Quick
-
Start Guide
WARNING! Read and follow all Safety Rules and
SASA242
MC
Mix 2.6 oz. of full synthetic 2Cycle Oil with 1 gallon of
gasoline for a 50:1 mixture.
Shake well. Pour into fuel tank.
CAUTION: Do not use alternate
fuels such as ethanol blends
above 10% by volume (E
-15, E
-
85) or any methanol blended
fuel.
Add bar and chain oil to oil tank
until full
.
Make sure chain brake is locked
by pushing forward on
handguard.
Slowly press
primer (air purge)
bulb 10 times.
Pull blue choke lever out fully.
Place right foot in rear handle as
shown. Using right hand, pull
starter rope sharply until machine
starts, or a maximum of 5 times.
Push blue choke lever to half
choke position.
NOTE: In temperatures above
90°F (32°C), push blue choke
lever completely in.
Pull starter
rope until engine
starts.
Allow engine to warm for 30
seconds. Squeeze throttle trigger
to set normal idle.
Before accelerating
to full
throttle, make sure chain brake is
unlocked by pulling back on
handguard.
Press red switch to STOP
position when finished using saw.
n Starting a Warm Engine
NOTE: If the product does not restart, the problem could
be overheated fuel.
To fix this problem, try the following procedure:
15 seconds.
Repeat this procedure if the problem still exists.
NOTE: Always use fresh seasonal fuel and shorten
operatio
IMPORTANT:
· Never let your saw chain come in contact with soil/dirt
Pul
Operating Instructions before using this product.
Failure to do so can result in serious injury.
Instruction Manual
PR3816 / PR4016 / PR4218
127(<RXUSURGXFWPD\GLIIHUVOLJKWO\IURPWKHLWHPVKRZQ
115820549 Rev. B 2017-03-08
+ + +
1. Set the product in a cool area away from direct sunlight.
2. Allow the product to cool for at least 20 minutes.
3. Press primer (air purge) bulb repeatedly for 10-
4. Follow the cold starting procedure.
n time during unseasonably warm weather.
during operation. This will completely dull your chain
and will require installation of a new chain.
· Check your chain tension prior to each time you start
the chainsaw. Check tension on a new chain after the
first 15 minutes of operation. See the manual for chain
tensioning instructions.
IDENTIFICATION OF SYMBOLS
Please read the
operator’s
with any
2
WARNING!
Chainsaws can be
dangerous! Careless
XX
or improper use can
result in serious or
fatal injury to the
operator or others.
manual carefully and make
sure you understand the
instructions before using the
machine.
Always wear:
• Approved protective
helmet
• Approved hearing
protection
• Protective goggles or a
visor
Both of the operator′s hands
must be used to operate the
chainsaw.
Never operate a chainsaw
holding it with one hand only.
Contact of the guide bar tip
object must be
avoided.
WARNING! Tip
contact may cause
the guide bar to move
suddenly upward and
backward (so-called
Other symbols/decals on the machine refer to
special certification requirements for certain
markets.
The Emissions Compliance Period referred to on
the Emission Compliance label indicates the
number of operating hours for which the engine
has been shown to meet Federal emissions
requirements.
Maintenance, replacement, or repair of the
emission control devices and system may be
performed by any nonroad engine repair
establishment or individual.
50:1 gasoline to oil ratio.
Do not use E15 or E85
blended fuels.
Bar and chain oil fill.
Lock chain brake.
Unlock chain brake.
Chain brake
unlocked/locked.
kickback), which may
cause serious injury.
Primer (air purge) bulb.
The engine is stopped by
switching the ignition off
using the stop switch.
Fuel fill.
WARNING! The engine exhaust from this
product contains chemicals known to the
State of California to cause cancer, birth
defects or other reproductive harm.
IDENTIFICATION (WHAT IS WHAT?)
3
(*)
NOTE: The appearance of your product may vary from the item shown.
(*) = Configuration for models equipped with chain tensioning screw located on front. Does not apply to all
models.
(**) = Configuration for models equipped with chain tensioning screw located on side. Does not apply to all
models.
1. Combination tool
2. Chain
3. Front hand guard
4. Muffler
5. Front handle
6. Starter rope
7. Idle speed screw
8. ON/STOP switch
9. Choke/fast idle lever
10. Primer (air purge) bulb
11. Fuel mix fill cap
12. Starter housing
13. Bar and chain oil fill cap
14. Bumper spike
15. Cylinder cover
16. Throttle lock-out
17. Rear handle
18. Throttle trigger
19. Clutch cover
20. Chain catcher
21. Guide bar
22. Chain brake
23. Cutters
24. Depth gauge
25. Drive links
26. Chain direction of travel
27. Guide bar retaining nuts
28. Chain tensioning screw
29. Manual
(**)
SAFETY
4
WARNING! Always disconnect spark plug wire and place wire where it cannot contact spark plug to
prevent accidental starting when setting up, transporting, adjusting or making repairs except
carburetor adjustments.
STANDARDS
This saw has been designed in accordance with:
ANSI B175.1-2012 American National Standards
for Gasoline-Powered Chain Saws - Safety
Requirements
CSA Z62.1-11 Chain Saws – Occupational Health
and Safety
CSA Z62.3-11 Chain Saw Kickback Occupational
Health and Safety
INTRODUCTION
A chainsaw is a high‐speed wood‐cutting tool.
Special safety precautions must be observed to
reduce the risk of accidents.
Failure to follow all safety rules and precautions
can result in serious injury.
If situations occur which are not covered in this
manual, use care and good judgment. If you need
assistance, contact your authorized service dealer
or call consumer support.
PLANNING AHEAD
• Read this manual carefully until you completely
understand and can follow all safety rules,
precautions, and operating instructions before
attempting to use the unit.
• Restrict the use of your saw to adult users who
understand and can follow safety rules,
precautions, and operating instructions found in
this manual.
• Wear protective gear. Always use steel‐toed
safety footwear with non‐slip soles; snug‐fitting
clothing; safety chaps; heavy‐duty, non‐slip
gloves; eye protection such as non‐fogging,
vented goggles or face screen; an approved
safety hard hat; and sound barriers (ear plugs or
mufflers) to protect your hearing. Regular users
should have hearing checked regularly as
chainsaw noise can damage hearing. Secure
hair above shoulder length.
• Keep all parts of your body away from the chain
when the engine is running.
