Portland 57436 Assembly instructions

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Email our technical support at: [email protected]
Using an engine indoors
CAN KILL YOU IN MINUTES.
Engine exhaust contains carbon monoxide.
This is a poison you cannot see or smell.
NEVER use inside
a home or garage,
EVEN IF doors and
windows are open.
Only use OUTSIDE
and far away from
windows, doors,
and vents.
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. 22h
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©2020 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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Table of Contents
Specifications ............................................................2
Safety ........................................................................4
Setup .........................................................................8
Operation..................................................................12
Maintenance.............................................................19
Troubleshooting........................................................24
Warranties ................................................................18
Parts List and Diagram.............................................26
Specifications
Engine
Displacement 42 cc
Engine Type Single Cylinder
2-stroke
Cooling System Forced air cooled
Fuel Type
87+ octane stabilizer-treated
unleaded gasoline containing no
more than 10% ethanol (E10) mixed
with 2-Stroke oil (see below)
Capacity 9.5 fl. oz.
Oil
Type
2-Stroke oil must meet either
JASO M345 FD or ISO-L-EGD
requirements for air-cooled engines,
synthetic
Ratio 50:1 gasoline-to-oil ratio
2.6 oz oil per gallon of gasoline
Bore x Stroke 41.5 mm x 31 mm
Compression Ratio 11:1
Spark Plug Type
Champion ®RCJ7Y / Torch ®L7RTC
Bosch ®L8RTF / NGK ®BPMR7A
DENSO ®W22MPR
Gap 0.02"
Speed Idle 3000 ± 400 RPM
Chainsaw
Saw Chain
Length 18"
Pitch 0.375"
Gauge 0.050"
Model Oregon 91P062G
Guide Bar Length 18"
Model Oregon 180SDEA041
Lubrication Type Bar and chain oil
Capacity 8.8 fl. oz.
The emissions control system for this Engine is warranted for standards set by the
U.S. Environmental Protection Agency and by the California Air Resources Board (also known as CARB).
For warranty information, refer to the last pages of this manual.

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SAFETYSETUPOPERATIONMAINTENANCE
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.
Symbol Definitions
Symbol Property or Statement
RPM Revolutions Per Minute
HP Horsepower
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 Hearing Loss.
Wear hearing protection.
WARNING marking concerning
Risk of Respiratory Injury.
Operate engine OUTSIDE and far away
from windows, doors, and vents.
WARNING marking concerning
Risk of Fire while handling fuel.
Do not smoke while handling fuel.
Symbol Property or Statement
WARNING marking concerning
Risk of Fire.
Do not refuel while operating.
Keep flammable objects
away from engine.
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.

