Echo CS-310 Operator's Manual
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CHAIN SAW
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.
This product complies with CAN ICES-2/NMB-2.
X7503275401
© 02/2019 ECHO Inc.
Operator's
Manual
CS-310

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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. This product complies with CAN ICES-2/NMB-2. X7503275401 © 02/2019 ECHO Inc.
  • Page 2: Table Of Contents

    TABLE OF CONTENTS Introduction ....................4 Servicing Information .................. 5 Parts/Serial Number................5 Service ....................5 ECHO Consumer Product Support ............5 Product Registration ................5 Additional Literature ................5 Packing List....................6 Safety ......................6 Rules For Safe Operation ..............6 Correct Use Of Chain Brake ..............
  • Page 3 Spark Arrestor Screen ............... 48 Exhaust Port Cleaning............... 48 Setting The Saw Chain..............49 Troubleshooting ..................52 Storage ..................... 54 Long Term Storage (Over 30 Days) ..........54 Specifications ................... 55 Product Registration ................. 56 Notes......................58 X7503275401 © 02/2019 ECHO Inc.
  • Page 4: Introduction

    Scan QR codes for more information. For additional literature, including safety manuals where applicable, or questions regarding terms used in this manual, visit: https://www.echo-usa.com/manuals https://www.shindaiwa-usa.com/manuals X7503275401 © 02/2019 ECHO Inc.
  • Page 5: Servicing Information

    Register your ECHO equipment on-line 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 6: Packing List

    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 7 Tip contact may cause the guide bar to move suddenly upward and backward which may cause serious injury. Always use two hands when operating the chain saw. Use a firm grip, thumbs and fingers encircling the handles. Don’t overreach. X7503275401 © 02/2019 ECHO Inc.
  • Page 8: 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 engine with the brake locked. X7503275401 © 02/2019 ECHO Inc.
  • Page 9 This chain brake has been designed and tested to comply with international safety standards as follows. Canada: CSA Standard Z62.1, Z62.3 USA: ANSI Standard B175.1 Safety Requirement for chain saws X7503275401 © 02/2019 ECHO Inc.
  • Page 10 Chain saws shall be used in accordance with the operating instructions and safety precautions listed in the operator's manual(s). It shall be the responsibility of the owner to see that such instructions and precautions are given to every operator who uses the saw. X7503275401 © 02/2019 ECHO Inc.
  • Page 11 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. X7503275401 © 02/2019 ECHO Inc.
  • Page 12: 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 may be worn over ◆ safety glasses or goggles to provide protection from sharp branches or flying debris. X7503275401 © 02/2019 ECHO Inc.
  • Page 13 Hearing/Ear Protection ECHO recommends wearing personal protection 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 14 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 15 All over head electrical conductors and communications wires can have electricity flow with high voltages. This unit is not insulated against electrical current. Never touch wires directly or indirectly, otherwise serious injury or death may result. X7503275401 © 02/2019 ECHO Inc.
  • Page 16: International Symbols

    Contact of the guide bar tip with any object Emergency Stop should be avoided Both of the operator’s hands must be used to Fuel and Oil Mixture operate the chain saw Hot Surface Chain Oil Fill X7503275401 © 02/2019 ECHO Inc.
  • Page 17 CS-310 SAFETY Symbol Description Symbol Description Chain Oiler Chain Brake Operation Adjustment Choke Control “COLD START” Position Purge Pump (Choke Closed) Measured maximum kickback value, without brake, for approved bar and chain combinations. X7503275401 © 02/2019 ECHO Inc.
  • Page 18: Manual Safety Symbols And Important Information

    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. X7503275401 © 02/2019 ECHO Inc.
  • 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. X7503275401 © 02/2019 ECHO Inc.
  • Page 20: Description

    Locate the safety decal(s) on your unit. Make sure the decal(s) 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. Safety label is for example only. Your label my 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. X7503275401 © 02/2019 ECHO Inc.
  • Page 22: Preparation For Use