• Keep children, bystanders, and animals a
minimum of 30 feet (10 meters) away from the
work area. Do not allow other people or animals
to be near the chainsaw when starting or
operating the chainsaw.
• Do not handle or operate a chainsaw when you
are fatigued, ill, or upset, or if you have taken
alcohol, drugs, or medication. You must be in
good physical condition and mentally alert.
Chainsaw work is strenuous. If you have any
condition that might be aggravated by strenuous
work, check with your doctor before operating a
chainsaw.
• Carefully plan your sawing operation in advance.
Do not start cutting until you have a clear work
area, secure footing, and, if you are felling trees,
a planned retreat path.
OPERATING YOUR SAW
• Do not operate a chainsaw with one hand.
Serious injury to the operator, helpers,
bystanders or any combination of these persons
may result from one‐handed operation. A
chainsaw is intended for two‐handed use.
• Operate the chainsaw only in a well‐ventilated
outdoor area.
• Do not operate saw from a ladder or in a tree.
• Make sure the chain will not make contact with
any object while starting the engine. Never try to
start the saw when the guide bar is in a cut.
• Do not put pressure on the saw at the end of the
cut. Applying pressure can cause you to lose
control when the cut is completed.
• Stop the engine before setting the saw down.
• Do not operate a chainsaw that is damaged,
improperly adjusted, or not completely and
securely assembled. Always replace bar, chain,
hand guard, or chain brake immediately if it
becomes damaged, broken or is otherwise
removed.
• Exposure to vibrations through prolonged use of
gasoline powered hand tools could cause blood
vessel or nerve damage in the fingers, hands,
and joints of people prone to circulation
disorders or abnormal swellings. Prolonged use
in cold weather has been linked to blood vessel
damage in otherwise healthy people. If
symptoms occur such as numbness, pain, loss
of strength, change in skin color or texture, or
loss of feeling in the fingers, hands, or joints,
discontinue the use of this tool and seek medical
attention. An anti-vibration system does not
guarantee the avoidance of these problems.
Users who operate power tools on a continual
and regular basis must monitor closely their
physical condition and the condition of this tool.
• With the engine stopped,
5
hand-carry the chainsaw with
the muffler away from your
body, and the guide bar and
chain to the rear, preferably
covered with a scabbard.
MAINTAINING YOUR SAW
• Have all chainsaw service
performed by a qualified
service dealer with the
exception of the items listed
in the maintenance section of this manual. For
example, if improper tools are used to remove or
hold the flywheel when servicing the clutch,
structural damage to the flywheel can occur and
cause the flywheel to burst.
• Make certain the saw chain stops moving when
the throttle trigger is released. For correction,
refer to Carburetor Adjustment.
• Never modify your saw in any way.
• Keep the handles dry, clean, and free of oil or
fuel mixture.
• Keep fuel and oil caps, screws, and fasteners
securely tightened.
• Use only genuine accessories and replacement
parts as recommended.
• Your saw is equipped with a temperature limiting
muffler and spark arresting screen which meets
the requirements of California Codes 4442 and
4443. All U.S. forest land and the states of
California, Idaho, Maine, Minnesota, New
Jersey, Oregon, and Washington require by law
that many internal combustion engines to be
equipped with a spark arresting screen. If you
operate a chainsaw in a state or locale where
such regulations exist, you are legally
responsible for maintaining the operating
condition of these parts. Failure to do so is a
violation of the law. Refer to the SERVICE
section for maintenance of the spark arresting
screen.
HANDLING FUEL
• Do not smoke while handling fuel or while
operating the saw.
• Eliminate all sources of sparks or flame in the
areas where fuel is mixed or poured. There
should be no smoking, open flames, or work that
could cause sparks. Allow engine to cool before
refueling.
• Always have fire extinguishing tools available if
you should need them.
• Mix and pour fuel in an outdoor area on bare
ground; store fuel in a cool, dry, well ventilated
place; and use an approved, marked container
for all fuel purposes. Wipe up all fuel spills
before starting saw.
• Move at least 10 feet (3 meters) from fueling site
before starting engine.
• Turn the engine off and let saw cool in a non‐
combustible area, not on dry leaves, straw,
paper, etc. Slowly remove fuel cap and refuel
unit.
• Store the unit and fuel in an area where fuel
vapors cannot reach sparks or open flames from
water heaters, electric motors or switches,
furnaces, etc.
UNDERSTANDING KICKBACK
WARNING! Avoid kickback which can result
in serious injury. Kickback is the backward,
upward or sudden forward motion of the
guide bar occurring when the saw chain
near the upper tip of the guide bar contacts
any object such as a log or branch, or when
the wood closes in and pinches the saw
chain in the cut. Contacting a foreign object
in the wood can also result in loss of
chainsaw control.
ROTATIONAL KICKBACK
Rotational kickback can
occur when the moving
chain contacts an object at
the upper tip of the guide
bar. This contact can
cause the chain to dig into
the object, which stops the
chain for an instant. The result is a lightning fast,
reverse reaction which kicks the guide bar up and
back toward the operator.
PINCH KICKBACK
Pinch kickback can occur when the wood closes in
and pinches the moving saw chain in the cut along
the top of the guide bar and the saw chain is
suddenly stopped. This sudden stopping of the
chain results in a reversal of the chain force used
to cut wood and causes the saw to move in the
opposite direction of the chain rotation. The saw is
driven straight back toward the operator.
PULL-IN
Pull‐in can occur when the moving chain contacts
a foreign object in the wood in the cut along the
bottom of the guide bar and the saw chain is
suddenly stopped. This sudden stopping pulls the
saw forward and away from the operator and could
easily cause the operator to lose control of the
saw.
REDUCING THE CHANCE OF KICKBACK
• Recognize that kickback can happen. With a
basic understanding of kickback, you can reduce
the element of surprise which contributes to
accidents.
• Never let the moving chain contact any object at
the tip of the guide bar.
• Keep the working area free from obstructions
such as other trees, branches, rocks, fences,
stumps, etc. Eliminate or avoid any obstruction
that your saw chain could hit while you are
cutting. When cutting a branch, do not let the
guide bar contact branch or other objects around
it.
• Keep your saw chain sharp and properly
tensioned. A loose or dull chain can increase the
chance of kickback occurring. Follow
manufacturer's chain sharpening and
maintenance instructions. Check tension at
regular intervals with the engine stopped, never
with the engine running. Make sure the bar nuts
are securely tightened after tensioning the chain.
