Westinghouse TR18361 User manual

INSTRUCTION MANUAL
TR18361
GASOLINE CHAIN SAW
Note: Before using our chain saws. please read this
manual carefully to understand the proper use of
your unit. Keep this manual handy.
3,000
rpm
ML
550
FUEL TANKFUEL TANK
0.325
CHAINCHAIN
20
INCHES
GUIDE BAR
GUIDE BAR
61
ENGINEENGINE
CC

Instructions contained in warning swith in this manual marked with a symbol
concern critical point swhich must be taken into consideration to prevent possible
serious bodily injury, and fort his reason you are requested to read all such
instructions carefully and follow them without fail.
This mark indicates instructions which must be followed in order to prevent
accident swhich could lead to serio us bodily injury or death.
This mark indicates instructions which must be followed, or it leads to mechanical
failure, breakdown, or damage.
This mark indicates hints or directions useful in the use of the product.
NOTES ON TYPES OF WARNINGS IN THE MANUAL
SAFETY FIRST
WARNING
IMPORTANT
!
NOTE
CONTENTS
1.PARTS LOCATION..............................................................................2
2.WARNING LABELS ON THE MACHINE.............................................2
3.SYMBOLS ON THE MACHINE............................................................3
4.SAFETY PRECAUTIONS....................................................................3
5.INSTALLING GUIDE BAR AND SAW CHAIN.....................................7
6.FUEL AND CHAIN OIL........................................................................9
7.OPERATING ENGINE.........................................................................10
8.SAWING...............................................................................................14
9.MAINTENANCE...................................................................................16
10.MAINTENANCE OF SAW CHAIN AND GUIDE BAR........................18
11.SPECIFICATIONS.............................................................................20

1. PARTS LOCATION
2. WARNING LABELS ON THE MACHINE
(1)Read owner’s manual before operating this machine.
(2)Wear head, eye and ear protection.
(3)Use the chain saw with two hands
(4)Warning! kickback is danger
(5)Warning/Attention
!
1. Front guard
2. Starter knob
3.Air cleaner
4. Choke knob
5. Throttle interlock
6. Rear handle
7. Throttle trigger
8. Engine switch
9. Fuel tank
10. Oil tank
11. Front handle
12. Saw chain
13. Guide Bar

Never remodel the product. We won’t warrant the machine, if you use the
remodeled product or you don’t observe the proper usage written in the
manual.
For safe operation and maintenance, symbols are carved in relief on the machine.
According to these indicafions, please be careful not to make a mistake.
(a).The port to refuel the “MIX GASOLINE”
Position: fuel tank cap
(b).The port to refuel the “CHAIN OIL”
Position: oil cap
(c).The indication regarding the switch. Flipping the engine
switch to the “O” (STOP) direction, the engine stops.
Position: rear-leftof the unit
(d).The indication regarding the choke.
Pulling out the choke knob, the choke closes.
Position: rear-right of the unit
(e).The indication regarding the chain oil adjuster nut.
“MIN” direction-the oil flow decrease
“MAX” direction-the oil flow increase
Position: bottom of the clutch side
(f).The position of H-needle
The position of L-needle
The position of idle adjusting screw
Position: rear-left of the unit
a. Read this owner’s manual carefully to understand
how to operate this unit properly.
b. You should never use the product when under the influence
of alcohol, when suffering from exhaustion or lack of sleep,
when suffering from drowsiness as a result of having
taken cold medicine, or at any other time when a possibility
WARNING
3. SYMBOLS ON THE MACHINE
4. SAFETY PRECAUTIONS
BEFORE USING THE MACHINE
(a)
(b)
(d)
(e)
(f)
(c)

