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CSP4520 - UT74127A
User Manual
40 pgs2.69 Mb1

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

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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 manuf actured to Homelite’s high standard for dependability, ease of operation and operator safety. Properly cared for , it will giv e you y ears of rugged, trouble-free performance.
WARNING: To reduce the risk of injury , the user must read and understand the operator’s man ual.
Thank you for b uying a Homelite chainsaw.
SAVE THIS MANUAL FOR FUTURE REFERENCE
TABLE OF CONTENTS
Q Introduction ..................................................................................................................................................................... 2
Q General Safety Rules ................................................................................................................................................... 3-4
Q Specific Safety Rules................................................................................................................................................... 5-6
Q Symbols....................................................................................................................................................................... 7-8
Q Specifications ................................................................................................................................................................. 9
Q Features........................................................................................................................................................................ 10
Q Operation ..................................................................................................................................................................11-25
Q Maintenance .............................................................................................................................................................26-36
Q Bar and Chain Combination ........................................................................................................................................... 37
Q Troubleshooting .........................................................................................................................................................37-38
Q Warranty........................................................................................................................................................................ 39
Q 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
Q 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.
Q CHAINSAWS are designed for cutting wood only .
Q 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 ma y cause you to lose control of the sa w, which could result in serious personal injury. DO NOT rely e xclusiv ely 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 mainte-
nance instructions for the saw chain.
7. Only use replacement bars and chains specified by the manufacturer or the equivalent.
Q 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.
Q DO NOT OPERATE A CHAINSAW WHEN YOU ARE
FATIGUED. Never operate a chainsa w when you are tired or under the influence of medication, drugs or alcohol.
Q USE SAFETY FOOTWEAR. Wear snug-fitting clothing,
protective gloves and eye, hearing and head protection devices.
Q DO NOT STAND ON ANY UNSTABLE SURFACE while
using your chainsaw. This includes ladders, scaff olding, trees etc.
Q USE CAUTION WHEN HANDLING FUEL. Move the
chainsaw at least 9 m (25 ft) from the refuelling point before starting the engine.
Q DO NOT ALLOW OTHER PERSONS to be near the
chainsaw when starting or cutting with the chainsaw . Keep b ystanders and animals out of the work area.
Q DO NOT START CUTTING until you ha ve a clear work
area, secure footing and a planned retreat path from the falling tree.
UK - Page 3
GENERAL SAFETY RULES
Q KEEP ALL PARTS OF YOUR BODY away from the sa w
chain when the engine is running.
Q 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 wa y from your body . When transporting the chainsaw , use the appropriate guide bar scabbard.
Q 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.
Q TURN OFF THE ENGINE before putting the chainsaw
down. DO NOT lea ve the engine running unattended. As an additional safety precaution, apply the chain brake before putting down the sa w .
Q 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.
Q 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.
Q KEEP THE HANDLES dry, clean and free of oil or
fuel mixture.
Q OPERATE THE CHAINSAW ONLY in well v entilated
areas.
Q DO NOT OPERATE A CHAINSAW IN A TREE unless
you hav e been specifically trained to do so.
Q ALL CHAINSAW SERVICE, other than the items listed
in the instruction manual, and all maintenance should be performed by competent chainsaw service personnel. For e xample, if improper tools are used to remov e 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.)
Q KEEP ALL PARTS OF YOUR BODY awa y from the sa w
chain when the engine is running.
Q KEEP SAFE-T-TIP ANTI-KICK-BACK NOSE GUARD
properly mounted on the guide bar to prevent rotational kick-back.
Q FOLLOW THE SHARPENING and maintenance
instructions for the saw chain.
Q USE ONLY THE REPLACEMENT GUIDE BARS and
low kick-back chains specified for your saw.
Q DO NOT adapt your power head to a bow guide or use it
to power any attachments or devices not listed for your saw.
Q 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
Q DO NOT CUT VINES and/or small underbrush less than
76 mm (3 in.) in diameter.
Q 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.
QALWAYS HOLD THE CHAINSAW WITH BOTH HANDS
when the engine is running. Use a firm grip with thumbs and fingers encircling the chainsaw handles.
Q 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.
Q BEFORE YOU START THE ENGINE, make sure the
saw chain is not contacting any object.
Q OPERATE THE CHAINSAW only in well ventilated areas.
SAFETY APPAREL
Q 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.
Q Wear non-slip safety footwear and heavy-duty gloves to
improve your grip and to protect your hands.
Q Wear eye, hearing and head protection when operating
this equipment.
REFUELLING DO NOT SMOKE!)
Q T o reduce the risk of fire and b urn injury, handle fuel with
care. It is highly flammable.
Q Mix and store fuel in a container approved for petrol.
Q Mix fuel outdoors where there are no sparks or flames.
Q Select bare ground, stop the engine, and allow it to cool
before refuelling.
Q Loosen the fuel cap slowly to release pressure and to
keep fuel from escaping round the cap.
Q Tighten the fuel cap securely after refuelling.
Q Wipe spilled fuel from the unit. Move 9 m (25 ft.) away
from refuelling site before starting engine.
Q Never attempt to burn off spilled fuel under any
circumstances.
BASIC PRECAUTIONS IN THE CUTTING/ WORK AREA
Q Do not operate a chainsaw in a tree.
Q Do not cut from a ladder: this is extremely dangerous.
Q 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 w ork area depends on the job being performed as well as the size tree or work piece involv ed. For e xample, 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
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.
NOTE: Your chainsaw has been fully factory tested. It is normal to find some slight oil residue on the saw.
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® Nose Guard
No Smoking
Operate with Two Hands
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 which is 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
UK - Page 8
SPECIFICATIONS
Weight - No bar, chain, fuel or oil.............................................................................................................................. 4.4 kg
Fuel tank capacity ................................................................................................................................................. 575 cm
Oil tank capacity..................................................................................................................................................... 350 cm
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 cm
CSP4518 and CSP4520 .............................................................. 45 cm
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
Idle engine speed....................................................................................................................................2,600 - 3,400 min
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
3
3
3
3
-1
-1
Vibration ISO 7505):
Front Handle CSP3816 .................................................................................. 4.3 M/S
Rear Handle CSP3816 ................................................................................ 10.7 M/S
Front Handle CSP4518 and CSP4520 ........................................................... 4.3 M/S
Rear Handle CSP4518 and CSP4520 ......................................................... 10.7 M/S
CSP4518 and CSP4520 ............................................ 112.0 LwA / dBpA
2
2
2
2
UK - Page 9
FRONT HAND GUARD/
CHAIN BRAKE
FEATURES
TRIGGER
RELEASE
SILENCER
CHAIN OIL CAP
CYLINDER
COVER
PRIMER BULB
FRONT
HANDLE
CHOKE LEVER
STARTER GRIP
CHAIN
CATCHER
SAFE-T-TIP
CARBURETTOR
ADJUSTMENT
®
REAR
HANDLE
STARTER/FAN HOUSING
ON/OFF SWITCH
FUEL MIX CAP
UK - Page 10
STOP
THROTTLE
TRIGGER
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.
