Bauer 19112C-B Assembly instructions

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Email our technical support at: [email protected]
19112C-B
CORDLESS
COMPACT CHAINSAW
64940
For Maximum Performance,
Use 3.0 Amp Hour Battery
or Greater.
(Sold Separately)
20v LITHIUM-ION
Owner’s Manual & Safety Instructions
Save This 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. 23g
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1‑888‑866‑5797 as soon as possible.
Copyright©2023 by Harbor Freight Tools®. 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 Harbor Freight Tools.
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.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

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SAFETY OPERATION MAINTENANCESETUP
Table of Contents
Safety ......................................................... 2
Specifications ............................................. 8
Setup .......................................................... 8
Operation................................................... 10
Maintenance.............................................. 18
Parts List and Diagram.............................. 22
Warranty .................................................... 24
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.
Indicates a hazardous situation which, if not avoided,
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.
Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The term ″power tool″ in the warnings refers to your battery-operated (cordless) power tool.
1. Work area safety
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
flammable liquids, gases or dust. Power tools
create sparks which may ignite 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
Do not expose power tools to rain or wet
conditions. Water entering a power tool
will increase 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 influence of
drugs, alcohol or medication. A moment
of inattention while operating power tools
may result in serious personal injury.

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SAFETYOPERATIONMAINTENANCE SETUP
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 starting. Ensure the
switch is in the off-position before connecting
to power source and/or battery pack, picking
up or carrying the tool. Carrying power tools
with your finger on the switch or energizing 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 part of the
power tool may result in personal injury.
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 jewelry. Keep your hair, clothing
and gloves away from moving parts.
Loose clothes, jewelry or long hair
can be caught in moving parts.
g. Do not let familiarity gained from frequent
use of tools allow you to become
complacent and ignore tool safety
principles. A careless action can cause
severe injury within a fraction of a second.
h. 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.
i. Do not leave the tool unattended when the
Battery Pack is connected. Turn off the tool,
and remove the Battery Pack before leaving.
j. This product is not a toy.
Keep it out of reach of children.
k. 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 sense and caution are
factors which cannot be built into this product,
but must be supplied by the operator.
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 remove the battery pack,
if detachable, 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.
d. 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.
e. Maintain power tools and accessories.
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.
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 different from those
intended could result in a hazardous situation.
h. Keep handles and grasping surfaces
dry, clean and free from oil and grease.
Slippery handles and grasping surfaces
do not allow for safe handling and control
of the tool in unexpected situations.
5. Service
a. Have your power tool serviced by a
qualified repair person using only identical
replacement parts. This will ensure that
the safety of the power tool is maintained.
b. Never service damaged BATTERY packs.
Service of BATTERY packs should
only be performed by the manufacturer
or authorized service providers.
c. Maintain labels and nameplates on the tool.
These carry important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.

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SAFETY OPERATION MAINTENANCESETUP
6. General Chain Saw Safety Warnings
a. 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.
b. 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.
c. Hold the chain saw 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.
d. Wear eye protection. Further protective
equipment for hearing, head, hands, legs and
feet is recommended. Adequate protective
clothing will reduce personal injury by flying
debris or accidental contact with the saw chain.
e. Do not operate a chain saw in a tree, on
a ladder, from a rooftop, or any unstable
support. Operation of a chain saw while
up in a tree may result in personal injury.
f. 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.
g. 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.
h. 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.
i. 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 fit the guide
bar cover. Proper handling of the chain
saw will reduce the likelihood of accidental
contact with the moving saw chain.
j. Follow instructions for lubricating, chain
tensioning and changing the bar and chain.
Improperly tensioned or lubricated chain may
either break or increase the chance for kickback.
k. Cut wood only. Do not use chain saw for
purposes not intended. For example: do
not use chain saw for cutting metal, plastic,
masonry or non-wood building materials.
Use of the chain saw for operations different than
intended could result in a hazardous situation.
l. Do not attempt to fell a tree until you have
an understanding of the risks and how to
avoid them. Serious injury could occur to the
operator or bystanders while felling a tree.
m. 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.

