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INSTRUCTION MANUAL
IMPORTANT INFORMATION: Please read these instr u ctions carefully
and make sure you understand them before using this unit. R etain these
instructions for future refer ence.
350
GB
545123594 Rev. 2 1/31/07 BRW
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IDENTIFICATION (WHAT IS WHAT?)
Chain
Adjustment Tool
(Bar Tool)
Primer
Bulb
Fuel Mix Fill Cap
Starter
Housing
Bar Oil Fill Cap
Chain
Front Hand Guard Front Handle
Starter Rope
ON/STOP
Switch
Muffler
Guide Bar
Chain Brake
Nuts
Cylinder Cover
Throttle
Lockout
Rear
Handle
Throttle
Trigger
Choke
Knob
Chain
Brake
Chain
Direction
of Travel
Adjusting
Screw
Chain
Catcher
Bar Sprocket Hole
IDENTIFICATION OF SYMBOLS
WARNING! This chain
saw can be dangerous! Careless or improper use can cause
serious or even fatal injury.
Read and understand the
instruction manual before
using the chain saw.
Always use two hands when operating the chain saw.
WARNING! Contacting the guide bar tip with any object
should be avoided; tip contact may cause the guide bar to
move suddenly upward and backward, which may cause serious injury.
Always wear appropriate ear protection, eye protection and head
protection.
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IDENTIFICATION OF SYMBOLS
Move ON/STOP switch to
the ON position.
Slowly press primer bulb
6times.
Pull the starter rope
sharply 5 times with your
right hand.
Pull the starter rope sharply
with your right hand until
the engine starts.
Pull choke/fast idle lever
out to the full extent (to
the FULL CHOKE position).
Push the choke/fast idle
lever in to the HALF
CHOKE position.
Starting Reminder
SAFETY RULES
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.
Because a chain saw is a high-speed woodcutting tool, special safety precautions must
be observed to reduce the risk of accidents.
Careless or improper use of this tool can
cause serious injury.
PLAN AHEAD
S Read this manual carefully until you com-
pletely understand and can follow all safety
rules, precautions, and operating instruc tions before attempting to use the unit.
S Restrict the use of your saw to adult users
who understand and can follow safety rules,
precautions, and operating instructions
found in this manual.
Snug
Fitting
Clothing
Safety
Shoes
Safety Chaps
Heavy Duty
Gloves
Eye
Protection
Hearing
Protection
Safety Hat
S Wear protective gear. Always use steel-toed
safety footwear with non-slip soles; snug-fitting clothing; 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 chain saw noise can damage hearing.
Secure hair above shoulder length.
S Keep all parts of your body away from the
chain when the engine is running.
S Keep children, bystanders, and animals a
minimum of 10 Meters away from the work
area. Do not allow other people or animals to
be near the chain saw when starting or operating the chain saw.
S Do not handle or operate a chain saw 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. Chain saw work is strenuous. If
you have any condition that might be aggravated by strenuous work, check with your
doctor before operating a chain saw.
S Carefully plan your sawing operation in ad-
vance. Do not start cutting until you have a
clear work area, secure footing, and, if you
are felling trees, a planned retreat path.
OPERA TE YOUR SAW SAFEL Y
S Do not operate a chain saw with one hand.
Serious injury to the operator, helpers, bystanders or any combination of these persons may result from one-handed operation.
A chain saw is intended for two-handed use.
S Operate the chain saw only in a well-venti-
lated outdoor area.
S Do not operate saw from a ladder or in a tree,
unless you are specifically trained to do so.
S Make sure the chain will not make contact
with any object whi le start ing the eng ine.
Never try to start the saw when the guide
bar is in a cut.
S 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.
S Stop the engine before setting the saw
down.
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S Do not operate a chain saw that is dam-
aged, 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.
S With the engine stopped, hand carry the
chain saw with the muffler away from your
body, and the guide bar and chain to the
rear, preferably covered with a scabbard.
MAINTAIN YOUR SAW IN GOOD
WORKING ORDER
S Have all chain saw 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.
S Make certain the saw chain stops moving
when the throttle trigger is released. For
correction, refer to CARBURETOR ADJUSTMENTS.