exists that your judgment might be impaired or that you might
not be able to operate the machine properly and in a safe
manner.
c. Avoid running the engine indoors. The exhaust gases contain
harmful carbon monoxide.
d. Never use the product under circumstances like those
described below:
1.When the ground is slippery or when other conditions exist
which might make it not possible to maintain a steady posture
2.At night, at times of heavy fog, or at any other times when
your field of vision might be limited and it would be difficult to
gain a clear view of the area.
3.During rain storms, during lightning storms, at times of strong
or gale-force winds, or at any other times when weather
conditions might make it unsafe to use this product.
e. when using this product for the first time, before beginning
actual work, leam to handling it from skilled worker.
f. Lack of sleep, tiredness, or physical exhaustion results in lower
attention spans, and this in turn leads to accidents and injury.
Limit the amount of time of using the machine continuously
to somewhere around 10 minutes per session, and
take 10~20 minutes of rest between work sessions. Also try to
keep the total amount of work performed in a single day under 2
hours or less.
g. Be sure to keep this manual handy so that you may refer to it
later whenever any questions arise.
h. Always be sure to include this manual when selling, lending, or
otherwise transferring the ownership of the product.
I. Never allow children or anyone unable to fully understand the
directions given in this manual to use this product.
a. When using the product, you should wear proper clothing and
protective equipments as follows.
b. And you should carry with you.
1.Attached tools and files.
2.Properly reserved fuel and chain oil.
(1) Helmet
(2) Protection goggles or face Protector
(3) Thick work gloves
(4) Non-slip-sole work boots
(5) Ear protectors
WORKING GEAR AND CLOTHING

3.Things to notify your working area (Rope, warning signs)
4.Whistle (for collaboration or emergency)
5.Hatchet or saw (for removal of obstacles)
c. Never use the product when wearing pants with
loose cuffs, when wearing sandals, or when barefoot.
a. The engine of this product is designed to run
on a mixed fuel which contains highly flammable
gasoline. Never store cans of fuel or refill
the fuel tank in any place where there is a boiler
stove, wood fire, electrical sparks, welding sparks,
or any other source of heat or fire which might ignite the fuel.
b. Smoking while operating the product or refilling its fuel tank is
extremely dangerous. Always be sure to keep lit cigarettes away from
the product at all times.
c. When refilling the tank always turn off the engine first and take a careful
look around to make sure that there are no sparks or open flames
anywhere nearby before refueling.
d. If any fuel spillage occurs during refueling, use a dry rag to wipe up
spills before turning the engine back on again.
e. after refueling, screw the fuel cap back tightly onto the fuel tank and
then carry the product to a spot 3 m or more away from where it was
refueled before turning on the engine.
Check working place, the cutting object and cutting direction.
If there is obstacle, remove it.
Never start cutting until you have a clear work area, secure footing
and a planned retreat path from the falling tree.
Use caution and keep bystanders and animals out of the working area
whose diameter is 2.5 times of the cutting object.
Inspect the machine for worn, loose, or damaged parts. Never operate
the machine that is damaged, improperly adjusted, or is not completely
and securely assembled. Make sure that the saw chain stops moving
when the throttle control trigger is released.
Always hold the machine firmly with both hands when the engine is
running. Use a firm grip with thumb and fingers encircling the
handles.
Keep all parts of your body away from the machine when the engine
running.
WORKING CONSIDERING HANDLING OF FUEL
BEFORE STARTING ENGINE
WHEN STARTING THE ENGINE

Before starting the engine, make sure the saw chain is not contacting
anything.
Keep the handles dry, clean and free of oil or fuel mixture.
Never touch the muffler, spark plug or other metallic parts of the engine
while the engine is in operation or immediately after stopping the
engine. Doing so could result in serious bums or electrical shock.
Use extreme caution when cutting small size brush and saplings
because slender material may catch the saw chain and be whipped
toward you or pull you off balance.
When cutting a limb that is under tension, be alert for spring back to
that you won’t be struck when the tension in the wood fibers is released
check the tree for dead branches that could fall during the felling
operation.
Always shut of the engine before setting it down.
Kickback may occur when the nose or tip of the guide bar touches
an object, or when the wood closes in and pinches the saw chain in
the cut. Tip contact in some cases may cause a lightning fast
reverse reaction, kicking the guide bar up and back towards the
operator. Pinching the saw chain along the top of the guide bar may
push the guide bar rapidly back towards the operator. Either of
these reactions may cause you to lose control of the saw which
could result in serious personal injury.
Do not rely exclusively on the safely devices built into your saw. As
a chain saw user you should take several steps to keep cutting jobs
free from accident or injury.
With a basic understanding of kickback you can reduce or
eliminate the element of surprise. Sudden surprise contributes
to accidents.
Keep a good grip on the saw with both hands, the right hand
on the rear handle, and the left hand on the front handle,
when the engine is running. Use a firm grip with thumbs and
fingers encircling the chain saw handles. A firm grip will help
you reduce kickback and maintain control of the saw.
Make certain that the area in which you are cutting is free from
obstructions Do not let the nose of the guide bar contact a log,
branch, or any other obstructions which could be hit while you
are operating the saw.
Cut at high engine speeda.
OPERATION
KICKBACK SAFETY PRECAUTIONS FOR CHAIN SAW USERS
WARNING
!
(1)
(2)
(3)
(4)

