OPERATOR'S MANUAL CHAIN SAW CS-620PW 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 © 2017 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 WARNING!! Oil and gasoline mixture Read and follow all safety precaution in the Operator's Manual. Failure to follow instructions could result in serious personal injury.
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 5 6 7 4 3 8 9 10 11 12 3 1 13 14 24 25 X505-009510 23 22 2 21 20 15 Part Number X505-009510 16 17 18 19 * If a decal cannot be read, a new one can be ordered from your ECHO dealer.
NOMENCLATURE OF PARTS 1. Operator's manual - Included with unit. Read before operation and keep for future reference to learn proper, safe operating techniques. 12. Guide bar - The part that supports and guides the saw chain. 13. Saw chain - Chain, serving as a cutting tool. 14. Bar tip guard - Anti-kickback device attached on the bar nose. 2. Safety manual - Describe operating and safety instructions for this chain saw. 15. Oil tank cap - For closing the oil tank. 3.
OPERATOR SAFETY VIBRATION AND COLD EYE AND HEARING PROTECTION • It is believed that a condition called Raynaud’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 • The spark arrestor muffler 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. • Certain 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. KICK GUARD® TO BAR INSTRUCTIONS Bolt (A) Front hole (B) Tools Needed: Two 11 mm (7/16 in.) Wrenches. For saws with Kick Guard® P/N 2893201 and Symmetrical Low-Kick type (Double Guard) guide bars. Dimple (D) 1. Install bolt (A) in front hole (B) of Kick Guard® and through front hole (C) in guide bar. ® Kick Guard 2.
ADJUSTING CHAIN TENSION IMPORTANT Unlock chain brake Always loosen clutch cover nuts before turning the chain tension adjuster, otherwise the clutch cover and tensioner will be damaged. 1. Remove spark plug lead. (See page 26) 2. Unlock the chain brake and loosen two clutch cover nuts, if necessary. 3. Hold the bar nose up, and turn the tension adjuster clockwise until chain fits snugly against underside of the bar. Proper tension Improper tension Direction to tension the chain Tension adjuster 4.
FUEL AND LUBRICANT FUEL STATEMENT Gasoline - Use 89 Octane [R+M/2] (mid grade or higher) gasoline known to be good quality. Gasoline may contain up to 10% Ethanol (grain alcohol) or 15% MTBE (methyl tertiary-butyl ether). Gasoline containing methanol (wood alcohol) is not approved. ECHO Red Armor™ Fuel (Power Fuel™) is 93 octane, ethanol-free fuel premixed with ECHO Red Armor™ engine oil at 50:1 ratio.
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. • Use an approved fuel container. • Do not smoke near fuel. • Do not allow flames or sparks near fuel. • Fuel tanks/cans may be under pressure. Always loosen fuel caps slowly allowing pressure to equalize.
EMISSION DATA EMISSION CONTROL PRODUCT EMISSION DURABILITY (EMISSION COMPLIANCE PERIOD) The 300 hours emission compliance period is the time span selected by the manufacturer certifying the engine emissions output meets applicable emissions regulations, provided that approved maintenance procedures are followed as listed in the Maintenance Section of this manual. (EXHAUST and EVAPORATIVE) EPA 2010 and/ or C.A.R.B.
OPERATION WARNING Chain brake Ignition switch • After choke control knob is pulled and then knob is returned to original position, throttle remains a little open (latch condition). • If engine is started in this latch condition, chain starts to turn. Do not start engine before chain brake is activated.
WHEN THE ENGINE IS COLD Chain brake CAUTION Make sure the bar and chain are free from any obstruction when starting the chain saw. Ignition switch • Move chain brake lever fully forward to lock chain brake before starting. Decompression device • Fill the fuel tank with fuel mixture. It is not permitted to fill fuel above the shoulder level of fuel tank. Start / Run • Fill the chain oil tank with lubricant. Do not over fill. Choke • Move ignition switch to Run position.
RUNNING Unlock chain brake • When engine starts, keep idling for a few minutes. • Set the brake lever in the unlocked position before starting to cut. • Pull throttle trigger gradually and increase revolution of the engine. • The chain starts running when the engine reaches 4000 r/min approximately. • Confirm proper acceleration and lubrication of chain and bar. • Do not run the engine at high speed unnecessarily. • Be sure that saw chain stops moving when throttle trigger is released.