Page 4 For technical questions, please call 1-888-866-5797. ITEM 57436
SAFETY SETUP OPERATION MAINTENANCE
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS –
This manual contains important instructions that should be followed
during setup, operation and maintenance of the chainsaw.
Set up Precautions
1. Gasoline fuel and fumes are flammable, and
potentially explosive. Use proper fuel storage
and handling procedures. Do not store fuel
or other flammable materials nearby.
2. Have multiple ABC class fire extinguishers nearby.
3. Operation of this equipment may create sparks that
can start fires around dry vegetation.
A spark arrestor may be required. The operator
should contact local fire agencies for laws or
regulations relating to fire prevention requirements.
4. Set up and use only on a flat, level,
well-ventilated surface.
5. Wear ANSI-approved safety goggles, heavy-duty
work gloves, and dust mask/respirator during set up.
6. Use only lubricants and fuel recommended
in the Specifications chart of this manual.
Operating Precautions
1. CARBON MONOXIDE HAZARD
Using an engine indoors
CAN KILL YOU IN MINUTES.
Engine exhaust contains
carbon monoxide. This is a poison
you cannot see or smell.
NEVER use inside a home or garage,
EVEN IF doors and windows are open.
Only use OUTSIDE and far away from windows,
doors, and vents.
2. Keep children away from the equipment,
especially while it is operating.
3. Keep all spectators at least six feet
from the Engine during operation.
4. Fire Hazard! Do not fill fuel tank while engine is
running. Do not operate if gasoline has been spilled.
Clean spilled gasoline before starting engine.
Do not operate near pilot light or open flame.
5. Do not touch engine during use.
Let engine cool down after use.
6. Never store fuel or other flammable
materials near the engine.
7. Only use a suitable means of transport and
lifting devices with sufficient weight bearing
capacity when transporting the equipment.
8. Secure the equipment on transport vehicles to
prevent it from rolling, slipping, and tilting.
9. Industrial applications must follow
OSHA requirements.
10. Do not leave the equipment unattended when it is
running. Turn off the equipment (and remove safety
keys, if available) before leaving the work area.
11. The equipment can produce high noise levels.
Prolonged exposure to noise levels
above 85 dBA is hazardous to hearing.
Wear ear protection when operating the or
when working nearby while it is operating.
12. Wear ANSI-approved safety glasses
and hearing protection during use.
13. People with pacemakers should consult their
physician(s) before use. Electromagnetic fields in
close proximity to a heart pacemaker could cause
pacemaker interference or pacemaker failure.
Caution is necessary when near the
engine’s magneto or recoil starter.
14. Use only accessories that are recommended
by Harbor Freight Tools for your model.
Accessories that may be suitable for one
piece of equipment may become hazardous
when used on another piece of equipment.
15. Do not operate in explosive atmospheres,
such as in the presence of flammable
liquids, gases, or dust. Gasoline-powered
engines may ignite the dust or fumes.
16. Stay alert, watch what you are doing and use
common sense when operating this piece of
equipment. Do not use while tired or under the
influence of drugs, alcohol or medication.

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SAFETYSETUPOPERATIONMAINTENANCE
17. Do not overreach. Keep proper footing and
balance at all times. This enables better control
of the equipment in unexpected situations.
18. Use this equipment with both hands only.
Using equipment with only one hand
can easily result in loss of control.
19. Dress properly. Do not wear loose clothing or
jewelry. Keep hair, clothing and gloves away
from moving parts. Loose clothes, jewelry or
long hair can be caught in moving parts.
20. Parts, especially exhaust system components,
get very hot during use. Stay clear of hot parts.
21. Do not cover the equipment during operation.
22. Keep the equipment, engine, and
surrounding area clean at all times.
23. Do not smoke, or allow sparks, flames,
or other sources of ignition around the
equipment, especially when refuelling.
24. Use the equipment, accessories, etc., in
accordance with these instructions and in the
manner intended for the particular type of
equipment, taking into account the working
conditions and the work to be performed.
Use of the equipment for operations different from
those intended could result in a hazardous situation.
25. Do not operate the equipment with known
leaks in the engine’s fuel system.
26. When spills of fuel or oil occur, they must be
cleaned up immediately. Dispose of fluids and
cleaning materials as per any local, state, or
federal codes and regulations. Store oil rags in
a bottom-ventilated, covered, metal container.
27. Keep hands and feet away from moving parts.
Do not reach over or across
equipment while operating.
28. Before use, check for misalignment or binding of
moving parts, breakage of parts, and any other
condition that may affect the equipment’s operation.
If damaged, have the equipment serviced
before using. Many accidents are caused
by poorly maintained equipment.
29. Use the correct equipment for the application.
Do not modify the equipment and do not use the
equipment for a purpose for which it is not intended.
Service Precautions
1. Before service, maintenance, or cleaning:
a. Turn the engine switch to its “OFF” position.
b. Allow the engine to completely cool.
c. Then, remove the spark plug cap
from the spark plug.
2. Keep all safety guards in place and in
proper working order. Safety guards include
muffler, air cleaner, mechanical guards,
and heat shields, among other guards.
3. Do not alter or adjust any part of the
equipment or its engine that is sealed by the
manufacturer or distributor. Only a qualified
service technician may adjust parts that may
increase or decrease governed engine speed.
4. Wear ANSI-approved safety goggles,
heavy-duty work gloves, and
dust mask/respirator during service.
5. Maintain labels and nameplates on the equipment.
These carry important information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
6. Have the equipment serviced by a qualified repair
person using only identical replacement parts.
This will ensure that the safety of the equipment
is maintained. Do not attempt any service or
maintenance procedures not explained in this
manual or any procedures that you are uncertain
about your ability to perform safely or correctly.
7. Store equipment out of the reach of children.
8. Follow scheduled engine and
equipment maintenance.
Refueling:
1. Do not refill the fuel tank while the
engine is running or hot.
2. Do not smoke, or allow sparks, flames,
or other sources of ignition around the
equipment, especially when refuelling.
3. Do not fill fuel tank to the top.
Leave a little room for the fuel to expand as needed.
TO PREVENT FUEL LEAKAGE AND
FIRE HAZARD, do not fill fuel above the
bottom of the Fuel Tank fill neck.
4. Refuel in a well-ventilated area only.
5. Wipe up any spilled fuel and allow excess
to evaporate before starting engine.
To prevent FIRE, do not start the engine
while the smell of fuel hangs in the air.