Do not overreach or cut above shoulder height.
Follow manufactures sharpening and maintenance
instructions for saw chain.
Only use replacement bars and chains specified by the
manufacturer or the equivalent.
In order to maintain your product in proper working order,
perform the maintenance and checking operations
described in the manual at regular intervals.
Always be sure to turn off the engine before performing
and maintenance or checking procedures.
Leave all maintenance other than the items listed in the
Owner’s Manual to your competent servicing dealer.
Always carry the unit with the engine stopped, the
guide bar covered with the protector to the rare , and
muffler away from your body.
A standard saw unit package contains the items
as the items as illustrated.(F1)
Open the box and instal the guide bar and the
saw chain on the power unit as follows:
(1) P ower unit
(2) B ar protector
(3) G uide bar
(4) C hain saw
(5) P lug wrench
(6) S crewdriver for carburetor adjustment
(7) S pike and mounting screws
(5)
(6)
(7)
The m etallic parts reach high temperatures
immediately after stopping the enging.
MAINTENANCE
TRANSPORTATION
5. INSTALLING GUIDE BAR AND SAW
CHAIN
WARNING
!

The s aw c h ai n h as v er y s harp edges. Us e t hic k
pr otect ive g l oves f or s afet y.
Pull the guard towards the front handle to check
that the chain brake is not on.
loosen the nuts and remove the chain cover.
Install the attached spike to the power unit.
Gear the chain to the sprocket and, while fitting
the saw chain around the guide bar, mount the
guide bar to the power unit. Adjust the position
of chain tensioner nut on the chain cover to the
lower hole of guide bar.(F2)
Pay attention to the correct direction of the saw
chain.(F3)
Fit the chain cover to the power unit and fasten the
nuts to finger tightness.
While holding up the tip of the bar, adjust the chain
tension by turning the tensioner screw until the tie
straps just touch the bottom side of the bar rail.(F4)
Tighten the nuts securely with the bar tip held up
(12~15N.m). Then check the chain for smooth
rotation and proper tension while moving it by hand.
If necessary, readjust with the chain cover loose.
Tighten the tensioner screw.
(8) Hole
(9) Tensioner nut
(10) Chain cover
(1)Moving Direction
(2) Loosen
(3) Tighten
(4) Tensioner screw
1.
2.
3.
4.
5.
6.
7.
8.
NOTE
WARNING
!

A new chain will expand its length is the beginning of
use. Check and readjust the tension frequently as a
loose chain can easily derail or cause rapid wear of itself
and the guide bar.
Mix a regular gasoline (leaded or unleaded, alcohol-free)
and a quality-proven motor oil for air cooled 2 cycle
engines.
Keep open flames away from the area where fuel is
handled or stored.
Mix and store fuel only in an approved gasoline
container.
Most engine troubles are caused, directly or indirectly,
by the fuel used on the machine. Take special care not
to mix a motor oil for 4 cycle engines.
Use motor oil SAE# 10 W ~30 all year round
or SAE #30~#40 in summer and SAE# 20 in
winter.
Do not use wasted or regenerated oil that
can cause damage to the oil pump.
6. FUEL AND CHAIN OIL
CHAIN OIL
FUEL
Recommended mixing ratio:
Condition Gasoline : Oil
Up to 20 hours use 20:1
After 20 hours use 25:1
Gasoline liters 1 2 3 4 5
2-cycle oil ml. 40 80 120 160 200
25:1 Mix Chart
NOTE
NOTE
NOTE
WARNING
!

