INSTRUCTION MANUAL CHAIN SAW CS-680 WARNING Read the instructions carefully and follow the rules for safe operation. Failure to do so could result in serious injury.
WARNING The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Copyright © 2008 All Rights Reserved.
RULES FOR SAFE OPERATION A. Kickback Safety Precautions for Chain Saw Users WARNING! KICKBACK may occur when the nose or tip of the guide bar touches an object, or when the wood closes in and pinches the saw chain in the cut. 1.With a basic understanding of kickback, you can reduce or eliminate the element of surprise. Sudden surprise contributes to accidents. Tip contact in some cases may cause a lightning fast reverse REACTION, Kicking the guide bar up and back towards the operator.
B. Other Safety Precautions 1.Do not operate a chain saw with one hand! Serious injury to the operator, helpers, bystanders, or any combination of these persons may result from onehanded operation. A chain saw is intended for two-handed use. 11.Shut off the engine before setting the chain saw down. 2.Do not operate a chain saw when you are fatigued. 13.When 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. 12.
CONTENTS RULES FOR SAFE OPERATION ............................................................................ SYMBOLS AND SIGNS ........................................................................................... PACKING LIST ......................................................................................................... NOMENCLATURE OF PARTS ................................................................................ OPERATOR SAFETY .....................................................
SYMBOL FORM Symbol form/shape Symbol description/application Symbol form/shape Symbol description/application CAUTION: For safe Choke control “Cold Start” operation follow all safety position (choke closed) precautions and instructions in Operator’s Manual Wear eyes, ears and head protection Oil and gasoline mixture Tip contact may cause the guide bar to move suddenly upward and backward, which may cause serious injury Chain oil fill Contact of the guide bar tip with any object should be avoided Chain
PACKING LIST The ECHO product you purchased has been factory pre-assembled for your convenience. Due to packaging restrictions, guide bar and saw chain installation and other assembly may be necessary. After opening the carton, check for damage. Immediately notify your retailer or ECHO dealer of damaged or missing parts. Use the packing list to check for missing parts.
NOMENCLATURE OF PARTS 6 1 5 7 4 8 3 9 X505-002041 10 11 12 2 13 14 Part Number X505-006660 22 23 X505-006660 X524-002251 890191-31731 Part Number X524-002251 REPLACEMENT BAR AND CHAIN GUIDE BAR* CHAIN* PART NO. PART NO. 16” 16D0PS3860 72LPX60CQ 20” 20D0PS3870 72LPX70CQ 24” 24D0PS3881 72LPX81CQ 27” 27D0PS3893 72LPX93CQ *Or equivalent Note: There may be other replacement components for achieving kickback protection.
NOMENCLATURE OF PARTS 11. Chain tension adjuster - Device to adjust chain tension. 1. Instruction manual - Included with unit. Read before operation and keep for future reference to learn proper, safe operating techniques. 12. Chain catcher - A projection designed to reduce the risk of the operator’s right hand from being hit by a chain which has broken or derailed from the guide bar during cutting. 2. Safety manual - Describe operating and safety instructions for this chain saw. 13.
OPERATOR SAFETY VIBRATION AND COLD EYE AND HEARING PROTECTION s )T IS BELIEVED THAT A CONDITION CALLED 2AYNAUD S Phenomenon, which affects the fingers of certain individuals, may be brought about by exposure to vibration and cold. Exposure to vibration and cold may cause tingling and burning followed by loss of color and numbness in the fingers. The following precautions are strongly recommended because the minimum exposure which might trigger the ailment is unknown.
SPARK ARRESTOR MUFFLER s 4HE SPARK ARRESTOR MUFmER CONTROLS THE EXHAUST noise and prevents hot, glowing particles of carbon from leaving the muffler. Make sure the spark arrestor screen is in good repair and properly seated in the muffler. s #ERTAIN INTERNAL COMBUSTION ENGINES OPERATED ON forest, brush, and/or grass-covered areas in the states of Washington, Oregon, Idaho, California, Minnesota, New Jersey and Maine, are required to be equipped with a spark arrestor.