WEAR EYE
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
PROTECTION
WEAR HEAVY DENIM
OR CHAPS
WEAR STURDY
BOOTS
Fig. 3
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.
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 kic k-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 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 ha v e 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
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-f ast, re v erse reaction which kicks the guide bar up and back tow ards the operator . This reaction may cause loss of control which can result in serious injury.
BRAKE
POSITION
Fig. 5
KICK-BACK DANGER
ZONE
Fig. 6
ROTATIONAL
KICK-BACK
Fig. 7
UK - Page 12
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 (25 ft.) from refuelling site before starting the engine. DO NOT SMOKE! Failure to heed this warning may result in possible personal injury.
FUEL AND REFUELLING
HANDLING THE FUEL SAFELY
WARNING:
Check for fuel leaks. If any are found, correct them before using the saw to prevent fire or burn injury.
Q Always handle fuel with care, it is highly flammable.
Q Always refuel outdoors and do not inhale fuel vapour.
Q Do not let petrol or oil come in contact with skin.
Q 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.
Q Clean up spilled fuel immediately.
Q Mix 2% oil into the petrol. This is a 50:1 ratio.
Q Mix the fuel thoroughly and each time before refuelling.
Q 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.
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.
MIXING THE FUEL
Q 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.
Q 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.
Q 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.
Q Use a high quality 2-cycle self-mixing oil for air-cooled
engines. Do not use motor vehicle oil or 2-cycle out­board oil.
1 Litre + 20 ml = 2 Litres + 40 ml = 3 Litres + 60 ml = 4 Litres + 80 ml = 5 Litres + 100 ml =
50:1
}
UK - Page 13
OPERATION
STOP
Fig. 8
ADDING OIL
Use HOMELITE Bar and Chain Oil. It is designed for chains and chain oilers, and is formulated to perform over a wide temperature range with no dilution required. Chainsaw should use approximately one tank of oil per tank of fuel.
NOTE: Do not use dirty, used or otherwise contaminated oils. Damage may occur to the oil pump, bar or chain.
1. Carefully pour the bar and chain oil into the tank. See
Figure 9.
2. Fill the oil tank every time you refuel the engine.
STARTING THE ENGINE
WARNING:
Keep your body to the left of the chain line. Never straddle the saw or chain, or lean over past the chain line.
1. Place the chainsaw on level ground and ensure that no objects or obstructions which could come in contact with the bar and chain are in the immediate vicinity .
2. Hold the front handle firmly with the left hand and put your right foot onto the base of the rear handle. See
Figure 10.
BRAKE POSITION
Fig. 9
Fig. 11
IGNITION SWITCH
IN THE RUN
POSITION
Fig. 12
PRIMER BULB
Fig. 10
UK - Page 14
Fig. 13
OPERATION
STARTING A COLD ENGINE:
3. Move the chain brake to the BRAKE position. NOTE: Set the chain brake by pushing the chain brake
lever/hand guard forward (towards the bar) to the brake position. Refer to “Operation – Operating Chain Brake” for additional information.
4. Set the ignition switch to the RUN (I) position.
5. Fully press and release the PRIMER BULB 7 times.
6. Pull CHOKE lever all the way OUT to full position. The
partial throttle position is automatically set when the choke lever is set at full choke.
CHOKE
LEVER
Fig. 16
STARTER
GRIP
CHOKE LEVER
STARTER
GRIP
Fig. 14
Fig. 15
Fig. 17
TRIGGER
RELEASE
RUN POSITION
STOP
THROTTLE TRIGGER
Fig. 18
UK - Page 15
OPERATION
7. Pull STARTER until engine attempts to start.
Slowly pull the starter grip out for a short distance until you feel the starter engage, then briskly pull straight up. Do not pull to the end of the rope; this may damage the starter. Hold onto the grip during rewinding—see figure 16.
Pull the starter rope until the first firing of the engine is heard (no more than five pulls).
NOTE: A new unit may require additional pulls.
8. Push CHOKE lever all the way IN.
9. Pull ST AR TER until engine runs.
NOTE: Allow the saw to run in this position
15-30 seconds, depending on the temperature.
10. Immediately SQUEEZE and release the throttle trigger .
Immediately depress the throttle trigger, which releases the trigger lock button. Squeeze and release the throttle trigger to let the engine idle.
12. Move chain brake to RUN position.
Place chain brake lever/hand guard into the R UN position, as shown in figure 18. Refer to “Operation – Operating Chain Brake” for additional information.
CAUTION:
Failure to release partial throttle when chain brake lever is in the brake position will result in serious damage to the unit. Never squeeze and hold the throttle trigger while the chain brake is in the brake position.
Now you are ready to pick up the saw. Use the proper grip for both handles—refer to “Operation” for additional information.
STARTING A WARM ENGINE:
Follow the instructions for starting a cold engine (steps 1-9), but do not attempt to start in the full choke position (skip step 5). Push and release primer bulb 7 times. Pull the choke out and push back it in to the original run position.
STOPPING THE ENGINE
Release the throttle trigger and let the engine return to idle. To stop the engine, move the ignition switch to the “O” stop position. Do not put the chainsaw on the ground when the chain is still moving. For additional safety, set the chain brake when the saw is not in use.
In the event that the ignition switch will not stop the saw, pull the choke lever out to the fully extended position (Full Choke /
If the ignition switch will not stop the saw when set to the “O” stop position, have the ignition switch repaired before using the chainsaw again to prevent unsafe conditions or serious injury.
Important: When you have finished using the saw, relieve tank pressures by loosening the CHAIN OIL and FUEL MIX caps. Then retighten the caps. Allow the engine to cool before storing.
IGNITION SWITCH
IN THE STOP
) and engage chain brake to stop the engine.
POSITION
UK - Page 16
Fig. 19
OPERATION
PREPARING FOR CUTTING
PROPER GRIP ON HANDLES
Refer to “Specific Safety Rules – Safety Apparel” earlier in this manual for appropriate safety equipment.
Q Wear non-slip gloves for maximum grip and protection.