Fill fuel and chain oil tanks respectively,
and tighten the caps securely.(F7)
Put the switch to “l” position.(F8)
While holding the throttle lever together with the
throttle interlock, push in the side throttle lock button
and release the throttle lever to hold it at the starting
position.(F9)
(1) Chain oil
(2) Fuel
(3) Switch
(4) Throttle lever
(5) Throttle interlock
(6) Choke knob
Pull out the choke knob to the closed position.(F10)
When restarting immediately after stopping the
engine, leave the choke knob at the open position.
While holding the saw unit securely on the
ground, pull the starter rope vigorously.(F11)
Do not start the engine while hanging the chain
saw with a hand. The saw chain may touch your
body. It’s very dangerous.
When engine has ignited first, push in the choke
knob and pull the starter again to start the engine
Allow the engine to warm up with the throttle lever
pulled slightly.
Keep clear of the saw chain as it will start
rotating upon starting of engine.
After starting the engine. run the chain at medium
speed and see if chain oil is scattered off as shown
7. OPERATING ENGINE
STARTING ENGINE
CHECKING OIL SUPPLY
1.
2.
3.
4.
5.
6.
7.
F7
F8
F9
F10
F11
F12
NOTE
(3)
(4)
(5)
(6)
WARNING
!
WARNING
!

in the figure.(F12)
(1)Chain oil
The chain oil flow can be changed by inserting
a screwdriver in the hole on bottom of the clutch
side. Adjust according to your work conditions.
(F13)
The oil tank should become nearly empty by the
time fuel is used up. Be sure to refill the oil tank
every time when refueling the unit.
The carburetor on your unit has been factory
adjusted, but may require fine tuning due to change
in operating conditions. Before adjusting the
carburetor, make sure that provided are clean
air/fuel filters and fresh, properly mixed fuel. When
adjusting, take the following steps:
Be sure to adjust the carburetor with the
bar chain attached
1.Stop engine and screw in both H and L
needles until they stop. Never force. Then set them
back the initial number of turns as shown below.
Start engine and allow it to warm up at
half-throttle.
Turn L needle slowly clockwise to find a position
where idling speed is maximum, then set the
needle back a quarter(1/4) turn
counterclockwise.
Turn idle adjusting screw(T) counterclockwise
to that saw chain does not turn. If idling speed is
too slow, turn the screw clockwise.
ADJUSTING CARBURETOR(F14)
(1) Adjuster
3
H needle: 1 /8
1
L needle: 1 /4
2.
3.
4.
NOTE
NOTE
F13
F14

5. Make a test cut and adjust the H needle for best
cutting power, not for maximum speed.
(1) L needle
(2) H needle
(3) Idle adjusting screw
Operating the chain saw in temperatures of 0-5°C
at times of high humidity may result in ice forming
within the carburetor, and this in turn may cause
the output power of the engine to be reduced or
for the engine to fail to operate smoothly. This
product has accordingly been designed with a
ventilation hatch the back of the air cleaner cover
to allow warm air to be supplied to the engine and
to there by prevent icing from occurring.
Under normal oircumstances the product should
be used in normal operating mode, i.e., in the
mode to which it is set at the time of shipment.
However when the possibility exists that icing may
occur, the unit should be set to operate in
anti-freeze mode before use.(f15)
Flip the engine switch to turn off the engine.
Remove the air cleaner cover from the
cylinder cover
Loosen a screw and remove the screen on the
back of the air cleaner cover.
Reattach the screen right side left so as to the
anti-icing plate is on the right. Reinstall the
cover.
(1) Air cleaner cover
(2) Anti-icing plate
(3) Screw
(4) Normal operating mode
(5) Anti-freeze mode
(6) Screen
CARBURETOR ANTI-FREEZE MECHANISM
HOW TO SWITCH BETWEEN OPERATING
MODES (F15)
1.
2.
3.
4.
F15