S Never modify your saw in any way.
S Keep the handles dry, clean, and free of oil
or fuel mixture.
S Keep fuel and oil caps, screws, and fas-
teners securely tightened.
S Use only PartnerR accessories and re-
placement parts as recommended.
HANDLE FUEL WITH CAUTION
S Do not smoke while handling fuel or while
operating the saw.
S 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.
S 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.
S Move at least 10 feet (3 meters) from fuel-
ing site before starting engine.
S 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.
S 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.
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
chain saw control.
S 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.
S Pinch-Kickback can occur when the 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.
S 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.
Avoid Pinch--Kickback:
S Be extremely aware of situations or obstruc-
tions that can cause material to pinch the top
of or otherwise stop the chain.
S Do not cut more than one log at a time.
S Do not twist the saw as the bar is with-
drawn from an undercut when bucking.
Avoid Pull-- In:
S Always begin cutting with the engine at full
speed and the saw housing against wood.
S Use wedges made of plastic or wood.
Never use metal to hold the cut open.
Kickback Path
Avoid Obstructions
Clear The Working Area
REDUCE THE CHANCE OF
KICKBACK
S Recognize that kickback can happen.
With a basic understanding of kickback,
you can reduce the element of surprise
which contributes to accidents.
S Never let the moving chain contact any ob-
ject at the tip of the guide bar.
S Keep the working area free from obstruc-
tions such as other trees, branches, rocks,
fences, stumps, etc. Eliminate or avoid any
obstruction that your saw chain could hit
while you are cutting through a particular log
or branch.
S Keep your saw chain sharp and properly
tensioned. A loose or dull chain can increase
the chance of kickback occurring. Follow
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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
clamp nuts are securely tightened after tensioning the chain.
S Begin and continue cutting at full speed. If
the chain is moving at a slower speed,
there is greater chance of kickback occurring.
S Cut one log at a time.
S Use extreme caution when re-entering a
previous cut.
S Do not attempt cuts starting with the tip of
the bar (plunge cuts).
S Watch for shifting logs or other forces that
could close a cut and pinch or fall into chain.
S Use the Reduced--Kickback Guide Bar
and Low --Kickback Chain specified for
your saw.
MAINTAIN CONTROL
Never reverse
hand positions
Stand to the left of
the saw
Thumb on underside of
handlebar
Elbow locked
S 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
your are right handed or left handed. Keep
your left arm straight with the elbow
locked.
S Position your left hand on the front handle-
bar 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.
S Stand with your weight evenly balanced on
both feet.
S Stand slightly to the left side of the saw to
keep your body from being in a direct line
with the cutting chain.
S Do not overreach. You could be drawn or
thrown off balance and lose control of the
saw.
S Do not cut above shoulder height. It is diffi-
cult 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 dangerous reaction. As a chain saw 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.
S Reduced--Kickback Guide Bar, designed
with a small radius tip which reduces the
size of the kickback danger zone on the
bar tip. A Reduced--Kickbac k Guide Bar
has been demonstrated to significantly reduce the number and seriousness of kickbacks.
Small Radius Tip
Reduced Kickback Symmetrical Guide Bar
Symmetrical Guide Bar
Large Radius Tip
S Low-- Kickback Chain, 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
Contoured Depth Gauge
Elongated Guard Link
Deflects Kickback
Force And Allows
Wood To Gradually
Ride Into Cutter
S Handguard, designed to reduce the
chance of your left hand contacting the
chain if your hand slips off the front handlebar.
S Position of front and rear handlebars, de-
signed with distance between handles and
“in-line” with each other. The spread and
“in-line” position of the hands provided by
this design work together to give balance
and resistance in controlling the pivot of
the saw back toward the operator if kickback occurs.
WARNING: DO NOT RELY UPON
ANY OF THE DEVICES BUILT INTO YOUR
SAW. YOU SHOULD USE THE SAW
PROPERLY AND CAREFULLY TO AVOID
KICKBACK. Reduced--kickback guide bars
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and low--kickback saw chains reduce the
chance and magnitude of kickback and are
recommended. Your saw has a low kickback chain and bar as original equipment.