CUTTING INSTRUCTION GENERAL CAUTION • Read the ECHO “CHAIN SAW SAFETY MANUAL” included with your chain saw for additional cutting and safety instructions. • Wear suitable hearing protection such as earmuffs or earplugs to protect against objectionable or uncomfortable loud noises. • Do 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 • Set the lever in the unlocked position before starting to cut. • If the brake is tripped by kickback reaction, the chain will stop immediately. Release the throttle to avoid possible damage to the engine or clutch. • Do 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 40 cm (16 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 40 cm (16 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-620PW. Guide bar ECHO Part No. Length mm (in.) Symmetrical 406 (16) 16D0PS3860 457 (18) 18D0PS3866 508 (20) 20D0PS3870 610 (24) 24D0PS3881 686 (27) 27D0PS3893 Saw chain Pitch mm (in.) ECHO Part No. Links 9.53 (3/8) 72LPX60CQ 72LPX66CQ 72LPX70CQ 72LPX81CQ 72LPX93CQ 60 66 70 81 93 GUIDE BAR (Low-kickback) Replacement guide bars. The following guide bars may be considered to have equivalent kickback energy.
MAINTENANCE AND CARE SKILL LEVELS 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 Idle adjusting screw High speed needle (H) 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. 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 FILTER Cylinder cover Spark plug Air filter Air cleaner cover • Check before every use. • Close choke ( ). • Turn cleaner cover knob counterclockwise by hand and remove air cleaner cover and air filter. • Brush off dust lightly, or clean with compressed air, or replace the air filter. • Reinstall air filter and cover. Cleaner cover knob CHECK FUEL SYSTEM • Check before every use. • After refueling, make sure fuel does not leak from around fuel pipe, fuel grommet or fuel tank cap.
GUIDE BAR • Clean before using. - Clean the groove of the guide bar with a small screwdriver. - Clean oil holes with a wire. • Reverse guide bar periodically. • Check sprocket and the clutch and clean the bar mount area before installation of the bar. Replace either or both if worn. Groove Clutch (Sprocket) Oil hole SPROCKET Worn : 0.5 mm (0.02 in.) • A 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: • Keep the cutters sharp at all times. • Keep 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 • Place the depth gauge tool firmly 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.
TROUBLESHOOTING Problem Engine Cause — hard to start Remedy — does not start Engine cranks Fuel at carburetor Fuel at cylinder No fuel at carburetor • Fuel filter clogged • Clean or replace • Fuel line clogged • Clean • Carburetor • Ask your ECHO dealer No fuel at cylinder • Carburetor • Ask your ECHO dealer Muffler wet with fuel • Fuel mixture is too rich • Open choke • Clean / replace air filter • Adjust carburetor • Ask your ECHO dealer Spark at end of plug wire No spark at end of pl
STORAGE AFTER USE • Inspect 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. • Remove chain and guide bar. • Drain fuel tank, pull starter slowly a few times to drain fuel from carburetor. • Pour a small amount of clean motor oil into spark plug hole, pull starter and crank the engine until piston reaches: TOP DEAD CENTER. • Store in a dry area, free from dust.
TECHNICAL DATA Dimension Mass Engine Fuel MODEL L×W×H Power head, dry Type Displacement Carburetor Magneto Spark plug Starter Power transmission Mixture ratio mm kg mL (cm³) Gasoline Oil Guide bar and saw chain Engine speed Tank capacity Bar and chain Tank capacity Lubrication Idle Clutch engagement Wide open throttle L L r/min Standard features CS-620PW 448 × 317 × 296 (17.6 in. × 12.5 in. × 11.7 in.) 6.4 (14.1 lb.) Without chain and guide bar Air-cooled two-stroke single cylinder 59.8 (3.65 cu.
WARRANTY REGISTRATION SHEET Thank you for choosing ECHO Power Equipment Please go to http://www.echo-usa.com/Warranty/Register-Your-ECHO to register your new product on-line. It’s FAST and EASY! NOTE: your information will never be sold or misused by ECHO, Inc. Registering your purchase enables us to contact you in the unlikely event of a service update or product recall, and verifies your ownership for warranty consideration.
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