Q Hold the saw firmly with both hands. Always keep your
LEFT HAND on the front handle and your RIGHT HAND on the rear handle, so that your body is to the left of the chain line. See Figure 20
WARNING:
Never use a left-handed (cross-handed) grip or any stance which would place your body or arm across the chain line.
Q Maintain a proper grip on the saw whenever the engine is
running. The fingers should encircle the handle and the thumb be wrapped under the handlebar . This grip is least likely to be broken by a kick-back or other sudden reaction of the saw . An y grip in which the thumb and fingers are on the same side of the handle is dangerous because a slight kick of the saw can cause loss of control.
CHAIN LINE
WARNING:
DO NOT operate the throttle trigger with your left hand and hold the front handle with your right hand. Never allow any part of your body to be in the chain line while operating a saw.
PROPER CUTTING STANCE
Q Balance your weight with both feet on solid ground.
Q Keep left arm with elbow locked in a “straight arm”
position to withstand any kick-back force.
Q Keep your body to the left of the chain line .
Q Keep your thumb on underside of handlebar .
THUMB ON
UNDERSIDE OF
HANDLE BAR
CHAIN LINE
STRAIGHT
ARM
PROPER GRIP
Fig. 20
Fig. 22
Fig. 21
UK - Page 17
OPERATION
BASIC OPERATING/CUTTING PROCEDURES
Practise cutting a few small logs using the following technique, to get the “feel” of using your saw before you begin a major sawing operation.
1. T ake the proper stance in front of the wood with the sa w
idling.
2. Accelerate the engine to full throttle just before entering
the cut by squeezing the throttle trigger.
3. Begin cutting with the saw against the log.
4. Keep the engine at full throttle the entire time you are
cutting.
5. Allow the chain to cut for you; e xert only light downward
pressure. Forcing the cut could result in damage to the bar, chain or engine.
6. Release the throttle trigger as soon as the cut is
completed allowing the engine to idle. Running the saw at full throttle without a cutting load can result in unnecessary wear to the chain, bar and engine.
7. Do not put pressure on the saw at the end of the cut.
WORK AREA PRECAUTIONS
Q Cut only wood or materials made from wood; no sheet
metal, no plastics, no masonry , no non-wood building materials.
Q Never allo w children to operate your sa w . Allo w no
person to use this chainsaw who has not read this operator’s manual or received adequate instructions for the safe and proper use of this chainsa w.
Q Keep ev eryone – helpers, bystanders, children and
animals—a SAFE DISTANCE from the cutting area. During felling operations, the safe distance should be a least twice the height of the largest trees in the felling area. During bucking operations, keep a minimum distance of 4.5 m (15 ft) between workers.
ADJUSTING THE CARBURETTOR
Before adjusting the carburettor, clean the air filter and the starter cover vents. Allow the engine to warm up before carburettor adjustment. Refer to “Maintenance” later in this manual.
AIR FILTER
Fig. 24
STOP
STARTER COVER
VENTS
The carburettor is factory set and should not require adjust­ing. The carburettor will permit only limited adjustment of the “L” Low Jet) and “H” High Jet) needles. Any adjustment should be done by a Homelite service dealer.
Under no circumstances should the “L” Low Jet) and “H” High Jet) needles be forced outside the range of adjustment.
Fig. 25
Fig. 23
Q Always cut with both feet on solid ground to prevent
being pulled off balance.
Q Do not cut above chest height, as a saw held higher is
difficult to control against kick-back forces.
Q Do not fell trees near electrical wires or buildings.
Leave this operation for professionals.
Q Cut only when visibility and light are adequate to
see clearly.
UK - Page 18
CAUTION:
Serious damage may occur to the engine if improper adjustments are made to the “L” and “H” needles.
Do not force the “L” and “H” needles outside the adjustment range!
OPERATION
ADJUSTING IDLING SPEED
Q If the engine starts, runs, and accelerates but will not
idle, turn the idling speed screw “ T ” clockwise to increase idling speed.
Q If the chain turns at idle, turn the idling speed screw “ T ”
anticlockwise to reduce the idling RPM and stop the chain movement. If the saw chain still moves at idling speed, contact a Homelite service dealer for adjustment and discontinue use until the repair is made.
WARNING:
THE SAW CHAIN SHOULD NEVER TURN AT IDLE. Turn the idling speed screw “T” anticlockwise to reduce the idling RPM and stop the chain, or contact a Homelite service dealer for adjustment and discontinue use until the repair is made.
Serious personal injury may result from the saw chain turning at idle.
OPERATING THE CHAIN BRAKE
Refer to “Safety” earlier in this manual for additional information.
Check the operating condition of the chain brake before each use.
1. Start the engine and grasp the front and rear handles securely with both hands.
2. Pull the throttle trigger to bring the chainsaw up to full speed. Using the back of your left hand, engage the chain brake by pushing the chain brake lever/hand guard towards the bar while the chain is rotating rapidly. See
Figure 27.
NOTE: The chain brake should engage and stop the chain immediately. If not, stop the saw by pressing the “ | / O ” on ignition s witch. Take the saw to a Homelite service dealer for repair and discontinue use until the repair is made.
3. Reset the chain brake back into the RUN position by grasping the right-hand side (from operator’s position) of the chain brake lever/hand guard and pull towards the front handle until you hear a click. See Figure 28.
STOP
Fig. 26
WARNING:
Weather conditions and altitude may affect carburation.
Do not allow bystanders close to the chainsaw while adjusting the carburettor.
BRAKE POSITION
Fig. 27
RUN POSITION
Fig. 28
WARNING:
If the chain brake does not stop the chain immediately, take the saw to a Homelite service dealer for repair before use.
UK - Page 19
FELLING TREES HAZARDOUS CONDITIONS
See Figure 29.
WARNING:
OPERATION
STAY AWAY FROM
ELECTRICAL LINES
AND BUILDINGS
Do not fell trees during periods of high wind or heavy precipitation. Wait until the hazardous weather has ended.
When felling a tree, it is important that you heed the following warnings to prev ent possible serious injury .
Q Wear eye, hearing and head protection when operating
this equipment.
Q Do not cut down trees having an extreme lean or large
trees with rotten or dead limbs, loose bark or hollow trunks. Have these trees pushed or dragged down with heavy equipment and then cut them up.
Q Consider the distribution and weight of heavy limbs.
Q Clear out the underbrush round the tree to be felled.
Q Do not cut trees near electrical wires or buildings.
Q Consider the direction in which the tree leans.