• Begin and continue cutting at full speed. If the
chain is moving at a slower speed, there is
greater chance of kickback occurring.
• Use wedges made of plastic or wood. Never use
6
metal to hold the cut open.
• Cut one log at a time.
• Use extreme caution when re‐entering a
previous cut.
• Do not attempt cuts starting with the tip of the
bar (plunge cuts).
• Watch for shifting logs or other forces that could
close a cut and pinch or fall into chain.
• Do not twist the saw as the bar is withdrawn
from an undercut when bucking.
• Use the reduced-kickback guide bar and lowkickback chain specified for your saw.
MAINTAINING CONTROL
• Keep a good, firm grip on
the saw with both hands
when the engine is running
and don't let go. A firm grip
will help you reduce
kickback and maintain
control of the saw. Keep
the fingers of your left hand
encircling and your left
thumb under the front
handlebar. Keep your right hand completely
around the rear handle whether you are right
handed or left handed. Keep your left arm
straight with the elbow locked.
• Position your left hand on the front handlebar so
it is in a straight line with your right hand on the
rear handle when making bucking cuts. Never
reverse right and left hand positions for any type
of cutting.
• Stand with your weight evenly balanced on both
feet.
• Stand slightly to the left side of the saw to keep
your body from being in a direct line with the
cutting chain.
• Do not
overreach. You
could be drawn
or thrown off
balance and
lose control of
the saw.
• Do not cut
above shoulder
height. It is
difficult to
maintain control
of saw above
shoulder height.
KICKBACK SAFETY FEATURES
WARNING! The following features are
included on your saw to help reduce the
hazard of kickback; however, such features
will not totally eliminate this danger. As a
chainsaw user, do not rely only on safety
devices. You must follow all safety
precautions, instructions, and maintenance
in this manual to help avoid kickback and
other forces which can result in serious
injury.
REDUCED KICKBACK GUIDE BAR
The reduced-kickback guide bar is designed with a
small radius tip which reduces the size of the
kickback danger zone on the bar tip. A reducedkickback guide bar has been demonstrated to
significantly reduce the number and seriousness of
kickbacks when tested in accordance with safety
requirements for gasoline powered chainsaws as
set by ANSI B175.1.
LOW-KICKBACK CHAIN
A low-kickback chain is designed with a contoured
depth gauge and guard link which deflect kickback
force and allow wood to gradually ride into the
cutter. Low-kickback chain has met kickback
performance requirements when tested on a
representative sample of chainsaws below 3.8
cubic inch displacement specified in ANSI B175.1.
FRONT HAND GUARD
The front hand guard is designed to reduce the
chance of your left hand contacting the chain if
your hand slips off the front handlebar.
The distance and “in‐line” position of the hands
provided by the front and rear handles work
together to give balance and resistance in
controlling the pivot of the saw back toward the
operator if kickback occurs.
CHAIN BRAKE
The chain brake is designed to stop the chain in
the event of kickback.
NOTE: We do not represent and you should
not assume that the chain brake will protect
you in the event of a kickback. Do not rely upon
any of the devices built into your saw. You
should use the saw properly and carefully to
avoid kickback.
Repairs on a chain brake should be made by an
authorized servicing dealer. Take your unit to the
place of purchase if purchased from a servicing
dealer, or to the nearest authorized master service
dealer.
NOTE: If this saw is to be used for commercial
logging, a chain brake is required and shall not
be removed or otherwise disabled to comply
with Federal OSHA Regulations for
Commercial Logging.
ASSEMBLY
Chain
Chain
7
If received assembled, repeat all steps to ensure
your saw is properly assembled and all fasteners
are secure.
1. Check that the chain brake is in the unlocked
position by pulling the front hand guard towards
the front handle.
2. Loosen and remove the bar nuts and the clutch
cover from the saw.
3. Remove the plastic shipping spacer (A) if
present.
7. Check that the drive links of the chain fit
correctly on the drive sprocket and that the
chain is in the groove on the bar.
8. Fit the clutch cover and insert the adjusting pin
in the cut-out in the bar.
9. Tighten the bar nut finger-tight.
10. Tension the chain by turning the chain
tensioning screw clockwise using the
combination tool. The chain is correctly
tensioned when it does not sag from the
underside of the bar, but can still be turned
easily by hand.
tensioningside adjust
models
4. An adjusting pin and screw is used to adjust
the tension of the chain. It is very important
when assembling the bar that the adjusting pin
located on the adjusting screw aligns into a
hole in the bar. Turning the screw will move the
adjusting pin up and down the screw. Locate
this adjusting pin before you begin mounting
the bar onto the saw. See following illustration.
5. Turn the adjusting screw by hand
counterclockwise until the adjusting pin is
positioned between the indicator marks (B) on
the clutch cover. This should allow the
adjusting pin to be near the correct position.
6. Slide guide bar with chain on bar bolts until
guide bar stops against clutch drum sprocket.
Cutters must face in the direction of rotation.
11. Hold up the bar tip and tighten the bar nuts with
the combination tool.
When fitting a new chain, the chain tension has to
be checked frequently until the chain is run-in.
Check the chain tension regularly. A correctly
tensioned chain ensures good cutting performance
and long life.
tensioningfront adjust
models
STARTING AND STOPPING
HELPFUL TIP
8
PRE-OPERATION INSPECTION
Perform the following steps before every use of
the machine:
• Check fuel mixture level
• Check bar lubrication
• Check chain sharpness
NOTE: Chain sharpening is a complicated task
that requires special tools. We recommend that
you refer chain sharpening to a professional
chain sharpener.
• Check chain tension
• Inspect and clean the guide bar
• Check for damaged parts
• Check for loose caps
• Check for loose fasteners
• Check for loose parts
• Check for fuel and oil leaks
NOTE: It is normal for a small amount of oil to
appear under the saw after the engine stops.
Do not confuse this with a leaking oil tank.
FUELING THE ENGINE
WARNING! Be sure to read the fuel handling
information in the safety rules section of
this manual before you begin. If you do not
understand the fuel handling information do
not attempt to fuel your unit. Seek help from
someone that does understand the
information or call the consumer assistance
help line.
WARNING! Remove the fuel cap slowly when
fueling.