Page 6 For technical questions, please call 1-888-866-5797. ITEM 57436
SAFETY SETUP OPERATION MAINTENANCE
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. 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
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.
10. Follow instructions for lubricating, chain
tensioning and changing accessories.
Improperly tensioned or lubricated chain may
either break or increase the chance for kickback.
11. Keep handles dry, clean, and free from
oil and grease. Greasy, 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 or non-wood building materials.
Use of the chain saw for operations different than
intended could result in a hazardous situation.
13. 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

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SAFETYSETUPOPERATIONMAINTENANCE
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.
14. Maintain labels and nameplates on the tool.
These carry important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
15. Do not leave the tool unattended when it is running.
Turn off the tool before leaving the work area.
16. This product is not a toy.
Keep it out of reach of children.
17. People with pacemakers should consult their
physician(s) before use. Electromagnetic fields in
close proximity to heart pacemaker could cause
pacemaker interference or pacemaker failure.
18. 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.
SAVE THESE INSTRUCTIONS.

Page 8 For technical questions, please call 1-888-866-5797. ITEM 57436
SAFETY SETUP OPERATION MAINTENANCE
Set Up
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:
Operate only with proper spark arrestor installed.
Operation of this equipment may create sparks that can start fires around dry vegetation.
A spark arrestor may be required.
The operator should contact local fire agencies for laws or regulations
relating to fire prevention requirements.
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL STARTING: Make sure that the Engine is switched OFF,
wait for the Engine to cool, and unplug the spark plug wire before performing any procedure in this section.
At high altitudes, the engine’s carburetor, governor (if so equipped), and any other parts that control
the fuel-air ratio will need to be adjusted by a qualified mechanic to allow efficient high-altitude
use and to prevent damage to the engine and any other devices used with this product.
Note: For additional information regarding the parts listed in the
following pages, refer to Parts List and Diagram on page 26.
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. Trigger 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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SAFETYSETUPOPERATIONMAINTENANCE
Components and Controls
Oil Tank
Cap
Prime Bulb
Fuel Tank
Cap
Chain
Guide Bar
Guide Bar
Sheath
Spiked
Bumper
Saw Chain
Front Handle
Choke
Knob
Trigger
Lockout
Stop Engine
Switch
Trigger
Hand Guard/Chain
Brake Lever
Starter
Handle
Drive
Cover

Page 10 For technical questions, please call 1-888-866-5797. ITEM 57436
SAFETY SETUP OPERATION MAINTENANCE
Guide Bar and Saw Chain Installation and Adjustment
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION:
Make sure that the Engine is switched OFF, wait for the Engine to cool, and unplug
the spark plug wire 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/Replacement
CAUTION! Wear heavy-duty work gloves when handling Saw Chain.
1. BEFORE FIRST USE: Soak the Saw Chain
overnight in bar and chain oil (sold separately).
2. Pull the Hand Guard / Chain Brake
Lever back toward the rear to make
sure the chain brake is not on.
3. Loosen and remove the Drive Cover Nuts,
then remove the Drive Cover from the Saw.
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.
Guide Bar groove
5. Place the slotted end of the Chain Guide Bar over
the Guide Bar Bolts and place the Saw Chain
over the Drive Sprocket. Refer to Figure B.
Lower Hole
Guide
Bar
ChainChain
Tension PinTension Pin
Drive
Cover
GuideGuide
Bar BoltsBar Bolts
Figure B: Installing Guide Bar and Chain
6. 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. The
cutters of the Saw Chain must face away from the
Chainsaw along the top edge of the Guide Bar.
CUTTERS MUST FACE IN
DIRECTION OF ROTATION
Tip of
Bar
Cutter
Drive Link
Cutters Depth Gauge
Drive Links
Direction of Saw
Chain Cutters
Saw
Guide Bar
Nose
Figure C: Saw Chain Orientation
7. Replace the Drive Cover, making sure the Chain
Tension Pin on the Cover is inserted into the lower
hole on the Guide Bar as shown in Figure B.
Replace the Drive Cover Nuts and tighten so that the
Cover is snug, but not tight. Tension the Saw Chain
following the steps in Checking Saw Chain Tension
and Adjusting Saw Chain Tension on page 11.