Q Check the tree for damaged or dead branches which
could fall and hit you during felling.
Q Periodically glance at the top of the tree during the
back-cut to assure the tree is going to fall in the desired direction.
Q Keep all bystanders at a safe distance (at least twice
the height of the tree).
Q Prepare a path of safe retreat.
Q If the tree starts to fall in the wrong direction, or if the
saw gets caught or hung up during the fall, leave the saw and save yourself!
Q Consider the wind direction before felling a tree.
Q Do not fell trees near power lines or near buildings which
could be struck by falling limbs or the tree itself.
Q The chainsaw operator should keep on the uphill side of
the terrain, as the tree is likely to roll or slide downhill after it is felled.
Q Remove dirt, stones, loose bark, nails, staples and wire
from the tree where felling cuts are to be made.
WEIGHT OF HEAVY LIMBS
DEAD LIMBS
UNDERBRUSH
WEAR EYE, HEAD AND
HEARING PROTECTION
AS WELL AS OTHER
SAFETY APPAREL
C
CLEAR
KEEP
BYSTANDERS
AWAY
CONSIDER THE
DIRECTION IN
WHICH THE TREE
LEANS
RETREAT
PATH
Fig. 29
WARNING:
Do NOT fell trees near power lines or near buildings which could be struck by falling limbs or the tree itself.
UK - Page 20
OPERATION
PROPER PROCEDURE FOR TREE FELLING
See Figure 30.
1. Pick your escape route (or routes in case the intended route is blocked). Clear the immediate area round the tree and make sure there are no obstructions in your planned path of retreat. Clear the path of safe retreat approximately 135° from the planned line of fall.
2. Consider the force and direction of the wind, the lean and balance of the tree and the location of large limbs. These things influence the direction in which the tree will fall. Do not try to fell a tree along a line different from its natural line of fall.
PLANNED LINE OF FALL
PLANNED PATH OF SAFE RETREAT 135° FROM PLANNED LINE OF FALL
PLANNED
LINE OF FALL
135°
90°
RETREAT
SAFE
RETREAT
ZONE
45°
135°
90°
45°
SAFE
RETREAT
ZONE
RETREAT
Fig. 30
UK - Page 21
OPERATION
3. Cut a notch about one-third the diameter of the trunk in
the side of the tree. Make the notch cuts so they intersect at right angles to the line of fall. This notch should be cleaned out to leave a straight line. To keep the weight of the wood off the saw, always make the lower cut of the notch before the upper cut. See
Figure 31.
4. Make the back-cut level and horizontal, and at a minimum of 5 cm (2 in) above the horizontal cut of the notch.
See Figure 31.
NOTE: Never cut through to the notch. Always leave a band of wood between the notch and back cut approxi­mately 5 cm (2 in) or one-tenth the diameter of the tree). This is called the “hinge” or “hinge wood”. It controls the fall of the tree and prevents slipping, twisting or shoot­back of the tree off the stump. See Figure 32.
On large diameter trees, stop the back cut before it is deep enough for the tree to either fall or settle back on the stump. Then insert soft wooden or plastic wedges into the cut so they do not touch the chain. Drive wedges in, little by little, to help jack the tree over. See
Figure 33.
When bucking or felling with a wedge, it may be neces­sary to remove the SAFE-T-TIP anti-kick-back device to allow the bar to be drawn through the cut. After you complete the cut, reinstall the tip immediately.
5. As tree starts to fall, stop the chainsaw and put it down immediately. Retreat along the cleared path, but watch the action in case something falls your way.
BACK CUT
5 cm (2 in.)
BACK CUT
HINGE
5 cm (2 in.) OR 1/10 DIA
NOTCH -
APPROX. 1/3
DIAMETER OF
TRUNK
Fig. 31
HINGE
NOTCH
Fig. 32
WARNING:
Never cut through to the notch when making a back cut. The hinge controls the fall of the tree: this is the section of wood between the notch and back cut.
WEDGE
Fig. 33
UK - Page 22
OPERATION
REMOVING BUTTRESS ROOTS
A buttress root is a large root extending from the trunk of the tree above the ground. Remove large buttress roots before felling. Make the horizontal cut into the buttress first, followed by the vertical cut. Remove the resulting loose section from the work area. Follow the correct tree felling procedure after you have removed the large buttress roots. Refer to “Operation – Proper Procedure for Felling T rees” earlier in this manual.
VERTICAL CUT
BUCKING
Bucking is the term used for cutting a fallen tree to the desired log length.
Q Cut only one log at a time.
Q Support small logs on a saw horse or another log
while bucking.
Q Keep a clear cutting area. Make sure no objects can
contact the guide bar nose and chain during cutting; this can cause kick-back. To avoid the danger, keep the SAFE-T-TIP® anti-kick-back device attached while cutting. Refer to “Safety – Kick-back” earlier in this manual.
Q During bucking operations, stand on the uphill side so
that the cut-off section of the log cannot roll over you.
Q Sometimes it is impossible to avoid pinching with just
standard cutting techniques, or difficult to predict which way a log will settle when cut.
BUCKING WITH A WEDGE
If the wood diameter is large enough for you to insert a soft bucking wedge without touching the chain, use the wedge to hold the cut open to prevent pinching.
NOTE: When bucking or felling with a wedge , you may need to remove the SAFE-T-TIP® anti-kick-back device to allow the bar to be drawn through the cut. After you complete the job, reinstall the tip.
LOOSE SECTION
HORIZONTAL
CUT
Fig. 34
KICK-BACK
Fig. 35
UK - Page 23
WEDGE
Fig. 36
OPERATION
BUCKING LOGS UNDER STRESS
Make the first bucking cut one-third of the way through the log and finish with a two-thirds cut on the opposite side. As you cut the log, it will tend to bend. The saw may become pinched or hung in the log if you make the first cut deeper than a third of the diameter of the log.
Give special attention to logs under stress to prevent the bar and chain from pinching.
OVER-BUCKING
See Figure 38.
Begin on the top side of the log with the bottom of the saw against the log; exert light pressure downward. Note that the saw will tend to pull away from you.
UNDER-BUCKING
See Figure 38.
Begin on the under side of the log with the top of the saw against the log; exert light pressure upwards . During under­bucking, the saw will tend to push back at you. Be prepared for this reaction and hold the saw firmly to maintain control.
LOG SUPPORTED AT ONE END
FINISHING CUT
1ST CUT 1/3 DIA
LOG SUPPORTED AT BOTH ENDS
1ST CUT 1/3 DIA
LOAD
LOAD
FINISHING CUT
OVER-BUCKING
UNDER-BUCKING
Fig. 37
UK - Page 24
Fig. 38
OPERATION
LIMBING AND PRUNING
Q Work slowly, keeping both hands on the saw with a firm
grip. Maintain secure footing and balance.