This equipment is designed to operate on
unleaded gasoline with a minimum 87 octane
(R+M/2 method), with ethanol blended up to 10%
maximum by volume (E-10).
Before operation, gasoline must be mixed with a
good quality full synthetic 2-cycle air-cooled
engine oil designed to be mixed at a ratio of 50:1.
A 50:1 ratio is obtained by mixing 2.6 fluid ounces
of full synthetic oil with 1 gallon of unleaded
gasoline. DO NOT USE automotive oil or marine
oil. These oils will cause engine damage.
When mixing fuel, follow the instructions printed on
the container. Once the oil is added to the
gasoline, shake the container momentarily to
assure that the fuel is thoroughly mixed.
Fill the fuel tank completely with properly mixed
fuel.
Always read and follow the safety rules relating to
fuel before fueling your unit.
Purchase fuel in quantities that can be used within
30 days to assure fuel freshness.
During storage of your fuel
mixture, the oil will separate
from the gasoline.
Shake the fuel can weekly to
insure proper blending of the
gasoline and oil.
CAUTION: Never use unmixed gasoline in your
unit. This will cause permanent engine damage
and void the limited warranty.
CAUTION: Do not use alternate fuels such as
ethanol blends above 10% by volume (E-15, E-
85) or any methanol blended fuel. Use of these
fuels can cause major engine performance
problems and void the limited warranty.
BAR AND CHAIN LUBRICATION
The bar and chain require continuous lubrication.
Lubrication is provided by the automatic oiler
system when the oil tank is kept filled. Lack of oil
will quickly ruin the bar and chain. Too little oil will
cause overheating shown by smoke coming from
the chain and/or discoloration of the bar. In
freezing weather oil will thicken, making it
necessary to thin bar and chain oil with a small
amount (5 to 10%) of #1 diesel fuel or kerosene.
Bar and chain oil must be free flowing for the oil
system to pump enough oil for adequate
lubrication.
If bar and chain oil is not available, use a good
grade SAE 30 oil.
Fill the oil tank completely with oil.
CAUTION: Never use waste oil for bar and
chain lubrication.
CAUTION: Always stop the engine before
removing the oil cap.
STARTING POSITION
1. Lay the chainsaw on a flat surface. The cutting
attachment must not be in contact with the
ground.
2. Lock the chain brake by pushing forward on the
handguard.
3. Place your left hand on the handlebar and your
right hand on the starter rope. Push your right
foot into the rear handle to stabilize the
chainsaw.
4. Follow the starting instructions.
STARTING
Make sure the chain brake is
locked
Press the
primer (air purge)
bulb 10 times
primer
Pull the blue choke lever to the FULL
Using
your
right hand, pull
the
starter
Push the blue choke lever to the HALF
Pull the starter rope sharply with your
Allow the engine to run for 30 seconds
.
Before accelerating to full throttle, p
ull t
he
.
If your engine still does not
Make sure the chain brake is
locked
Press the
primer (air purge)
bulb 10 times
primer
Pull the blue choke lever to the FULL
Push the blue choke lever to the HALF
Pull the starter rope sharply with your
Before accelerating to full throttle, pull the
handle.
9
Follow these instructions to start your chainsaw.
Your chainsaw has a starting reminder decal
similar to the one shown below:
Starting a Cold Engine
before starting.
until fuel begins to fill the bulb. The
(air purge) bulb does not need to be
completely filled.
CHOKE position. The red ON/STOP
switch will be switched automatically to
the ON position.
rope sharply until the machine attempts
to start, or a maximum of 5 times.
NOTE: If the engine sounds as if it is trying to
start before the fifth pull, stop pulling and
immediately proceed to the next step.
NOTE: Do not attempt to cut material with the
choke/fast idle lever in the FULL CHOKE
position.
CHOKE position.
NOTE: In temperatures above 90°F
(32°C), push the blue choke lever
completely in.
right hand until the engine starts.
front hand guard towards the front
handle. The chain brake is now unlocked
Your chainsaw is now ready for use.
WARNING! The chain must not move when
the engine runs at idle speed. If the chain
moves at idle speed refer to CARBURETOR
ADJUSTMENT within this manual.
WARNING! Do not attempt to throw or drop-
start the chainsaw. Doing so will put the
operator at risk of serious injury due to loss
of control of the chainsaw.
WARNING! The muffler is very hot during
and after use. Do not touch the muffler or
allow combustible material such as dry
grass or fuel to do so.
HELPFUL TIP
start after following the
instructions, contact
consumer assistance.
Starting a Warm Engine
before starting.
until fuel begins to fill the bulb. The
(air purge) bulb does not need to be
completely filled.
CHOKE position.
CHOKE position.
NOTE: In temperatures above 90°F
(32°C), push the blue choke lever
completely in.
right hand until the engine starts.
front hand guard towards the front
The chain brake is now unlocked. Your
chainsaw is now ready for use.
Starting a Flooded Engine
The engine may be flooded with too much fuel if it
has not started after 10 pulls.
Flooded engines can be restarted by pushing the
blue choke lever in completely to the OFF CHOKE
position and then following the warm engine
starting procedure listed above. Ensure the red
ON/STOP switch is in the ON position.
Starting could require pulling the starter rope
handle many times depending on how badly the
unit is flooded. If the engine fails to start, refer to
the TROUBLESHOOTING TABLE or call the
consumer assistance help line.
CHAIN TENSION
It is normal for a new chain to stretch during the
first 15 minutes of operation. You should check
your chain tension each time before you start the
chainsaw. See the chain tensioning instructions in
the ASSEMBLY section.
WARNING! If the saw is operated with a
loose chain, the chain could jump off the
guide bar and result in serious injury to the
operator and/or damage the chain, making it
unusable.
CHECKING THE CHAIN BRAKE
10
The chain brake must be checked before each
use. The engine must be running when performing
this procedure.
This is the only instance when the saw should be
placed on the ground with the engine running.
1. Place the saw on firm ground.
2. Grip the rear handle with your right hand and
the front handle with your left hand.
3. Apply full throttle by fully depressing the throttle
trigger.
4. Activate the chain brake by turning your left
wrist toward the hand guard without releasing
your grip around the front handle. The chain
should stop immediately.
WORKING TECHNIQUES
PRACTICING YOUR CUTS
Practice cutting a few small logs using the
following techniques to get the “feel” of using your
saw before you begin a major sawing operation.
