Read the instructions carefully and follow the rules for safe operation. Failure to do so could result in serious injury. ECHO, INCORPORATED 400 Oakwood Road, Lake Zurich, Illinois 60047-1564 Phone : 847-540-8400 INSTRUCTION MANUAL WARNING CHAIN SAW CS-680 X750-012 20 1...
4.Cut at high engine speeds. 5.Do not overreach or cut above shoulder height. 6.Follow manufacturer’s sharpening and maintenance instructions for the saw chain. 7.Only use replacement bars and chains specified by the manufacturer or the equivalent. CS-680...
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18.When transporting your chain saw, use the appropriate guide bar scabbard. 19.Spark arrestor mufflers approved to SAE Standard J335 are standard on ECHO chain saws to reduce the possibility of forest fires. Do not operate the chain saw with a loose or defective muffler.
IMPORTANT The enclosed message provides information necessary for the protection of the unit. CIRCLE AND SLASH SYMBOL This symbol means the specific action shown is prohibited. Ignoring these prohibitions can result in serious or fatal injury. CS-680...
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Do not operate this chain saw unless you have extraordinary cutting needs and experience and specialized training for dealing with kickback. ECHO chain saw with significantly reduced kickback potential are available. Part Number X503-009550...
Warranty registration statement PACKING LIST 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. 13 x 19 mmT-wrench, 4 mm Hexagonal Wrench, Small screwdriver ECHO Power Blend X™...
Do not operate this chain saw unless you have extraordinary cutting needs and experience and specialized training for dealing with kickback. ECHO chain saw with significantly reduced kickback potential are available. Part Number X503-009550...
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22. Front handle (for the left hand) - Support handle located at the front of the engine housing. 23. Cylinder cover - The cooling airflow grill. It covers the cylinder, spark plug and silencer. CS-680...
“Z 87” stamped on them. • Wear hearing protection. If this guideline is not followed, hearing loss can occur. ECHO recommends wearing hearing protection at all times. WEAR PROPER CLOTHING • Snug fitting durable clothing should be worn. Pants should have long legs, DO NOT WEAR SHORTS.
Reduced radius required safety standard. belongs on top ECHO chain brakes have been designed and tested to comply with international safety standards as follows. : ANSI Standard B175.1 - 2000 Canada : CSA Standard Z 62.1 CHAIN SAWS ANSI Standard B175.1 - 2000 stipulates that...
Two bolts 5 × 12 mm Guide bar studs Clutch Hole Brake band Unlock chain brake CS-680 PREPARATION FOR USE Saw chain is sharp! Always wear gloves when handling assembly, otherwise serious personal injury may result. GUIDE BAR AND SAW CHAIN...
5. Pull the chain around the bar by hand. Loosen the adjustment if you feel tight spots. 6. When chain is properly tensioned, tighten clutch cover nuts securely - 20 to 23 N·m (175 to 200 in. lb.). 7. Keep chain properly tensioned at all times. CS-680...
• ECHO premium Power Blend X™ Universal 2- Stroke Oil may be mixed at 50 : 1 ratio for application in all ECHO engines sold in the past regardless of ratio specified in those manuals. • Use of unmixed, improperly mixed, or fuel older...
STORAGE - Fuel storage laws vary by locality. Contact your local government for the laws affecting your area. As a precaution, store fuel in an approved, airtight container. Store in a well-ventilated, unoccupied building, away from sparks and flames. CS-680...
• Do not use used or reclaimed oil to avoid various oiler problems. • Use ECHO bar and chain oil. • When ECHO bar and chain oil is not available: Use motor oil, etc. • Use bar and chain oil of the following grades: SAE No.
• Choke may be used if necessary, but after first firing sound, pull throttle trigger to release choke. • After starting the engine, pull front hand guard towards the operator immediately. (Chain brake unlocked position) CAUTION CAUTION CS-680...
If engine does not stop, pull choke control knob Ignition switch out fully to stop engine. STOP Return the unit to your authorized ECHO dealer to check and repair stop switch before starting the engine again. CHECKING CHAIN TENSION • Chain tension should be checked frequently during work and corrected as necessary.
CUTTING INSTRUCTION GENERAL • 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.
5 cm (2 in.) First cut Notch Second cut One-third tree diameter CS-680 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...
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• The chain saw industry and government agencies have attempted to prescribe various safety devices, but the best protection is to avoid kickback. • Comply with the safety precautions as listed in this manual and Safety Manual. CS-680...
When the brake lever trips, the chain should stop. Immediately release the throttle trigger. If the chain does not stop immediately, return the saw to your authorized ECHO dealer for repair. NOTE • For practice, while cutting a small tree, push the lever forward to lock the brake.
• Remove air cleaner cover. Remove plug from warm weather position, and install into cold weather “storage” position. NOTE For operation at normal temperature return the plug to its original place. (5°C, 41°F) It causes over heating of the engine. CS-680...
CHAIN AND GUIDE BAR COMBINATION The following combinations are recommended for model CS-680. Guide Bar Length mm (in.) Double Guard 406 (16) 16D0PD3860 508 (20) 20D0PD3870 610 (24) 24D0PD3881 686 (27) —————— CS-680 ECHO Part No. Symmetrical 16D0PS3860 20D0PS3870 24D0PS3881...
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.
Idle adjusting screw Low speed needle (L) High speed needle (H) CS-680 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”...
• If the filter is dirty, wash it in gasoline or replace • When the inside of the tank gets dirty, rinsing the tank out with gasoline can clean it. (130 to 145 in. lb.). CS-680...
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(Sprocket) Worn : 0.5 mm (0.020 in.) Screen cover Spark arrestor screen Increase Decrease Adjusting knob CS-680 GUIDE BAR Groove • Clean before using. - Clean the groove of the guide bar with a small Oil hole screwdriver. - Clean oil holes with a wire.
• For setting saw chain, round file (5.6 mm dia. 7/32 in.) and flat file are used. • To keep correct position and correct angle, use the file holder (Sure Sharp 10° Top plate Side plate Depth guage ® CS-680...
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Top plate filing angle 60° Top plate cutting angle Depth gauge CS-680 • 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.
Flywheel magneto: CDI system NGK BPM7A Recoil starter Automatic centrifugal clutch 50 : 1 ratio with ECHO Power Blend X™, ISO-L- EGD (ISO/CD 13738) and JASO M345-FC/FD two- stroke, air-cooled engine oil. Use 89 octane unleaded. Do not use fuel containing methyl alcohol, more than 10 % ethyl alcohol or 15 % MTBE.