Homelite CSP4520 - UT74127A, CSP4518 - UT74125A, CSP3816 - UT74123A User Manual

5 (1)

OPERATOR’S MANUAL

CSP3816 - UT74123A - 406 mm 16 in. 38cc Chainsaw

CSP4518 - UT74125A - 457 mm 18 in. 45cc Chainsaw

CSP4520 - UT74127A - 508 mm 20 in. 45cc Chainsaw

Your new chainsaw has been engineered and manufactured to Homelite’s high standard for dependability, ease of operation and operator safety. Properly cared for, it will give you years of rugged, trouble-free performance.

WARNING: To reduce the risk of injury, the user must read and understand the operator’s manual.

Thank you for buying 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 .................................................................................................................................................................

9

Features ........................................................................................................................................................................

10

Operation ..................................................................................................................................................................

11-25

Maintenance .............................................................................................................................................................

26-36

Bar and Chain Combination ...........................................................................................................................................

37

Troubleshooting .........................................................................................................................................................

37-38

Warranty ........................................................................................................................................................................

39

Safety Directive ............................................................................................................................................................

39

 

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 can result in foreign objects being thrown into the eyes, which may cause severe eye injury. 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 for 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 toward 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 safety devices built into the saw. As a chainsaw user, you should take several steps to keep 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 you maintain control of the saw if kick-back occurs.

3.Make sure 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, fence or any other obstruction which could be hit while you are operating the saw.

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 you 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, scaffolding, trees etc.

USE CAUTION WHEN HANDLING FUEL. Move the chainsaw at least 9 m (25 ft) 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 work 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 away 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 away 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 saw.

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 under tension, be alert for spring-back so 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.

KEEPSAFE-T-TIPANTI-KICK-BACKNOSEGUARD 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 your 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 fitting clothing 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 (25 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 bystanders 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 involved. 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 must 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 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” 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 could occur which could subsequently cause the flywheel to burst with possible serious injury.

KICK-BACK

Kick-back is a dangerous reaction which may 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 your cutting jobs free from accident or injury.

NOTE: See the “Operation” section 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

 

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

 

 

 

 

 

 

 

 

 

 

 

 

Read Your Operator’s Manual

 

damage, as well as helpful operating and servicing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

information. Please read all the information carefully to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

avoid injury and machine damage.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Eye, Hearing and Head Protection

Wear eye, hearing and head protection when operating

 

 

 

 

 

 

 

 

 

 

 

 

this equipment.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SAFE-T-TIP® Nose Guard

 

The SAFE-T-TIP® nose guard on the guide bar helps

 

 

 

 

 

 

 

 

 

 

 

 

 

prevent kick-back.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No Smoking

 

No smoking, sparks or open flame.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operate with Two Hands

 

Hold and operate the saw properly with both hands.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OneHanded

 

Do not operate the saw using only one hand.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CarbonMonoxide

 

Engines produce carbon monoxide which is an odourless,

 

 

 

 

 

 

 

 

 

 

 

 

 

deadly poison. Do not operate in an enclosed area.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Kick-back

 

Danger – beware of kick-back.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bar Nose Contact

 

Avoid bar nose contact.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gloves

 

Wear non-slip gloves.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RUN

 

 

 

To stop the engine, move the switch to the “O” STOP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

“O”

Switch

 

position.

 

 

 

 

 

 

 

 

 

 

 

 

I = ON to Run

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STOP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

UK - Page 8

 

 

SPECIFICATIONS

 

 

 

 

 

 

 

 

 

 

 

Weight - No bar, chain, fuel or oil ............................................................................................

 

.................................. 4.4 kg

 

Fuel tank capacity .............................................................................................................

 

.................................... 575 cm3

 

Oil tank capacity .....................................................................................................................................................

 

350 cm3

 

Bar lengths .........................................................................................................................................................

 

33 - 46 cm

 

Chain pitch ............................................................................................................................................................

 

8.25 mm

 

Chain gauge...........................................................................................................................................................

 

1.25 mm

 

Chain type .........................................................................................................................

 

Semi - Chisel, LoPro, Skip Tooth

 

Drive sprocket ........................................................................................................................................................

 

7 - tooth

 

Engine displacement

CSP3816 .....................................................................................

38 cm3

 

 

 

CSP4518 and CSP4520 ..............................................................

45 cm3

 

Maximum engine power ISO 7293)

CSP3816 .....................................................................................

1.6 kW

 

Maximum engine power ISO 7293)

CSP4518 AND CSP4520 .............................................................

1.9 kW

 

Maximum engine speed with attachment ..........................................................................................................

 

12,500 min-1

 

Idle engine speed....................................................................................................................................

 

2,600 - 3,400 min-1

 

Sound pressure level ISO 7182)

CSP3816 ........................................................................

99.4 LpA / dBA

 

 

 

CSP4518 and CSP4520 .................................................

99.4 LpA / dBA

 

Sound power level ISO 9207)

CSP3816 ...................................................................

112.0 LwA / dBpA

 

 

 

CSP4518 and CSP4520 ............................................

112.0 LwA / dBpA

 

Vibration ISO 7505):

 

 

 

 

Front Handle

CSP3816 ..................................................................................

4.3 M/S2

 

 

Rear Handle

CSP3816 ................................................................................

10.7 M/S2

 

 

Front Handle

CSP4518 and CSP4520 ...........................................................

4.3 M/S2

 

 

Rear Handle

CSP4518 and CSP4520 .........................................................

10.7 M/S2

 

UK - Page 9

Homelite CSP4520 - UT74127A, CSP4518 - UT74125A, CSP3816 - UT74123A User Manual

FEATURES

TRIGGER

RELEASE

SILENCER

CHAIN OIL CAP

FRONT HAND GUARD/

CHAIN BRAKE

FRONT

HANDLE

CYLINDER

COVER

CHAIN

CATCHER

CHOKE LEVER

PRIMER BULB

STARTER GRIP

STARTER/FAN HOUSING

ON/OFF SWITCH

FUEL MIX CAP

SAFE-T-TIP®

CARBURETTOR

ADJUSTMENT

REAR

HANDLE

THROTTLE

 

TRIGGER

Fig. 2

 

UK - Page 10

OPERATION

For your safety, study this entire manual before operating the saw. Pay particular attention to the precautions and instructions listed in the operator’s manual.

WEAR EYE

WEAR HEAD PROTECTION

PROTECTION

WEAR HEARING

PROTECTION

HEAVY DENIM WEAR “NON- OR CHAPS

GLOVES

WEAR STURDY

BOOTS

WEAR TRIM-FITTING CLOTHING. AVOID SCARVES OR OTHER LOOSE CLOTHING WHICH COULD GET CAUGHT IN THE MACHINE

Fig. 3

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

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.

SAFE-T-TIP

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.

GUIDE BARS

Generally, guide bars with small radius tips have somewhat 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 that have a provision for mounting the SAFE-T-TIP®.

UK - Page 11

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

BRAKE

POSITION

Fig. 5

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 can 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 toward the operator. Either of these reactions may cause loss of saw control which can result in serious injury.

Do not rely exclusively upon 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-back Danger Zone of the guide bar. The result is a lightning-fast, reverse reaction which kicks the guide bar up and back towards the operator. This reaction may cause loss of control which can result in serious injury.

KICK-BACK DANGER

ZONE

Fig. 6

ROTATIONAL

KICK-BACK

Fig. 7

UK - Page 12

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