Continuing to use the product in anti-freeze
mode even when temperatures have risen
and returned to normal may result in the
engine failing to start properly or in the
engine failing to operate at its normal speed,
and for this reason you should always be
sure to return the unit to normal operating
mode if there is no danger of icing occurring.
When using the saw with the anti-freeze mode,
frequently check the screen and keep it clean of
saw dust.
This machine is equipped with an automatic brake to
stop saw chain rotation upon occurrence of kickback
while in saw cutting operation. The brake is
automatically operated by inertial force which acts on
the weight fitted inside the front guard. This brake can
also be operated manually with the front guard turned
down to the guide bar.(F16)
To release brake, pull up the front guard toward the
front handle till”click”sound is head.
Be sure to confirm brake operation on the daily
inspection
How to confirm
(1)Turn off the engine.
(2)Holding the chain saw horizontally, release your
hand from the front handle, hit the tip of the guide bar
to a stump or a piece of wood, and confirm brake
operation. Operating level varies by bar size.(F17)
In case the brake is not effective, ask our dealer
inspection and repairing. The engine, If being dept
rotated to high speed with the brake engaged, heats
the clutch, causing a trouble, When the brake is
operated while in operation, immediately release
your fingers from the throttle lever and keep the
engine idling.
1.Release the throttle lever to allow the engine idling
CHAIN BRAKE
STOPPING ENGINGE
[Caution]
F16
F17
WARNING
!

for a few minutes.
2.Put the switch to the “O” (STOP) position.(F18)
(1) Switch
Before proceeding to your job, read
Operation” section. It is recommended to first
practice sawing easy logs. This also helps you
get accustomed to your unit.
Always follow the safety regulations. The chain
saw must only be used for cutting wood. It is
forbidden to out other types of material.
Vibrations and kickback vary with different
materials and the requirements of the safety
regulations would not be respected. Do not use
the chain saw as a lever for lifting, moving or
splitting objects. Do not lock it over fixed
stands. It is forbidden to hitch tools or
applications to the P.t.o. that are not specified
by the manufacturer.
It is not necessary to force the saw into the cut.
Apply only light pressure while running the
engine at full throttle.
When the saw chain is caught in the cut, do not
attempt to pull it out by force, but use a wedge
or a lever to open the way.
“For Safe
This saw is equipped with a chain brake that will
stop the chain in the event of kickback if operating
properly. You must check the chain brake operation
before each usage by running the saw at full the
throttle for 1-2 seconds and pushing the front hand
guard forward. The chain should stop immediately
with the engine at full speed. If the chain is slow to
stop or does not stop, replace the brake band and
clutch drum before use.
GUARD AGAINST KICKBACK (F19)
8.SAWING
F19
F18
(1)
WARNING
!

It is extremely important that the chain brake be
checked for proper operation before each use and
that the chain be sharp in order to maintain the
kickback safety level of this saw. Removal of the
safety devices. Inadequate maintenance, or
incorrect replacement of the bar or chain may
increase the risk or serious personal injury due to
kickback.
Decide the felling direction considering
the wind, lean of the tree, location of heavy
branches, ease of job after felling and other
factors
While clearing the area around the tree, arrange
a good foothold and retreat path.
Make a notch cut one-third of the way into the
tree on the felling side.
Make a felling cut from the opposite side of the
notch and at a level slightly higher than the
bottom of the notch.
Before starting work, check the direction of bending
force inside the log to be cut. always finish cutting
from the opposite side of bending direction to prevent
FELLING A TREE(F20)
1.
2.
3.
4.
Bucking and Limbing
F20
Be alert to the rolling over of a cut log.
Especially when working on a slope, stand on
the uphill side of the log.
Follow the instructions in”For safe Operation”
to avoid kickback of the saw.
Always ensure your foothold. Do not stand on
the log.
When you fell a tree, be sure to warn your
neighboring workers of the danger.
(1) Notch cut
(2) Felling cut
(3) Felling direction
WARNING
!
WARNING
!