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.
S Tip contact in some cases may cause a
lightning fast reverse REACTION, kicking
the guide bar up and back toward the operator.
S Pinching the saw chain along the top of the
guide bar may push the guide bar rapidly
back toward the operator.
S Either of these reactions may cause you to
lose control of the saw which could result
in serious injury. Do not rely exclusively
upon the safety devices built into your saw.
CHAIN BRAKE
S Chain brake, designed to stop the chain in
the event of kickback.
WARNING: Your chain saw is
equipped with a chain brake that is designed
to stop the chain immediately if you get a
kickback. The chain brake reduces the risk
of accidents, but only you can prevent them.
DO NOT ASSUME THAT THE CHAIN
BRAKE WILL PROTECT YOU IN THE
EVENT OF A KICKBACK.
SAFETY NOTICE: 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.
ASSEMBLY
WARNING: Make sure unit is prop-
erly assembled and all fasteners are secure.
Protective gloves (not provided) should be
worn during assembly.
ATTACHING THE BUMPER SPIKE
(not provided)
The bumper spike may be used as a pivot
when making a cut.
1. Loosen and remove the chain brake nuts
and the chain brake from the saw.
2. Attach the bumper slike with two screws
as illustrated.
ATTACHING THE BAR & CHAIN (If
not already attached)
WARNING: If received asse mbled,
repeat all steps to ensure your saw is properly
assembled and all fasteners are secure. Always wear gloves when handling the chain.
The chain is sharp and can cut you even when
it is not moving!
1. Loosen and remove the chain brake nuts
and the chain brake from the saw.
2. Remove the plastic shipping spacer (if
present).
Chain Brake
Chain Brake
Nuts
Bar Tool
Location ofshipping spacer
3. An adjusting pin and screw is used to adjust the tension of the chain. It is very important when assembling the bar, that the
pin located on the adjusting screw aligns
into a hole in the bar. Turning the screw will
move the adjustment pin up and down the
screw. Locate this adjustment before you
begin mounting the bar onto the saw. See
illustration below.
Adjustment located on Chain Brake
Inside view of
Chain Brake
4. Turn the adjusting screw by hand counterclockwise until the adjusting pin just
touches the stop. This should allow the
pin to be near the correct position.
5. Slide guide bar behind clutch drum until
guide bar stops against clutch drum
sprocket.
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Mount the Bar
6. Carefully remove the chain from the package. Hold chain with the drive links as
shown.
CUTTERS MUST FACE IN
DIIRECTION OF ROTATION
Tip of
Bar
Cutters
Depth Gauge
Drive Links
Placechainontothesprocket
7. Place chain over and behind clutch, fitting
the drive links in the clutch drum sprocket.
8. Fit bottom of drive links between the
teeth in the sprocket in the nose of the
guide bar.
9. Fit chain drive links into bar groove.
10. Pull guide bar forward until chain is snug
in guide bar groove. Ensure all drive
links are in the bar groove.
NOTE: CHAIN BRAKE MUST BE
DISENGAGED BEFORE INSTALLATION ON THE SAW. TO DISENGAGE
CHAIN BRAKE, PULL THE FRONT
HAND GUAR D BACK TOWARD THE
REAR OF THE CH AIN BRAKE AS
FARAS POSSIBLE (SEE ILLUSTRATION).
DISENGAGED
ENGAGED
Chain Brake
Front Hand Guard
11. Now, install chain brake making sure the
adjusting pin is positioned in the lower
hole in the guide bar. Remember this pin
moves the bar forward and backward as
the screw is turned.
12. Install chain brake nuts and finger tighten
only. Once the chain is tensioned, you
will need to tighten chain brake nuts.
CHAIN TENSION
(Including units with cha in already
installed)
NOTE
: When adjusting chain tension,
make sure the chain brake nuts are finger
tight only. Attempting to tension the chain
when the chain brake nuts are tight can
cause damage.
Checking the tension:
Use the screwdriver end of the chain adjustment tool (bar tool) to move the chain around
the bar. If the chain does not rotate, it is too
tight. If too loose, thechain will sag below the
bar.