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SAFETYOPERATIONMAINTENANCE SETUP
7. 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 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
chain saw 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
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.
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 chain
saw in 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
the saw chain. Decreasing the depth gauge
height can lead to increased kickback.
8. Battery tool use and care
a. Prevent unintentional starting. Ensure the
switch is in the off-position before connecting
to battery pack, picking up or carrying the
power tool. Carrying the power tool with your
finger on the switch or energizing power tool
that have the switch on invites accidents.
b. Disconnect the battery pack from the
power tool before making any adjustments,
changing accessories, or storing power
tool. Such preventive safety measures reduce
the risk of starting the power tool accidentally.
c. 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.
d. Use power tools only with specifically
designated battery packs. Use of any other
battery packs may create a risk of injury and fire.
e. 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.
f. Under abusive conditions, liquid may 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.
g. Do not use a battery pack or power tool that
is damaged or modified. Damaged or modified
batteries may exhibit unpredictable behavior
resulting in fire, explosion or risk of injury.
h. Do not expose a battery pack or power
tool to fire or excessive temperature.
Exposure to fire or temperature above
140°F may cause explosion.
i. Follow all charging instructions and do
not charge the battery pack or power tool
outside of the temperature range specified
in the instructions. Charging improperly or at
temperatures outside of the specified range may
damage the battery and increase the risk of fire.
j. Have servicing performed by a qualified
repair person using only identical
replacement parts. This will ensure that
the safety of the product is maintained.
k. Do not modify or attempt to repair the power
tool or the battery pack except as indicated
in the instructions for use and care.

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SAFETY OPERATION MAINTENANCESETUP
l. 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 receive adequate
ventilation, due to an electrical fault, or if it is
used in a hot environment. Do not place the
Charger on a flammable surface. Do not obstruct
any vents on the Charger. Especially avoid
placing the Charger on carpets and rugs; they
are not only flammable, but they also obstruct
vents under the Charger. Place the Charger on
a stable, solid, nonflammable surface (such as a
stable metal workbench or concrete floor) at least
1 foot away from all flammable objects, such as
drapes or walls. Keep a fire extinguisher and a
smoke detector in the area. Frequently monitor
the Charger and Battery Pack while charging.
9. Lithium Battery Safety Warnings
LITHIUM BATTERIES STORE
A LARGE AMOUNT OF ENERGY AND
WILL VENT FIRE OR EXPLODE
IF MISTREATED:
a. Keep Battery Pack dry.
b. DO NOT DO ANY OF THE FOLLOWING
TO THE BATTERY PACK:
• Open,
• Drop,
• Short-circuit,
• Puncture,
• Incinerate, or
• Expose to temperatures greater than 140°F.
c. Charge Battery Pack only according
to its Charger’s instructions.
d. Inspect Battery Pack before every use;
do not use or charge if damaged.
10. 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:
a. Anyone using vibrating tools regularly or for
an extended period should first be examined
by a doctor 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 to the hand, past hand injuries,
nervous system disorders, diabetes, or
Raynaud’s Disease should not use this tool.
If you feel any symptoms related to
vibration (such as tingling, numbness,
and white or blue fingers), seek medical
advice as soon as possible.
b. Do not smoke during use. Nicotine reduces
the blood supply to the hands and fingers,
increasing the risk of vibration‑related injury.
c. Wear suitable gloves to reduce the
vibration effects on the user.
d. Use tools with the lowest vibration
when there is a choice.
e. Include vibration‑free periods each day of work.
f. Grip tool as lightly as possible (while still keeping
safe control of it). Let the tool do the work.
g. To reduce vibration, maintain the tool as
explained in this manual. If any abnormal
vibration occurs, stop use immediately.
SAVE THESE INSTRUCTIONS.

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SAFETYOPERATIONMAINTENANCE SETUP
Grounding
TO PREVENT ELECTRIC SHOCK AND DEATH FROM INCORRECT GROUNDING:
Check with a qualified electrician if you are in doubt as to whether the outlet is properly
grounded. Do not modify the power cord plug provided with the charger. Do not use the charger
if the power cord or plug is damaged. If damaged, have it repaired by a service facility before
use. If the plug will not fit the outlet, have a proper outlet installed by a qualified electrician.
Extension Cords
Note: Extension cords must not be used with this item’s Charger.
Symbology
VVolts
Direct Current
AAmperes
n0xxxx/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.
WARNING marking concerning Risk
of Kickback. Contact of the guide bar
tip with any object should be avoided.
WARNING marking concerning
Risk of Kickback. Tip contact
can cause the guide bar to move
suddenly upward and backward,
which can cause serious injury.
WARNING marking concerning
Risk of Loss of Control.
Do not operate the chainsaw
with only one hand.
WARNING marking concerning
Risk of Loss of Control.
Always use two hands when
operating the chainsaw.
WARNING marking concerning
Saw Chain Orientation. Cutters
must face in direction of rotation.

