Use and Care Manual

ManualsBrandsECHO ManualsChainsaws30.5 cc Chainsaw with 16 in. Bar and Chain

Table Of Contents

X7503275300

Instruction Manual

Specifications, descriptions and illustrative material in this literature are

as accurate as known at the time of publication, but are subject to

change without notice. Illustrations may include optional equipment and

accessories, and may not include all standard equipment.

x7722271404 / x772000164

CS-310

CHAIN SAW

Burn Hazard

The muffler or catalytic muffler and surrounding cover may

become extremely hot. Always keep clear of exhaust and

muffler area, otherwise serious personal injury may occur.

The engine exhaust from this product contains chemicals

known to the State of California to cause cancer, birth defects,

or other reproductive harm.

Users of this equipment risk injury to themselves and others

if the unit is used improperly and/or safety precautions are

not followed. Echo provides and operator’s manual and a

safety manual. Both must be read and understood for proper

and safe operation. Failure to do so could result in serious injury.

Summary of content (60 pages)

PAGE 1
x7722271404 / x772000164 CS-310 CHAIN SAW Instruction Manual Burn Hazard The muffler or catalytic muffler and surrounding cover may become extremely hot. Always keep clear of exhaust and muffler area, otherwise serious personal injury may occur. The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
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TABLE OF CONTENTS CS-310 TABLE OF CONTENTS Table of Contents ........................................................................................ 2 Packing List ................................................................................................. 4 Safety .......................................................................................................... 5 Rules For Safe Operation .................................................................... 5 Correct Use Of Chain Brake ......
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CS-310 TABLE OF CONTENTS Troubleshooting ........................................................................................ Storage ..................................................................................................... Storage After Use .............................................................................. Specifications ........................................................................................... Product Registration .............................................
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PACKING LIST CS-310 PACKING LIST The ECHO product you purchased has been factory pre-assembled for your convenience. 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.
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CS-310 SAFETY SAFETY Rules For Safe Operation Kickback Safety Precautions for Chain Saw Users 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. Tip contact in some cases may cause a lightning fast reverse REACTION, Kicking the guide bar up and back towards the operator. Pinching the saw chain along the top of the guide bar may push the guide bar rapidly back towards the operator.
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SAFETY 1. CS-310 With a basic understanding of kickback, you can reduce or eliminate the element of surprise. Sudden surprise contributes to accidents. Kickback Danger Zone 2. Keep a good firm grip on the saw with both hands, the right hand on the rear handle, and the left hand on the front handle, when the engine is running. Use a firm grip with thumbs and fingers encircling the chain saw handles. A firm grip will help you reduce kickback and maintain control of the saw. Don’t let go. 3.
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CS-310 Testing The Brake SAFETY Unlocked • Start the engine on a solid level surface and run at a fast idle until warm. • Hold the saw firmly by the handles and accelerate the engine to a fast idle. • Slowly operate the chain brake lever while holding the saw firmly on the ground. When the brake lever trips, the chain should stop. Immediately release the throttle trigger. Do not allow the saw to tip forward in order to avoid damage to the chain.
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SAFETY CS-310 ANSI Standard B175.1 stipulates that the brake shall stop the chain 0.12 seconds at an engine speed of 13,500 r/min. It is the responsibility of the owner/operator to ensure that the brake is serviced, adjusted and tested strictly in accordance with the instructions as detailed here in order to ensure that the brake performance is maintained in compliance with the Standard B175.1. Automatic Chain Brake Kickback produced from the tip of the guide bar will trip the automatic chain brake.
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CS-310 SAFETY 3. Use safety footwear, snug-fitting clothing and protective gloves. Wear eye, hearing, and head protection devices. 4. Use caution when handling fuel. Move the chain saw at least 3 m (10 feet) from the fueling point before starting the engine. 5. Do not allow other persons to be near the chain saw when starting or cutting with the chain saw. Keep bystanders and animals out of the work area. 6.
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SAFETY CS-310 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. ◆ ◆ ◆ ◆ ◆ During operation, the muffler or catalytic muffler and surrounding cover become hot. Never suspend the saw on a lanyard with the engine running.
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CS-310 SAFETY Periodically Check fuel system (fuel lines, vent, grommet, fuel tank, and fuel cap) for leaks especially if the unit is dropped. 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. Personal Condition and Safety Equipment Users of this product risk injury to themselves and others if the unit is used improperly and/or safety precautions are not followed.
