Homelite UT74121A User Manual
OPERATOR’S MANUAL
356 mm (30 ft.) 33cc Chainsaw
CSP3314
Model No. UT74121A
Your new chainsaw has been engineered and manuf actured to Homelite’s high standard for dependability , ease of operation
and operator safety. Properly cared for , it will give you y ears of rugged, trouble-free performance.
WARNING: T o reduce the risk of injury, the user must read and understand the operator’s manual.
Thank you for b uying a Homelite chainsaw.
SAVE THIS MANUAL FOR FUTURE REFERENCE
TABLE OF CONTENTS
Introduction ..................................................................................................................................................................... 2
General Safety Rules ................................................................................................................................................... 3-4
Specific Safety Rules................................................................................................................................................... 5-6
Symbols....................................................................................................................................................................... 7-8
Specifications ................................................................................................................................................................. 8
Features.......................................................................................................................................................................... 9
Operation ..................................................................................................................................................................10-24
Maintenance .............................................................................................................................................................25-35
Bar and Chain Combination ........................................................................................................................................... 36
Troubleshooting .........................................................................................................................................................36-37
Warranty........................................................................................................................................................................ 38
Safety Directive ............................................................................................................................................................ 38
INTRODUCTION
IMPORTANT
Servicing requires extreme care and knowledge and should
be performed only by a qualified service technician. When
servicing use only identical Homelite replacement parts.
For safe operation, read and understand all instructions
before using the chainsaw. Follow all safety instructions.
Failure to follow all safety instructions listed below may
result in serious personal injury.
WARNING:
Carefully read through this entire operator’s manual
before using your new saw. Pay close attention to the
Safety Rules and all Safety Alert Symbols including
Danger, Warning and Caution. These safety rules are
for your safety and to prevent possible serious injury.
If you use your saw properly and only for what it is
intended, you will enjoy years of safe, reliable service.
Look for this symbol to point out important safety precautions.
It means attention!!! Your safety is involved.
WARNING:
The operation of any tool may result in foreign objects being thrown into the eyes, which can
result in severe eye damage. Before beginning tool operation, always wear safety goggles or
safety glasses with side shields and a full face shield when needed. We recommend Wide
Vision Safety Mask for use over glasses or standard safety glasses with side shields. Always
wear eye protection.
UK - Page 2
GENERAL SAFETY RULES
WARNING:
The warnings, labels and instructions found in this
section of the operator’s manual are for your safety.
Failure to follow all instructions may result in serious
personal injury.
Safe operation of this tool requires that you read and
understand this operator’s manual and all labels affixed to
the tool. Safety is a combination of using common sense,
staying alert, and knowing how your saw works.
READ ALL INSTRUCTIONS
KNOW YOUR TOOL. Read the operator’s manual carefully.
Learn the saw’s applications and limitations as well as
the specific potential hazards related to this tool.
CHAINSAWS are designed f or cutting wood only .
KICK-BACK 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 sa w 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 e xclusiv ely upon
the safety devices built into your saw. As a chainsaw
user, you should take several steps to k eep cutting jobs
free from accident or injury .
1. With a basic understanding of kick-back, you can
reduce or eliminate the element of surprise. Sudden
surprise contributes to accidents.
2. Keep a good firm grip on the saw with both hands
when the engine is running. Place your right hand on
the rear handle and your left hand on the front handle,
with thumbs and fingers encircling the chainsaw
handles. A firm grip together with a stiff left arm will
help maintain control of the saw if kick-back occurs.
3. Make sure the area in which you are cutting is free from
obstructions. DO NOT let the nose of the guide bar
contact a log, branch, fence or any other obstruction
which could be hit while you are operating the sa w .
4. Cut at high engine speeds. Always cut with the
engine running at full speed. Fully squeeze the
throttle trigger and maintain a steady cutting speed.
5. Do not overreach or cut above shoulder height.
6. Follow the manufacturer’s sharpening and
maintenance instructions for the saw chain.
7. Only use replacement bars and chains specified by
the manufacturer or the equivalent.
DO NOT OPERATE A CHAINSAW WITH ONE HAND.
Serious injury to the operator, helpers and/or bystanders
may result from one-handed operation. A chainsaw is
intended for two-handed use.
DO NOT OPERATE A CHAINSAW WHEN YOU ARE
FATIGUED. Never operate a chainsaw when y ou are tired
or under the influence of medication, drugs or alcohol.