• Squeeze the throttle trigger and allow the engine
to reach full speed before cutting.
• Begin cutting with the saw frame against the log.
• Keep the engine at full speed the entire time you
are cutting.
• Allow the chain to cut for you. Exert only light
downward pressure. If you force the cut,
damage to the guide bar, chain, or engine can
result.
• Release the throttle trigger as soon as the cut is
completed, allowing the engine to idle. If you run
the saw at full throttle without a cutting load,
unnecessary wear can occur to the chain, guide
bar, and engine. It is recommended that the
engine not be operated for longer than 30
seconds at full throttle.
• To avoid losing control when cut is complete, do
not put pressure on saw at end of cut.
• Stop the engine before setting the saw down
after cutting.
FELLING A TREE
PLANNING
CHECKING THE INERTIA ACTIVATING
FUNCTION CONTROL
WARNING! When performing the following
procedure, the engine must be turned off.
1. Grip the rear handle with your right hand and
the front handle with your left hand.
2. Hold the chainsaw approximately 16-18 inches
(40-45 centimeters) above a stump or other
wooden surface.
3. Release your grip on the front handle and use
the weight of the saw to let the tip of the guide
bar fall forward and contact the stump. When
the tip of the bar hits the stump, the brake
should activate.
Carefully plan your sawing operation in advance.
Clear the work area. You need a clear area all
around the tree so you can have secure footing.
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.
Study the natural conditions that can cause the
tree to fall in a particular direction.
Natural conditions that can cause a tree to fall in a
particular direction include:
• The wind direction and speed.
• The lean of the tree. The lean of a tree might not
be apparent due to uneven or sloping terrain.
Use a plumb or level to determine the direction
of tree lean.
• Weight and branches on one side.
• Surrounding trees and obstacles.
Look for decay and rot. If the trunk is rotted, it can
snap and fall toward the operator. Check for
broken or dead branches which can fall on you
while cutting.
Make sure there is enough room for the tree to fall.
Maintain a distance of 2-1/2 tree lengths from the
nearest person or other objects. Engine noise can
drown out a warning call.
WARNING! Check for broken or dead
branches which can fall while cutting
causing serious injury. Do not cut near
buildings or electrical wires if you do not
know the direction of tree fall, nor cut at
night since you will not be able to see well,
nor during bad weather such as rain, snow,
or strong winds, etc. If the tree makes
contact with any utility line, the utility
company should be notified immediately.
Remove dirt, stones, loose bark, nails, staples,
and wire from the tree where cuts are to be made.
Plan a clear retreat path to the rear and diagonal
to the line of fall. Note the danger zone (1), retreat
path (2), and felling direction (3) in the following
diagram.
D
*
Use a wedge to remove pinched saw
11
a
n
g
e
r
z
o
Retreat path
z
r
e
g
n
a
D
n
e
F
D
e
n
o
Retreat path
n
o
i
t
c
e
r
i
d
g
n
i
l
l
e
a
n
g
e
r
z
o
n
1
2
e
3
1
1
2
USING THE NOTCH METHOD
The notch method is used to fell large trees. A
notch is cut on the side of the tree in the desired
direction of fall. After a felling cut is made on the
opposite side of tree, the tree will tend to fall into
the notch.
NOTE: If the tree has large buttress roots,
remove them before making the notch. If using
saw to remove buttress roots, keep saw chain
from contacting ground to prevent dulling of the
chain.
Make the notch cut by cutting the top of the notch
first. Cut through 1/3 of the diameter of the tree.
Next complete the notch by cutting the bottom of
the notch. Once the notch is cut remove the notch
of wood from the tree.
After removing the wood from the notch, make the
felling cut on the opposite side of the notch. This is
done by making a cut about two inches (5 cm)
higher than the center of the notch. This will leave
enough uncut wood between the felling cut and
the notch to form a hinge. This hinge will help
prevent the tree from falling in the wrong direction.
NOTE: Before felling cut is complete, use
wedges to open the cut if necessary to control
the direction of fall. To avoid kickback and
chain damage, use wood or plastic wedges, but
never steel or iron wedges.
Be alert to signs that the tree is ready to fall:
cracking sounds, widening of the felling cut, or
movement in the upper branches.
As tree starts to fall, stop saw, put it down, and get
away quickly on your planned retreat path.
DO NOT cut down a partially fallen tree with your
saw. Be extremely cautious with partially fallen
trees that may be poorly supported. When a tree
doesn’t fall completely, set the saw aside and pull
down the tree with a cable winch, block and tackle,
or tractor.
CUTTING A FALLEN TREE (BUCKING)
Bucking is the term used for cutting a fallen tree to
the desired log size.
WARNING! Do not stand on the log being
cut. Any portion can roll causing loss of
footing and control. Do not stand downhill
of the log being cut.
IMPORTANT POINTS
• Cut only one log at a time.
• Cut shattered wood very carefully; sharp pieces
of wood could be flung toward operator.
• Use a sawhorse to cut small logs. Never allow
another person to hold the log while cutting and
never hold the log with your leg or foot.
• Do not cut in an area where logs, limbs, and
roots are tangled such as in a blown down area.
Drag the logs into a clear area before cutting by
pulling out exposed and cleared logs first.
• Make sure the chain will not strike the ground or
any other object during or after cutting.
WARNING! If saw becomes pinched or hung
in a log, don’t try to force it out. You can
lose control of the saw resulting in injury
and/or damage to the saw. Stop the saw,
drive a wedge of plastic or wood into the cut
until the saw can be removed easily. Restart
the saw and carefully reenter the cut. To
avoid kickback and chain damage, do not
use a metal wedge. Do not attempt to restart
your saw when it is pinched or hung in a
log.
TYPES OF BUCKING CUTS
121
212
1 2
12
Overcutting begins on the top side of the log with
the bottom of the saw against the log. When
overcutting use light downward pressure.
Undercutting involves cutting on the underside of
the log with top of saw against the log. When
undercutting use light upward pressure. Hold saw
firmly and maintain control. The saw will tend to
push back toward you.
WARNING! Never turn saw upside down to
undercut. The saw cannot be controlled in
this position.
Always make your first cut on the compression
side of the log. The compression side of the log is
where the pressure of the log’s weight is
concentrated.
BUCKING WITHOUT A SUPPORT
1. Overcut through 1/3 of the diameter of the log.
2. Roll the log over and finish with a second
overcut.
