Homelite UT10942D User Manual

OPERATOR'S MANUAL
UT10927D / 16 in. (406 mm) 38cc Chain Saw UT10946D / 18 in. (457 mm) 45cc Chain Saw UT10942D / 20 in. (508 mm) 45cc Chain Saw
Your new chain saw 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 before using
this product.
Thank you for buying a Homelite chain saw.
SAVE THIS MANUAL FOR FUTURE REFERENCE
TABLE OF CONTENTS
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Introduction ..................................................................................................................................................................... 2
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General Safety Rules .................................................................................................................................................. 3-4
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Specific Safety Rules................................................................................................................................................... 4-5
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Symbols ....................................................................................................................................................................... 6-7
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Specifications ................................................................................................................................................................. 7
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Features ......................................................................................................................................................................... 8
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Operation ................................................................................................................................................................... 9-21
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Maintenance ............................................................................................................................................................ 22-32
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Bar and Chain Combinations ........................................................................................................................................ 33
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Troubleshooting ....................................................................................................................................................... 33-34
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Warranty ....................................................................................................................................................................... 35
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Parts Ordering/Service ................................................................................................................................................. 36
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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 chain saw. 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 power tool can result in foreign objects being thrown into your eyes, which can result in severe eye damage. Before beginning tool operation, always wear safety goggles or safety glasses with side shields and a full face shield when needed. We recommend Wide Vision Safety Mask for use over eyeglasses or standard safety glasses with side shields. Always wear eye protection which is marked to comply with ANSI Z87.1.
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
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KNOW YOUR TOOL. Read the operator's manual
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carefully. Learn the saw's applications and limitations as well as the specific potential hazards related to this tool.
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KICKBACK MAY OCCUR WHEN THE NOSE OR TIP
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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 toward 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 upon the safety devices built into your saw. As a chain saw user, you should take several steps to keep your cutting jobs free from accident or injury.
1. With a basic understanding of kickback, 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 your thumbs and fingers encircling the chain saw handles. A firm grip together with a stiff left arm will help you maintain control of the saw if kickback 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 that 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 chest 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.
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DO NOT OPERATE A CHAIN SAW WITH ONE
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HAND. Serious injury to the operator, helpers, bystanders, or any combination of these persons may result from one-handed operation. A chain saw is intended for two-handed use.
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DO NOT OPERATE A CHAIN SAW WHEN YOU ARE
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FATIGUED. Never operate a chain saw when you are tired or under the influence of medication, drugs, or alcohol.
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USE SAFETY FOOTWEAR. Wear snug-fitting clothing,
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protective gloves, and eye, hearing, and head protection devices.
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DO NOT STAND ON ANY UNSTABLE SURFACE
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while using your chain saw, that includes ladders, scaffolds, trees, etc.
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USE CAUTION WHEN HANDLING FUEL. Move the
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chain saw at least 30 feet (9 m) from the fueling point before starting the engine.
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DO NOT ALLOW OTHER PERSONS to be near the
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chain saw when starting or cutting with the chain saw. Keep bystanders and animals out of the work area.
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DO NOT START CUTTING until you have a clear work
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area, secure footing, and a planned retreat path from the falling tree.
KEEP ALL PARTS OF YOUR BODY away from the saw chain when the engine is running.
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ALWAYS CARRY THE CHAIN SAW WITH THE
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ENGINE STOPPED AND THE BRAKE ENGAGED,
the guide bar and saw chain to the rear, and the muffler away from your body. When transporting the chain saw, use the appropriate guide bar scabbard.
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DO NOT OPERATE A CHAIN SAW THAT IS
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DAMAGED, improperly adjusted, or not completely and securely assembled. Be sure that the saw chain stops moving when the throttle control trigger is released.
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SHUT OFF THE ENGINE before setting the chain saw
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down. DO NOT leave the engine running unattended. As an additional safety precaution, apply the chain brake prior to setting down the saw.
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USE EXTREME CAUTION when cutting small-size
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brush and saplings because slender material may catch the saw chain and be whipped toward you or pull you off balance.
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WHEN CUTTING A LIMB that is under tension, be
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alert for springback so that you will not be struck when the tension in the wood fibers is released.
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KEEP THE HANDLES dry, clean, and free of oil or fuel
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mixture.
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OPERATE THE CHAIN SAW ONLY in well-ventilated
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areas.
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DO NOT OPERATE A CHAIN SAW IN A TREE unless
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you have been specifically trained to do so.