PREPARATION FOR USE WARNING Saw chain is sharp! Always wear gloves when handling assembly, otherwise serious personal injury may result. GUIDE BAR AND SAW CHAIN INSTALLATION/REMOVAL Brake lever (Front hand guard) NOTICE Move the chain brake lever (Front hand guard) fully rearward to remove or install the clutch cover to chain saw. Clutch cover 1. Remove spark plug lead. (See page 25) Two nuts 2. Remove two clutch cover nuts and remove clutch cover. Spiked bumper 3.
7. Turn saw over and check brake band for correct position on clutch drum. If brake band is not in place around drum, remove cover, make sure brake is unlocked, and reinstall. Tighten clutch cover nuts finger tight. WARNING Improper clutch cover assembly can result in serious injury, and will cause severe saw damage if unit is started. Never start or operate saw if brake band is not in place on clutch drum. Always check chain brake operation after replacing cover.
FUEL AND LUBRICANT FUEL STATEMENT GASOLINE - Use 89 Octane [(R+M)/2] (mid grade or higher) gasoline or gasohol known to be good quality. Gasohol may contain up to 10 % Ethyl (grain) alcohol or 15 % MTBE (methyl teriary-butyl ether). Gasohol containing methyl (wood) alcohol is not approved. WARNING Alternative fuels, such as E-20 (20 % ethanol), E-85 (85 % ethanol) or any fuels not meeting above requirements are not approved for use in ECHO 2-stroke gasoline engines.
HANDLING FUEL MIXING INSTRUCTIONS 1. Fill an approved fuel container with half of the required amount of gasoline. DANGER Fuel is very flammable. Use extreme care when mixing, storing or handling or serious personal injury may result. s 5SE AN APPROVED FUEL CONTAINER s $O NOT SMOKE NEAR FUEL s $O NOT ALLOW mAMES OR SPARKS NEAR FUEL s &UEL TANKS CANS MAY BE UNDER PRESSURE Always loosen fuel caps slowly allowing pressure to equalize. s .EVER REFUEL A UNIT WHEN THE ENGINE IS HOT s .
CHAIN LUBRICANT Proper lubrication of the chain while in operation reduces friction between the chain and the guide bar to a minimum and assures a longer service life. Cap indication Oil/fuel tanks are indicated by the following illustrations on the caps. Oil tank cap s 5SE BAR AND CHAIN OIL OF HIGH QUALITY FOR THIS purpose. s $O NOT USE USED OR RECLAIMED OIL TO AVOID VARIOUS oiler problems. s 5SE %#(/ BAR AND CHAIN OIL s 7HEN %#(/ BAR AND CHAIN OIL IS NOT AVAILABLE Use motor oil, etc.
WHEN THE ENGINE IS COLD Chain brake CAUTION Make sure the bar and chain are free from any obstruction when starting the chain saw. s -OVE CHAIN BRAKE LEVER FULLY FORWARD TO LOCK chain brake before starting. s &ILL THE FUEL TANK WITH FUEL MIXTURE It is not permitted to fill fuel above the shoulder level of fuel tank. Choke Throttle trigger lockout Start / Run Throttle trigger s &ILL THE CHAIN OIL TANK WITH LUBRICANT Do not over fill. Ignition switch s -OVE IGNITION SWITCH TO hRun” position.
RUNNING Unlock chain brake s 7HEN ENGINE STARTS KEEP IDLING FOR A FEW minutes. s 3ET THE BRAKE LEVER IN THE UNLOCKED POSITION before starting to cut. s 0ULL THROTTLE TRIGGER GRADUALLY AND INCREASE revolution of the engine. s 4HE CHAIN STARTS RUNNING WHEN THE ENGINE reaches 3800 r/min approximately. s #ONlRM PROPER ACCELERATION AND LUBRICATION OF chain and bar. s 'IVE SEVERAL STROKES TO MANUAL OILER BUTTON TO confirm extra lubrication. s $O NOT RUN THE ENGINE AT HIGH SPEED unnecessarily.