NOTE: Watch for logs with a compression side
to prevent the saw from pinching.
BUCKING USING A LOG OR SUPPORT
STAND
1. Make the first cut on the compression side of
the log. Your first cut should extend 1/3 of the
diameter of the log.
2. Finish with your second cut.
LIMBING AND PRUNING
WARNING! Be alert for and guard against
kickback. Do not allow the moving chain to
contact any other branches or objects at the
nose of the guide bar when limbing or
pruning. Allowing such contact can result in
serious injury.
WARNING! Never climb into a tree to limb or
prune. Do not stand on ladders, platforms, a
log, or in any position which can cause you
to lose your balance or control of the saw.
IMPORTANT POINTS
• Work slowly, keeping both hands firmly gripped
on the saw. Maintain secure footing and
balance.
• Watch out for springpoles. Springpoles are small
size limbs which can catch the saw chain and
whip toward you or pull you off balance. Use
extreme caution when cutting small size limbs or
slender material.
• Be alert for springback. Watch out for branches
that are bent or under pressure. Avoid being
struck by the branch or the saw when the
tension in the wood fibers is released.
• Keep a clear work area. Frequently clear
13
branches out of the way to avoid tripping over
them.
LIMBING
Always limb a tree after it is cut down. Only then
can limbing be done safely and properly.
Leave the larger limbs underneath the felled tree
to support the tree as you work.
Start at the base of the felled tree and work toward
the top, cutting branches and limbs. Remove small
limbs with one cut.
Keep the tree between you and the chain. Cut
from the side of the tree opposite the branch you
are cutting.
Remove larger, supporting branches with the
cutting techniques described in BUCKING
WITHOUT A SUPPORT.
Always use an overcut to cut small and freely
hanging limbs. Undercutting could cause limbs to
fall and pinch the saw.
MAINTENANCE
WARNING! Disconnect the spark plug before
performing maintenance except for
carburetor adjustments.
GENERAL RECOMMENDATIONS
The warranty on this unit does not cover items that
have been subjected to operator abuse or
negligence. To receive full value from the
warranty, the operator must maintain the unit as
instructed in this manual. Various adjustments will
need to be made periodically to properly maintain
your unit.
Have all repairs other than the recommended
maintenance described in the instruction manual
performed by an authorized service dealer. If any
dealer other than an authorized service dealer
performs work on the product, the manufacturer
may not pay for repairs under warranty. It is your
responsibility to maintain and perform general
maintenance.
MAINTENANCE SCHEDULE
Every 5 hours*
• Inspect and clean air filter
• Inspect and clean chain brake
• Inspect and clean guide bar
Every 25 hours*
• Inspect and clean spark arresting screen and
muffler
Yearly
• Replace spark plug
• Replace fuel filter
• Replace air filter
* Each hour of operation is approximately 2 tanks
of fuel.
MAINTENANCE PROCEDURES
GUIDE BAR
Conditions which require guide bar maintenance:
• Saw cuts to one side or at an angle.
PRUNING
WARNING! Limit pruning to limbs shoulder
height or below. Do not cut if branches are
higher than your shoulder. Get a
professional to do the job.
1. Make the first cut one-third of the way through
the bottom of the limb.
2. Make the second cut all the way through the
limb.
3. Make the third overcut leaving a 1 to 2 inch (2.5
to 5 cm) collar from the trunk of the tree.
2
1
• Saw has to be forced through the cut.
• Inadequate supply of oil to bar/chain.
Check the condition of guide bar each time chain
is sharpened. A worn guide bar will damage the
chain and make cutting difficult.
After each use, ensure ON/STOP switch is in the
STOP position, then clean all sawdust from the
guide bar and sprocket hole.
To maintain guide bar:
1. Move ON/STOP switch to STOP.
2. Loosen and remove bar nuts and clutch cover.
Remove bar and chain from saw.
3. Clean the oil holes (A) and bar groove (B).
4. Burring of guide bar rails is a normal process of
rail wear. Remove these burrs with a flat file.
5. When rail top is uneven, use a flat file to
restore square edges and sides.
Replace guide bar when the groove is worn, the
guide bar is bent or cracked, or when excess
heating or burring of the rails occurs. If
replacement is necessary, use only the guide bar
specified for your saw in the repair parts list or on
the decal located on the chainsaw.
3
Inspect and clean the unit and decals
14
After each use, inspect complete unit for loose or
damaged parts. Clean the unit and decals using a
damp cloth with a mild detergent.
Wipe off unit with a clean dry cloth.
Check the chain brake
See CHAIN BRAKE in the OPERATION section.
MUFFLER
As the unit is used, carbon deposits build up on
the muffler and spark arresting screen, and must
be removed to avoid creating a fire hazard or
affecting engine performance.
Replace the spark arresting screen if breaks
occur.
1. Loosen and remove the nut (A) from the
exhaust outlet cover (B).
2. Remove the exhaust outlet cover.
3. Remove the spark arresting screen (C). Handle
the screen carefully to prevent damage.
4. Clean the spark arresting screen gently with a
wire brush. Replace screen if breaks are found.
5. Replace any broken or cracked muffler parts.
6. Reinstall spark arresting screen, exhaust outlet
cover, and nut. Tighten nut securely to 25-35
in-lb.
SPARK PLUG
NOTE: For models sold in Canada, the spark
ignition system complies with the Canadian
standard ICES-002.
1. Loosen the three screws (A) on the cylinder
cover (B).
2. Remove the cylinder cover.
3. Pull off the spark plug boot (C).
4. Remove spark plug (D) from the cylinder and
discard.
5. Install a new spark plug (Brisk HQT-1•) and
tighten securely with a 3/4 inch (19 mm) socket
wrench to 15-25 ft-lb. The spark plug gap
should be 0.025 inch (0,6 mm).
6. Reinstall the spark plug boot.
7. Reinstall the cylinder cover and the three
screws. Tighten securely to 13-18 in-lb.
FUEL FILTER
To replace fuel filter, drain your unit by running it
dry of fuel. Remove fuel cap and its connected
retainer from tank. Pull filter from tank and remove
from line. Replace and reassemble.
AIR FILTER
CAUTION: Do not clean filter in gasoline or
other flammable solvent to avoid creating a fire
hazard or producing evaporative emissions.
