OPERATOR’S MANUAL
MANUEL D’UTILISATION
MANUAL DEL OPERADOR
18 VOLT cHAIN sAW
SCIE À CHAÎNE 18 V MOTOSIERRA DE 18 V
P542
ACCEPTS ALL one+ BATTERY PACKS
COMPATIBLE AVEC TOUS LE BATTERIES ONE+
ACEPTA TODOS LOS PAQUETES DE BATERÍAS ONE+
Your chain saw has been engineered and manufactured to our high standard for dependability, ease of operation, and operator safety. When 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 your purchase.
SAVE THIS MANUAL FOR FUTURE REFERENCE
Cette scie à chaîne a été conçue et fabriquée conformément aux strictes normes de fiabilité, simplicité d’emploi et sécurité d’utilisation.Correctemententretenue,elle vousdonnera desannées de fonctionnement robuste et sans problème.
AVERTISSEMENT : Pour réduire les risques de blessures, l’utilisateur doit lire et veiller à bien comprendre le manuel d’utilisation avant d’employer ce produit.
Merci de votre achat.
Su motosierra inalámbrica ha sido diseñada y fabricada de conformidad con nuestras estrictas normas para brindar fiabilidad, facilidad de uso y seguridad para el operador. Con el debido cuidado, le brindará muchos años de sólido y eficiente funcionamiento.
ADVERTENCIA: Para reducir el riesgo de lesiones, el usuario debe leer y comprender el manual del operador antes de usar este producto.
Le agradecemos su compra.
CONSERVER CE MANUEL POUR |
GUARDE ESTE MANUAL PARA |
FUTURE RÉFÉRENCE |
FUTURAS CONSULTAS |
TABLE OF CONTENTS |
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TABLE DES MATIÈRES / ÍNDICE DE CONTENIDO |
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Introduction........................................................................................................................................ |
2 |
Introduction / Introducción |
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General Safety Rules..................................................................................................................... |
3-5 |
Règles de sécurité générales / Reglas de seguridad generales |
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Specific Safety Rules......................................................................................................................... |
6 |
Règles de sécurité particulières / Reglas de seguridad específicas |
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Symbols......................................................................................................................................... |
7-8 |
Symboles / Símbolos |
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Features............................................................................................................................................. |
9 |
Caractéristiques / Características |
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Assembly......................................................................................................................................... |
10 |
Assemblage / Armado |
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Operation................................................................................................................................... |
10-18 |
Utilisation / Funcionamiento |
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Maintenance.............................................................................................................................. |
19-24 |
Entretien / Mantenimiento |
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Troubleshooting............................................................................................................................... |
25 |
Dépannage / Corrección de problemas |
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Warranty........................................................................................................................................... |
26 |
Garantie / Garantía |
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Parts Ordering and Service................................................................................................ |
Back Page |
Commande de pièces et réparation / Pedidos de piezas y servicio.......................................................... |
Page arrière / Pág. posterior |
introduction |
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Introduction / Introducción |
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This product has many features for making its use more pleasant and enjoyable. Safety, performance, and dependability have been given top priority in the design of this product making it easy to maintain and operate.
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Ce produit offre de nombreuses fonctions destinées à rendre son utilisation plus plaisante et satisfaisante. Lors de la conception de ce produit, l’accent a été mis sur la sécurité, les performances et la fiabilité, afin d’en faire un outil facile à utiliser et à entretenir.
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Este producto ofrece numerosas características para hacer más agradable y placentero su uso. En el diseño de este producto se ha conferido prioridad a la seguridad, el desempeño y la fiabilidad, por lo cual se facilita su manejo y mantenimiento.
2
general SAFETY RULES
WARNING:
Do not attempt to operate this unit until you have read thoroughly and understand completely all instructions, safety information, etc. contained in this manual. Failure to comply can result in accidents involving fire, electric shock, or serious personal injury.
READ ALL INSTRUCTIONS Basic Safety Precautions
nDo not operate a chain saw with one hand! Use a firm grip with thumbs and fingers encircling the chain saw handles. 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.
nAlways be aware of what you are doing when using the chain saw. Use common sense. Do not operate the chain saw when you are tired, ill, or under the influence of alcohol, drugs, or medication.
nStay alert and pay attention to what you are doing. Use common sense when using this unit.
nKeep all parts of your body away from the saw chain when the unit is running.
nAlways carry the chain saw by the front handle with the unit stopped and the guide bar and saw chain positioned to the rear. When transporting your chain saw, use the appropriate guide bar scabbard.
nNever let anyone use your chain saw who has not received adequate instructions in its proper use. This applies to rentals as well as privately owned saws.
nBefore you start the unit, make sure the saw chain is not contacting any object.
nStop the chain saw before setting it down. Do not leave the unit running unattended.
nTo avoid accidental starting, never carry the unit with your finger on the switch trigger.
nMaintain the unit with care. Keep the cutting edge sharp and clean for best performance and to reduce the risk of injury. Follow instructions for lubricating and changing accessories. Inspect the battery charger cord periodically, and if damaged, have it replaced or repaired by an authorized service dealer.
nKeep handles dry, clean, and free of oil and grease.
