARNING! Risk of injury! Comply with all safety instructions when handling rechargeable devices.
NOTICE! Risk of damage to the unit! Due to the high operating current, the unit should only be operated
with batteries that have a capacity of at least 4 Ah.
NOTICE! Risk of damage to the unit! Do not allow the battery pack to fully discharge.
Note: If the battery is fully charged, the charger will automatically switch over to the maintenance charge function.
The battery can thus safely remain in the charger indefinitely.

OPERATING INSTRUCTIONS 15
The battery pack must be charged prior to the first startup.
1. Press the push lock button and remove the
battery from the device.
3. Plug the charger into the power supply. The charging status is displayed by the charger indicators.
4. Insert the battery pack into the device and make sure it clicks into place correctly.
-Check all parts for a firm, tight fit.
-Check whether there are visible defects: broken parts, cracks, etc.
-Check the rear hand guard for damage.
-Check the switch-on safety lock and start button to ensure they are functioning correctly
-Check whether all handles are free from oil.
-Check the chain catcher for damage.
-Check the device for correct chain tensioning.
-Check the chain brake to ensure it is functioning correctly.
● Press the push button for battery indicator.
● The remaining battery capacity is indicated by the 4 LED lights. Battery capacity indicator is shown below:
LEDs on the Battery
All 4 LEDs are lit. The battery is fully charged.
1,2 or 3 LED (s)are lit. The battery has adequate remaining power.
1 LED blinks. The battery is empty. Please recharge the battery.
All LEDs blink. The battery pack is too hot (e. g. due to direct sunshine or
prolonged use) or too cold (below32°F/0°C). ln this condition, do not
use or charge the battery pack. Make sure the battery temperature is
between 40F (4°C) and 104°F(40°C).
Battery Status
2. Insert the battery pack into the charger.
Checking the Remaining Capacity of the Battery
Check Before Starting
DANGER! Risk of injury! This device must only be used if no faults are found. If any part of this defective, it
must be replaced before the next use. Check the safety equipment and the working condition of the device.

OPERATING INSTRUCTIONS 16
-Hold the device firmly with both hands.
-The hand guard must be folded towards the back.
-Switching on: press safety lock and ON/OFF switch simultaneously.
-Switching off: release on/oFF switch.
Before use, sufficiently familiarize yourself with the sawing technique for this chainsaw. You will find information
about this in the trade literature. We recommend that you attend suitable training sessions. The notes here
serve only as a complement.
-Stand with both legs securely on the ground.
-Heed obstacles in the work area.
-While you are working, always hold the device firmly with both hands(with the left hand on the front handle
and the right hand on the rear handle balanced in a secure position).
-Search the work area and remove objects which could be in your way.
-When you begin your work, check the safety of the device(see Check Before Starting).
-Hold the device in both hands as instructed.
Switching On/off
Correct Posture
How to Saw Correctly
Note: The device will turn on only when both the safety lock and ON/OFF switch are both engaged.
After it is switched on, the safety lock can be released The ON/OFF switch needs to be held down for
the device to operate.
DANGER! Risk of injury! Never work on unstable surfaces. Never work above shoulder height. Never work
while standing on a ladder. Do not work while bent too far forward. Only use this device in favorable weather and
site conditions.
DANGER! Risk of injury! Always turn the motor off before you set this device down.

OPERATING INSTRUCTIONS 17
Kickback occurs if the upper edge or tip of the guide bar strikes wood or other hard objects. The device is
thrown with high energy back and forth, which can cause extremely severe injuries.
Risk of kickback
DANGER! Risk of injury! When working with this device, dangerous kickback may occur. Seve even fatal
injuries can result. Before beginning work with this device, the chain brake must be checked to ensure that it is
functioning correctly.
● Avoid letting the tip of the guide bar touch wood or other hard objects(depicted below).
● In order to reduce the risk of injury in case of kickback, the device is equipped with a chain brake which is
triggered automatically on impact and will stop the saw chain immediately.
● For safety reasons, the functionality of the chain brake must be checked each time before the device is used
(See Checking the Chain Brake).
● With less strong kickback, the chain brake may not be triggered automatically. For this reason, it Is important
that the device be held firmly with both hands.
● Only careful and correct working methods can reliably reduce the risk of kickback.