Chain Brake Nuts
Chain Adjustment
Tool (Bar Tool)
Adjusting the tension:
Chain tension is very impo rtant. Chain
stretches during use. This is especially true
during the first few times you use your saw.
Always check chain tension each time you
use and refuel your saw.
You can adjust the chain tension by loosening the chain brake nuts and turning the adjusting screw 1/4 of a turn while lifting up on
the bar.
S If chain is too tight, turn adjusting screw
1/4 turn counterclockwise.
S If chain is too loose, turn adjusting screw
1/4 turn clockwise.
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Adjusting
Screw
Chain Brake Nuts
Guide Bar
Adjusting Screw -- 1/4 Turn
S Lift up the tip of the bar and securely
tighten the chain brake nuts with the bar
tool.
S Recheck chain tension.
Chain Brake
Nuts
WARNING: If the saw is operated
with a loose chain, the chain could jump off
the guide bar and result in serious injury.
OPERATING YOUR UNIT
BEFORE STARTING ENGINE
WARNING: Be sure to read the fuel
information in the safety rules before you begin. If you do not understand the safety rules,
do not attempt to fuel your unit. Contact an
authorized service dealer.
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.Only use Bar and
Chain Oil for bar and chain lubrication.
Oil Cap
Fuel mix cap
FUELING ENGINE
WARNING: Remove fuel cap slowly
when refueling
This engine is certified to operate on
unleaded gasoline. Before operation,
gasoline must be mixed with a good quality
2-cycle air-cooled engine oil. If you do not
use this oil, use a good quality 2-cycle
air-cooled oil designed to be mixed at a ratio
of 40:1. A 40:1 ratio is obtained by mixing
0,125 liter of oil with 5 liters of unleaded
gasoline. DO NOT USE automotive or boat
oil. These oils will cause engine damage.
When mixing fuel follow the instructions
printed on the container. Always read and
follow the safety rules relating to fuel before
fueling your unit.
IMPORTANT
Experience indicates that alcohol blended
fuels (called gasohol or using ethanol or
methanol) can attract moisture which leads
to separation and formation of acids during
storage. Acidic gas can damage the fuel
system of an engine while in storage. To
avoid engine problems, empty the fuel
system before storage for 30 days or longer.
Drain the gas tank, start the engine and let it
run until the fuel lines and carburetor are
empty. Use fresh fuel next season. Never
use engine or carburetor cleaner products in
the fuel tank or permanent damage may
occur.
CHAIN BRAKE
Ensure chain brake is disengaged by pulling
the front hand guard back toward the front
handle as far as possible. The chain brake
must be disengaged before cutting with the
saw.
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. Avoid contact with the muffler. A hot
muffler can cause serious burns.
To stop the engine, move the ON/STOP
switch to the STOP position.
To start the engine, hold the saw firmly on
the ground as illustrated below. Make sure
the chain is free to turn without contacting
any object.
Hold saw firmly while pulling starter rope.
Use only 15” ---18” of rope per pull.
IMPORT ANT POINTS TO REMEMBER
When pulling the starter rope, do not use the
full extent of the rope as this can cause the
rope to break. Do not let starter rope snap
back. Hold the handle and let the rope rewind
slowly.
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For cold weather starting, start the unit at
FULL CHOKE; allow the engine to warm up
before squeezing the throttle trigger.
NOTE: Do not attempt to cut material with
the choke/fast idle lever in the FULL CHOKE
position.
STARTING A COLD ENGINE (or
warm engine after running out of
fuel)
NOTE
: In the following steps, when the
choke/fast idle lever is pulled out to the full
extent, the correct throttle setting for starting
is set automatically.
ON/STOP SWITCH
ON
STOP
(SIDE VIEW)
1. Move ON/STOP switch to the ON position.
2. Pull choke/fast idle lever out to the full extent (to the FULL CHOKE position).
3. Slowly press primer bulb 6 times.
4. Pull the starter rope sharply 5 times with
your right hand. Then, proceed to the
next step.
NOTE: If the engine sounds as if it is trying
to start before the 5th pull, stop pulling and
immediately proceed to the next step.