nDo not operate a chain saw that is damaged, improperly adjusted, or not completely and securely assembled. Chain should stop turning when the switch trigger is released. If the chain turns after the switch trigger has been released, have the unit serviced by your nearest Ryobi service dealer.
nCheck for damaged parts. Any part or guard that has been damaged should be carefully checked to determine that it will operate properly and perform its intended function. Check for alignment of moving parts, binding of moving parts, breakage of parts, mounting, and any other conditions that may affect its operation. A guard or other part that is damaged should be properly repaired or replaced by an authorized service dealer unless otherwise indicated elsewhere in this manual.
nAll chain saw service, other than the items listed in the operation and maintenance sections, should be performed by your nearest Ryobi service dealer.
nDo not use in the rain, snow or wet conditions.
nAlways maintain a proper stance. Do not overreach.
nDo not adapt your powerhead to a bow guide or use it to power any attachments or devices not listed for the saw.
nDo not cut vines and/or small underbrush.
SAFETY APPAREL
nWear snug fitting clothing. Always wear heavy, long pants, long sleeves, overalls, jeans or chaps made of cut resistant material or ones that contain cut resistant inserts. Wear nonslip safety footwear. Wear non-slip heavy duty gloves to improve your grip and to protect your hands. Do not wear jewelry, short pants, sandals, or go barefoot. Do not wear loose fitting clothing, which could be drawn into the motor or catch the chain or underbrush. Secure hair so it is above shoulder level.
nWear eye protection which is marked to comply with ANSI Z87.1 as well as hearing and head protection when operating this equipment.
3 - English
general SAFETY RULES
Kickback
See Figures 1 - 3.
nWARNING: Kickback may occur 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 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 the saw. As a chain saw user, you should take several steps to keep your cutting jobs free from accident or injury.
nThe following precautions should be followed to minimize kickback:
1.Hold the saw firmly with both hands when the motor 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.
2.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.
3.Always cut with the unit running at full speed. Fully squeeze the switch trigger and maintain a steady cutting speed.
4.Use replacement parts such as low kickback chain and special guide bars that reduce the risks associated with rotational kickback.
Use only the replacement guide bars and low kickbackchainsspecifiedbythemanufacturer for the saw.
nWith a basic understanding of kickback, you can reduce or eliminate the element of surprise. Sudden surprise contributes to accidents.
nKeep proper footing and balance at all times.
nDonotcutaboveshoulder heightor overreach when cutting.
nFollow the sharpening and maintenance instructions for the saw chain.
nPush and Pull - This reaction force is always opposite to the direction the chain is moving where wood contact is made. Thus, the operator must be ready to control the PULL when cutting on the bottom edge of the bar, and PUSH when cutting along the top edge. See Figure 3.
ROTATIONAL
KICKBACK
Fig. 1
KICKBACK
DANGER ZONE
Fig. 2
PULL |
PUSH 
Fig. 3
4 - English
general SAFETY RULES
In The Cutting/Work Area
nDo not operate a chain saw in a tree, on a ladder, rooftop or scaffold; this is extremely dangerous.
nKeep ALL children, bystanders, visitors, and animals out of the work area while starting or cutting with the chain saw.
NOTE: The size of the work area depends on the jobbeingperformedaswellasthesizetreeorwork piece involved. For example, felling a tree requires a larger work area than making bucking cuts.
nNever start cutting until you have a clear work area, secure footing, and a planned retreat path from the falling tree. Cluttered area invite injuries.
nDo not expose the chain saw to rain.
nDo not use the chain saw in damp or wet locations.
nDo not use the chain saw near flammable liquids, gases, or in any type of explosive atmosphere.
nUse 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.
nWhen cutting a limb that is under tension, be alert for spring back so that you will not be struck when the tension in the wood fibers is released.
nDo not force the chain saw. The job can be performed better and safer at the rate for which it was intended.
nAlways use the right product for your application. The chain saw should be used for cutting wood only. Never use the chain saw to cut plastic, masonry or non-wood building materials.
nDo not use the chain saw for purposes not intended.
nStore idle chain saw when not in use. Chain saw should be stored in a dry and high or locked area out of the reach of children. When storing chain saw, remove battery and place the scabbard on the bar and chain or store the chain saw in a carry case.
nRemove the battery pack from the chain saw before cleaning, servicing, storing, removing material from the unit, changing accessories such as the bar and chain, or when not in use.
Understanding your chain saw safety devices
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 original chain or has been certified as low kickback chain per ANSI B175.1.
Low kickback saw chain is chain that has met the kickback performance requirements of ANSI B175.1 - 1991 (American National Standard for Power Tools - Gasoline-Powered Chain SawsSafety Requirements) when tested on the representative sample of chain saws below 3.8 c.i.d. specified in ANSI B175.1 - 1991.
As saw chains are sharpened during their useful life, they lose some of the low kickback qualities and extra caution should be used.
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 Ryobi bars listed for the saw in this operator’s manual.