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SAFETY OPERATION MAINTENANCESETUP
Specifications
Battery Type Bauer 20V Li‑Ion 57007 (sold separately)
Charger Type Bauer 20V Li‑Ion 57006 (sold separately)
Chain Speed 3.8m/s
Guide Bar 250mm (10″) Sprocket Nose
Saw Chain 10", 3/8" Pitch, 0.043" Gauge
Lubrication Bar and chain oil.
If not available, SAE 30W motor oil may be used.
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.
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.
Charging
Charge battery before using this tool. Follow instructions included with
battery charger. Battery Pack and Charger sold separately.
Functions
Oil Reservoir
Cap
Guide Bar
Saw Chain
Front Hand Guard
Front Handle
Trigger
Lockout
Trigger
Rear
Hand Guard
Rear Handle
Spiked
Bumper
Oil Level
Window

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SAFETYOPERATIONMAINTENANCE SETUP
Chain Saw Safety Devices
Chain Saw – Machine designed to cut wood with
a saw chain and consisting of an integrated unit
of handles, motor, guide bar and saw chain,
designed to be supported with two hands.
Cutting Length – Approximate effective
length of cut of the chain saw.
Drive Sprocket – Chain drive wheel with teeth.
Front Hand Guard – Guard between the front
handle and the saw chain for protecting the hand
from injuries if the hand slips off the handle.
Front Handle – Support handle located at
or towards the front of the machine.
Guide Bar –Attachment that supports
and guides the saw chain.
Kickback – Rapid upward and/or backward motion
of the chain saw which can occur when the moving
saw chain contacts an object such as a log or branch
near the tip of the guide bar or when the wood
closes in and pinches the moving saw chain.
Maximum Speed – Highest saw chain speed attainable
under all conditions of normal use, including no‑load.
Rear Hand Guard – Extension on the lower
part of the rear handle for protecting the hand
from the saw chain if it breaks or derails.
Rear Handle – Support handle located
towards the rear of the machine.
Saw Chain – Serving as a cutting tool,
consisting of drive links and cutters.
Spiked Bumper – Device, fitted in front of
the guide bar mounting point, acting as a
pivot when in contact with a tree or log.

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SAFETY OPERATION MAINTENANCESETUP
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.
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION:
Make sure that the Trigger is in the off-position and remove its Battery
Pack before performing any procedure in this section.
Tool Changing
Guide Bar and Saw Chain Installation and Adjustment
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/Replacement
CAUTION! TO PREVENT INJURY: Wear heavy-duty work gloves when handling Saw Chain.
1. BEFORE FIRST USE: Soak Saw Chain
in bar and chain oil overnight.
2. Loosen the Tension Knob and
remove the Drive Cover.
Tension
Knob
Drive
Cover
3. Attach Bar Support Plate securely using the
Screw through one of the holes in the Guide Bar.
WARNING! TO PREVENT SERIOUS INJURY:
The Bar Support Plate is critical to allow the
Guide Bar to properly tighten in place.
Guide Bar
Screw
Bar Support
Plate
Saw Chain
4. Place the Saw Chain over the Guide Bar. The
cutters of the Saw Chain must face away from the
Chainsaw along the top edge of the Guide Bar. Fit
the drive links into the groove around the Guide Bar.
Cutter
Drive Link
Saw Chain
Direction
Guide Bar

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SAFETYOPERATIONMAINTENANCE SETUP
5. Place the slotted end of the Guide Bar over the
two tabs on the Press Block and place the Saw
Chain over the Drive Sprocket. Make sure all
parts are seated properly. The Bar Support Plate
must be on the outside of the Guide Bar. Check
again that the Saw Chain cutters are aligned
properly and the Saw Chain drive links are
seated completely in the slot of the Guide Bar.
Guide Bar
Press
Block
Drive
Sprocket
6. Replace the Drive Cover. Using a gloved hand,
pull Guide Bar forward firmly before tightening
Tension Knob just until it is snug.
1
2
7. Find a solid surface that will not damage the
Saw Chain or Guide Bar. Rotate the Chainsaw
so that the Guide Bar is pressed firmly
against the surface. While under pressure,
tighten the Tension Knob securely.
1
2
Note: Saw Chain tensioning should always be
done from low tension to proper tension.
8. After final tightening, check Saw Chain tension
as explained in Checking Saw Chain Tension on
page 12 to make sure it is properly adjusted.
9. To re‑tension Saw Chain, turn the Tension
Knob counterclockwise three full turns, then
retighten the Tension Knob by repeating
steps 6 – 8 above to reset the chain tension.