5. Push the choke/fast idle lever in to the
HALF CHOKE position.
OFF HALF
CHOKE/FAST IDLE LEVER
Choke/
fast idle lever
(SIDE VIEW)
FULL
6. Pull the starter rope sharply with your
right hand until the engine starts.
7. Allow the engine to run for approximately
30 seconds. Then, squeeze and release
the throttle trigger to allow engine to return to idle speed.
STARTING A WARM ENGINE
1. Move ON/STOP switch to the ON position.
2. Pull the choke/fast idle lever out to the
HALF CHOKE position.
3. Slowly press primer bulb 6 times.
4. Pull the starter rope sharply with your
right hand until the engine starts.
5. Squeeze and release throttle trigger to
allow engine to return to idle speed.
DIFFICULT STARTING (or 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 cleared of excess
fuel by pushing the choke/fast idle lever in
completely (to the OFF CHOKE position)
and then following the warm engine starting
procedure listed above. Ensure the 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 engine fails to start, refer
to the TROUBLESHOOTING TABLE.
CHAIN BRAKE
WARNING: If the brake band is
worn too thin it may break when the chain
brake is triggered. With a broken brake band,
the chain brake will not stop the chain. The
chain brake should be replaced by an authorized service dealer if any part is worn to less
than 0,02″ (0,5 mm) thick. Repairs on a
chain brake should be made by an authorized service dealer. Take your unit to the
place of purchase if purchased from a servicing dealer, or to the nearest authorized
master service dealer.
S This saw is equipped with a chain brake.
The brake is designed to stop the chain if
kickback occurs.
S The inertia activated chain brake is activated
if the front hand guard is pushed forward,
either manually or by centrifugal force.
S If the brake is already activated, it is
disengaged by pulling the front hand guard
back toward the front handle as far as
possible.
S When cutting with the saw,the chain brake
must be disengaged.
Disengaged
Engaged
Braking function control
CAUTION:
The chain brake must be
checked several times daily. 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.
Place the saw on firm ground. Grip the rear
handle with your right hand and the front handle with your left hand. Apply full throttle by
fully depressing the throttle trigger. Activate
the chain brake by turning your left wrist
against the hand guard without releasing
your grip around the front handle. The chain
should stop immediately.
Inertia activating function control
WARNING: When performing the
following procedure, the engine must be
turned off.
Grip the rear handle with your right hand and
the front handle with your left hand. Hold the
chain saw approximately 14” (35 cm) above a
stump or other wooden surface. Release your
grip on the front handle and use the weight of
the saw to let the top of the guide bar fall forwardandcontactthestump. Whenthetipof
the bar hits the stump, the brake should activate .
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CUTTING METHODS
IMPORTANT POINTS
S Cut wood only. Do not cut metal, plastics,
masonry, non-wood building materials, etc.
S Stop the saw if the chain strikes a foreign
object. Inspect the saw and repair parts as
necessary.
S Keep the chain out of dirt and sand. Even a
small amount of dirt will quickly dull a chain
and increase the possibility of kickback.
S 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.
S Squeeze the throttle trigger and allow
the engine to reach full speed before
cutting.
S Begin cutting with the saw frame
against the log.
S Keep the engine at full speed the entire
time you are cutting.
S Allow the chain to cut for you. Exert only
light downward pressure.
S 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.
S To avoid losing control when cut is com-
plete, do not put pressure on saw at end
of cut.
S Stop the engine before setting the saw down.
TREE FELLING TECHNIQUES
WARNING: Do not cut near build-
ings or electrical wires if you do not know the
direction of tree fall, at night since you will not
be able to see well, or during bad weather
such as rain, snow, or strong winds. as fall is
unpredictable.
Carefully plan your sawing operation in advance. You need a clear area all around the
tree so you can have secure footing. Check
for broken or dead branches which can fall
on you causing serious injury.
Natural conditions that can cause a tree to
fall in a particular direction include:
S The wind direction and speed.
S 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.
S Weight and branches on one side.
S Surrounding trees and obstacles.
Look for decay and rot. If the trunk is rotted,
it can snap and fall toward the operator.
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.