Q Keep the tree between you and the chain while limbing.
Cut from the side of the tree opposite the branch you are cutting.
Q Do not cut from a ladder; this is extremely dangerous.
Leave this operation for professionals.
Q Do not cut above chest height, as a saw held higher is
difficult to control against kick-back.
LOAD
FIRST CUT
1/3 DIAMETER
SECOND CUT
WARNING:
Never climb into a tree to limb or prune. Do not stand on ladders, platforms, a log or in any position which mau cause you to lose your balance or control of the saw.
Q When pruning trees it is important not to make the flush
cut next to the main limb or trunk until you have cut off the limb further out to reduce the weight. This prevents stripping the bark from the main member. See Figure 39.
1. Under-buck the branch one-third through for your
first cut.
2. Over-buck the branch to drop it.
3. Finish by cutting smoothly and neatly against the
main member so the bark will grow back to seal the wound.
WARNING:
If the limbs to be pruned are above chest height, hire a professional to perform the pruning.
CUTTING SPRING POLES
See Figure 40.
A spring pole is any log, branch, rooted stump or sapling which is bent under tension by other wood so that it springs back if the wood holding it is cut or removed. On a fallen tree, a rooted stump has a high potential of springing back to the upright position during the bucking cut to separate the log from the stump. W atch out f or spring poles—they are dangerous.
FINISHING CUT
Fig. 39
SPRING POLE
Fig. 40
WARNING:
Spring poles are dangerous and could strike the operator, causing loss of control of the chainsaw. This could result in severe or fatal injury to the operator.
UK - Page 25
MAINTENANCE
ASSEMBLING THE BAR AND CHAIN
See Figures 41 through 47.
DANGER:
Never start the engine before installing the guide bar, chain, drive case cover and clutch drum. Without all these parts in place, the clutch may fly off or explode, exposing the user to possible serious injury.
WARNING:
To avoid serious personal injury, read and understand all the safety instructions in this section.
1. Always place the switch in the stop “ O ” position before you work on the saw.
2. Make sure the chain brake is not set, by pulling the chain brake lever/hand guard towards the front handle to the RUN position.
3. Wear gloves when handling the chain and bar. These components are sharp and may contain burrs.
4. Remove the bar mounting nuts using a combination
wrench or 5/8 in. spanner .
5. Remove the clutch cover and the outer guide bar plate.
RUN POSITION
COMBINATION
WRENCH
BAR MOUNTING NUTS
Fig. 42
CLUTCH
COVER
GUIDE BAR
PLATE
Fig. 41
BAR MOUNTING NUTS
Fig. 43
UK - Page 26
MAINTENANCE
6. Lay out the saw chain in a loop and straighten any
kinks. The cutters should face in the direction of chain rotation. If they f ace bac kwards, turn the loop ov er . See Figure 45.
7. Place the chain drive links into the bar groove as shown in figure 46.
8. Position the chain so there is a loop at the back of the bar.
9. Hold the chain in position on the bar and place the loop round the sprocket.
10. Fit the bar flush against the mounting surface so that the bar studs are in the long slot of the bar.
NOTE: When placing the bar on the bar studs, ensure that the adjusting pin is in the chain tension pin hole.
BAR
GROOVE
CHAIN DRIVE LINKS
Fig. 46
CUTTERS
CHAIN DRIVE LINKS
CHAIN ROTATION
Fig. 44
Fig. 45
BAR STUDS
ADJUSTING
PIN
GUIDE BAR
PLATE
UK - Page 27
SPROCKET
CLUTCH
COVER
Fig. 47
MAINTENANCE
11. Replace the outer guide bar plate, ensuring that the bar
pin groove is at the bottom with the upper and lower edges angled away from the guide bar.
12. Replace the clutch cover and bar mounting nuts.
13. Tighten the bar mounting nuts finger tight only. The bar
must be free to move for tension adjustment.
14. Remove all slack from the chain by turning the chain
tensioning screw clockwise until the chain seats snugly against the bar with the drive links in the bar groove.
15. Lift the tip of the guide bar up to check for sagging.
16. Release the tip of the guide bar and turn the chain
tensioning screw half a turn clockwise. Repeat this process until sagging does not exist.
Fig. 49
CHAIN
TENSIONING
SCREW
Fig. 48
17. Hold the tip of the guide bar up and tighten the bar
mounting nuts securely.
The chain is correctly tensioned when there is no sagging on the underside of the guide bar and the chain is snug, but can be turned by hand without binding. Ensure that the chain brake is not set. See Figure 51.
NOTE: If chain is too tight, it will not rotate. Loosen the bar nuts slightly and turn the tension adjuster a quarter turn anticlockwise. Lift the tip of the guide bar up and retighten the bar nuts securely. Ensure that the chain will rotate without binding.
Fig. 50
Fig. 51
UK - Page 28
MAINTENANCE
ADJUSTING THE CHAIN TENSION
WARNING:
Never touch or adjust the chain while the motor is running. The saw chain is very sharp. Always wear protective gloves when performing maintenance on the chain.
1. Stop the engine before setting the chain tension.
2. Make sure the guide bar nuts are loosened to finger
tight and turn the chain tensioner clockwise to tension the chain.
NOTE: A cold chain is correctly tensioned when there is no slack on the underside of the guide bar, the chain is snug and can be turned by hand without binding.
3. Re-tension the chain whenever the flats on the drive
links hang out of the bar groove. NOTE: During normal saw operation, the temperature
of the chain increases. The drive links of a correctly tensioned warm chain will hang approximately 1.25 mm (1/8 in) out of the bar groove. To help determine the correct warm chain tension, the tip of the combination wrench can be used as a guide. See Figures 52, 53 and 54.
NOTE: New chain tends to stretch: check the chain tension frequently and tension as required.
CAUTION:
A chain tensioned while warm may be too tight when cool. Check the “cold tension” before next use.
FLATS ON DRIVE LINKS
APPROXIMATELY 1.25 mm
APPROXIMATELY 1.25 mm
Fig. 53
Fig. 54
CHAIN MAINTENANCE
CAUTION:
Check that the switch is in the STOP “ | / O ” position before working on the saw .
Use only a low-kick-back chain on this saw. This fast-cutting chain provides kick-back reduction when properly main­tained.
