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Echo CS-310 Operator's Manual

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The engine exhaust from this product contains chemicals
known to the State of California to cause cancer, birth defects,
or other reproductive harm.
Read and understand all provided literature before
use. Failure to do so could result in serious injury.
Note: This product complies with CAN ICES-2/NMB-2.
X7533271300
© 11/23 ECHO Incorporated
Operator's
Manual
CS-310
Chainsaw

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Summary of Contents for Echo CS-310

  • Page 1 State of California to cause cancer, birth defects, or other reproductive harm. Read and understand all provided literature before use. Failure to do so could result in serious injury. Note: This product complies with CAN ICES-2/NMB-2. X7533271300 © 11/23 ECHO Incorporated...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Introduction......................... 3 Servicing Information....................3 Parts and Serial Number..................3 Service ....................... 4 ECHO Consumer Product Support ..............4 Product Registration................... 4 Additional Literature ................... 4 Safety ......................... 5 Manual Safety Symbols and Important Information ........... 5 International Symbols..................

  • Page 3: Introduction

    SERVICING INFORMATION Parts and Serial Number Genuine ECHO parts and assemblies for your ECHO products are available only from an Authorized ECHO Dealer. When you do need to buy parts, always have the model number and serial number of the unit with you. For future reference write them in the space provided below.

  • Page 4: Service

    Register your ECHO equipment online at www.echo-usa.com or by filling out the product registration sheet included in this manual. Registering your product confirms warranty coverage and provides a direct link to ECHO if we find it necessary to contact you.

  • Page 5: Safety

    Note: This enclosed message provides tips for use, care and maintenance 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. X7533271300 © 11/23 ECHO Incorporated...

  • Page 6: International Symbols

    Both of the operator’s hands Fuel and Oil must be used to Mixture operate the chainsaw. Hot Surface Chain Oil Fill X7533271300 © 11/23 ECHO Incorporated...
  • Page 7 Chain Oiler Operation Adjustment Choke Control “COLD START” Position (Choke Closed) Purge Bulb Choke Control “RUN” Position (Choke Open) STOP / Decompression Momentary Device STOP Switch Note: Not all symbols will appear on your unit. X7533271300 © 11/23 ECHO Incorporated...

  • Page 8: Personal Condition And Safety Equipment

    Eye protection that meets ANSI Z87.1 or CE requirements ◆ must be worn whenever you operate the unit. For additional safety, a full-face shield can be worn over ◆ safety glasses or goggles to provide protection from sharp branches or flying debris. X7533271300 © 11/23 ECHO Incorporated...
  • Page 9 Gloves also provide protection against cuts and scratches, cold environments, and reduce the transmission of machine vibration to your hands. Hearing and Ear Protection ECHO recommends wearing personal protective equipment whenever unit is used. Breathing Protection Operators who are sensitive to dust or other common airborne allergens may need to wear a dust mask to prevent inhaling these materials while operating unit.
  • Page 10 To reduce the risk of serious or fatal injury, persons with pacemakers should consult with their physician and the pacemaker manufacturer before operating this machine. In the absence of such information, ECHO does not recommend the use of this machine by anyone who has a pacemaker.
  • Page 11 Never touch wires directly or indirectly, otherwise serious injury or death can result. Do not operate this product indoors or in inadequately ventilated areas. Engine exhaust contains poisonous emissions and can cause serious injury or death. X7533271300 © 11/23 ECHO Incorporated...

  • Page 12: Rules For Safe Operation

    With a basic understanding of kickback, you can reduce or eliminate the element of Kickback Danger Zone surprise. Sudden surprise contributes to accidents. X7533271300 © 11/23 ECHO Incorporated...