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SAFETYSETUPOPERATIONMAINTENANCE
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 Chain Guide Bar.
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 D: Checking Saw Chain Tension
Adjusting Saw Chain Tension
1. Loosen the Drive Cover Nuts on the Drive
Cover. It is not necessary to remove the
Drive Cover to adjust chain tension.
2. Turn the Chain Tension Screw
clockwise to increase chain tension and
counterclockwise to decrease tension.
3. Tighten the Drive Cover Nuts on
the Drive Cover while holding
the Chain Guide Bar up.
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.
ChainChain
TensionTension
ScrewScrew
ChainChain
Guide BarGuide Bar
Drive Cover
DDriverive
CoverCover
NutsNuts
Figure E: Adjusting Saw Chain Tension

Page 12 For technical questions, please call 1-888-866-5797. ITEM 57436
SAFETY SETUP OPERATION MAINTENANCE
Operation
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.
Pre-Start Checks
Inspect engine and equipment looking for damaged, loose, and missing parts before set up and starting.
If any problems are found, do not use equipment until fixed properly.
Checking and Filling Fuel
WARNING! TO PREVENT SERIOUS
INJURY FROM FIRE:
Fill the fuel tank in a well-ventilated area
away from ignition sources. If the engine
is hot from use, shut the engine off and
wait for it to cool before adding fuel. Do not smoke.
1. Clean the Fuel Tank Cap and the area around it.
2. Unscrew and remove the Fuel Tank Cap.
Note: Do not use gasoline containing more than
10% ethanol (E10). Do not use E85 ethanol. Add fuel
stabilizer to the gasoline or the Warranty is VOID.
Note: Do not use gasoline that has been stored in a
metal fuel container or a dirty fuel container. It can
cause particles to enter the carburetor, affecting
engine performance and/or causing damage.
IMPORTANT: Your Warranty is VOID if the Engine’s
Fuel Tank is not filled with the proper mixture (50:1) of
unleaded gasoline and 2-cycle oil before each use.
2-Stroke oil must meet either JASO M345 FD or ISO-
L-EGD requirements for air-cooled engines, synthetic.
Before each use, check the fuel level. Do not run the
Engine with an improper unleaded gasoline/2-cycle oil
mixture. Running the Engine with an improper
mixture WILL permanently damage the Engine.
1 GALLON
UNLEADED
GASOLINE
2.6 FLUID OUNCES
2-CYCLE OIL
APPROVED
CONTAINER
Figure F: Fuel-Oil Mixture
3. To obtain the proper gasoline and 2-cycle oil
mixture, mix 2.6 fluid ounces of 2-cycle oil with
1 gallon of unleaded gasoline into an approved
container. Then gently agitate the container
to thoroughly mix the gasoline/2-cycle oil.
4. If needed, fill the Fuel Tank to about 1 inch under
the fill neck of the Fuel Tank with the pre-mixed
unleaded gasoline/2-cycle oil mixture.
5. Then replace the Fuel Tank Cap.
6. Wipe up any spilled fuel and allow excess
to evaporate before starting engine.
To prevent FIRE, do not start the engine
while the smell of fuel hangs in the air.
Starting the Engine
Before Starting the Engine
Before starting the engine:
a. Inspect the equipment and engine.
b. Fill the engine with the proper amount and type of unleaded gasoline and 2-cycle oil mixture.
c. Fill the oil tank with the proper amount and type of bar and chain oil.