5 - English
SPECIFIC SAFETY RULES
BATTERY SAFETY
nBattery operated units do not have to be plugged into an electrical outlet; therefore, they are always in operating condition. Be aware of possible hazards even when unit is not operating.
nRemove the battery pack from the chain saw before cleaning, servicing, storing, removing material from the unit, changing accessories such as the bar and chain, or when not in use.
nA battery pack must be recharged only with the specified charger for the battery pack. A charger that may be suitable for one type of battery pack may create a risk of fire when used with another battery pack. Use battery pack only with charger listed.
nFor use with 18V nickel-cadmium and 18 V lithium-ion battery packs, see tool/appliance/ battery pack/charger correlation supplement 987000-432.
nTo reduce the risk of explosion and possible injury, Do not place battery units or their batteries near fire or heat.
nDo not open or mutilate the battery pack. Released electrolyte is corrosive and may cause damage to the eyes or skin. It may be toxic if swallowed.
Do not crush, drop or damage battery pack. Do not use a battery pack or charger that has been dropped or received a sharp blow. A damaged battery is subject to explosion. Properly dispose of a dropped or damaged battery immediately.
nBatteries can explode in the presence of a source of ignition, such as a pilot light. To reduce the risk of serious personal injury, never use any
cordless product in the presence of open flame. An exploded battery pack can propel debris and chemicals. If exposed, flush with water immediately.
nDo not charge unit in a damp or wet location. Following this rule will reduce the risk of electric shock.
nFor best results, your battery unit should be charged in a location where the temperature is more than 50°F but less than 100°F. Do not store outside or in vehicles.
nUnder extreme usage or temperature conditions, battery pack leakage may occur. If liquid comes in contact with your skin, wash immediately with soap and water. If liquid gets into your eyes, flush them with clean water for at least 10 minutes, then seek immediate medical attention.
nDo not dispose of batteries in a fire. The cell may explode. Batteries should be recycled, consult your local waste authority for information regarding available recycling and/or disposal options.
nWhen battery pack is not in use, keep it away from other metal objects like: paper clips, coins, keys, nails, screws, or other small metal objects that can make a connection from one terminal to another. Shorting the battery pack terminals together may cause sparks, burns, or a fire.
nSave these instructions. Refer to them frequently and use them to instruct others who may use this tool. If you loan someone this tool, loan them these instructions also.
6 - English
SYMBOLS
The following signal words and meanings are intended to explain the levels of risk associated with this product.
SYMBOL SIGNAL MEANING
DANGER: |
Indicates an imminently hazardous situation, which, if not |
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avoided, will result in death or serious injury. |
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WARNING: |
Indicates a potentially hazardous situation, which, if not avoided, |
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could result in death or serious injury. |
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CAUTION: |
Indicates a potentially hazardous situation, which, if not avoided, |
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may result in minor or moderate injury. |
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CAUTION: |
(Without Safety Alert Symbol) Indicates a situation that may |
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result in property damage. |
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Some of the following symbols may be used on this product. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the product better and safer.
SYMBOL |
NAME |
DESIGNATION/EXPLANATION |
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Safety Alert |
Indicates a potential personal injury hazard. |
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To reduce the risk of injury, user must read and |
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Read Operator’s Manual |
understand operator’s manual before using this |
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product. |
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Eye, Hearing, and Head |
Always wear eye protection with side shields marked to |
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comply with ANSI Z87.1, along with hearing and head |
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Protection |
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protection |
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Wet Conditions Alert |
Do not expose to rain or use in damp locations. |
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Operate With Two |
Hold and operate the saw properly with both hands. |
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Hands |
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One Handed |
Do not operate the saw using only one hand. |
7 - English
SYMBOLS
Some of the following symbols may be used on this product. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the product better and safer.
SYMBOL |
NAME |
DESIGNATION/EXPLANATION |
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Kickback |
Danger! Beware of kickback. |
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Bar Nose Contact |
Avoid bar nose contact. |
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Wear Gloves |
Wear non-slip, heavy-duty protective gloves when |
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handling the chain saw. |
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Wear Safety Footwear |
Wear non-slip safety footwear when using this |
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equipment. |
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Keep Bystanders |
Keep all bystanders and animals at least 50 ft. away. |
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Away |
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This product uses lithium-ion or nickel-cadmium |
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batteries. Local, state or federal laws may prohibit |
Li - Ion |
Recycle Symbols |
disposal of batteries in ordinary trash. Consult your |
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local waste authority for information regarding available |
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recycling and/or disposal options. |
V |
Volts |
Voltage |
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Direct Current |
Type or a characteristic of current |
8 - English
FEATURES
PRODUCT SPECIFICATIONS
Motor................................................... |
18 Volt DC |
Bar Length.................................................. |
10 in. |
Replacement Bar |
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Part Number............ |
671256002 or 671834007 |
Replacement Chain |
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Part Number................ |
6958301 or 690583002 |
NOTE: This saw was designed for occasional light duty use and has some limitations as to what it can cut.
KNOW YOUR cHAINsAW
See Figure 4.