For smooth and fast cutting, maintain the chain properly. The chain requires sharpening when the wood chips are
small and powdery , the chain must be forced through the wood during cutting, or the chain cuts to one side. During maintenance of the chain, consider the following:
Q Improper filing angle of the side plate increases the risk
of a severe kick-back.
Fig. 52
UK - Page 29
MAINTENANCE
Q Raker depth gauge) clearance. See Figure 55.
1. Too low increases the potential for kick-back.
2. Not low enough decreases cutting ability.
Q If the cutter teeth hit hard objects such as nails and
stones, or are abraded by mud or sand on the wood, let the Homelite service dealer sharpen the chain.
NOTE: Inspect the drive sprocket for wear or damage when replacing the chain. If signs of wear or damage are present in the areas indicated, have the drive sprocket replaced by a Homelite service dealer. See Figure 56.
RAKER
CLEARANCE
Fig. 55
INSPECT DRIVE
SPROCKET
SHARPENING THE CUTTERS
Be careful to file all cutters to the specified angles and to the same length, as fast cutting can only be obtained when all cutters are uniform.
1. Wear gloves for protection.
2. Tension the chain before sharpening. NOTE: Refer to “Maintenance – Adjusting the Chain
Tension” earlier in this manual.
3. Use a 5/32 in. diameter round file and holder. Do all filing at the midpoint of the bar.
4. Keep the file level with the top plate of the tooth. Do not let the file dip or rock. See Figure 58.
5. Using light but firm pressure. Stroke towards the front corner of the tooth.
6. Lift the file away from the steel on each return stroke.
7. Put a few firm strokes on every tooth. File all left-hand
cutters in one direction. Then move to the other side and file the right-hand cutters in the opposite direction.
8. Remove filings from the file with a wire brush.
CUTTING
CORNER
TOP PLATE
SIDE PLATE
Fig. 56
RIVET HOLE
HEEL
DEPTH GAUGE
TOE
GULLET
Fig. 57
RAKER
(DEPTH GAUGE)
CLEARANCE
Fig. 58
UK - Page 30
CHECK FOR WEAR OR DAMAGE
MAINTENANCE
LEFT-HAND
CUTTERS
RIGHT-HAND
CUTTERS
Fig. 62
Fig. 59
CAUTION:
A dull or improperly sharpened chain can cause excessive engine speed during cutting, which may result in severe engine damage.
Fig. 60
Fig. 61
WARNING:
Improper chain sharpening increases the potential of kick-back.
WARNING:
Failure to replace or repair a damaged chain may cause serious injury.
WARNING:
The saw chain is very sharp. Always wear protective gloves when performing maintenance to the chain.
UK - Page 31
MAINTENANCE
TOP PLATE FILING ANGLE
Q CORRECT 30° – file holders are marked with guide
marks to align file properly to produce correct top plate angle.
Q LESS THAN 30° – for cross cutting. Q MORE THAN 30° – feathered edge dulls quickly.
SIDE PLATE ANGLE
Q CORRECT 80o – Produced automatically if you use the
correct diameter file in the file holder.
Q HOOK – “Grabs” and dulls quickly, increases the
potential of KICK-BACK. Results from using a file with a diameter too small or a
file held too low.
Q BACKWARD SLOPE – Needs too much feed pressure,
causes excessive wear to the bar and chain. Results from using a file with a diameter too large or file
held too high.
MAINTAINING DEPTH GAUGE CLEARANCE
Q Maintain the depth gauge at a clearance of 0.6 mm
(0.025 in). Use a depth gauge tool for checking the depth gauge clearances.
Q Every time the chain is filed, check the depth
gauge clearance.
SIDE PLATE FILING ANGLE
80°
CORRECT
BACKWARD SLOPE
HOOK
INCORRECT
Fig. 64
DEPTH GAUGE
0.6 mm
Fig. 65
TOP PLATE FILING ANGLE
30°
CORRECT
LESS THAN
30°
INCORRECT
Q Use a flat file and a depth gauge jointer to lower all
gauges uniformly. Use a 0.6 mm (0.025 in.) depth gauge jointer. After lowering each depth gauge, restore original shape by rounding the front. Be careful not to damage adjoining drive links with the edge of the file.
See Figures 65 and 66.
Q Depth gauges must be adjusted with the flat file in the
same direction the adjoining cutter was filed with the round file. Use care not to contact cutter face with flat file when adjusting depth gauges.
MORE
THAN 30°
DEPTH GAUGE JOINTER
Fig. 63
FLAT FILE
Fig. 66
UK - Page 32
MAINTENANCE
MAINTAINING THE SAFE-T-TIP® NOSE GUARD
RESTORE ORIGINAL
SHAPE BY ROUNDING
THE FRONT
Fig. 67
MAINTAINING THE GUIDE BAR
CAUTION:
Make sure the chain has stopped before you do any work on the saw.
Every week of use, reverse the guide bar on the saw to distribute the wear for maximum bar life. See Figure 68. The bar should be cleaned every day of use and checked for wear and damage.
Feathering or burring of the bar rails is a normal process of bar wear. Such faults should be smoothed with a file as soon as they occur.
A bar with any of the following faults should be replaced: Q Wear inside the bar rails that permits the chain to lie
over sideways
Q Bent guide bar Q Cracked or broken rails Q Spread rails
In addition, lubricate guide bars with a sprocket at their tip weekly . Using a grease syringe, lubricate weekly in the lubricating hole. See Figure 68.
T urn the guide bar and check that the lubrication holes and chain groove are free from impurities.
CAUTION:
Make sure the chain has stopped before you do any work on the saw.
WARNING:
Although the guide bar comes with a SAFE-T-TIP® anti­kick-back device already installed, be sure to check the tightness of the mounting screw before each use.
Tighten the mounting screw of the nose guard as instructed below . These are specially hardened screws . If y ou cannot install the screw tightly, replace both the screw and the SAFE-T-TIP® before further operation. Do not replace the screw with an ordinary screw .
In addition to preventing chain contact with solid objects at the nose of the bar, the SAFE-T-TIP® also helps keep the chain away from abrasive surfaces, such as the ground. Keep it on the right-hand side of the bar where it will be between the chain and the ground during flush with ground cutting.
The mounting screw requires a 5/16 in. spanner or adjustable spanner to achieve the recommended tightness of 4-5 Nm (35 to 45 in. lb.). A tightness within this range can be achieved by using the following method. See Figure 69.
1. Tighten the screw with your finger.
2. Tighten the screw an additional three-quarters of a turn
using a spanner.