  • Page 13: Correct Use Of Chain Brake

    • 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 Locked engine with the brake locked. X7533271300 © 11/23 ECHO Incorporated...
  • Page 14 Chain brakes have been designed and tested to comply with international safety standards as follows: USA: ANSI Standard B175.1 Safety Requirement for chainsaws Canada: CSA Standard Z62.1, Z62.3 X7533271300 © 11/23 ECHO Incorporated...
  • Page 15 The impact should lock the chain brake. When checking the operation of the automatic chain brake, use a soft surface substance like wood to absorb the impact so the chain is not damaged. X7533271300 © 11/23 ECHO Incorporated...
  • Page 16 14. Keep the handles dry, clean, and free of oil or fuel mixture. 15. Operate the chainsaw only in well ventilated areas. 16. Do not operate a chainsaw in a tree unless you have been specifically trained to do so. X7533271300 © 11/23 ECHO Incorporated...
  • Page 17 Always use the saw from the right-hand side of your body –  NEVER from the left side. Always wear proper safety clothing to protect your lower  body from sharp saw chain and hot muffler. X7533271300 © 11/23 ECHO Incorporated...
  • Page 18 If damage or leaks are found, do not use unit, otherwise serious personal injury or property damage may occur. Have unit repaired by an authorized servicing dealer before using. X7533271300 © 11/23 ECHO Incorporated...

  • Page 19: Emission Control (Exhaust & Evaporative)

    The 50 or 300 hour 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. X7533271300 © 11/23 ECHO Incorporated...

  • Page 20: Description

    Locate the safety decal(s) or etching(s) on your unit. Make sure they are legible, and that you understand and follow the instructions. If any cannot be read, replacements can be ordered from your ECHO dealer. Images shown below are for example only. Those on your unit might appear slightly different.
  • Page 21 CHAIN BRAKE - Stops the saw chain. DRIVE SPROCKET - Drives saw chain. CLUTCH - Turns drive sprocket when engine rpm is fast enough to provide the power needed for cutting. X7533271300 © 11/23 ECHO Incorporated...

  • Page 22: Contents

    Due to packaging restrictions, some 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 contents list to check for missing parts. Power Head...
  • Page 23 Release the cylinder cover latches, and remove the cylinder cover. Remove spark plug lead. Remove sprocket guard nuts Unlock chain brake (A) and remove sprocket guard (B). Remove guide bar and saw chain if necessary. X7533271300 © 11/23 ECHO Incorporated...
  • Page 24 Release the cylinder cover Unlock chain brake latches, and remove the cylinder cover. Remove spark plug lead. Unlock chain brake and loosen sprocket guard nuts. X7533271300 © 11/23 ECHO Incorporated...
  • Page 25 Tighten guide bar nuts to 20-23 N•m (175-200 lbf•in.). DO NOT over- tighten nuts. Damage to saw may result. Assemble components in reverse order. Keep chain properly tensioned at all times. Note: All chains require frequent adjustments. X7533271300 © 11/23 ECHO Incorporated...

  • Page 26: Operation

    NOT approved. Use of ECHO branded fuel is recommended to extend engine life in all air-cooled 2-stroke and 2/4-stroke hybrid engines. Two Stroke Oil - A two-stroke engine oil, such as ECHO branded 2-stroke oils, meeting ISO-L-EGD (ISO/CD 13738) and J.A.S.O. FD Standards must be used.
  • Page 27 AVOID inhaling oil mists or vapors. ◆ ECHO branded 2-stroke oils may be mixed at 50:1 ratio for application in all ECHO engines sold in the past regardless of ratio specified in those manuals. Handling Fuel Fuel is VERY flammable. Use extreme care when mixing, storing or handling, or serious personal injury will result.
  • Page 28 • Empty the fuel tank prior to storing the unit. Return unused fuel to an approved fuel storage container. Stored two-stroke fuel can separate. ALWAYS shake fuel container thoroughly before each use. X7533271300 © 11/23 ECHO Incorporated...

  • Page 29: Chain Lubricant

    Engine exhaust IS HOT, and contains Carbon Monoxide (CO), a poison gas. Breathing CO can cause unconsciousness, serious injury, or death. Exhaust can cause serious burns. ALWAYS position unit so that exhaust is directed away from your face and body. X7533271300 © 11/23 ECHO Incorporated...