The safe use of this product requires an understandingoftheinformationontheproductand in this operator’s manual as well as a knowledge of the project you are attempting. Before use of this product, familiarize yourself with all operating features and safety rules.
chain oil tank cap
REAR
HANDLE
CHAIN
BATTERY PACK
HAND GUARD |
FRONT HANDLE |
lock-out button
BATTERY PACK
HEX KEY |
HEX KEY |
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switch trigger |
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storage area |
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Fig. 4 |
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9 - English
ASSEMBLY
UNPACKING
This product has been shipped completely assembled.
Carefully remove the product and any accessories from the box. Make sure that all items listed in the packing list are included.
WARNING:
If any parts are damaged or missing do not operate this product until the parts are replaced. Use of this product with damaged or missing parts could result in serious personal injury.
WARNING:
Do not use this product if it is not completely assembled or if any parts appear to be missing or damaged. Use of a product that is not properly and completely assembled could result in serious personal injury.
Inspect the product carefully to make sure no breakage or damage occurred during shipping.
Do not discard the packing material until you have carefully inspected and satisfactorily operated the product.
If any parts are damaged or missing, please call 1-800-860-4050 for assistance.
WARNING:
Do not attempt to modify this product or create accessories not recommended for use with this product. Any such alteration or modification is misuse and could result in a hazardous condition leading to possible serious personal injury.
WARNING:
To prevent accidental starting that could cause serious personal injury, always remove the battery pack from the product when assembling parts.
PACKING LIST
Chain Saw with Scabbard
Hex Key
Bar and Chain Lubricant
Battery Pack
Charger
Operator’s Manual
OPERATION
WARNING: |
WARNING: |
Do not allow familiarity with this product to make you careless. Remember that a careless fraction of a second is sufficient to inflict serious injury.
Do not use any attachments or accessories not recommended by the manufacturer of this product. The use of attachments or accessories not recommended can result in serious personal injury.
WARNING:
Always wear eye protection with side shields marked to comply with ANSI Z87.1, along with hearing and head protection. Failure to do so could result in objects being thrown into your eyes resulting in possible serious injury.
Before each use, inspect the entire product for damaged, missing, or loose parts such as screws, nuts, bolts, caps, etc. Tighten securely all fasteners and caps and do not operate this product until all missing or damaged parts are replaced. Please call 1-800-860-4050 or contact an authorized service center for assistance.
10 - English
OPERATION
APPLICATIONS
You may use this product for the following purposes:
Limbing and pruning branches from trees
Felling small trees up to 7 in. diameter
Bucking the fallen tree into shorter lengths
This product will accept Ryobi One+ 18 V lithiumion battery packs and Ryobi One+ 18 V nickelcadmium battery packs.
For complete charging instructions, refer to the Operator’s Manual for your Ryobi One+ battery pack and charger models.
TO INSTALL / Remove BATTERY PACK
See Figure 5.
WARNING:
Always remove battery pack from your tool when you are assembling parts, making adjustments, cleaning, carrying, transporting or when not in use. Removing battery pack will prevent accidental starting that could cause serious personal injury.
NOTE: To avoid serious personal injury, always remove the battery pack and keep hands clear of the look-out button when carrying or transporting the tool.
To install:
Place the battery pack in your chain saw. Align raised rib on battery pack with groove in chain saw’s battery port.
Make sure the latches on each side of the battery pack snap in place and that battery pack is secured in chain saw before beginning operation.
To remove:
Locate latches on side of battery pack and depress both sides to release the battery pack from the chain saw.
CAUTION:
Remove battery pack from unit. Fill oil tank with Ryobi Bar and Chain Lubricant before starting the chain saw. Failure to lubricate the chain will cause damage to the bar and chain.
Chain Oil System
See Figure 6.
Use Ryobi Bar and Chain Lubricant. It is formulated to perform over a wide temperature range with no dilution required.
NOTE:Donotusedirty,usedorotherwisecontaminated oils. Damage may occur to the bar or chain.
Carefully pour the bar and chain oil into the tank.
Check and fill the oil tank when battery is recharged, or as needed.
Depress the oil tank cap several times to pump the oil to the chain before starting the saw.
Depress the oil tank cap every 20-30 seconds while cutting to keep the chain lubricated.
NOTE: It is normal for lubricant to seep from the saw when not in use. To prevent seepage, empty the oil tank after each use. When storing the unit for a long period of time (three months or longer) be sure the chain is lightly lubricated; this will prevent rust on the chain and bar sprocket.
battery |
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port |
battery |
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pack |
latches |
Fig. 5 |
CAUTION:
When placing battery pack in your chain saw, be sure raised rib on battery pack aligns with groove in chain saw’s battery port and latches snap in place properly. Improper assembly of battery pack can cause damage to internal
components. |
Fig. 6 |
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11 - English |
OPERATION
STARTING AND STOPPING THE CHAIN SAW
See Figure 7.
WARNING:
Keep body to the left of the chain line. Never straddle the saw or chain, or lean over past the chain line.
Starting the chain saw:
Place the chain saw on a flat bare surface and make sure no objects or obstructions are in immediate vicinity which could come in contact with the bar and chain.
Press and hold the lock-out button. This makes the switch trigger operational.
Press and hold the switch trigger, release the
lock-out button and continue to squeeze the switch trigger for continued operation.
Stopping the chain saw:
Release the switch trigger to stop the chain saw.