MOUNTING
SCREW
LUBRICATING HOLE
Fig. 68
UK - Page 33
SAFE-T-TIP
Fig. 69
®
STOP
TIGHTEN 3/4
OF A TURN
MAINTENANCE
Q Clean the pre-filter every 25 tanks of fuel or sooner, if
required. Remove the cylinder cover, starter assembly and the fan housing baffle for access to the pre-filter in the engine housing.
NOTE: If you use an air hose for drying, blow through both sides of filter.
CAUTION:
Fig. 70
MOUNTING THE SAFE-T-TIP® NOSE GUARD
See Figure 70.
1. Mount the SAFE-T-TIP® on the bar nose. See Figure 70.
2. Fit the locking rivet or tab in the recessed hole in the
guide bar.
3. Tighten the screw with your finger.
4. From the finger tight position, tighten the screw an
additional three-quarters of a turn using a spanner.
CLEANING THE AIR FILTER
NOTE: Always clean the air filter before making any mixture
adjustments of the carburettor.
1. For access to the air filter and carburettor area, loosen the three screws holding the cylinder cov er.
2. Activate chain brake.
3. Lift the front of the cylinder cover past chain brake
lever.
4. Lift the back of the cylinder cover past the handle.
5. Before removing the air filter from the carburettor , b low
or brush as much loose dirt and sawdust from around the carburettor and chamber as possible.
NOTE: Make sure to pull the choke rod out to keep the carburettor from being contaminated.
6. Remove the screw securing the air filter .
7. Position a flat scre w driver between the tabs and twist
as shown in the illustration.
8. Lift the air filter off the air filter base.
Choose one of the following cleaning options:
9. To lightly clean, tap the filter against a smooth, flat surface to dislodge most saw dust and dirt particles.
10. For a more thorough cleaning, clean in warm soapy water , rinse, and let dry completely .
NOTE: An alternative method is to clean the filter with compressed air (always wear eye protection to avoid eye injury).
11. Reinstall the air filter, making sure that the tabs on the air filter are located in channels on the air filter bottom before tightening filter retainer scre w .
Never run the engine without the air filter; serious damage could result.
Make sure the air filter is correctly placed in the air filter cover before reassembly.
CYLINDER COVER
SCREW
SCREWS
STOP
Fig. 71
AIR FILTER
AIR FILTER RETAINING
SCREW
Fig. 72
FAN
HOUSING
BAFFLE
PRE-FILTER
STARTER ASSEMBLY
Fig. 73
UK - Page 34
MAINTENANCE
CLEANING THE STARTER UNIT
Use a brush or compressed air to keep the cooling vents of the starter assembly free and clean of debris.
STOP
Fig. 74
CLEANING THE ENGINE
Clean the cylinder fins and flywheel fins with compressed air or a brush periodically. Dangerous overheating of the engine may occur due to impurities on the cylinder.
CLEAN FLYWHEEL
FINS
Fig. 76
CHECKING THE FUEL FILTER
Check the fuel filter periodically. Replace it if contaminated or damaged.
STOP
WARNING
Never run the saw without all the parts, including the drive case cover and starter housing, securely in place.
Because parts can fracture and pose a danger of thrown objects, leave repairs of the flywheel and clutch to trained Homelite service dealer personnel.
CLEAN
CYLINDER
FINS
Fig. 75
NOTE: Depending on the type of fuel used, the type and amount of oil used, and/or your operating conditions, the exhaust port and silencer may become bloc ked with carbon deposits. If you notice a power loss with your petrol­powered tool, you may need to remove these deposits to restore performance. W e highly recommended that only qualified service technicians perform this service.
FUEL FILTER
Fig. 77
REPLACING THE SPARKING PLUG
This engine uses a Champion RCJ-4 with 0.63 mm (0.025 in.) electrode gap. Use an exact replacement and replace every six months, or more frequently if necessary.
1. Loosen the sparking plug by turning it anticlockwise with a spanner.
2. Remove the sparking plug.
3. Hand thread the new sparking plug, turning it clockwise. NOTE: Be careful not to cross-thread the sparking plug.
Cross-threading will seriously damage the product.
Fig. 78
UK - Page 35
MAINTENANCE
CLEANING THE SPARK ARRESTING SILENCER
The silencer is equipped with a spark arrester screen. A faulty spark arrester screen may create a fire hazard. Through normal use the screen becomes dirty and should be inspected weekly and cleaned as required. Always keep the silencer and spark arrester on your saw in good condition.
WARNING
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.
CHAIN CATCHER
BRAKE BAND
Fig. 80
1. Allow the silencer to cool.
2. The spark arrester screen is retained by the deflector .
Remove the nuts and screen retainer to access the spark arrester screen.
3. Replace the spark arrester screen if it is cracked or otherwise deteriorated.
SPARK ARRESTER
SCREEN
NUTS
SILENCER
Fig. 79
CHAIN BRAKE
Q Remove the clutch cover and clean the chain brake
components. Check wear on the brake band and replace if worn or deformed. The band thickness should not be less than 0.60 mm (0.025 in.) or worn halfway through.
Q Always keep the chain brake mechanism clean and
lightly lubricate the linkage.
Q Always test the chain brake performance after servicing
or cleaning. Refer to “Operation - Operating Chain Brake” earlier in this manual for additional information.
Q Check and, if damaged, replace the chain catcher.
CLEAN THE CHAIN BRAKE
LUBRICATE THE CHAIN
BRAKE LINKAGE
Fig. 81
STORING THE CHAINSAW (1 MONTH OR LONGER)
1. Drain all fuel from tank into a container approved for
petrol.
2. Run the engine until it stops. This will remov e all fuel-oil mix which could become stale and leave varnish and gum in the fuel system.
3. Drain all bar and chain oil from tank into a container approved for oil.
4. Clean all foreign material from the saw.
5. Store it in a well-ventilated place inaccessible to
children. NOTE: K eep awa y from corrosive agents such as garden
chemicals and de-icing salts.
Abide by all regulations for the safe storage and handling of petrol. Excess fuel should be used up in other 2-cycle engine powered equipment.
UK - Page 36
BAR AND CHAIN COMBINATIONS
Length of Bar Guide Bar Part Number Chain Part Number
305 mm (12 in.) UP08695 UP08692 356 mm (14 in.) UP08696 UP08693 406 mm (16 in.) UP08698 UP08694
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
Engine will not start. Make sure ignition switch is in start position (“I”).
Engine starts but will not accelerate properly.
Engine starts but will not run properly at high speed .
1. No spark.
2. Flooded engine.
Carburettor requires “L” (Low jet) adjustment.