USE SAFETY FOOTWEAR. Wear snug-fitting clothing,
protective gloves and eye, hearing and head protection
devices.
DO NOT STAND ON ANY UNSTABLE SURFACE while
using your chainsaw. This includes ladders , scaff olding,
trees etc.
USE CAUTION WHEN HANDLING FUEL. Move the
chainsaw at least 9 m (30 feet) from the refuelling point
before starting the engine.
DO NOT ALLOW OTHER PERSONS to be near the
chainsaw when starting or cutting with the chainsaw .
Keep bystanders and animals out of the w ork area.
DO NOT START CUTTING until you have a clear work
area, secure footing and a planned retreat path from the
falling tree.
UK - Page 3
GENERAL SAFETY RULES
KEEP ALL PARTS OF YOUR BODY awa y from the saw
chain when the engine is running.
ALWAYS CARRY THE CHAINSAW WITH THE ENGINE
STOPPED AND THE BRAKE ENGAGED, the guide bar
and saw chain to the rear, and the silencer a w a y from
your body . When transporting the chainsaw , use the
appropriate guide bar scabbard.
DO NOT OPERATE A CHAINSAW THAT IS DAMAGED,
improperly adjusted, or not completely and securely
assembled. Be sure that the saw chain stops moving
when the throttle control trigger is released.
TURN OFF THE ENGINE before putting the chainsaw down.
DO NOT leave the engine running unattended. As an
additional safety precaution, apply the chain brake
before putting down the sa w .
USE EXTREME CAUTION when cutting small-size brush
and saplings because slender material may catch the saw
chain and be whipped towards you or pull you off balance.
WHEN CUTTING A LIMB under tension, be alert for
spring-back so that you will not be struck when the
tension in the wood fibres is released.
KEEP THE HANDLES dry, clean and free of oil or
fuel mixture.
OPERATE THE CHAINSAW ONLY in well ventilated areas.
DO NOT OPERATE A CHAINSAW IN A TREE unless
you have been specifically trained to do so .
ALL CHAINSAW SERVICE, other than the items listed
in the instruction manual, and all maintenance should
be performed by competent chainsaw service personnel.
(For example, if improper tools are used to remove the
flywheel or if an improper tool is used to hold the flywheel
in order to remove the clutch, structural damage to the
flywheel may occur and subsequently cause the flywheel
to burst.)
KEEP ALL PARTS OF YOUR BODY away from the saw
chain when the engine is running.
KEEP SAFE-T-TIP ANTI-KICK-BACK NOSE GUARD
properly mounted on the guide bar to prevent rotational
kick-back.
FOLLOW THE SHARPENING and maintenance instructions
for the saw chain.
USE ONLY THE REPLACEMENT GUIDE BARS and low
kick-back chains specified for your saw.
DO NOT adapt the power head to a bow guide or use it to
power any attachments or devices not listed for your saw.
SAVE THESE INSTRUCTIONS. Refer to them frequently
and use to instruct other users. If you lend someone this
tool, lend them these instructions too.
UK - Page 4
SPECIFIC SAFETY RULES
WARNING:
The warnings, labels and instructions found in this
section of the operator’s manual are for your safety.
Failure to follow all instructions may result in serious
personal injury.
GENERAL PRECAUTIONS
DO NOT CUT VINES and/or small underbrush (less than
76 mm (3 in.) in diameter).
SILENCER SURFACES ARE VERY HOT during and
after operation of the chainsaw; keep all body parts
away from the silencer. Serious burns may occur if
contact is made with the silencer.
ALWAYS HOLD THE CHAINSAW WITH BOTH HANDS
when the engine is running. Use a firm grip with thumbs
and fingers encircling the chainsaw handles.
NEVER LET ANYONE USE YOUR CHAINSAW who has
not received adequate instructions in its proper use.
This applies to hired as well as privately owned saws.
BEFORE YOU START THE ENGINE, make sure the saw
chain is not contacting any object.
OPERATE THE CHAINSAW only in well ventilated areas.
SAFETY APPAREL
Wear snug-fitting clothing. Always wear heavy, long
trousers, boots and gloves. Do not wear jewellery, shorts,
sandals, or go barefoot. Do not wear loose-fittingclothing,
which could be drawn into the engine or catch the chain
or underbrush. Wear overalls, jeans or chaps made of
cut-resistant material or ones that contain cut-resistant
inserts. Secure hair so that it is above shoulder level.