Upon release of the switch trigger, the lock-out button will be automatically reset to the lock position.
This cordless chain saw is not designed for cutting trees larger than 5 in. in diameter.
This cordless chain saw is designed for limbing and pruning type cutting, as well as cutting trees up to 5 in. in diameter only.
Preparation for Cutting
Proper Grip on Handles
See Figures 8 - 10.
Refer to Important Safety Instructions earlier in this manual for appropriate safety equipment.
Wear non-slip gloves for maximum grip and protection.
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.
lock-out button
switch trigger
lock-out button
switch |
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trigger |
Fig. 7 |
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12 - English
OPERATION
WARNING:
Never use a left-handed (cross-handed) grip, or any stance which would place your body or arm across the chain line.
Maintain a proper grip on the saw whenever the unit is running. The fingers should encircle the handle and the thumb is wrapped under the handlebar. This grip is least likely to be broken (by a kickback or other sudden reaction of the saw). Any 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.
WARNING:
Do not operate the switch 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.
Fig. 8
Fig. 9
Chain Line |
Fig. 10 |
13 - English
OPERATION
Proper Cutting Stance
See Figure 11.
Weight should be balanced with both feet on solid ground.
Keep left arm with elbow locked in a “straight arm” position to withstand any kickback force.
Your body should always be to the left of the chain line.
Thumb should be on underside of handlebar.
Basic Cutting Procedure
Practice cutting a few small logs using the following technique to get the “feel” of using the saw before you begin a major sawing operation.
Take the proper stance in front of the wood with the saw off.
Squeeze the switch trigger and let the chain accelerate to full speed before entering the cut.
Begin cutting with the saw against the log.
Keep the unit running the entire time you are cutting, maintain a steady speed.
Allow the chain to cut for you; exert only light downward pressure. If you force the cut, damage to the bar, chain, or unit can result.
Release the switch trigger as soon as the cut is completed, allowing the chain to stop. If you run the saw without a cutting load, unnecessary wear can occur to the chain, bar, and unit.
Do not put pressure on the saw at the end of cut.
Work Area Precautions
Cut only wood or materials made from wood, no sheet metal, no plastics, no masonry, no non-wood building materials.
Never allow children to operate the saw. Allow no person to use this chain saw who has not read this Operator’s Manual or received adequate instructions for the safe and proper use of this chain saw.
When felling a tree, keep everyone - 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 15 feet between work-
CHAIN LINE
STRAIGHT ARM POSITION
Fig. 11
ers.Trees should not be felled in a manner that would endanger any person, strike any utility line or cause any property damage. If the tree does make contact with any utility line, the utility company should be notified immediately.
Always cut with both feet on solid ground to prevent being pulled off balance.
Do not cut above chest height, as a saw held higher is difficult to control against kickback forces.
Do not fell trees near electrical wires or buildings. Leave this operation for professionals.
Cut only when visibility and light are adequate for you to see clearly.
Tree Felling
See Figures 12 - 15.
Unusual Hazardous Tree Felling Conditions
Do not fell trees during periods of high wind or heavy precipitation. Wait to do your cutting until the hazard has ended.
WARNING:
Do not cut down trees having an extreme lean or trees that have rotten limbs, loose bark, or hollow trunks. Have these trees pushed or dragged down with heavy equipment, then cut them up.
DANGER:
Electrocution hazard. Do not cut trees or branches near power lines or electrical wires. Contact with power lines or live electrical wires will result in serious personal injury or possible death.
14 - English
OPERATION
WARNING:
Do not cut trees or branches near buildings, which may result in serious injuries or property damage.
WARNING:
Check the tree for damaged or dead branches that could fall and hit you during felling.
WARNING:
Periodically glance at the top of the tree during the backcut to assure the tree is going to fall in the desired direction.
The chain saw operator should keep on the uphill side of the terrain as the tree is likely to roll or slide downhill after it is felled.
Remove dirt, stones, loose bark, nails, staples, and wire from the tree where felling cuts are to be made.
Notched Undercut. Cut a notch about 1/3 the diameter of the tree, perpendicular to the direction of fall. Make the cuts of the notch so they intersect at a right angle 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 13.
planned line of fall
WARNING:
If the tree starts to fall in the wrong direction, |
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or if the saw gets caught or hung up during the |
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fall, leave the saw and save yourself! |
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safe |
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Felling a tree - When bucking and felling opera- |
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90° retreat |
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zone |
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tions are being performed by two or more per- |
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sons, at the same time, the felling operation |
Planned path of safe retreat 135° from planned |
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should be separated from the bucking operation |
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line of fall |
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by a distance of at least twice the height of the |
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safe |
tree being felled. Trees should not be felled in a |
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retreat |
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manner that would endanger any person, strike |
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planned |
135° |
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zone |
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any utility line or cause any property damage. If |
45° |
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line of fall |
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the tree does make contact with any utility line, the |
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90° |
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utility company should be notified immediately. |
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135° |
45° |
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Before any cuts are started, pick your escape |
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safe |
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route (or routes in case the intended route is |
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retreat |
blocked); clear the immediate area around the |
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zone |
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Fig. 12 |
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tree and make sure there are no obstructions |
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in your planned path of retreat. Clear path of |
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safe retreat approximately 135° from planned |
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line of fall. The retreat path should extend back |
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HINGE |
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and diagonally to the rear of the expected line |
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2 in. or 1/10 DIA |
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of fall. See Figure 12. |
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Before felling is started, consider the force and |
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NOTCH - |
direction of the wind, the lean and balance of |
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APPROX. 1/3 |
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the tree, and the location of large limbs. These |
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DIAMETER OF |
things influence the direction in which the tree |
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TRUNK |
will fall. Do not try to fell a tree along a line dif- |
BACK CUT |
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ferent from its natural line of fall. |
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2 in. |
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Fig. 13 |
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15 - English |
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OPERATION
Felling Backcut. The backcut is always made level and horizontal, and at a minimum of 2 in. above the horizontal cut of the notch. See Figures 13 - 14.