Carburettor requires “H” (High jet) adjustment.
1. Check spark. Remove air filter cover. Remove sparking plug from cylinder. Reattach the sparking plug wire and place sparking plug on top of cylinder with the metal part of plug touching the cylinder. Pull the starter rope and watch for spark at sparking plug tip. If there is no spark, repeat test with a new sparking plug.
2. With the ignition switch off, remove sparking plug. Move choke lever to run position (pushed in com­pletely) and pull starter cord 15 to 20 times. This will clear excess fuel from engine. Clean and reinstall sparking plug. Set ignition switch to run (I) position. Push and fully release primer bulb 7 times. Pull starter three times with choke lever at run. If engine does not start, move choke lever to choke and repeat normal starting procedure. If engine still fails to start, repeat procedure with a new sparking plug.
Contact a Homelite service dealer for carburettor adjustment.
Contact a Homelite service dealer for carburettor adjustment.
Engine does not reach full speed and/or emits excessive smoke.
1. Check oil fuel mixture.
2. Air filter dirty.
3. Spark arrester screen dirty.
4. Carburettor requires “H” (High jet) adjustment.
UK - Page 37
1. Use fresh fuel and the correct 2-cycle oil mix ratio.
2. Clean air filter. Refer to “Maintenance – Cleaning the Air Filter” earlier in this manual.
3. Clean spark arrester screen. Refer to “Maintenance – Cleaning the Spark Arresting Silencer” earlier in this manual.
4. Contact a Homelite service dealer for carburettor adjustment.
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
Engine starts, runs, and accelerates but will not idle.
Bar and chain running hot and smoking.
Engine starts and runs, but chain is not rotating.
Carburettor requires adjustment.
1. Chain oil tank empty.
2. Check chain tension for over­tight condition.
3. Check for oiler function.
1. Chain brake engaged.
2. Chain tension too tight.
3. Check guide bar and chain assembly.
4. Check guide bar and chain for damage.
Turn idling speed screw “T” clockwise to increase idling speed. If chain turns at idle, turn idling speed screw “T” anticlockwise to decrease speed. Wear protective equipment and observe all safety instruc­tions. See Figure 82.
1. Oil tank should be filled every time that fuel tank is filled.
2. Tension chain per instructions in “Maintenance – Adjusting the Chain Tension” earlier in this manual.
3. Run at half throttle 30 to 45 seconds. Stop saw and check for oil dripping from SAFE-T-TIP and guide bar. If oil is present the chain may be dull or bar may be damaged. If no oil is on the SAFE-T-TIP, contact a Homelite service dealer.
1. Release chain brake, refer to “Operation – Operating Chain Brake” earlier in this manual.
2. Tension chain per instructions in “Maintenance – Adjusting the Chain Tension” earlier in this manual.
3. Refer to “Maintenance – Assembling the Bar and Chain” earlier in this manual.
4. Inspect guide bar and chain for damage.
NOTE: The carburettor adjustment needles are equipped with plastic caps which prevent anticlockwise rotation from the original factory adjustment. If your product exhibits specific performance problems where the T roubleshooting Section recommends an anticlockwise needle adjustment and you have made no adjustments since the original purchase, take the product to a factory-authorised service dealer for repair. In most cases, the needed adjustment is a simple task for the factory­trained service representative.
STOP
Fig. 82
UK - Page 38
WARRANTY
GUARANTEE – STATEMENT
RTSA / RTUK / RTG)
All Homelite products are guaranteed from defects in material and workmanship, for a period of twenty-four (24) months, effective and evidenced from date of original invoice or delivery note.
Defects caused by normal wear and tear , unauthorised/improper maintenance/handling or overload are excluded from this guarantee, as are accessories such as battery packs, bulbs, blades and bits etc.
In the event of malfunction within the guarantee period, please return the assembled product with proof of purchase to your dealer or nearest Homelite service Centre.
Your statutory rights in respect of defective products remain unaff ected by the warranty.
Ryobi Technologies GmbH, Itterpark 7, D-40724 Hilden, Germany Ryobi Technologies, Customer Services, Anvil House, Tuns Lane, Henley-on-Thames, RG9 1SA, UK Homelite / R.T.S.A, BP 50012 - 95945 Roissy CDG Cedex – FRANCE Ryobi Technologies Australia PTY Limited, 359-361 Horsley Road, Milperra, NSW 2214 Australia
SAFETY DIRECTIVE
EC DECLARATION OF CONFORMITY
According to machinery directive 98/37/EC and EMC directive 89/336/EEC - We,
Homelite Consumer Products Inc., 1428 Pearman Dairy Road, Anderson, SC 29625, USA
Declare in sole responsibility that the product: CSP3816 UT74123A), CSP4518 UT74125A), and CSP4520 UT74127A) to which this certificate applies, conforms to the basic health and safety requirements of the Machinery Directive 98/37/EC and other relevant directives, such as EMC Directive 89/336/EEC and Outdoor Directive 2000/14/EC.
EC type examination certificates have been issued by the following approved body, following the requirements set out in EMC Directive 89-336/EEC by: SLG Certificate No. 1005240
To effect correct application of the health and safety requirements stated in the EEC directives, the following European and/or national standards and/or technical specifications were consulted:
DIN, EN 608:12/94 / EN292-1:1991 / EN292-2:1991 / ISO 7182:1991 / ISO 3767-5:1992 / ISO 3864:1984 / ISO 6531:1982 / ISO 6533:1993 / ISO 6534:1992 / ISO 6535:1991 / ISO 7293:1983 / ISO 7505:1986/ISO 7914:1986 / ISO 7915:1991 / ISO 8334:1985 / ISO DIS 9207:1991 / ISO 9518:1992 / ISO 10726:1992 / CISPR 12:1990
Wayne Hill Director, Environmental Compliance
Homelite Consumer Products, Inc. 1428 Pearman Dairy Road Anderson, SC 29625, USA
January 24, 2003
UK - Page 39
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
983000-210 2-03
Ryobi Technologies GmbH
Itterpark 7
D-40724 Hilden
Germany
Tel.: +49 0)2103 / 29 58 0
Fax : +49 0)2103 / 29 58 29
info@ryobi-rtg.de
Ryobi Technologies
Customer Services
Anvil House
Tuns Lane
Henley-on-Thames
RG9 1SA
UK
Homelite / R.T.S.A
BP 50012 - 95945 Roissy CDG Cedex – FRANCE
Ryobi Technologies Australia PTY Limited
359-361 Horsley Road, Milperra, NSW 2214 Australia
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