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SAFETYSETUPOPERATIONMAINTENANCE
Manual Start
A “cold start” is when the engine is no
longer hot to the touch, typically at least
30 minutes after it has last been run.
1. To start a cold Engine, ensure the Guide
Bar and Saw Chain are not touching or
near any object as Chain will spin during
startup. Push the Hand Guard / Chain Brake
Lever forward to engage the chain brake.
2. Press the Prime Bulb up to 10 times
until the Bulb begins to fill with fuel.
3. Turn the Choke Knob to the
START (closed) position.
4. Hold the Chain Saw securely on the ground.
Firmly grasp the Starter Handle and pull
it rapidly until the Engine sputters.
Note: Do not let the Starter Handle snap
back against the Engine. Hold it as it
recoils so it doesn’t hit the Engine.
1
Hand Guard/
Chain Brake
Lever
Engaged
Prime
Bulb
2
ChokeChoke
KnobKnob
3
RUN START
4

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SAFETY SETUP OPERATION MAINTENANCE
Stopping the Engine
1. To stop the engine in an emergency,
release the Trigger and press
the Stop Engine Switch.
2. Under normal conditions, use
the following procedure:
a. Release the Trigger.
b. Let Engine idle for 3 – 5 minutes.
c. Press the Stop Engine Switch.
NOTICE
See Long-Term Storage on page 23 for complete storage instructions.
Stop Engine
Switch Trigger
5. Turn the Choke Knob to the RUN (open)
position—this will partially engage
the throttle to assist starting.
Pull the Starter Handle rapidly until the
Engine starts. Immediately disengage
the chain brake by pulling back on the
Hand Guard / Chain Brake Lever.
Caution! The Saw Chain will immediately
start spinning with the Engine running
at partial throttle.
Allow the Engine to run at partial throttle
for 5 seconds. Quickly squeeze and then
release theTrigger to disengage the throttle
assist and allow the Engine to idle.
Allow the Engine to warm up at idle for
60 seconds after each start-up so that
the Engine can stabilize before use.
To Restart a Warm Engine
Follow the starting instructions above with the following exception:
Omit the portion of Step 4 which states — Firmly grasp the Starter Handle and
pull it rapidly until the Engine sputters — and proceed to Step 5.
5
RUN START
TriggerTrigger
ChokeChoke
KnobKnob

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SAFETYSETUPOPERATIONMAINTENANCE
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 on a saw-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 Tank to just below fill plug
with oil (not included). Refer to Specifications
chart on page 2 for oil type. Then replace
the Oil Tank Cap. Oil is automatically applied
to the Saw Chain during operation.
2. Start the Engine as detailed in Starting the
Engine on page 12. If necessary, adjust
Engine idle speed so Saw Chain does not
rotate at idle. To adjust, turn the Idle Adjusting
Screw (T) counterclockwise to lower idle speed
until Chain does not turn. Refer to Figure G.
Idle Adjusting
Screw (T)
Figure G: Idle Adjusting Screw
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 H.
Note: The Chainsaw will not operate unless the Hand
Guard / Chain Brake Lever is in the disengaged position.
DISENGAGED ENGAGED
Hand Guard/
Chain Brake
Lever
Figure H: Hand Guard/Chain Brake Lever
4. Grasp the Handles with both hands. Always
grip the handle with the thumb and fingers
encircling the handle as shown in Figure I.
Figure I: 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. Grasp the Rear Handle to activate the
Trigger Lockout Switch, then squeeze and
hold the Trigger. Releasing the Trigger
will return the Engine to idling speed.
Note: The Trigger cannot be activated unless
the Trigger Lockout Switch is depressed.
DANGER! To prevent serious injury and
death from kickback: Do not touch the
Guide Bar Nose to the wood.
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! To prevent serious injury and death
from kickback: When cutting loose, round
wood stock, place the wood stock on a sawhorse,
in a cradle, or use a timberjack (all sold
separately) to avoid grabbing and throw back.
8. When cutting is complete release the Trigger,
allow the Engine to idle for 3 – 5 minutes, then
press the Stop Engine Switch. To prevent
accidents, 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. See Long-Term Storage
on page 23 for complete storage instructions.