Wear non-slip safety footwear and heavy-duty gloves to
improve your grip and to protect your hands.
Wear eye, hearing and head protection when operating
this equipment.
REFUELLING (DO NOT SMOKE!)
To reduce the risk of fire and burn injury, handle fuel with
care. It is highly flammable.
Mix and store fuel in a container approved for petrol.
Mix fuel outdoors where there are no sparks or flames.
Select bare ground, stop the engine, and allow it to cool
before refuelling.
Loosen the fuel cap slowly to release pressure and to
keep fuel from escaping round the cap.
Tighten the fuel cap securely after refuelling.
Wipe spilled fuel from the unit. Move 9 m (30 ft.) away
from refuelling site before starting engine.
Never attempt to burn off spilled fuel under any
circumstances.
BASIC PRECAUTIONS IN THE CUTTING/
WORK AREA
Do not operate a chainsaw in a tree.
Do not cut from a ladder: this is extremely dangerous.
Keep b ystanders and animals out of the work area.
Do not allow other persons to be nearby during starting
or cutting with the chainsaw .
NOTE: The size of the work area depends on the job
being performed, as well as the size tree or work piece
involv ed. For example, felling a tree requires a larger work
area than making other cuts such as bucking cuts etc.
UK - Page 5
SPECIFIC SAFETY RULES
PUSH AND PULL
The reaction force is always opposite to the direction the
chain is moving. Thus, the operator m ust be ready to control
the PULL when cutting on the bottom edge of the bar and
the PUSH when cutting along the top edge.
PULL
PUSH
Fig. 1
NOTE: Your chainsaw has been fully factory tested.
It is normal to find some slight oil residue on the saw.
MAINTENANCE PRECAUTIONS
Never operate a chainsaw that is damaged, improperly
adjusted, or is not completely and securely assembled.
Be sure that the saw chain stops moving when the throttle
control trigger is released. If the saw chain moves at idling
speed, the carburettor may need adjusting. Refer to
“Operation-Adjusting Idling Speed” later in this manual.
If the saw chain still moves at idling speed after adjustment
has been made, contact a Homelite service dealer for
adjustment and discontinue use until the repair is made.
WARNING:
All chainsaw service, other than items in the operator’s
manual maintenance instructions, should be performed
by competent chainsaw service personnel. If improper
tools are used to remove the flywheel or clutch, or if an
improper tool is used to hold the flywheel in order to
remove the clutch, structural damage to the flywheel
may occur and subsequently cause the flywheel to burst
with possible serious injury.
KICK-BACK
Kick-back is a dangerous reaction that can lead to serious
injury. Do not rely only on the safety devices provided with
your saw. As a chainsaw user, you must take special
safety precautions to help keep cutting jobs free from
accident or injury.
NOTE: Refer to “Operation” later in this manual for added
information on kick-back and how to avoid serious
personal injury.
UK - Page 6
SYMBOLS
Important: Some of the following symbols may be used on your tool. Please study them and learn their meaning.
Proper interpretation of these symbols will allow you to operate the tool better and more safely.
SYMBOL NAME EXPLANATION
Safety Alert Symbol
Read Your Operator’s Manual
Eye, Hearing and Head Protection
SAFE-T-TIP
No Smoking
Operate with Two Hands
®
Nose Guard
Indicates danger, warning or caution. It means
attention!!! Your safety is involved.
Your manual contains special messages to bring attention
to potential safety concerns and machine damage, as well
as helpful operating and servicing information.
Please read all the information carefully to avoid injury
and machine damage.
Wear eye, hearing and head protection when operating
this equipment.
The SAFE-T-TIP® nose guard on the guide bar helps
prevent kick-back.
No smoking, sparks or open flame.
Hold and operate the saw properly with both hands.
RUN
“O”
STOP
One Handed
Carbon Monoxide
Kick-back
Bar Nose Contact
Gloves
Switch
Do not operate the saw using only one hand.
Engines produce carbon monoxide, an odourless, deadly
poison. Do not operate in an enclosed area.
Danger – beware of kick-back.
Avoid bar nose contact.
Wear non-slip gloves.
To stop the engine, move the switch to the “O” STOP
position.
I = ON to Run
O = OFF to Stop
UK - Page 7
SYMBOLS
No Smoking Do not smoke when mixing fuel or filling fuel tank.
Petrol Use unleaded petrol intended for motor vehicle use
with an octane rating of 87 ([R + M] / 2) or higher.