the guide bar from being caught in the cut.
Saw down halfway, then roll the
log over and cut from the opposite side.
In area A, saw up from the bottom one-third and
finish by sawing down from the top. In area B, saw
down from the top one-third and finish by sawing up
from the bottom.
First check to which side the limb is bent.
Then make the initial cut from the bent side and
finish by sawing from the opposite side.
Be alert to the springing back of a cut limb.
Pruning of Standing Tree(F24)
Cut up from the bottom, finish down from the top.
Do not use an unstable foothold or ladder.
Do not overreach.
Dot not cut above shoulder height.
Always use your both hands to grip the saw.
Before cleaning, inspecting, or repairing your
unit, make sure that engine has stopped and is
cool. Disconnect the spark plug to prevent
accidental starting.
Dust on the cleaner surface can be removed by
tapping a corner of the cleaner against a hard
surface. To clean dirt in the meshes, split the cleaner
in. o halves and brush in gasoline. When using
compressed air, blow from the inside.(F25)
Dismount the guide bar and check the
A L o g l y i n g o n t h e g r o u n d (F21)
A L o g h an g i n g o f f t h e g r o u n d (F22)
Cu t t i n g L i m b o f Fal l en Tr ee (F23)
1.A i r f i l t er
2.Oi l i n g p o r t
MAINTENANCE AFTER EACH USE
9. MAINTENANCE
F21
F22
F23
F24
F25
WARNING
!
WARNING
!
WARNING
!

oiling pot for clogging.(F26)
When the guide bar is dismounted, remove
Saw dust in the bar groove and the oiling port.(F27)
Grease the nose sprocket from the feeding
port on the tip of the bar.(F28)
Check for fuel leakage and loose fastenings and
damage to major parts.
especially handle joints and guide bar mounting. If
any defects are found, make sure to have them
repaired before operating again.
Dust clogging between the cylinder fins will cause
overheating of the engine Periodically check and
clean the cylinder fins after removing the air
cleaner and the cylinder cover.
When installing the cylinder cover, make sure that
switch wires and grommets are positioned
correctly in place.(F29)
Be sure to black the air intake hole.
Clean the electrodes with a wire brush and reset the
gap to 0.65 mm as necessary.
Check for cracks and for excesslve wear interfering
with the chain drive. If the wearing is found
obviously, replace it with new one. Never fit a new
chain on a worn sprocket, or a worn chain on a
new sprocket.
(1) O i l in g p ort
(2) G rease p or t
(3) S pr oc k et
3. Gui de b ar
4. Others
1. Cyl ind er f ins
2. Spark p lu g(F30)
3. Sp roc ket(F31)
PERIODICAL SERVICE POINTS
NOTE
F26
F27
F28
F29
F30
F31

WARNING
!
WARNING
!
(2) N eedl e b earin g
(3) C l ut ch d r um
(4) S pacer
(5) C l ut ch s h oe
4. Fuel f il ter
5. Oil f i lt er
6. Fro nt and Rear d amper s
Disassemble the filter and wash with gasoline, or
replace with new on if needed.
Disassemble the filter and wash with gasoline, or
replace with new on if needed.
Replace if adhered part is peeled or crack is
observed on the rubber part.
It is very important for smooth and safe
operation to keep the cutters always sharp.
Your cutters need to be sharpened
when:
Sawdust becomes powder-like.
You need extra force to saw in.
The cut way does not go straight
Vibration increases
Fuel consumption increases
Be sure to wear safety gloves.
Make sure the saw chain in held
sccurely
Make sure the engine is stopped
Use a round file of proper size for
your chain.
Chain type: 21VB
File size: 3/16 in (4.76 mm)
Before filing:
SAW CHAIN
10.MAINTENANCE OF SAW CHAIN
AND GUIDE BAR.
Cutt er s ettin g s tandards :
(1) S pr oc k et

Place your file on the cutter and push
straight forward. Keep the file position
as illustrated.(F32)
After every cutter has been set, check
the depth gauge and file it to the proper
level as illustrated.(F33)
Be sure to round off the front edge to
reduce the chance of kickback or tie-strap
breakage.
Make sure every cutter has the same
length and edge angles as illustrated (F34)
Reverse the bar occasionally to
prevent partial wear.
The bar rail should always be a square.
Check for wear of the bar rail. Apply a ruler to
the bar and the outside of a cutter. If a gap is
observed between them the rail is normal.
Otherwise, the rail is worn. Such a bar needs
to be corrected or replaced.(F35)
GUIDE BAR
F32
F33
F34
F35
(1) Ruler
(2) Gap
(3) No gap
(4) Chain tilts
(4) Cutter length
(5) Filling angle
(6) Side plate angle
(7) Top plate cutting angle
(1) Appropriate gauge checker
(2) Make the shoulder round
(3) Depth gauge standard
WARNING
!