  • Page 30: Winter Operation

    Move chain brake lever fully Chain brake FORWARD to LOCK chain brake before starting. Fill the fuel tank with fuel mixture. Do not over fill. Fill the chain oil tank with lubricant. Do not over fill. X7533271300 © 11/23 ECHO Incorporated...
  • Page 31 Do not start engine before chain brake is locked. ◆ Securely hold the chainsaw and pull starter handle several times until first starting sound. Push choke control knob all the way IN (OPEN choke position). X7533271300 © 11/23 ECHO Incorporated...

  • Page 32: Starting Warm Engine

    Make sure the bar and chain are free from any obstruction when starting the chainsaw. Move chain brake lever fully Chain brake FORWARD to LOCK chain brake before starting. Confirm there is fuel and chain oil in the tanks. X7533271300 © 11/23 ECHO Incorporated...
  • Page 33 Note: If engine does not start after 5 pulls, use cold start procedure. Note: Do not increase engine speed while chain brake is locked. Severe brake damage will result. X7533271300 © 11/23 ECHO Incorporated...

  • Page 34: Running

    (see the Specifications page). 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. X7533271300 © 11/23 ECHO Incorporated...

  • Page 35: Stopping

    Do not operate with a loose chain. Chain Lubrication Test Hold the chain just above a dry surface and open the throttle to half speed for 30 seconds. A thin line of “thrown” oil should be seen on the dry surface. X7533271300 © 11/23 ECHO Incorporated...

  • Page 36: Cutting Instructions

    Before attempting to fell a tree, cut some small logs or limbs. Become thoroughly familiar with the controls and the responses of the saw. X7533271300 © 11/23 ECHO Incorporated...
  • Page 37 Keep chain properly tensioned during operation to prevent ◆ the chain from jumping out of the guide bar rail slot and damaging metal engine parts. X7533271300 © 11/23 ECHO Incorporated...
  • Page 38 5 cm (2 in.) will act as a One-third tree diameter hinge when the tree falls, guiding it in the desired direction. When the tree starts to fall, kill the engine, place the saw on the ground and make your retreat quickly. X7533271300 © 11/23 ECHO Incorporated...
  • Page 39 Always use both hands. Don’t cut with the saw overhead or aligned vertically with your body. If the saw should kick back, you may not have enough control to prevent possible injury. X7533271300 © 11/23 ECHO Incorporated...

  • Page 40: Guide Bar And Chain Combination

    To cut the trunk, use the bucking and two-cut sequence shown. The first cut should be no deeper than one-third the trunk diameter. Guide Bar and Chain Combination The following combinations are recommended for model CS-310. Guide Bar Saw Chain ECHO Part No.

  • Page 41: Kick Guard Tm

    To purchase an optional Kick Guard contact your dealer. For the name of the ECHO dealer nearest you, call 1-800-432-ECHO (3246) or on the web at www.echo-usa.com. For the name of the Shindaiwa dealer nearest you, call 1-877-986-7783 or on the web at www.shindaiwa-usa.com.

  • Page 42: Maintenance

    Level 1 = Easy to do. Common tools may be required. Level 2 = Moderate difficulty. Some specialized tools may be required. Level 3 = See your dealer. Click HERE or go to http://www.echo-usa.com/products/maintenance-kit HERE https://www.shindaiwa-usa.com/you-can.aspx X7533271300 © 11/23 ECHO Incorporated...

  • Page 43: Maintenance Intervals

    Air Filter Replace * Oil Filter Inspect / Replace * Fuel Filter Inspect * Fuel Cap Gasket Inspect * Spark Plug Inspect / Clean / Replace * Muffler Spark Arrester Inspect / Clean / Replace * X7533271300 © 11/23 ECHO Incorporated...