GENERAL SAFETY RULES
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ALL CHAIN SAW SERVICE, other than the items
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listed in the instruction manual and all maintenance, should be performed by competent chain saw 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 could occur and subsequently could cause the flywheel to burst.)
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KEEP SAFE-T-TIP ANTI-KICKBACK NOSE GUARD
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properly mounted on the guide bar to prevent rotational kickback.
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
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DO NOT CUT VINES and/or small underbrush (less
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than 3 in./76 mm in diameter).
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MUFFLER SURFACES ARE VERY HOT during and
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after operation of the chain saw; keep all body parts away from the muffler. Serious burns may occur if contact is made with the muffler.
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Always hold the chain saw with both hands when the
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engine is running. Use a firm grip with thumbs and fingers encircling the chain saw handles.
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Never let anyone use your chain saw who has not
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received adequate instructions in its proper use. This applies to rentals as well as privately owned saws.
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Before you start the engine, make sure the saw chain is
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not contacting any object.
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Operate the chain saw only in well ventilated areas.
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SAFETY APPAREL
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Wear snug fitting clothing. Always wear heavy, long
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pants, boots, and gloves. Do not wear jewelry, short pants, 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.
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Wear non-slip safety footwear and heavy-duty gloves to
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improve your grip and to protect your hands.
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FOLLOW THE SHARPENING and maintenance
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instructions for the saw chain.
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USE ONLY THE REPLACEMENT GUIDE BARS and
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low kickback chains specified for your saw.
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DO NOT adapt your powerhead to a bow guide or use it
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to power any attachments or devices not listed for your saw.
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SAVE THESE INSTRUCTIONS. Refer to them fre-
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quently and use to instruct other users. If you loan someone this tool, loan them these instructions also.
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Wear eye protection which is marked to comply with
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ANSI Z87.1, as well as, hearing and head protection when operating this equipment.
REFUELING (DO NOT SMOKE!)
To reduce the risk of fire and burn injury, handle fuel with care. It is highly flammable.
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Mix and store fuel in a container approved for gasoline.
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Mix fuel outdoors where there are no sparks or flames.
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Select bare ground, stop the engine, and allow it to
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cool before refueling.
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Loosen the fuel cap slowly to release pressure and to
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keep fuel from escaping around the cap.
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Tighten the fuel cap securely after refueling.
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Wipe spilled fuel from the unit. Move 30 feet (9 m)
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away from refueling site before starting engine.
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Never attempt to burn off spilled fuel under any circum-
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stances.
CUTTING/WORK AREA
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Do not operate a chain saw in a tree.
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Do not cut from a ladder, this is extremely dangerous.
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Keep bystanders and animals out of the work area. Do
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not allow other persons to be nearby during starting or cutting with the chain saw.
Note: The size of the work area depends on the job being performed as well as the size tree or workpiece involved. For example, felling a tree requires a larger work area than making other cuts (i.e., bucking cuts, etc.).
SPECIFIC SAFETY RULES
PUSH AND PULL
See Figure 1.
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 chain saw that is damaged, improperly adjusted, or is not completely and securely assembled. Be sure that the saw chain stops moving when the throttle control trigger is released. If the saw chain moves at idle speed, the carburetor may need adjusting. Refer to “Operation” later in this manual. If the saw chain still moves at idle speed after adjustment has been made, contact a Homelite Service Center for adjustment and discontinue use until the repair is made.
WARNING:
All chain saw service, other than items in the operator's manual maintenance instructions, should be performed by competent chain saw 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 and serious injury could result.
KICKBACK
Kickback is a dangerous reaction that can lead to serious injury. Do not rely only on the safety devices provided with your saw. As a chain saw 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 kickback and how to avoid serious personal injury.
Note: Your chain saw has been fully factory tested. It is normal to find some slight oil residue on the saw.
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 safer.
SYMBOL NAME EXPLANATION
Safety Alert Symbol
Read Your Operator’s Manual
Eye, Hearing, and Head Protection
SAFE-T-TIP® Nose Guard
No Smoking
Prohibited 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, 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 prevent kickback.
No smoking, sparks, or open flame.
Diagonal line across a symbol means this is prohibited or should be avoided.
®
nose guard on the guide bar helps
Operate with Two Hands
One Handed
Carbon Monoxide
Kickback
Bar Nose Contact
Gloves
Hold and operate the saw properly with both hands.
Do not operate the saw using only one hand.
Engines produce carbon monoxide which is an odorless, deadly poison. Do not operate in an enclosed area.
Danger – beware of kickback.
Avoid bar nose contact.
Wear non-slip gloves.