Remove dirt, stones, loose bark, nails, staples, and wire from the tree where cuts are to
be made.
Direction of Fall
45_
Plan a clear retreat path
FELLING LARGE TREES
(15 cm in diameter or larger)
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.
NOTCH CUT AND FELLING THE
TREE
S Make 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. See illustration. Once the notch is cut remove the
notch of wood from the tree.
Notch
First cut
Second cut
Final cut here. 5 cm above
center of notch.
5cm
5cm
S After removing the cutout of wood, make
the felling cut on the opposite side of the
notch. This is done by making a cut about
two inches 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.
Opening
of felling
cut
Closing of
notch
Hinge holds tree on stump and helps
control fall
NOTE: Before felling cut is complete, use
wedges to open the cut when necessary to
control the direction of fall. Use wood or
plastic wedges, but never steel or iron, to
avoid kickback and chain damage.
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11
S Be alert to signs that the tree is ready to fall:
cracking sounds, widening of the felling cut,
or movement in the upper branches.
S As tree starts to fall, stop saw, put it down,
and get away quickly on your planned retreat path.
S 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. To
avoid injury, do not cut down a partially fallen tree with your saw.
CUTTING A FALLEN TREE
(BUCKING)
Bucking is the term used for cutting a fallen
tree to the desired log length.
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
S Cut only one log at a time.
S Cut shattered wood very carefully; sharp
pieces of wood could be flung toward operator.
S 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.
S Do not cut in an area where logs, limbs,
and roots are tangled. Drag the logs into a
clear area before cutting by pulling out exposed and cleared logs first.
TYPES OF CUTTING USED FOR
BUCKING
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. Do not
attempt to restart your saw when it is pinched
or hung in a log.
Turn saw OFF and use a plastic or
wooden wedge to force cut open.
Overcutting begins on the top side of the log
with the saw against the log. When overcutting use light downward pressure.
Overcutting
Undercutting
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.
Second cut
First cut on pressure side of log
First cut on pressure side of log
Second cut
BUCKING WITHOUT A SUPPORT
S Overcut through 1/3 of the diameter of the
log.
S Roll the log over and finish with a second
overcut.
S Give special attention to logs under strain
to prevent the saw from pinching. Make
the first cut on the pressure side to relieve
the stress on the log.
BUCKING USING A LOG OR
SUPPORT STAND
S Remember your first cut is always on the
pressure side of the log.
S Your first cut should extend
1/3 of the
diameter of the log.
S Finish with your second cut.
1stCut
2
nd
Cut
Using a log for support
2ndCut
1
st
Cut
1stCut
2
nd
Cut
Using a support stand
1stCut
2
nd
Cut
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12
LIMBING AND PRUNING
WARNING: Neverclimbintoatreeto
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
S Watch out for springpoles. Use extreme
caution when cutting small size limbs.
Slender material may catch the saw chain
and be whipped toward you or pull you off
balance.
S 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.
S Frequently clear branches out of the way
to avoid tripping over them.
LIMBING
S Always limb a tree after it is cut down. Only
then can limbing be done safely and properly.
S Leave the larger limbs underneath the
felled tree to support the tree as you work.
S Start at base of the felled tree and work to-
ward the top, cutting branches and limbs.
Remove small limbs with one cut.
S Keep the tree between you and the chain
as much as possible.
S Remove larger, supporting branches with
the cutting techniques described in BUCKING WITHOUT A SUPPORT.
S Always use an overcut to cut small and
freely hanging limbs. Undercutting could
cause limbs to fall and pinch saw.
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.
S Make your fist cut
1/3 of the way through
the bottom of the limb.
S Next make a 2nd cut all the way through
the limb. Then cut a third overcut leaving
a 1 to 2 inch collar from the trunk of the tree.
First cut
Second cut
Third cut
Collar
Pruning technique
SERVICE AND ADJUSTMENTS
WARNING: Disconnect the spark
plug before performing maintenance, except
for carburetor adjustments.
We recommend all service and adjustments
not listed in this manual be performed by an
authorized service dealer.
MAINTENANCE SCHEDULE
Check:
Fuel mixture level Before each use....
Bar lubrication Before each use.......
