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INSTRUCTION MANUAL
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
CHAIN SAW
CS-520
WARNING
Printed in Japan 0608Fd 0805 ES
X750-005 99 5
X750 319-490 5
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Table of Contents
Related Manuals for Echo CS-520
Summary of Contents for Echo CS-520
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Page 1: Instruction Manual
INSTRUCTION MANUAL CHAIN SAW CS-520 WARNING Read the instructions carefully and follow the rules for safe operation. Failure to do so could result in serious injury. ECHO, INCORPORATED X750-005 99 5 400 Oakwood Road, Lake Zurich, Illinois 60047-1564 X750 319-490 5... - Page 2 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 © 2003 All Rights Reserved.
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Page 3: Rules For Safe Operation
3.Make sure that the area in which you the guide bar when you purchase your are cutting is free from obstructions. ECHO chain saw. Do not let the nose of the guide bar ® The Kick Guard... - Page 4 SAE Standard J 335 are standard on to the rear, and the muffler away from ECHO chain saws to reduce the your body. possibility of forest fires. Do not operate the chain saw with a 10.Do not operate a chain saw that is...
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Page 5: Table Of Contents
The enclosed message provides information necessary for the protection of the unit. CAUTION The safety alert symbol accompanied by the word “CAUTION” calls attention to an act or condition which may lead to minor or moderate personal injury if not avoided. CS-520... - Page 6 PARTS” section will help you locate them. Make sure the decal is legible and that you understand and follow the instructions on it. If a decal cannot be read, a new one can be ordered from your ECHO dealer. CS-520...
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Page 7: Packing List
The ECHO product you purchased has been After opening the carton, check for damage. factory pre-assembled for your convenience. Due to Immediately notify your retailer or ECHO dealer of packaging restrictions, guide bar and saw chain damaged or missing parts. Use the packing list to installation and other assembly may be necessary. -
Page 8: Nomenclature Of Parts
El freno de la cadena debe ser bloqueado antes de remover o de instalar la cubierta del embrague. La instalación incorrecta de la cubierta ordered from your ECHO dealer. puede dar lugar a lesión seria y causar daño severo a la sierra. - Page 9 10. Chain tension adjuster - Device to adjust can be activated in order to prevent the chain tension. accidental operation of the throttle trigger. 22. Ignition switch - Device for connecting and disconnecting the ignition system and thus allowing the engine to be started or stopped. CS-520...
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Page 10: Operator Safety
If this guideline is not followed, hearing loss can numbness in the fingers. occur. The following precautions are strongly ECHO recommends wearing hearing protection recommended because the minimum exposure at all times. which might trigger the ailment is unknown. WEAR PROPER CLOTHING •... -
Page 11: Correct Use Of Chain Brake
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 Safety Requirement for chain saws Canada : CSA Standard Z 62.1 CHAIN SAWS... -
Page 12: Preparation For Use
“Maintenance and Care” section for guide bar/ saw chain maintenance procedures. 4. For initial setup, install the spiked bumper on the front of machine with two 5 × 12 mm bolts. Two bolts 5 × 12 mm Guide bar studs CS-520... -
Page 13: Adjusting Chain Tension
Proper tension Improper tension 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-520... -
Page 14: Fuel And Lubricant
Stroke Oil may be mixed at 50 : 1 ratio for standards. Engine problems due to inadequate application in all ECHO engines sold in the past lubrication caused by failure to use an ISO-L-EGD regardless of ratio specified in those manuals. -
Page 15: Operation
• 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:... -
Page 16: When The Engine Is Cold
Throttle trigger • Choke may be used if necessary, but after first firing sound, pull throttle trigger to release choke. Unlock chain brake • After starting the engine, pull front hand guard towards the operator immediately. (Chain brake unlocked position) CS-520... -
Page 17: Checking Chain Tension
NOTE If engine does not stop, pull choke control knob STOP out fully to stop engine. Return the unit to your authorized ECHO dealer to check and repair stop switch before starting the engine again. Throttle trigger CHECKING CHAIN TENSION •... -
Page 18: Cutting Instruction
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. -
Page 19: Felling The Tree
Then remove the saw for the second cut. Insert the saw in the first cut, very carefully so as not to cause kickback. The final cut is made by drawing the saw forward in the cut to reach the hinge. CS-520... - Page 20 • 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-520...
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Page 21: Chain Brake Operation
When the brake lever trips, the chain should stop. Immediately release the throttle trigger. WARNING If the chain does not stop immediately, return the saw to your authorized ECHO dealer for repair. Chain brake function When the lever is pushed forward, chain brake NOTE instantly stops the chain. -
Page 22: Automatic Chain Brake
Tighten two screws to fasten the snow protector. NOTE Snow protector Two screws For operation at normal temperature return the (Optional) plug to its original place and remove the snow protector. (5°C, 41°F) It causes over heating of the engine. CS-520... -
Page 23: Chain And Guide Bar Combination
CHAIN AND GUIDE BAR COMBINATION The following combinations are recommended for model CS-520. Guide Bar Saw chain Length ECHO Part No. Pitch Type Links mm (in) Double Guard mm (in) (OREGON) 406 (16) 16A0AD3366 8.26 (0.325) 33SL 16A0MD3366 8.26 (0.325) -
Page 24: Maintenance And Care
MAINTENANCE AND CARE Your ECHO chain saw is designed to provide many SKILL LEVELS hours of trouble free service. Regular scheduled Level 1 = Easy to do. Most required tools come maintenance will help your chain saw achieve that with unit. -
Page 25: Carburetor Adjustment
Correct idle speed is adjusted 2,900 to 3,100 r/min. Or 1/4 turn CCW from the point the chain stops moving. When you experience trouble with the carburetor, contact your dealer. CS-520... -
Page 26: Check Fuel System
• Pull it out through oil filling hole with a piece of steel wire or the like. • 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. CS-520... -
Page 27: Automatic Oiler
When the screw touches stopper and stops, this position indicates maximum discharge volume. (13 to 14 mL/min at 7,000 r/min) - Do not turn the adjusting screw beyond the maximum or minimum limit of volume adjustment. CS-520... -
Page 28: Setting The Saw Chain
• To keep correct position and correct angle, Keep this angle ® use the file holder (Sure Sharp 33SL :4.0 mm dia. 5/32 in. 95VP :4.8 mm dia. 3/16 in. Push file as shown 10° Hold the file tipped 10° upward CS-520... - Page 29 0.64 mm (0.025 in.) 60° NOTE These angles are referred to as Oregon 33SL or 95VP. To sharpen other follow chain manufacturer’s instruction. Parallel Top plate cutting angle Depth gauge CS-520...
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Page 30: Troubleshooting
• Fuel filter clogged • Clean or replace cranks carburetor at carburetor • Fuel line clogged • Clean • Carburetor • Ask your ECHO dealer Fuel at No fuel at • Carburetor • Ask your ECHO dealer cylinder cylinder Muffler wet •... -
Page 31: Storage After Use
Power transmission Automatic centrifugal clutch Fuel Mixture ratio 50 : 1 ratio with ECHO Power Blend™ two-stroke, air-cooled engine oil. 89 octane unleaded. Do not use fuel containing methyl alcohol, more than 10 % ethyl alcohol or 15 % MTBE.