Never cut through to the notch. Always leave a band of wood between the notch and backcut (approximately 2 in. or 1/10 the diameter of the tree). This is called “hinge” or “hingewood.” It controls the fall of the tree and prevents slipping or twisting or shoot-back of the tree off the stump. See Figures 13 - 14.
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. The wedges can be driven in, little by little, to help jack the tree over. See Figure 15.
As tree starts to fall, stop the chain saw and put it down immediately. Retreat along the cleared path, but watch the action in case something falls your way. Be alert for overhead limbs or branches that may fall and watch your footing.
WARNING:
Never cut through to the notch when making a backcut. The hinge controls the fall of the tree, this is the section of wood between the notch and backcut.
Bucking
See Figures 16 - 19.
Bucking is the term used for cutting a fallen tree to the desired log length.
Always make sure your footing is secure and your weight is distributed evenly on both feet.
Cut only one log at a time.
Support small logs on a saw horse or another log while bucking.
Keepaclearcuttingarea.Makesurethatnoobjects can contact the guide bar nose and chain during cutting, this can cause kickback. Refer to Precautions Against Kickback earlier in this manual.
When bucking on a slope, always stand on the uphill side of the log. To maintain complete control of the chain saw when cutting through the log, release the cutting pressure near the end of the cut without relaxing your grip on the chain saw
NOTCH
BACK CUT
HINGE |
Fig. 14 |
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wedge |
Fig. 15 |
kickback |
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Fig. 16
Fig. 17
16 - English
OPERATION
handles. Do not let the chain contact the ground. After completing the cut, wait for the saw chain to stop before you move the chain saw. Always stop the motor before moving from tree to tree.
Sometimes it is impossible to avoid pinching (with just standard cutting techniques) or difficult to predict which way a log will settle when cut. To avoid pinching while cutting, rotate or move the log so that the pinch is eliminated.
BUCKING Logs Under Stress
See Figures 18 - 19.
When the log is supported along its entire length, it should be cut from the top or overbucking.
When the log is supported on one end, cut 1/3 the diameter from the underside or underbucking. Then make the finishing cut by overbucking to meet the first cut.
As the log is being cut, it will tend to bend. The saw can become pinched or hung in the log if you make thefirstcutdeeperthan1/3ofthediameterofthelog.
Give special attention to logs under stress to prevent the bar and chain from pinching.
When bucking on a slope, always stand on the uphill side of the log as shown in figure 18. When “cutting through,” to maintain complete control of the chain saw, release the cutting pressure near the end of the cut without relaxing your grip on the chain saw handles. Do not let the chain contact the ground. After completing the cut, wait for the saw chain to stop before you move the chain saw. Always stop the motor before moving from tree to tree.
Types of Cutting Used
See Figure 19.
Overbucking
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.
Underbucking
Begin on the under side of the log with the top of the saw against the log; exert light pressure upward. During underbucking, the saw will tend to push back at you. Be prepared for this reaction and hold the saw firmly to maintain control.
WARNING:
Never climb into a tree to limb or prune. Do not stand on ladders, platforms, a log, or in any position which can cause you to lose your balance or control of the saw.
Log Supported at One End: LOAD
finishing cut
1st CUT 1/3 Dia
Log Supported at Both Ends: LOAD
1st CUT 1/3 Dia
FINISHING CUT |
Fig. 18 |
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Overbucking |
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Underbucking
Fig. 19
17 - English
OPERATION
Limbing
See Figure 20.
Limbing is removing branches from a fallen tree.
Work slowly, keeping both hands on the chain saw with a firm grip. Always make sure your footing is secure and your weight is distributed evenly on both feet.
Leave the larger support limbs under the tree to keep the tree off the ground while cutting.
Limbs should be cut one at a time. Remove the cut limbs from the work area often to help keep the work area clean and safe.
Branches under tension should be cut from the bottom up to avoid binding the chain saw.
Keep the tree between you and the chain saw while limbing. Cut from the side of the tree opposite the branch you are cutting.
Pruning
See Figure 21.
Pruning is trimming limbs from a live tree.
Work slowly, keeping both hands on the chain saw with a firm grip. Always make sure your footing is secure and your weight is distributed evenly on both feet.