Chain tension Before each use.......
Chain sharpness Before each use....
For damaged parts Before each use..
For loose caps Before each use......
For loose fasteners Before each use...
For loose parts Before each use......
Inspect and Clean:
Bar Before each use................
Complete saw After each use.......
Air filter Every 5 hours*.............
Chain brake Every 5 hours*........
Spark arresting screen
and muffler Every 25 hours*.........
Replace spark plug Yearly.
Replace fuel filter Ye a rly...
*HoursofOperation
BAR MAINTENANCE
If your saw cuts to one side, has to be forced
through the cut, or been run with an improper
amount of bar lubrication it may be necessary to service your bar. A worn bar will damage your 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:
S Move ON/STOP switch to the STOP posi-
tion.
S Loosen and remove chain brake nuts and
chain brake. Remove bar and chain from
saw.
S Clean the oil holes and bar groove after each
5 hours of operation.
Remove Sawdust From
Guide Bar Groove
Oil Holes
S Burring of guide bar rails is a normal
process of rail wear. Remove these burrs
with a flat file.
S When rail top is uneven, use a flat file to re-
store square edges and sides.
Correct GrooveWorn Groove
File Rail Edges
and Sides
Square
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13
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 chain saw.
AIR FILTER
CAUTION:
Do not clean filter in gasoline or
other flammable solvent to avoid creating a
fire hazard or producing harmful evaporative
emissions.
Cleaning the air filter:
A dirty air filter decreases engine performance and increases fuel consumption and
harmful emissions. Always clean after every
5 hours of operation.
1. Clean the cover and the area around it to
keep dirt and sawdust from falling into
the carburetor chamber when the cover
is removed.
2. Remove the parts as illustrated below.
3. Wash the filter in soap and water. Rinse
in clean cool water. Air dry completely
before reinstalling.
4. Add a few drops of oil to the filter;
squeeze filter to distribute oil.
5. Reinstall parts.
Air Filter
Cylinder Cover
Screws
Cylinder
Cover
SPARK PLUG
The spark plug should be replaced each
year to ensure the engine starts easier and
runs better. Ignition timing is fixed and nonadjustable.
1. Loosen 3 screws on cylinder cover.
2. Remove the cylinder cover.
3. Pull off the spark plug boot.
4. Remove spark plug from cylinder and
discard.
5. Replace with Champion RCJ --7Y spark
plug and tighten securely with a 19 mm
socket wrench. Spark plug gap should
be 0,5 mm.
6. Reinstall the spark plug boot.
7. Reinstall the cylinder cover and 3
screws. Tighten securely.
Screws
Spark
Plug Boot
Spark
Plug
Cylinder
Cover
WARNING: Disconnect the spark
plug before performing maintenance, service or adjustments, except for carburetor
adjustments.
CHAIN SHARPENING
Chain sharpening is a complicated task that
requires special tools. We recommend that
you refer chain sharpening to a professional
chain sharpener.
CARBURETOR ADJUSTMENT
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.
The carburetor has been carefully set at the
factory. Adjustments may be necessary if
you notice any of the following conditions:
S Chain moves at idle. See IDLE SPEED-- T
adjusting procedure.
S Saw will not idle. See IDLE SPEED-- T ad-
justing procedure.
Idle Speed-- T
Allow engine to idle. If the chain moves, idle
is too fast. If the engine stalls, idle is too slow.
Adjust speed until 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 bulb and is labeled T.
S Turn idle speed screw (T) clockwise to in-
crease engine speed.
S Turn idle speed screw (T) counterclock-
wise to decrease engine speed.
STORAGE
WARNING: Stop engine and allow to
cool, and secure the unit before storing or
transporting in a vehicle. Store unit and fuel
in an area where fuel vapors cannot reach
sparks or open flames from water heaters,
electric motors or switches, furnaces, etc.
Store 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.
S Before storing, drain all fuel from the unit.
Start engine and allow to run until it stops.
S Clean the unit before storing. Pay particu-
lar attention to the air intake area, keeping
it free of debris. Use a mild detergent and
sponge to clean the plastic surfaces.