SYMBOLS
The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and the explanations with them, deserve your careful attention and understanding. The safety warnings do not by themselves eliminate any danger. The instructions or warnings they give are not substitutes for proper accident prevention measures.
Symbol Meaning
DANGER: Indicates an imminently hazardous situation, which, if not avoided, will result in death or
serious injury.
WARNING: Indicates a potentially hazardous situation, which, if not avoided, could result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation, which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices that may cause property damage.
Note: Advises you of additional information concerning the operation or maintenance of the equipment.
SAVE THESE INSTRUCTIONS
SPECIFICATIONS
UT10946D
Weight - No bar, chain, fuel or oil ........... 9.7 lbs. (4.4 kg)
Fuel tank volume .................................... 19.4 oz. (575 ml)
Chain oil tank volume ............................. 11.8 oz. (350 ml)
Bar length ................................................. 18 in. (457 mm)
Chain pitch .............................................. .325 in (8.3 mm)
Chain gauge ......................................... .050 in. (1.25 mm)
UT10942D
Weight - No bar, chain, fuel or oil ........... 9.7 lbs. (4.4 kg)
Fuel tank volume .................................... 19.4 oz. (575 ml)
Chain oil tank volume ............................. 11.8 oz. (350 ml)
Bar length ................................................. 20 in. (508 mm)
Chain pitch .............................................. .325 in (8.3 mm)
Chain gauge ......................................... .050 in. (1.25 mm)
Drive sprocket ........................................................ 7-tooth
Engine displacement ............................. 2.75 cu. in. (45cc)
Maximum engine power ......... 2.5HP/1.9KW (9,000 RPM)
Idle engine speed ................................ 2,600 - 3,400 RPM
Fuel tank capacity .................................. 19.4 oz. (575 ml)
Oil tank capacity..................................... 11.8 oz. (350 ml)
Drive sprocket ........................................................ 7-tooth
Engine displacement ............................. 2.75 cu. in. (45cc)
Maximum engine power ......... 2.5HP/1.9KW (9,000 RPM)
Idle engine speed ................................ 2,600 - 3,400 RPM
Fuel tank capacity .................................. 19.4 oz. (575 ml)
Oil tank capacity..................................... 11.8 oz. (350 ml)
UT10927D
Weight - No bar, chain, fuel or oil ........... 9.7 lbs. (4.4 kg)
Fuel tank volume .................................... 19.4 oz. (575 ml)
Chain oil tank volume ............................. 11.8 oz. (350 ml)
Bar length ............................................... 16. in. (406 mm)
Chain pitch .......................................... ..0.325 in (8.3 mm)
Chain gauge ......................................... .050 in. (1.25 mm)
Drive sprocket ........................................................ 7-tooth
Engine displacement ............................. 2.75 cu. in. (45cc)
Maximum engine power ......... 2.5HP/1.9KW (9,000 RPM)
Idle engine speed ................................ 2,600 - 3,400 RPM
Fuel tank capacity .................................. 19.4 oz. (575 ml)
Oil tank capacity..................................... 11.8 oz. (350 ml)
FEATURES
TRIGGER RELEASE
CYLINDER
COVER
PRIMER BULB
FRONT
HANDLE
FRONT HAND
GUARD/CHAIN
BRAKE
CHOKE LEVER
STARTER
GRIP
BAR MOUNTING
NUTS
CHAIN OIL
CAP
SAFE-T-TIP
®
STARTER/FAN
HOUSING
IGNITION
SWITCH
FUEL MIX
CAP
STOP
THROTTLE
TRIGGER
REAR
HANDLE
Fig. 2
OPERATION
WARNING:
The warnings and instructions in this section of the operator's manual are for your safety and to prevent serious personal injury.
pushed toward the bar, the chain should stop immedi­ately. A chain brake does not prevent kickback. The chain brake should be cleaned and tested before each use. Refer to “Operation- Operating the Chain Brake” later in this manual for additional information.
UNDERSTANDING YOUR CHAIN SAW SAFETY DEVICES
SAFE-T-TIP® ANTI-KICKBACK NOSE GUARD
See Figure 3.
The SAFE-T-TIP® prevents kickback because it covers the tip of the bar where rotational kickback is generated. Inexperienced persons should never attempt to cut when the SAFE-T-TIP® has been removed from the bar tip.
SAFE-T-TIP
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 kickback.
Note: Refer to “Maintenance” later in this manual for instructions on reinstalling the SAFE-T-TIP nose guard.
®
Fig. 3
LOW KICKBACK SAW CHAIN
The rakers (depth gauges) ahead of each cutter can minimize the force of a kickback reaction by preventing the cutters from digging in too deeply at the kickback zone. Only use replacement chain that is equivalent to the original chain or has been certified as a low kickback chain.