Do not cut from a ladder, this is extremely dangerous. Leave this operation for professionals.
Do not cut above chest height as a saw held higher is difficult to control against kickback.
When pruning trees it is important not to make the finishing 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.
Underbuckthebranch1/3throughforyourfirstcut.
Your second cut should overbuck to drop the branch off.
Now make your finishing cut 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.
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. Watch out for springpoles, they are dangerous.
WARNING:
Springpoles are dangerous and could strike the operator, causing the operator to lose control of the chain saw. This could result in severe or fatal injury to the operator.
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2 |
3 |
1 |
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4 |
CUT LIMBS ONE AT A TIME AND leave support limbs under tree until log is cut
Fig. 20
LOAD |
Second cut |
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First cut 1/3 diameter
Finishing cut
Fig. 21
SPRINGPOLE
Springpoles
See Figure 22. |
Fig. 22 |
A springpole is any log, branch, rooted stump, or sapling which is bent under tension by other wood
18 - English
MAINTENANCE
WARNING:
When servicing, use only identical replacement parts. Use of any other parts may create a hazard or cause product damage.
WARNING:
Toavoidseriouspersonalinjury,alwaysremovethe battery pack from the product when cleaning or performing any maintenance.
GENERAL MAINTENANCE
Before each use, inspect the entire product for damaged, missing, or loose parts such as screws, nuts, bolts, caps, etc. Tighten securely all fasteners and caps and do not operate this product until all missing or damaged parts are replaced. Please call 1-800-860-4050 or contact an authorized service center for assistance.
Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from various types of commercial solvents and may be damaged by their use. Use clean cloths to remove dirt, dust, oil, grease, etc.
WARNING:
Do not at any time let brake fluids, gasoline, petroleum-based products, penetrating oils, etc., come in contact with plastic parts. Chemicals can damage, weaken or destroy plastic which may result in serious personal injury.
Only the parts shown on the parts list are intended to be repaired or replaced by the customer. All other parts should be replaced at an Authorized Service Center.
BATTERY PACK REMOVAL AND PREPARATION FOR RECYCLING
WARNING:
Upon removal, cover the battery pack’s terminals with heavy-duty adhesive tape. Do not attempt to destroy or disassemble battery pack or remove any of its components. Lithium-ion and nickel-cadmium batteries must be recycled or disposed of properly. Also, never touch both terminals with metal objects and/or body parts as short circuit may result. Keep away from children. Failure to comply with these warnings could result in fire and/or serious injury.
19 - English
MAINTENANCE
REPLACing Bar and Chain
See Figures 23 - 27.
warning:
Remove the battery pack from the chain saw and make sure the chain has stopped before you do any work on the saw. Failure to do so may result in accidental starting and possible serious injury.
WARNING:
The safety instructions in this section are to protect the user from serious personal injury.
Recommended Bar and Chain Combinations
Bar Part Number - 10 in.
671256002 or 671834007
Chain Part Number
6958301 or 690583002
sprocket |
adjusting |
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pin |
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bar |
CAUTION: |
washer |
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Always wear gloves when handling the bar and |
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chain; these components are sharp and may |
chain |
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contain burrs. |
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chain |
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chain tension |
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cover |
WARNING: |
pin hole |
chain |
screw |
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cover |
Fig. 23 |
Never touch or adjust the chain while the motor is running. The saw chain is very sharp; always wear protective gloves when performing maintenance to the chain to avoid possible serious lacerations.
Remove the battery pack before you do any work on the chain saw.
Remove the hex key from the storage area and |
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use it to remove the chain cover screw, washer |
chain drive |
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and chain cover from the chain saw. |
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links |
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Remove the bar and chain from mounting surface. |
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bar |
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Remove the old chain from the bar. |
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groove |
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Lay out the new saw chain in a loop and |
Fig. 24 |
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straighten any kinks. The cutters should face in |
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the direction of chain rotation. If they face the |
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opposite direction, turn the loop over. |
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Place the chain drive links into the bar groove. |
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Position the chain so there is a loop at the back of |
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the bar. Hold the chain in position on the bar and |
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place the loop around the sprocket of the chain |
Chain |
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saw. Fit the bar flush against the mounting surface |
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so that the bar stud is in the long slot of the bar. |
tensioning |
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screw |
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NOTE: When placing the bar on the bar stud, |
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assure that the adjusting pin is in the chain ten- |
Fig. 25 |
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sion pin hole. |
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20 - English |
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MAINTENANCE
Replace the chain cover, washer and chain cover screw. Tighten the chain cover screw finger tight only. The bar must be free to move for tension adjustment.
Remove all the 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.
Lift the tip of the guide bar up to check for sag. Release the tip of the guide bar and turn the chain tensioning screw 1/2 turn clockwise. Repeat this process until sag does not exist.
Hold the tip of the guide bar up and tighten the bar mounting screw securely.
Chain is correctly tensioned when there is no sag on the underside of the guide bar, the chain is snug, but it can be turned by hand without binding.
NOTE: If chain is too tight, it will not rotate. Loosen the chain cover screw slightly and turn tension adjuster 1/4 turn counterclockwise. Lift the tip of the guide bar up and retighten chain cover screw securely. Assure that the chain will rotate without binding.