Page 16 For technical questions, please call 1-888-866-5797. ITEM 57436
SAFETY SETUP OPERATION MAINTENANCE
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 J.
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 J: Escape Routes
Notching Undercut
Make the notch 1/3 the diameter of the tree,
perpendicular to the direction of falls as illustrated in
Figure K. 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 K. 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 K: Undercutting

Page 17For technical questions, please call 1-888-866-5797.ITEM 57436
SAFETYSETUPOPERATIONMAINTENANCE
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 L.
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 L: Tree Limbing
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 M, it is cut from the top (overbuck).
Cut from top (overbuck) avoid cutting earth
Figure M: Log Supported Along the Entire Length
When the log is supported on one end, as illustrated in Figure N, 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 N: Log Supported One End

Page 18 For technical questions, please call 1-888-866-5797. ITEM 57436
SAFETY SETUP OPERATION MAINTENANCE
Bucking a Log (continued)
When the log is supported on both ends, as illustrated in Figure O, 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 O: Log Supported Both Ends
When bucking on a slope always stand on the
uphill side of the log, as illustrated in Figure P.
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 P: Bucking a Log

Page 19For technical questions, please call 1-888-866-5797.ITEM 57436
SAFETYSETUPOPERATIONMAINTENANCE
Maintenance
WARNING
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL STARTING:
Turn the Power Switch of the equipment to its “OFF” position, wait for the engine to cool, and disconnect
the spark plug cap before performing any inspection, maintenance, or cleaning procedures.
TO PREVENT SERIOUS INJURY FROM EQUIPMENT FAILURE:
Do not use damaged equipment. If abnormal noise, vibration, or excess
smoking occurs, have the problem corrected before further use.
Follow all service instructions in this manual. The engine may fail critically if not serviced properly.
Many maintenance procedures, including any not detailed in this manual, will need to be performed
by a qualified technician for safety. If you have any doubts about your ability to safely service the
equipment or engine, have a qualified technician service the equipment instead.
Cleaning, Maintenance, and Lubrication
1. BEFORE EACH USE, inspect the general
condition of the tool. Check for:
• 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. 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 2 for oil type.
3. IF THE SAW CHAIN BECOMES LOOSE, adjust
the Saw Chain tension as described under
Adjusting Saw Chain Tension on page 11.
4. PERIODICALLY OR WHEN REPLACING SAW
CHAIN, turn the Chain Guide Bar over to distribute
the wear on it. 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.
Refer to Chain Guide Bar Care on page 21.
WARNING! TO PREVENT SERIOUS INJURY:
Replace the Saw Chain and Guide Bar only
with an identical Saw Chain and Guide Bar.
5. AFTER USE, when the Saw has cooled
completely, clean thoroughly and cover the
Chain Guide Bar with the Chain Guide Bar
Sheath. Do not use solvents. Do not immerse
this tool in liquid. Store the tool indoors out of
children’s reach. See Long-Term Storage on
page 23 for complete storage instructions.

Page 20 For technical questions, please call 1-888-866-5797. ITEM 57436
SAFETY SETUP OPERATION MAINTENANCE
Cleaning, Maintenance, and Lubrication 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, fuel quality, and other factors. If you have
doubts about your ability to safely service this tool, have a qualified technician service the equipment instead.
Note: The following procedures are in addition to the regular checks and maintenance
explained as part of the regular operation of the engine and equipment.
Procedure Before
Each Use
Monthly or
every 20
hr. of use
Every 3 mo. or
50 hr. of use
Every 6 mo. or
100 hr. of use
Yearly or
every 300
hr. of use
Every
2 Years
Brush off outside of engine
Check engine fuel/oil mixture level
Check air cleaner
Check sediment cup
Clean air filter *
Check and clean spark plug
Check/adjust idle speed
1. Clean fuel tank and carburetor
2. Clean carbon build-up from
combustion chamber
** **
Replace fuel line if necessary **
*Service more frequently when used in dusty areas.
**These items should be serviced by a qualified technician.
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.