    IMPORTANT: Dimple (D) in tip guard must engage recess (E) in guide bar. Securely tighten nut (F) and bolt (A). Guide Bar and Saw Chain Installation/Removal Release the cylinder cover latches, and remove the cylinder cover. Remove spark plug lead. X7503275401 © 02/2019 ECHO Inc.
  • Page 23 Install the sprocket guard over the guide bar studs. Ensure chain tension adjuster pin (F) fits into the guide bar adjuster hole (D). Tighten sprocket guard nuts finger tight. Adjust saw chain tension, as instructed in “Adjustment, Chain Tension”. X7503275401 © 02/2019 ECHO Inc.
  • Page 24 (A) clockwise until chain contacts underside of the bar. Tighten nuts with the bar nose held up. Pull the chain around the bar by hand. Loosen the adjustment if you feel tight spots. X7503275401 © 02/2019 ECHO Inc.
  • Page 25: Operation

    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. ECHO branded 2-stroke oils meet these standards. Engine problems due to inadequate lubrication caused by failure to use an ISO-L- EGD (ISO/CD 13738) and J.A.S.O.
  • Page 26 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 may result.
  • Page 27 Store in a well-ventilated, unoccupied building, away from sparks and flames. Stored fuel ages. Do not mix more fuel than you expect to use in 30 days, 90 days when a fuel stabilizer is added. X7503275401 © 02/2019 ECHO Inc.
  • Page 28: Chain Lubricant

    Keep hands, clothing and loose objects away from all openings. Always stop engine, disconnect spark plug, and make sure all moving parts have come to a complete stop before removing obstructions, clearing debris, or servicing unit. X7503275401 © 02/2019 ECHO Inc.
  • Page 29: Winter Operation

    (5°C [41°F]) return the plug to its original position. To prevent over heating of the engine. Starting Cold Engine Make sure the bar and chain are free from any obstruction when starting the chain saw. X7503275401 © 02/2019 ECHO Inc.
  • Page 30 The chain will attempt to move when engine is started with ◆ fast idle throttle latch engaged. Do not start engine before chain brake is locked. ◆ Securely hold the chain saw and pull starter handle several times until first starting sound. X7503275401 © 02/2019 ECHO Inc.
  • Page 31: Starting Warm Engine

    Note: Do not increase engine speed while chain brake is locked. Severe brake damage will result. Starting Warm Engine Make sure the bar and chain are free from any obstruction when starting the chain saw. X7503275401 © 02/2019 ECHO Inc.
  • Page 32 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. X7503275401 © 02/2019 ECHO Inc.
  • Page 33: Running

    (see technical data 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. X7503275401 © 02/2019 ECHO Inc.
  • Page 34: 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. X7503275401 © 02/2019 ECHO Inc.
  • Page 35: 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. X7503275401 © 02/2019 ECHO Inc.
  • Page 36 5 seconds or engine damage may occur. Keep chain properly tensioned during operation to prevent ◆ the chain from jumping out of the guide bar rail slot and damaging metal engine parts. X7503275401 © 02/2019 ECHO Inc.
  • Page 37 5 cm (2 in.) will act as a 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. X7503275401 © 02/2019 ECHO Inc.
  • Page 38 • Keep both hands on the handles at Finish cut all times. • Support logs if possible. First cut • When cutting on a slope or hillside, Support always stand uphill. X7503275401 © 02/2019 ECHO Inc.
  • Page 39: Chain And Guide Bar 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. Chain And Guide Bar Combination The following combinations are recommended for model CS-310. Guide Bar Saw Chain ECHO Part No.
  • Page 40: Guide Bar

    OPERATION CS-310 If your tip guard is damaged or lost, contact your Echo dealer for a replacement. For the name of the Echo dealer nearest you, Call: 1- 800-432-ECHO (3246) or on the web at www.echo-usa.com. Guide Bar (Low-kickback) Replacement guide bars.
  • Page 41: 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 For information about maintenance kits.
  • Page 42: Maintenance Intervals