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SAFETY CS-310 Hearing/Ear Protection ECHO recommends wearing hearing 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. Dust masks can provide protection against dust, plant debris, and other plant matter such as pollen. Make sure the mask does not impair your vision, and replace the mask as needed to prevent air restrictions.
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CS-310 SAFETY Extended Operation / Extreme Conditions Prolonged exposure to cold and/or vibration may result in injury. Read and follow all safety and operation instructions to minimize risk of injury. Failure to follow instructions may result in painful wrist/hand/arm injuries. 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.
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SAFETY CS-310 Repetitive Stress Injuries (RSI) It is believed that overusing the muscles and tendons of the fingers, hands, arms, and shoulders may cause soreness, swelling, numbness, weakness, and extreme pain in those areas. Certain repetitive hand activities may put you at a high risk for developing a Repetitive Stress Injury (RSI). An extreme RSI condition is Carpal Tunnel Syndrome (CTS), which could occur when your wrist swells and squeezes a vital nerve that runs through the area.
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CS-310 SAFETY International Symbols Symbol X7503275300 © 1/2017 ECHO Inc. Description WARNING! Read and follow all safety precaution in the instruction manual. Failure to follow instructions could result in serious personal injury.
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SAFETY Symbol CS-310 Description Choke Control “COLD START” Position (Choke Closed) Symbol Description Purge Pump Measured maximum kickback value, without brake, for approved bar and chain combinations. Manual Safety Symbols and Important Information Throughout this manual and on the product itself, you will find safety alerts and helpful, informational messages preceded by symbols or key words. The following is an explanation of those symbols and key words and what they mean to you.
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CS-310 SAFETY The safety alert symbol accompanied by the word “WARNING” calls attention to an act or condition which CAN lead to serious personal injury or death if not avoided. 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. The enclosed message provides information necessary for the protection of the unit.
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EMISSION CONTROL CS-310 EMISSION CONTROL (EXHAUST & EVAPORATIVE) CARB And EPA Emissions Control Information The emission control system for the engine is EM (engine modification) and, if the second to last character of the Engine Family on the Emission Control Information label (sample below) is “B”, “C”, “K”, or “T”, the emission control system is EM and TWC (3-way catalyst). The fuel tank/ fuel line emission control system is EVAP (evaporative emissions).
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CS-310 DESCRIPTION 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. 1 11 2 10 9 3 8 7 6 5 4 12 13 14 22 15 21 20 X7503275300 © 1/2017 ECHO Inc.
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DESCRIPTION CS-310 1. CHAIN BRAKE LEVER/FRONT HAND GUARD - Locks and unlocks the chain brake to stop or allow saw chain rotation. Guard between the front handle and the saw chain helps protect the hand from injuries if the hand slips off the handle. 2. SPARK ARRESTOR MUFFLER OR SPARK ARRESTOR MUFFLER WITH CATALYST - The muffler or catalytic muffler controls exhaust noise and emission. The spark arrestor screen prevents hot, glowing particles of carbon from leaving the muffler.
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CS-310 DESCRIPTION 21. FRONT HANDLE - FOR THE LEFT HAND - Support handle located at the front of the engine housing. 22. OIL TANK CAP - For sealing the oil tank. CHAIN SAW TERMS 1. FAST IDLE - Throttle setting that causes engine to operate at a faster speed for easier starting. 2. THROTTLE LATCH - Device that sets idle speed to fast idle when choke control is operated. 3. CHAIN BRAKE - Stops the saw chain. 4. DRIVE SPROCKET - Drives saw chain. 5.
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DESCRIPTION CS-310 Guide Bar and Saw Chain Installation/Removal 1. Release the cylinder cover latches, and remove the cylinder cover. 2. Remove spark plug lead. 3. Remove sprocket guard nuts (A) and remove sprocket guard (B). 4. Remove guide bar and saw chain if necessary. Unlock chain brake Note: See “Maintenance and Care” section for guide bar/ saw chain maintenance procedures. A B 5.
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CS-310 DESCRIPTION Adjusting Chain Tension Always loosen sprocket guard nuts before turning the chain tension adjuster, otherwise the sprocket guard and tensioner will be damaged. 1. Release the cylinder cover latches, and remove the cylinder cover. Remove spark plug lead. 2. Unlock chain brake and loosen sprocket guard nuts. 3. Hold the bar nose up, and turn the adjuster screw (A) clockwise until chain contacts underside of the bar. Unlock chain brake A 4.
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OPERATION CS-310 Tighten guide bar nuts to 20-23 N•m (175-200 in•lbf). DO NOT overtighten nuts. Damage to saw may result. 6. Assemble components in reverse order. 7. Keep chain properly tensioned at all times. Note: All chains require frequent adjustments. OPERATION Fuel Diesel fuels and alternative fuels, such as E-15 (15% ethanol), E-85 (85% ethanol) or any fuels not meeting ECHO requirements are NOT approved for use in ECHO 2-stroke gasoline engines.