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SAFETY OPERATION MAINTENANCESETUP
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 under the Guide Bar.
3. Pull the Saw Chain away from
the Guide Bar and let go.
4. The Saw Chain should snap back against
the Guide Bar. The Drive Links should fit
snugly in the groove of the Guide Bar, yet you
should still be able to slide the Saw Chain
along the Guide Bar easily by hand.
5. There should be no sagging between the Guide
Bar and Saw Chain on the underside of the Guide
Bar, and Drive Links should not be visible.
Note: Saw Chain tension should be checked
before and periodically during operation.
Guide Bar
Saw Chain
(No Sagging)
(No Sagging)
Drive Link
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.

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SAFETYOPERATIONMAINTENANCE SETUP
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 B.
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.
Remove dirt, stones, loose bark, nails,
staples and wire from the tree.
Felling Direction
Danger Zone
Danger Zone
Escape
Route
Escape
Route
Figure B: Escape Routes

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SAFETY OPERATION MAINTENANCESETUP
Notching Undercut
Make the notch 1/3 the diameter of the tree,
perpendicular to the direction of falls as illustrated in
Figure C. 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 C. 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 C: 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 D.
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 D: Tree Limbing

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SAFETYOPERATIONMAINTENANCE SETUP
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 E, it is cut from the top (overbuck).
Cut from top (overbuck) avoid cutting earth
Figure E: Log Supported Along the Entire Length
When the log is supported on one end, as illustrated in Figure F,
cut 1/3 the diameter from the underside (underbuck).
Then make the finished cut by overbucking to meet the first cut.
2nd cut overbuck (2/3 diameter)
to meet 1st cut (to avoid pinching)
1st cut underbuck (1/3 diameter)
to avoid splintering
Figure F: Log Supported One End

Page 16 For technical questions, please call 1-888-866-5797. Item 64940
SAFETY OPERATION MAINTENANCESETUP
Bucking a Log (continued)
When the log is supported on both ends, as illustrated in Figure G, 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 (2/3 diameter)
to meet 1st cut (to avoid pinching)
1st cut overbuck (1/3 diameter)
to avoid splintering
Figure G: Log Supported Both Ends
When bucking on a slope always stand on the
uphill side of the log, as illustrated in Figure H.
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 H: Bucking a Log

Page 17For technical questions, please call 1-888-866-5797.Item 64940
SAFETYOPERATIONMAINTENANCE SETUP
General Instructions for Use
1. A first‑time user should, as a minimum, practice
cutting logs on a saw‑horse or cradle.
2. Before first use, fill Oil Reservoir to just below neck
with included bar and chain oil. Oil is automatically
applied to the Saw Chain during operation.
3. Periodically during use, check the Oil Level
Window to monitor oil usage. Add oil as needed.
NOTICE: TO PREVENT PROPERTY
DAMAGE: Do not run Chainsaw without oil.
4. 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.
5. Grasp the Front and Rear Handles with both hands.
Always hold the chain saw with your right
hand on the rear handle and your left hand on
the front handle. Always grip the Handles with
the thumb and fingers encircling the handles.
Use this grip,
thumb below
handle
Note: Front Hand Guard not shown.
6. Stand in front of the wood to be cut
with your feet firmly in place.
7. Push the Trigger Lockout in, squeeze and hold
the Trigger, then release the Trigger Lockout.
Release Trigger to turn off Chainsaw.
DANGER! TO PREVENT SERIOUS INJURY
AND DEATH FROM KICKBACK: Do not
touch the Guide Bar nose to the wood.
8. 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! TO PREVENT SERIOUS INJURY
AND DEATH: When cutting loose, round
wood stock, place the wood stock on a sawhorse,
in a cradle, or in a timberjack (all sold separately)
to avoid grabbing and throw back.
9. To prevent accidents, turn off the tool and
remove its Battery Pack after use.
10. When the Chainsaw has cooled completely,
clean thoroughly and cover the Guide Bar
with the Chain / Guide Bar Sheath.
Store the tool indoors out of children’s reach.

Page 18 For technical questions, please call 1-888-866-5797. Item 64940
SAFETY OPERATION MAINTENANCESETUP
Maintenance and Servicing
Procedures not specifically explained in this manual must
be performed only by a qualified technician.
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.
TO PREVENT SERIOUS INJURY FROM TOOL FAILURE: Do not use damaged equipment.
If abnormal noise or vibration occurs, have the problem corrected before further use.
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
• any other condition that may
affect its safe operation.
2. AFTER USE, 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.
3. Li‑Ion BATTERY MUST BE RECYCLED OR
DISPOSED OF PROPERLY.
Do not short, incinerate or open battery.
4. 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.
Maintenance Schedule
Note: 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.
Daily:
Confirm Oil Reservoir is filled with bar and chain oil.
Periodic Maintenance or When
Replacing Saw Chain:
a. Clean and lubricate Guide Bar and turn
over. When doing this, the Bar Support Plate
will need to be remounted to the other
side of the Guide Bar. See Guide Bar
Care / Replacement on page 19.
b. Deburr Guide Bar as needed.
c. Check Drive Sprocket for wear or
damage. Replace as needed.
If Worn or Damaged:
a. Replace Guide Bar if it becomes worn,
bent or damaged. See Guide Bar
Care / Replacement on page 19.
b. Have the cutters sharpened by a
qualified technician or replace Saw
Chain. See Sharpening / Replacing
the Saw Chain on page 19.