A dirty air filter decreases the life and performance
of the engine and increases fuel consumption and
exhaust emissions. Always clean your air filter
according to the maintenance schedule. Clean
more frequently in dusty conditions.
A used air filter can never be completely cleaned.
It is advisable to replace your air filter with a new
one according to the maintenance schedule.
1. Loosen the three screws (A) on the cylinder
cover (B).
2. Remove the cylinder cover.
3. Remove the air filter cover (C) and air filter (D).
4. Clean the air filter using hot soapy water. Rinse
with clean cool water. Air dry completely before
reinstalling.
5. Reinstall the air filter and air filter cover.
6. Reinstall the cylinder cover and three screws.
Tighten securely to 13-18 in-lb.
CARBURETOR ADJUSTMENT
15
WARNING! The chain will be moving during
most of this procedure. Wear your
protective equipment and observe all safety
precautions. The chain must not move at
idle speed.
Indications for idle speed adjustment
The carburetor has been carefully set at the
factory. Adjustments may be necessary if you
notice any of the following conditions:
• The chain moves at idle. See IDLE SPEED-T
ADJUSTMENT procedure.
• The saw will not idle. See IDLE SPEED-T
ADJUSTMENT procedure.
Idle speed-T adjustment
Allow the engine to idle. If the chain moves, the
idle is too fast. If the engine stalls, the idle is too
slow.
Adjust the speed until the engine runs without
chain movement (idle too fast) or stalling (idle too
slow).
The idle speed screw is located in the area above
the primer (air purge) bulb and is labeled “T”.
Turn the idle speed screw (T) clockwise to
increase the engine speed.
Turn the idle speed screw (T) counterclockwise to
decrease the engine speed.
STORAGE
WARNING! Stop the engine and allow it to
cool. Secure the unit before storing or
transporting it in a vehicle. Store the unit
and fuel in an area where fuel vapors cannot
reach sparks or open flames from water
heaters, electric motors, switches, furnaces,
etc.
WARNING ! Store the unit with all guards in
place. Position so that any sharp object
cannot accidentally cause injury to
passersby. Store the unit out of reach of
children.
• Before storing, drain all fuel from the unit. Start
the engine and allow it to run until it runs
completely out of fuel.
• Clean the unit before storing. Pay particular
attention to the air intake area, keeping it free of
debris. Use a mild detergent and sponge to
clean the plastic surfaces.
• Ensure the machine is cleaned and that a
complete service is carried out before long-term
storage.
• The guide bar and chain should be covered with
a scabbard when the machine is being
transported or in storage in order to prevent
accidental contact with the sharp chain. Even a
non-moving chain can cause serious cuts to
yourself or others that make contact with an
exposed chain.
CAUTION: It is important to prevent gum
deposits from forming in essential fuel system
parts such as the carburetor, fuel filter, fuel
hose, or fuel tank during storage. Alcohol
blended fuels (called gasohol) or using ethanol
or methanol can attract moisture which leads to
fuel mixture separation and formation of acids
during storage. Acidic gas can damage the
engine.
TROUBLESHOOTING
C
AUSE
REMEDY
1.
Ignition
switch off.
•
See “STARTING” in the STARTING AND
2.
Engine
flooded.
•
See “
Starting a Flooded Engine
” in the
O
PERATION
section.
3.
Fuel tank empty. •
Fill tank w
ith c
orrect fuel mix
ture. See
AND STOPPING section.
4. Spark plug not firing.
• Ins
tall new s
park plug. See “SPARK PLUG” in
5. Fuel not reaching c
arbureto
r. • Check
for dirty fuel filter; replace.
C
AUSE
R
EMEDY
1. Idle speed re q ui r es
adjustment. • See “CARBURETOR ADJUSTMENT” in the
2. Carburetor requires adjustment. • C
ontact an
authorized service
dealer.
C
AUSE
REMEDY
1. Air f
ilter
dirty. •
Clean or replace air
filter. 2. Spark
plug
fouled.
•
Clean or replace plug
and regap.
3. C
hain
brake locked
.
•
Unlock
chain brake. See “STARTING
POSITION” in the STARTING AND STOPPING
4. Carburetor requires adjustment. • Conta
ct an
authori
zed service dealer.
CAUSE
REMEDY
1. Too much oil mixed w
ith gasoline.
•
Empty
fuel tank and refill w
ith correct
fuel
CAUSE
REMEDY
1.
Idle speed re q ui r es
adjustment.
•
See “C
ARBU
RETOR A
DJUSTMENT
” in the
•
16
WARNING! Always stop the unit and disconnect the spark plug before performing all of the
recommended remedies below except remedies that require operation of the unit.
TROUBLE
: Engine will not start or will run only a few seconds after starting.
STOPPING section.
“FUELING THE ENGINE” in the STARTING
TROUBLE
TROUBLE
TROUBLE
TROUBLE
2. Clutch requires
: Engine will not idle properly.
: Engine will not accelerate, lacks
: Engine smokes excessively.
: Chain moves at idle
repair.
speed.
the MAINTENANCE section.
• Check for kinked or split fuel
replace.
MAINTENANCE Section.
power,
or dies under a
section.
mixture.
MAINTENANCE Section.
Contact an authorized service
load.
line;
dealer.
repair or
TECHNICAL DATA
Model
Guide
Bar Chain CKA without
P/N Length
(in
/cm)
PR3816
589198302
16/40 91PJ 56DL 45° PR4016
589198302
16/40 91PJ 56DL 45°
PR4218
589198303
18/45 91PJ 62DL 45°
Type In In (mm)
In (mm)
° ° °
In (mm)
In (mm) : dl
16 (40) : 56
18 (45) : 62
17
The computed kickback angle (CKA) listed on your saw and listed in the CKA table below represents angle of
kickback your bar and chain combinations will have when tested in accordance with CSA (Canadian Standards
Association) and ANSI standards. When purchasing replacement bar and chain, considerations should be given
to the lower CKA values. Lower CKA values represent safer angles to the user, higher values indicate more angle
and higher kick energies. Computed angles represented indicate total energy and angle associated without
activation of the chain brake during kickback. Activated angle represents chain stopping time relative to activation
angle of chain break and resulting kick angle of saw. In all cases lower CKA values represent a safer operating
environment for the user.