    IMPORTANT NOTE - Time intervals shown are maximum. Actual use and your experience will determine the frequency of required maintenance. MAINTENANCE PROCEDURE NOTES: 1 Low evaporative fuel tanks DO NOT require regular maintenance to maintain emission integrity. X7503275401 © 02/2019 ECHO Inc.
  • Page 43: Carburetor Adjustment

    • Start engine, turn “Idle” speed adjustment screw “T” CW until the saw chain begins to move, then turn screw out CCW until the saw chain stops moving. Turn screw out, CCW, an additional 1/4 turn. X7503275401 © 02/2019 ECHO Inc.
  • Page 44: Air Filter

    (C) and remove cylinder cover (A) and air filter (B). Lightly brush dust off air filter, or clean with compressed air, or replace the air filter. Install air filter and cylinder cover, engage latches. X7503275401 © 02/2019 ECHO Inc.
  • Page 45: Spark Plug

    When the filter is dirty, replace it. Do not damage fuel line while removing fuel filter from tank. When the inside of the fuel tank is dirty, rinse the tank out with gasoline to clean it. X7503275401 © 02/2019 ECHO Inc.
  • Page 46: Oil Filter

    Worn: 0.5 mm (0.020 in.) premature damage or wear of saw chain. • When the sprocket has worn 0.5 mm (0.020 in.) or more, replace it. • Check sprocket when you install new chain. Replace it if worn. X7503275401 © 02/2019 ECHO Inc.
  • Page 47: 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. X7503275401 © 02/2019 ECHO Inc.
  • Page 48: Spark Arrestor 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. X7503275401 © 02/2019 ECHO Inc.
  • Page 49: 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. X7503275401 © 02/2019 ECHO Inc.
  • Page 50 • One fifth of the file diameter remains above cutter edge. • Be sure to round off the front edge Depth gauge tool of the depth gauge. X7503275401 © 02/2019 ECHO Inc.
  • Page 51 • If the saw chain becomes soiled with resin, for instance, clean it with Parallel kerosene and soak in it oil. Depth gauge To sharpen other chains, follow chain manufacturer’s instructions. X7503275401 © 02/2019 ECHO Inc.
  • Page 52: Troubleshooting

    See your dealer problem - wire Interlock switch No spark Incorrect gap - Adjust to 0.65mm Covered with (0.026 in.) Spark at carbon - Fouled plug Clean or replace with fuel - Plug plug defective X7503275401 © 02/2019 ECHO Inc.
  • Page 53 Cooling system operation in dirty Clean properly system dirty or or dusty plugged locations Spark Spark arrestor arrestor Normal wear Replace screen screen plugged Engine Internal engine does not See your dealer problem crank X7503275401 © 02/2019 ECHO Inc.
  • Page 54: Storage

    Observe the piston location through the spark plug hole. Pull the recoil handle slowly until the piston reaches the top of its travel and leave it there. 10. Install the spark plug. Connect the spark plug lead to the spark plug. X7503275401 © 02/2019 ECHO Inc.
  • Page 55: Specifications

    Saw chain 91PX/91VG Standard features Front hand guard, Rear hand guard, Anti- vibration device, Throttle control lockout, Chain catcher, Spark arrestor muffler, Tip guard, (Spiked bumper; Option) * Technical data subject to change without notice. X7503275401 © 02/2019 ECHO Inc.
  • Page 56: 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, 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.
  • Page 57 CS-310 PRODUCT REGISTRATION X7503275401 © 02/2019 ECHO Inc.
  • Page 58: Notes

    NOTES CS-310 NOTES X7503275401 © 02/2019 ECHO Inc.
  • Page 59 CS-310 NOTES X7503275401 © 02/2019 ECHO Inc.
  • Page 60 C67815001001 - C67815999999 C67915001001 - C67915999999 ECHO INCORPORATED 400 Oakwood Road Lake Zurich, IL 60047 www.echo-usa.com...

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