Page 19For technical questions, please call 1-888-866-5797.Item 64940
SAFETYOPERATIONMAINTENANCE SETUP
Sharpening/Replacing the Saw Chain
CAUTION! TO PREVENT INJURY: Wear heavy-duty work gloves when handling Saw Chain.
1. For smooth and safe operation,
always keep the 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 usable condition by sharpening will
need to be replaced. Refer to Guide Bar / Saw Chain
Installation/Replacement on page 10.
Note: Reverse the Guide Bar when replacing
the Saw Chain to prevent uneven wear. Refer to
Guide Bar Care / Replacement on page 19.
WARNING! TO PREVENT SERIOUS INJURY: Replace
the Saw Chain only with an identical Saw Chain.
Guide Bar Care/Replacement
1. Remove Drive Cover, Saw Chain, and Guide Bar.
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 (sold separately), then
lubricate the nose sprocket at the port with grease.
Grease
Port
Groove
Cleaning
Tool
4. The rails of the Guide Bar groove should
always 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
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
Note: Replace the Guide Bar when bent, cracked,
or when the Saw Chain moves excessively from
side to side on the Guide Bar due to wear.
WARNING! TO PREVENT SERIOUS INJURY: Replace
the Guide Bar only with an identical Guide Bar.
5. When Replacing the Guide Bar: Mount
Bar Support Plate to Guide Bar securely using the
Screw through one of the holes in the Guide Bar.
6. When Reversing the Guide Bar: Remove
and mount Bar Support Plate on other side
of the Guide Bar securely using the Screw
through one of the holes in the Guide Bar.
WARNING! TO PREVENT SERIOUS INJURY:
The Bar Support Plate is critical to allow the
Guide Bar to properly tighten in place.
Guide Bar
Screw
Bar Support
Plate
Saw Chain

Page 20 For technical questions, please call 1-888-866-5797. Item 64940
SAFETY OPERATION MAINTENANCESETUP
Troubleshooting
Problem Possible Causes Likely Solutions
Tool will not start. 1. Battery Pack not properly
connected.
2. Battery Pack not properly charged.
3. Battery Pack stopped working.
4. Internal damage or wear.
1. Remove Battery Pack, make sure
there are no obstructions, reinsert the
Battery Pack and press firmly until
the Battery Pack locks in place.
2. Make sure Charger is connected and
operating properly. Give enough time
for Battery Pack to recharge properly.
3. Dispose of old Battery Pack
properly or recycle. Replace Battery Pack.
4. Have qualified technician service tool.
Motor runs, but Saw
Chain does not rotate.
1. Saw Chain tension too tight.
2. Guide Bar and/or Saw Chain
damaged.
3. Gear train failure.
1. Adjust Saw Chain tension.
2. Inspect Guide Bar and Saw Chain
for damage. Replace Guide Bar
and Saw Chain if necessary.
3. Have qualified technician service tool.
Motor runs, Saw Chain
rotates but does not
cut or cuts poorly.
1. Saw Chain not tensioned properly.
2. Saw Chain dull.
3. Saw Chain installed backwards.
1. Tension Saw Chain properly.
2. Have the cutters sharpened by a
qualified technician or replace.
3. Reverse direction of Saw Chain.
Saw Chain comes
off Guide Bar.
1. Saw Chain tension too loose.
2. Guide Bar and Saw Chain
not installed correctly.
1. Adjust Saw Chain tension.
2. Review and correct Guide Bar
and Saw Chain installation.
Guide Bar and Saw
Chain running hot
and smoking.
1. Saw Chain tension too tight.
2. Oil Reservoir empty.
1. Adjust Saw Chain tension.
2. Check / refill Oil Reservoir.
Chainsaw stops
while cutting.
Forcing tool to work too
fast causing overload.
Release Trigger to reset internal circuit
breaker. Allow tool to work at its own rate.
Oil leaking from Oil
Reservoir Cap
Oil Reservoir Cap Gasket damaged. Replace Gasket.
Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect Battery Pack and Charger power supply before service.
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only, and are not
available individually as replacement parts. Reference UPC 193175517111.