As saw chains are sharpened, they lose some of the low kickback qualities and extra caution is required.
GUIDE BARS
Generally, guide bars with small radius tips have some­what lower kickback 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®.
CHAIN BRAKE
See Figures 4 and 5.
Chain brakes are designed to quickly stop the chain from rotating. When the chain brake lever/hand guard is
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-T­TIP® nose guard on your saw's guide bar and use proper cutting techniques.
RUN POSITION
Fig. 4
BRAKE
POSITION
Fig. 5
WARNING:
KICKBACK
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 toward 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 can cause loss of saw control which can result in serious injury.
Do not rely exclusively upon the safety devices built into your saw. As a chain saw user, you should take several steps to keep your cutting jobs free from accident or injury.
occurs when the moving chain contacts
OPERATION
KICKBACK PRECAUTIONS
See Figures 6 and 7.
Rotational kickback occurs when the moving chain con­tacts an object at the Kickback 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 can cause loss of control which can result in serious injury.
KICKBACK DANGER
ZONE
Fig. 6
ROTATIONAL
KICKBACK
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Keep gasoline and oil away from the eyes. If gasoline
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or oil comes in contact with the eyes, wash them immediately with clean water. If irritation is still present, see a doctor immediately.
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Clean up spilled fuel immediately.
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MIXING THE FUEL
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This product is powered by a 2-cycle engine and
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requires pre-mixing gasoline and 2-cycle oil. Pre-mix unleaded gasoline and 2-cycle engine oil in a clean container approved for gasoline.
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This engine is certified to operate on unleaded gasoline
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intended for automotive use with an octane rating of 87 ([R + M] / 2) or higher.
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Do not use any type of pre-mixed gasoline/oil from fuel
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service stations, this includes the pre-mixed gasoline/oil intended for use in mopeds, motorcycles, etc.
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Use a high quality 2-cycle self-mixing oil for air-cooled
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engines. DO NOT use automotive oil or 2-cycle out­board oil.
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Mix 2% oil into the gasoline. This is a 50:1 ratio.
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Mix the fuel thoroughly and each time before fueling.
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Mix in small quantities. Do not mix quantities larger
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than usable in a 30-day period. A 2-cycle oil containing a fuel stabilizer is recommended.
Fig. 7
WARNING:
Always shut off engine before fueling. Never add fuel to a machine with a running or hot engine. Move at least 30 ft. (9 m) from refueling site before starting the engine. DO NOT SMOKE! Failure to heed this warning can result in possible personal injury.
FUEL AND REFUELING
HANDLING THE FUEL SAFELY
See Figure 8.
WARNING:
Check for fuel leaks, if any are found, correct them before using the saw to prevent fire or burn injury.
50:1
GAS
FILLING THE TANK
See Figure 8.
Refer to “Specific Safety Rules – Refueling” earlier in this manual for additional safety information.
1. Clean the surface around fuel cap to prevent contamina­tion.
2. Loosen the fuel cap slowly.
3. Carefully pour the fuel mixture into the tank. Avoid
spillage.
4. Prior to 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.
GAS
OILOIL
OILOIL
50:1
FUEL
FUEL
MIX
MIX
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Always handle fuel with care, it is highly flammable.
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Always refuel outdoors and do not inhale fuel vapors.
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Do not let gasoline or oil come in contact with skin.
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Page 10
1 Quart + .67 oz. = 2 Quart + 1.35 oz. = 3 Quart + 2.0 oz. = 4 Quart + 2.7 oz. = 5 Quart + 3.38 oz. =
50:1
}
OPERATION
STOP
Fig. 8
ADDING OIL
See Figures 9 and 10.
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. Chain saw 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.
2. Fill the oil tank every time you fuel the engine.
OPERATING THE CHAIN BRAKE
See Figures 10, 11 and 12.
Refer to “Safety” earlier in this manual for additional information.
Check the operating condition of the chain brake prior to each use.
1. Using the back of your left hand, engage the chain
brake by pushing the chain brake lever/hand guard toward the bar while the chain is rotating rapidly.
2. Reset the chain brake back into the RUN position by
grasping the top of the chain brake lever/hand guard and pull toward the front handle until you hear a click.
WARNING:
If the chain brake does not stop the chain immediately, take the saw to a Homelite Service Center for repair prior to use.
BRAKE POSITION
Fig. 9
Fig. 10
Fig. 11
RUN POSITION
Fig. 12
Page 11
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