CUTTING INSTRUCTION GENERAL CAUTION s 2EAD THE %#(/ h#(!). 3!7 3!&%49 MANUAL” included with your chain saw for additional cutting and safety instructions. s 7EAR SUITABLE HEARING PROTECTION SUCH AS earmuffs or earplugs to protect against objectionable or uncomfortable loud noises. s $O NOT LET THE TIP OF THE BAR TOUCH ANYTHING while the engine is running. At cutting speed the chain is moving at a high rate of speed.
FELLING THE TREE A falling tree can seriously damage anything it may hit - a car, a house, a fence, a power-line, or another tree. There are ways to make a tree fall where you want it, so first decide where that is! Before cutting, clear the area around the tree. You will need good footing while working and you should be able to work the saw without hitting any obstacles. Next, select a path of retreat.
LIMBING Limbing a fallen tree is much the same as bucking. Never stand on the tree that you are limbing. When limbing, caution is the word. Be careful of the tip touching other limbs. Always use both hands. Don’t cut with the saw overhead or aligned vertically with your body. If the saw should kickback, you may not have enough control to prevent possible injury. BUCKING Bucking is the sawing of a log or fallen tree into smaller pieces. There are a few basic rules which apply to all bucking operations.
CHAIN BRAKE OPERATION Kickback motion s 3ET THE LEVER IN THE UNLOCKED POSITION BEFORE starting to cut. s )F THE BRAKE IS TRIPPED BY KICKBACK REACTION THE chain will stop immediately. Release the throttle to avoid possible damage to the engine or clutch. s $O NOT ATTEMPT TO OPERATE THE ENGINE WITH THE brake locked. Improper thrust cutting Kickback motion When the bar nose hits another tree, etc.
AUTOMATIC CHAIN BRAKE End of the guide bar may be placed at the height of about 35 cm (14 in.). Kickback produced from the tip of the guide bar will trip the automatic chain brake. To make sure that the automatic chain brake operates properly, follow these steps: 1. Stop the engine. 2. Hold the saw with the guide bar approximately 35 cm (14 in.) above a wooden surface. Right hand should hold the rear handle, and left hand should hold the front handle. 3.
CHAIN AND GUIDE BAR COMBINATION The following combinations are recommended for model CS-680. Guide bar ECHO Part No. Length mm (in.) Symmetrical 406 (16) 16D0PS3860 508 (20) 20D0PS3870 Saw chain Pitch mm (in.) ECHO Part No. Links 72LPX60CQ 60 72LPX70CQ 70 9.53 (3/8) 610 (24) 24D0PS3881 72LPX81CQ 81 686 (27) 27D0PS3893 72LPX93CQ 93 GUIDE BAR Replacement guide bars. The following guide bars may be considered to have equivalent kickback energy.
MAINTENANCE AND CARE Your ECHO chain saw is designed to provide many hours of trouble free service. Regular scheduled maintenance will help your chain saw achieve that goal. If you are unsure or are not equipped with the necessary tools, you may want to take your unit to an ECHO Service Dealer for maintenance. To help you decide whether you want to DO-IT-YOURSELF or have the ECHO Dealer do it, each maintenance task has been graded. If the task is not listed ask your ECHO dealer for repairs.
CARBURETOR ADJUSTMENT Every unit is run at the factory and the carburetor is set in compliance with Emission Regulations. In addition, the carburetor is equipped with “H” (High Speed) and “L” (Low Speed) needle adjustment limiters that prevent settings outside acceptable limits. Idle adjusting screw High speed needle (H) 1. Before adjusting carburetor clean or replace air filter and muffler “Spark Arrestor Screen”. 2. Make sure the bar and chain are properly adjusted. 3.
Air cleaner cover AIR FILTER Cleaner cover latch s #HECK BEFORE EVERY USE s #LOSE CHOKE ). s 2ELEASE THE CLEANER COVER LATCH AND REMOVE AIR cleaner cover and filter. s "RUSH OFF DUST LIGHTLY OR CLEAN WITH COMPRESSED air, or replace the air filter. s 2EINSTALL AIR lLTER AND COVER ENGAGE LATCH Air cleaner cover Spark plug Cylinder cover CHECK FUEL SYSTEM s #HECK BEFORE EVERY USE s !FTER REFUELING MAKE SURE FUEL DOES NOT LEAK from around fuel pipe, fuel grommet or fuel tank cap.