Oil Use 2-cycle oil for air cooled engines.
Mix Petrol and Oil Mix the fuel mix thoroughly and also each time
before refuelling.
SAVE THESE INSTRUCTIONS
SPECIFICATIONS
Weight - No bar, chain, fuel or oil.............................................................................................................. 4.4 kg (9.7 lbs.)
Fuel tank capacity .................................................................................................................................. 575 cm3 (19.4 oz.)
Oil tank capacity..................................................................................................................................... 350 cm3 (11.8 oz.)
Bar lengths ...................................................................................................................................... 33 - 46 cm (12 - 16 in.)
Chain pitch ..............................................................................................................................8.25 mm / 9.5 mm (.375 in.)
Chain gauge............................................................................................................................................ 1.25 mm (.050 in.)
Chain type ......................................................................................................................... Semi-Chisel, LoPro, Skip Tooth
Drive sprocket ...................................................................................................................................................6 / 7 - tooth
Engine displacement ..............................................................................................................................33 cm3 (2.0 cu. in.)
Maximum engine power (ISO 7293)......................................................................................................... 1.33 kW (1.78HP)
Maximum engine speed with attachment ..........................................................................................................12,500/min
Idle engine speed....................................................................................................................................2,600 - 3,400/min
Sound pressure level (ISO 7182) .................................................................................................................99.4 LpA / dBA
-1
-1
Sound power level (ISO 9207) ................................................................................................................ 112.0 LwA / dBpA
Vibration (ISO 7505):
Front Handle....................................................................................................................................................... 4.3 M/S
Rear Handle...................................................................................................................................................... 10.7 M/S
UK - Page 8
2
2
FEATURES
TRIGGER
RELEASE
THROTTLE LOCK
BUTTON
CYLINDER
COVER
PRIMER BULB
FRONT HAND
GUARD/CHAIN
FRONT
HANDLE
CHOKE LEVER
BRAKE
STARTER
GRIP
SILENCER
CHAIN
CATCHER
CHAIN OIL
CAP
SAFE-T-TIP
CARBURETTOR
ADJUSTMENT
STARTER/FAN
HOUSING
ON/OFF
SWITCH
UK - Page 9
FUEL MIX
CAP
THROTTLE
TRIGGER
REAR
HANDLE
Fig. 2
OPERATION
For your saf ety, study this entire manual before operating
the saw . Pay particular attention to the precautions and
instructions listed in the operator’s manual.
SAFE-T-TIP
WEAR HEAD
PROTECTION
WEAR HEARING
PROTECTION
WEAR “NON-SLIP”
GLOVES
WEAR TRIM-FITTING CLOTHING. AVOID SCARVES OR
OTHER LOOSE CLOTHING WHICH COULD GET CAUGHT
IN THE MACHINE
WEAR EYE
PROTECTION
WEAR HEAVY
DENIM OR
CHAPS
WEAR STURDY
BOOTS
Fig. 3
Fig. 4
Users, such as professional loggers who need to draw the
tip through the cut, make boring cuts, or cut logs bigger
than the bar length, should reinstall the SAFE-T -TIP as
soon as those cuts are complete. When cutting without the
SAFE-T-TIP, the user must use proper techniques as shown
in the manual to avoid kick-back.
NOTE: Refer to “Maintenance” later in this manual for
instructions on reinstalling the SAFE-T-TIP nose guard.
LOW KICK-BACK SAW CHAIN
The rakers (depth gauges) ahead of each cutter can minimise
the force of a kick-back reaction by preventing the cutters
from digging in too deeply at the kick-back zone. Only use
replacement chain which is equivalent to the original chain
or has been certified as a low
kick-back chain.
As saw chains are sharpened, they lose some of the low
kick-back qualities and extra caution is required.
WARNING:
The warnings and instructions in this section of the
operator’s manual are for your safety and to prevent
serious personal injury.
UNDERSTANDING YOUR CHAINSAW
SAFETY DEVICES
SAFE-T-TIP ANTI-KICK-BACK NOSE GUARD
See Figure 4.
The SAFE-T-TIP prevents kick-back because it covers
the tip of the bar where rotational kick-back is generated.
Inexperienced persons should never attempt to cut when
the SAFE-T-TIP has been removed from the bar tip.
GUIDE BARS
Generally, guide bars with small radius tips hav e some what
lower kick-back potentials.
When making a replacement, be sure to order one of the
Homelite bars listed for your saw in this operator’s manual.