Place the hex key back into the storage area.
Chain Tension
See Figures 28 - 29.
Stop the engine before setting the chain tension. Make sure the guide bar screw is loosened to finger tight, turn the chain tensioner clockwise to tension the chain. Refer to Replacing Bar and Chain earlier in this manual for additional information.
A cold chain is correctly tensioned when there is no slack on the underside of the guide bar, the chain is snug, but it can be turned by hand without binding.
Chain must be re-tensioned whenever the flats on the drive links hang out of the bar groove.
During normal saw operation, the temperature of the chain will increase. The drive links of a correctly tensioned warm chain will hang approximately .050 in. out of the bar groove.
NOTE: New chain tends to stretch, check chain tension frequently and tension as required.
CAUTION:
Chain tensioned while warm, may be too tight upon cooling. Check the “cold tension” before next use.
Lift the tip of the guide bar up to check for sag
Fig. 26
hex key
Fig. 27
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Approx. .050 in. |
Fig. 28 |
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flats
Fig. 29
21 - English
MAINTENANCE
Chain Maintenance
See Figures 30 - 31.
WARNING:
Cutting
Corner
Top Plate |
Side Plate |
Remove the battery pack and make sure the chain |
Rivet Hole |
Depth Gauge |
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has stopped before you do any work on the saw. |
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Use only low-kickback chain on this saw. This |
Heel |
Toe |
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fast-cutting chain will provide kickback reduction |
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Gullet |
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when properly maintained. |
Fig. 30 |
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For smooth and fast cutting, chain needs to be |
check for wear |
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maintained properly. The chain requires sharpen- |
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or damage |
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ing when the wood chips are small and powdery, |
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the chain must be forced through the wood during |
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cutting, or the chain cuts to one side. During main- |
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tenance of your chain, consider the following: |
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Improper filing angle of the side plate can |
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increase the risk of a severe kickback. |
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Raker (depth gauge) clearance. |
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Too low increases the potential for kickback. |
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Not low enough decreases cutting ability. |
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If cutter teeth have hit hard objects such as nails |
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and stones, or have been abraded by mud or sand |
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Fig. 31 |
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on the wood, have service dealer sharpen chain. |
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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 Ryobi Service dealer.
How to Sharpen the Cutters |
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See Figures 32 - 33. |
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Be careful to file all cutters to the specified angles |
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and to the same length, as fast cutting can be |
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obtained only when all cutters are uniform. |
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Fig. 32 |
Wear gloves for protection. Properly tension |
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the chain prior to sharpening. Refer to Chain |
LEFT HAND |
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Tension Section earlier in this manual. Do all |
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CUTTERS |
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of your filing at the mid-point of the bar. |
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Use a 5/32 in. diameter round file and holder. |
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Keep the file level with the top plate of the tooth. |
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Do not let the file dip or rock. |
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Using light but firm pressure, stroke towards the |
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front corner of the tooth. |
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Lift file away from the steel on each return stroke. |
RIGHT HAND |
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Put a few firm strokes on every tooth. File all left |
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hand cutters in one direction. Then move to the |
CUTTERS |
Fig. 33 |
other side and file the right hand cutters in the |
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opposite direction. Occasionally remove filings |
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from the file with a wire brush. |
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22 - English |
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MAINTENANCE
WARNING:
Improper chain sharpening increases the potential of kickback.
WARNING:
Failure to replace or repair damaged chain can cause serious injury.
WARNING:
The saw chain is very sharp, always wear protective gloves when performing maintenance to the chain.
Top Plate Filing Angle
See Figure 34.
CORRECT 30° - File holders are marked with guide marks to align file properly to produce correct top plate angle.
LESS THAN 30° - For Cross Cutting.
MORE THAN 30° - Feathered Edge Dulls Quickly.
Side Plate Angle
See Figure 35.
CORRECT - 80° Produced automatically if correct diameter file is used in file holder.
HOOK - “Grabs” and dulls quickly. Increases potential of KICKBACK.
Results from using a file with diameter too small, or file held too low.
BACKWARD SLOPE - Needs too much feed pressure, causes excessive wear to bar and chain.
Results from using a file with diameter too large, or file held too high.
Use a flat file and a depth gauge jointer to lower all gauges uniformly. Depth gauge jointers are available in .020 in. to .035 in. Use a .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.
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.
correcT TOP PLATE |
INcorrecT TOP PLATE FILING |
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FILING ANGLE |
ANGLE |
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LESS |
MORE |
30° |
THAN 30° |
THAN 30° |
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Fig. 34
correct SIDE |
INcorrect SIDE PLATE |
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PLATE FILING |
FILING ANGLE |
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ANGLE |
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HOOK |
BACKWARD |
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SLOPE |
80° |
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Fig. 35
raker clearance
.025 in.
Depth Gauge Clearance
See Figure 36 - 38. Fig. 36
The depth gauge should be maintained at a clearance of .025 in. Use a depth gauge tool for checking the depth gauge clearances.
Every time the chain is filed, check the depth gauge clearance.
23 - English
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