The following guide bar and chain combinations meet kickback requirements of CSA Standards Z62.1, Z62.3, &
ANSI B175.1 when used on saws listed in this manual. Use of bar and chain combinations other than those listed
is not recommended and may not meet the CKA requirements per standard.
chain brake
91PJ 0,375 0,050 (1,3) 5/32 (4,0) 85°
30° 0°
0,025 (0,65)
18
U.S. EPA / CALIFORNIA / ENVIRONMENT CANADA EMISSION CONTROL
WARRANTY STATEMENT
IMPORTANT: This product is compliant with U.S. EPA Phase 3 regulations for exhaust and evaporative emiss ions. To ensure EPA Phase 3
compliance, we recommend using only genuine replacement parts. Use of non-compliant replacement parts is a violation of federal law.
YOUR WARRANTY RIGHTS AND OBLIGATIONS: The U.S. Environmental Protection Agency, California Air Resources Board, Environment
Canada and Husqvarna Consumer Outdoor Products N.A., Inc. are pleased to explain the emissions control system warranty on you r year 2017 and
later off-road engine. In California, all small off-road engines must be designed, built, and equipped to meet the State’s stringent anti-smog standards.
Husqvarna Consumer Outdoor Products N.A., Inc. must warrant the emission control system on your small off -road engine for the periods of time
listed below provided there has been no abuse, neglect, or improper maintenance of your small off-road engine.
Your emission control system includes parts such as the carburetor, the ignition system and the fuel tank, line, and cap. Whe re a warrantable
condition exists, Husqvarna Consumer Outdoor Products N.A., Inc. will repair your small off-road engine at no cost to you. Expenses covered under
warranty include diagnosis, parts and labor.
MANUFACTURER’S WARRANTY COVERAGE: If any emissions related part on your engine (as listed under Emissions Control Warranty Parts List)
is defective or a defect in the materials or workmanship of the engine causes the failure of such an emission related part, the part will be repaired or
replaced by Husqvarna Consumer Outdoor Products N.A., Inc..
OWNER’S WARRANTY RESPONSIBILITIES: As the small off-road engine owner, you are responsible for the performance of the required
maintenance listed in your instruction manual. Husqvarna Consumer Outdoor Products N.A., Inc. recommends that you retain all receipts covering
maintenance on your small off-road engine, but Husqvarna Consumer Outdoor Products N.A., Inc. cannot deny warranty solely for the lack of receipts
or for your failure to ensure the performance of all scheduled maintenance. As the small off-road engine owner, you should be aware that Husqvarna
Consumer Outdoor Products N.A., Inc. may deny you warranty coverage if your small off-road engine or a part of it has failed due to abuse, neglect,
improper maintenance, unapproved modifications, or the use of parts not made or approved by the original equipment manufacturer. You are
responsible for presenting your small off-road engine to a Husqvarna Consumer Outdoor Products N.A., Inc. authorized repair center as soon as a
problem exists. Warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days. If you have any questions regarding
your warranty rights and responsibilities, you should contact your nearest authorized service center.
Call Husqvarna Consumer Outdoor Products N.A., Inc. at 1-800-487-5951 (USA) or 1-800-805-5523 (Canada) or send e-mail correspondence to
emissions@husqvarnagroup.com.
WARRANTY COMMENCEMENT DATE: The warranty period begins on the date the small off-road engine is purchased.
LENGTH OF COVERAGE: This warranty shall be for a period of two years from the initial date of purchase, or until the end of the product warranty
(whichever is longer).
WHAT IS COVERED: REPAIR OR REPLACEMENT OF PARTS. Repair or replacement of any warranted part will be performed at no charge to the
owner at an approved Husqvarna Consumer Outdoor Products N.A., Inc. servicing center. If you have any questions regarding your warranty rights
and responsibilities, you should contact your nearest authorized service center.
Call Husqvarna Consumer Outdoor Products N.A., Inc. at 1-800-487-5951 (USA) or 1-800-805-5523 (Canada) or send e-mail correspondence to
emissions@husqvarnagroup.com.
WARRANTY PERIOD: Any warranted part which is not scheduled for replacement as required maintenance, or which is scheduled only for regular
inspection to the effect of “repair or replace as necessary” shall be warranted for 2 years. Any warranted part which is sche duled for replacement as
required maintenance shall be warranted for the period of time up to the first scheduled rep lacement point for that part.
DIAGNOSIS: The owner shall not be charged for diagnostic labor which leads to the determination that a warranted part is defe ctive if the diagnostic
work is performed at an approved Husqvarna Consumer Outdoor Products N.A., Inc. servicing center.
CONSEQUENTIAL DAMAGES: Husqvarna Consumer Outdoor Products N.A., Inc. may be liable for damages to other engine components caused by
the failure of a warranted part still under warranty.
WHAT IS NOT COVERED: All failures caused by abuse, neglect, or improper maintenance are not covered.
ADD-ON OR MODIFIED PARTS: The use of add-on or modified parts can be grounds for disallowing a warranty claim. Husqvarna Consumer
Outdoor Products N.A., Inc. is not liable to cover failures of warranted parts caused by the use of add-on or modified parts.
HOW TO FILE A CLAIM: If you have any questions regarding your warranty rights and responsibilities, you should contact your n earest authorized
service center.
Call Husqvarna Consumer Outdoor Products N.A., Inc. at 1-800-487-5951 (USA) or 1-800-805-5523 (Canada) or send e-mail correspondence to
emissions@husqvarnagroup.com.
WHERE TO GET WARRANTY SERVICE: Warranty services or repairs shall be provided at all Husqvarna Consumer Outdoor Products N.A., Inc.
service centers. Call Husqvarna Consumer Outdoor Products N.A., Inc. at 1-800-487-5951 (USA) or 1-800-805-5523 (Canada) or send e-mail
correspondence to emissions@husqvarnagroup.com.
MAINTENANCE, REPLACEMENT AND REPAIR OF EMISSION RELATED PARTS: Any Husqvarn a Consumer Outdoor Products N.A., Inc.
approved replacement part used in the performance of any warranty maintenance or repair on emission related parts will be pro vided without charge
to the owner if the part is under warranty.
EMISSION CONTROL WARRANTY PARTS LIST: Carburetor, air filter (covered up to maintenance schedule), ignition system: spark plug (covered
up to maintenance schedule), ignition module, muffler including catalyst (if equipped), fuel tank, line, and cap.
MAINTENANCE STATEMENT: The owner is responsible for the performance of all required maintenance as defined in the instruction manual.
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