GUIDE BAR Groove s #LEAN BEFORE USING - Clean the groove of the guide bar with a small screwdriver. - Clean oil holes with a wire. s 2EVERSE GUIDE BAR PERIODICALLY s #HECK SPROCKET AND THE CLUTCH AND CLEAN THE BAR mount area before installation of the bar. Replace either or both if worn. Oil hole (Clutch) Sprocket SPROCKET Worn : 0.5 mm (0.02 in.) s ! DAMAGED SPROCKET WILL CAUSE PREMATURE damage or wear of saw chain. - When the sprocket has worn out 0.5 mm (0.02 in.) or more, replace it.
SETTING THE SAW CHAIN Preset tie strap Left hand cutter Drive link Top plate Side plate Guard link Depth gauge Tie strap Right hand cutter Important points for proper maintenance of saw chain: s +EEP THE CUTTERS SHARP AT ALL TIMES s +EEP THE LEFT AND THE RIGHT CUTTERS PROPERLY aligned. - Note that blunt or irregular cutters will result in poor cutting performance, increased vibration of chains and premature breakage of the saw chain.
1/5 One fifth of file diameter remains above cutter edge s 0LACE THE DEPTH GAUGE TOOL lRMLY ON GUIDE BAR so that depth gauge protrudes. Then file top of depth gauge with the flat file until flat with top of the depth gauge tool. Depth gauge tool Remove until flat with tool - Be sure to round off the front edge of the depth gauge. Round off the edge Properly filed cutters are shown in illustration. 55° When setting of the chain is finished, soak it in oil and wash away filings completely before using.
TROUBLESHOOTING Problem Engine — hard to start Cause Remedy — does not start Engine cranks Fuel at carburetor Fuel at cylinder s &UEL lLTER CLOGGED s #LEAN OR REPLACE s &UEL LINE CLOGGED s #LEAN s #ARBURETOR s !SK YOUR %#(/ DEALER No fuel at cylinder s #ARBURETOR s !SK YOUR %#(/ DEALER Muffler wet with fuel s &UEL MIXTURE IS TOO RICH s /PEN CHOKE No fuel at carburetor s #LEAN REPLACE AIR lLTER s !DJUST CARBURETOR s !SK YOUR %#(/ DEALER Spark at end of plug wire No spark at end of pl
STORAGE AFTER USE s )NSPECT AND ADJUST EVERY PART OF THE CHAIN SAW - Completely clean every part and repair if necessary. - Apply thin coating of oil on metal parts to prevent rust. s 2EMOVE CHAIN AND GUIDE BAR s $RAIN FUEL TANK PULL STARTER SLOWLY A FEW TIMES TO drain fuel from carburetor. s 0OUR A SMALL AMOUNT OF CLEAN MOTOR OIL INTO SPARK plug hole, pull starter and crank the engine until piston reaches: TOP DEAD CENTER.
WARRANTY STATEMENTS ECHO LIMITED WARRANTY STATEMENT FOR PRODUCT SOLD IN USA AND CANADA BEGINNING 01/01/2010 ECHO’S RESPONSIBILITY ECHO Incorporated’s Limited Warranty, provides to the original purchaser that this ECHO product is free from defects in material and workmanship.
PURCHASED REPAIR PARTS, SHORT BLOCKS AND ACCESSORIES s DAY RESIDENTIAL OR NON INCOME PRODUCING WARRANTY s DAY COMMERCIAL INSTITUTIONAL AGRICULTURAL INDUSTRIAL INCOME PRODUCING OR RENTAL APPLICATION WARRANTY ATTENTION TWO-STROKE ENGINE POWER PRODUCT OWNERS This ECHO two-stroke engine power product is a quality-engineered unit which has been manufactured to exact tolerances to provide superior performance.