The proper size SAFE-T -TIP nose guard comes installed
on the bar. Use only guide bars which ha v e a provision fo r
mounting the SAFE-T -TIP.
UK - Page 10
OPERATION
CHAIN BRAKE
Chain brakes are designed to quickly stop the chain from
rotating. When the chain brake lever/hand guard is pushed
towards the bar, the chain should stop immediately.
A chain brake does not prevent kick-back.
The chain brake should be cleaned and tested daily. Refer
to “Operation” later in this manual for additional information.
WARNING:
Even with daily cleaning of the mechanism, the
dependability of a chain brake to perform under field
conditions cannot be certified. Keep the SAFE-T-TIP
nose guard on the saw guide bar and use proper
cutting techniques.
RUN POSITION
WARNING:
KICK-BACK occurs when the moving chain contacts
an object at the upper portion of the tip of the guide
bar or when the wood closes in and pinches the saw
chain in the cut. Contact at the upper portion of the
tip of the guide bar may cause the chain to dig into
the object and stop the chain for an instant.
The result is a lightning-fast, reverse reaction which
kicks the guide bar up and back towards the operator.
If the saw chain is pinched along the top of the guide
bar, the guide bar can be driven rapidly back towards
the operator. Either of these reactions may cause
you to lose control of the saw, which could result in
serious injury.
Do not rely exclusively on the safety devices built
into the saw. As a chainsaw user, you should take
several steps to keep your cutting jobs free from
accident or injury.
KICK-BACK PRECAUTIONS
Rotational kick-back occurs when the moving chain contacts
an object at the Kick-bac k Danger Zone of the guide bar .
The result is a lightning-fast, reverse reaction which kicks
the guide bar up and back towards the oper ator.
This reaction can cause loss of control which may result
in serious injury.
BRAKE
POSITION
KICK-BACK
DANGER ZONE
Fig. 6
Fig. 5
ROTATIONAL
KICK-BACK
Fig. 7
UK - Page 11
OPERATION
WARNING:
Always turn off engine before refuelling. Never add
fuel to a machine with a running or hot engine. Move
at least 9 m (30 ft.) from refuelling site before starting
the engine. DO NOT SMOKE! Failure to heed this
warning can result in possible personal injury.
FUEL AND REFUELLING
HANDLING THE FUEL SAFELY
Mix 2% oil into the petrol. This is a 50:1 ratio.
Mix the fuel thoroughly and each time before refuelling.
Mix in small quantities. Do not mix quantities larger than
usable in a 30-day period. A 2-cycle oil containing a fuel
stabiliser is recommended.
WARNING:
Check for fuel leaks. If any are found, correct them
before using the saw to prevent fire or burn injury.
Always handle fuel with care; it is highly flammable.
Always refuel outdoors and do not inhale fuel vapour.
Do not let petrol or oil come in contact with skin.
Keep petrol and oil away from the eyes. If petrol or oil
comes in contact with the eyes, wash them immediately
with clean water. If irritation is still present, see a doctor
immediately.
Clean up spilled fuel immediately.
MIXING THE FUEL
This product is powered by a 2-cycle engine and requires
pre-mixing petrol and 2-cycle oil. Pre-mix unleaded petrol
and 2-cycle engine oil in a clean container approved
for petrol.
This engine is certified to operate on unleaded petrol
intended for motor vehicle use with an octane rating of
87 ([R + M] / 2) or higher.
Do not use any type of pre-mixed petrol/oil from fuel
service stations. This includes the pre-mixed petrol/oil
intended for use in mopeds, motorcycles etc.
Use a high quality 2-cycle self-mixing oil for air-cooled
engines. Do not use motor vehicle oil or 2-cycle
outboard oil.
FILLING THE TANK
Refer to “Specific Safety Rules – Refuelling” earlier in this
manual for additional safety information.
1. Clean the surface round fuel cap to prevent contamination.
2. Loosen the fuel cap slowly.
3. Carefully pour the fuel mixture into the tank. Avoid spillage.
See Figure 8.
4. Before replacing the fuel cap, clean and inspect
the gasket.
5. Immediately replace the fuel cap and hand tighten.
Wipe up any fuel spillage.
NOTE: It is normal for the engine to emit smoke during
and after the first use.
1 Litre + 20 ml =
2 Litres + 40 ml =
3 Litres + 60 ml =
4 Litres + 80 ml =
5 Litres + 100 ml =
}
50:1
UK - Page 12
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