S Do not store the unit or fuel in a closed area
where fuel vapors can reach sparks or an
open flame from hot water heaters, electric
motors or switches, furnaces, etc.
S Store in a dry area out of the reach of chil-
dren.
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.
Page 14
14
TROUBLE CAUSE REMEDY
Engine will not
start or will run
only a few
seconds after
starting.
1. Ignition switch off.
2. Engine flooded.
3. Fuel tank empty.
4. Spark plug not firing.
5. Fuel not reaching
carburetor.
1. Move ignition switch to ON.
2. See “Difficult Starting” in
Operation Section.
3. Fill tank with correct fuel mixture.
4. Install new spark plug.
5. Check for dirty fuel filter; replace.
Check for kinked or split fuel line;
repair or replace.
Engine will
not idle
properly.
1. Idle speed requires
adjustment.
2. Carburetor requires
adjustment.
1. See “Carburetor Adjustment” in the
Service and Adjustments Section.
2. Contact an authorized service dealer.
1. Air filter dirty.
2. Spark plug fouled.
3. Chain brake engaged.
4. Carburetor requires
adjustment.
Engine will not
accelerate,
lacks power,
or dies under
a load.
1. Clean or replace air filter.
2. Clean or replace plug and regap.
3. Disengage chain brake.
4. Contact an authorized service dealer.
Engine
smokes
excessively.
1. T oo much oil mixed with
gasoline.
1. Empty fuel tank and refill with
correct fuel mixture.
WARNING: Always stop unit and disconnect spark plug before performing all of
the recommended remedies below except remedies that require operation of the unit.
TROUBLESHOOTING TABLE
Chain moves
at idle speed.
1. Idle speed requires
adjustment.
2. Clutch requires repair.
1. See “Carburetor Adjustment” in the
Service and Adjustments Section.
2. Contact an authorized service dealer.
Page 15
15
TECHNICAL DATA SHEET
MODEL: Partner 350
ENGINE
Cylinder volume, cm
3
36
Stroke, mm 32
Idle speed, rpm 3,000
Recommended max speed, unloaded, rpm 13,000
Power, kW 1,4
IGNITION SYSTEM
Manufacturer Walbro
Type of ignition system CD
Spark plug Champion
Electrode gap, mm 0,5
FUEL AND LUBRICATION SYSTEM
Manufacturer Walbro
Carburetor type WT-- 662
Fuel capacity, litre 0,38
Oil pump capacity at 8,500 rpm ml/min 4 -- 8
Oil capacity, litre 0,2
Type of oil pump Automatic
WEIGHT
Without bar and chain, kg 4,7
NOISE LEVELS (See note 1)
Equivalent noise pressure level at operator’s ear,
measured according to relevant international standards, dB(A) 103
Equivalent noise power level, measured according
to relevant international standards, dB(A) 111
Recommended limit of usage a day, minutes
(SanPiN 2.2.2.540--96) 152
CHAIN/BAR
Standard bar length, inches/cm 14″/36 16″/41
Recommended bar length, inches/cm 14″/36 16″/41
Usable cutting length, inches/cm 13,5″/35 15,5″/40
Chain speed at max. power, m/sec 19
Pitch, cm 0,952
Thickness of drive link, mm 1,27
Number of teeth on drive sprocket 6
Maximum Bar Tip Radius 7T
Chain type Oregon 91VJ/VG
Note 1: Equivalent noise level is, according to ISO 22868, calculated as the time-weighted
energy total for noise levels under various working conditions with the following time
distribution: 1/3 idle, 1/3 full load, 1/3 full speed.
0,375
85° 30°
0°
14/36:52
16/41:56
0,050/1,3 5/32 / 4,0 0,025/0,65
91VJ
in/cm :dl
91VG
0,375
0,050/1,3
5/32 / 4,0
85°
30°
0° 0,025/0,65
14/36:52
16/41:56
ADDRESS: Husqvarna Outdoor Products Italia S.p.A
Via Como 72
Valmadrera, Lecco
ITALY I--23868
Page 16
16
Husqvarna Outdoor Products Italia S.p.A.
Via Como 72
Valmadrera, Lecco
ITALY I--23868
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