  • Page 44: Carburetor Adjustment

    335 m (1,100 ft.) above sea level (ASL) (96.0 kPa). To maintain proper engine operation above 335 m (1,100 ft.) ASL the carburetor might need to be adjusted by an authorized service dealer. X7533271300 © 11/23 ECHO Incorporated...
  • Page 45 When starting, idling adjustment speed should be adjusted to prevent the saw chain from moving. When you experience trouble with the carburetor, contact your dealer. X7533271300 © 11/23 ECHO Incorporated...

  • Page 46: Air Filter

    • After refueling, make sure fuel does not leak from around fuel pipe, fuel grommet or fuel tank cap. • In case of fuel leakage there is a danger of fire. Stop using the machine immediately and request your dealer to inspect or replace. X7533271300 © 11/23 ECHO Incorporated...

  • Page 47: Fuel Filter

    • A clogged oil filter (B) will affect the normal lubricating system. Pull Oil Filter out through oil port, and inspect Oil Filter. If the Oil Filter (a) is dirty, wash it in gasoline or replace it as follows: X7533271300 © 11/23 ECHO Incorporated...

  • Page 48: Guide Bar

    • Check sprocket when you install new chain. Replace it if worn. Some tree sap and resins are corrosive. Thoroughly wash the guide bar and sprocket areas after each use, then coat metal parts with light oil. X7533271300 © 11/23 ECHO Incorporated...

  • Page 49: Cooling System Cleaning

    USDA Forest Service Regulation SAE J335. Check with your local or state authorities for specific regulations in your area. Failure to follow these requirements is a violation of the law. X7533271300 © 11/23 ECHO Incorporated...

  • Page 50: Spark Arrester Screen

    Never use a metal tool to scrape carbon from the exhaust port. Do not scratch the cylinder or piston when cleaning the exhaust port. Do not allow carbon particles to enter the cylinder. X7533271300 © 11/23 ECHO Incorporated...

  • Page 51: Setting The 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. X7533271300 © 11/23 ECHO Incorporated...
  • Page 52 • Place depth gauge tool firmly on Depth Gauge Tool 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. X7533271300 © 11/23 ECHO Incorporated...
  • Page 53 • If the saw chain becomes soiled with resin, for instance, Parallel depth gauge clean it with kerosene and soak in it oil. To sharpen other chains, follow chain manufacturer’s instructions. X7533271300 © 11/23 ECHO Incorporated...

  • Page 54: Troubleshooting

    Clean or replace runs, but dirty dies Contaminants Fuel filter Replace filter or Fuel filter or residue in dirty replace fuel fuel Engine does not Fuel vent Contaminated accelerat Fuel vent Clean or replace plugged fuel properly X7533271300 © 11/23 ECHO Incorporated...

  • Page 55: Storage

    Serious personal injury can result. • Inspect and adjust every part of the chainsaw. • Completely clean every part and repair if necessary. • Apply thin coating of oil on metal parts to prevent rust. X7533271300 © 11/23 ECHO Incorporated...

  • Page 56: Specifications

    Do not lend or rent your chainsaw without the Operator’s Manual. Note: • For future reference, you should keep this Operator’s Manual. • If this Operator’s Manual becomes illegible or is lost, please contact your dealer, or go to www.echo-usa.com. SPECIFICATIONS Model CS-310 Length 396 mm (15.6 in.)
  • Page 57 Wide open throttle speed 12,500 RPM Chain tensioner Side access system Guide bar 12, 14, 16 in. Saw chain 91PX/91VG Front hand guard, Rear hand guard, Anti- Standard features vibration device, Throttle control lockout, Chain catcher, Spark arrester muffler X7533271300 © 11/23 ECHO Incorporated...

  • Page 58: Product Registration

    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, Incorporated. 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.
  • Page 59 CS-310 PRODUCT REGISTRATION X7533271300 © 11/23 ECHO Incorporated...
  • Page 60 C95413001001 - C95413999999 ECHO INCORPORATED 400 Oakwood Road Lake Zurich, IL 60047 www.echo-usa.com...

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