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CS-310 OPERATION Echo brand 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. ◆ 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.
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OPERATION CS-310 Spilled fuel is a leading cause of hydrocarbon emissions. Some states may require the use of automatic fuel shut-off containers to reduce fuel spillage. • Empty the fuel tank prior to storing the unit. Return unused fuel to an approved fuel storage container. 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.
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CS-310 OPERATION • Use bar and chain oil of high quality for this purpose. • Do not use used or reclaimed oil to avoid various oiler problems. • Use high quality bar and chain oil. • Use bar and chain oil of the following grades: • SAE No. 30....in summer • SAE No. 10....in winter or when cutting resinous trees. Fuel tank cap Oil tank cap • When refueling, also refill chain oil. Moving parts can amputate fingers or cause severe injuries. Keep hands, clothing and loose objects away from all openings.
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OPERATION CS-310 Winter Operation Air cleaner cover - Use the winter plug (A) to prevent carburetor trouble in winter. • Remove air cleaner cover. Remove plug from warm weather position (B), and install into cold weather position (C). A B C Note: For operation at normal temperature (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. 1.
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CS-310 5. Push purge pump (B) 3 to 4 times or until fuel is visible in purge pump. 6. Pull choke control knob all the way OUT (CLOSED [ ] choke position). ◆ ◆ ◆ OPERATION B After choke control knob is pulled and then knob is returned to original position, throttle remains slightly open (fast idle latch condition). 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. 7.
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OPERATION CS-310 ◆ Use the fast idle throttle latch only in starting. Note: If engine does not start after 5 pulls, repeat instructions. 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. 1. Move chain brake lever fully FORWARD to LOCK chain brake before starting. 2. Confirm there is fuel and chain oil in the tanks. 3.
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CS-310 OPERATION 1. After engine starts, allow it to return to idle and warm up before using. 2. Move chain brake lever fully REARWARD to UNLOCK chain brake. 3. Squeeze throttle trigger (B) gradually and increase engine speed. 4. The chain starts running when the engine reaches clutch engagement speed (see technical data page). 5. Confirm proper acceleration and lubrication of chain and bar. 6. Do not run the engine at high speed unnecessarily. 7.
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OPERATION CS-310 Checking Chain Tension Chain tension should be checked frequently during work and corrected as necessary. 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. Cutting Instructions General ◆ 32 This chain saw is designed for cutting wood. Do not cut metal, plastic or any non-wood material. X7503275300 © 1/2017 ECHO Inc.
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CS-310 ◆ ◆ ◆ OPERATION Read the “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 Kickback speed.
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OPERATION CS-310 Start the engine, see that it is running properly. Squeeze the trigger to open the throttle wide open and start the cut. If the chain is properly sharpened, the cutting should be relatively effortless. It is not necessary to press down hard to make the saw cut. Pushing the saw too hard will slow the engine and cutting will actually be more difficult. Sap from palm trees may corrode metal parts unless proper saw maintenance is performed.
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CS-310 OPERATION 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.
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OPERATION CS-310 To fell big trees with a diameter exceeding twice the bar length, start the notching cuts from one side and draw the saw through to the other 1 side of the notch. Start the back cut on one side of the tree, pivoting the saw through to form the desired hinge on that side. 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.
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CS-310 Keep in mind that the wood is heavy and that it will bend and pinch the saw if improperly supported. The trunk will weaken at the point where you make the cut unless the tree is lying on perfectly flat ground or supported as shown. If you make the cut with the tree on the ground, don’t let the saw’s chain dig into the earth; it is harmful for the saw, and you stand a good chance of being struck by flying debris. OPERATION When the bar nose hits another tree, etc.
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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: 1800-432-ECHO (3246) or on the web at www.echo-usa.com. Refer to your Chain Saw Safety Manual for tip guard application information. Guide Bar (Low-kickback) Replacement guide bars. The following guide bars may be considered to have equivalent kickback energy.
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CS-310 MAINTENANCE MAINTENANCE Moving parts can amputate fingers or cause severe injuries. 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. Allow unit to cool before performing service. Wear gloves to protect hands from sharp edges and hot surfaces. Your ECHO unit is designed to provide many hours of trouble free service.
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MAINTENANCE CS-310 Screws/Nuts/Bolts REQ’D SKILL LEVEL MAINTENANCE PROCEDURE COMPONENT/SYSTEM Inspect/Tighten/Replace * 1 Fuel System Inspect (1)* 1 Guide Bar & Sprocket Nose Inspect 1 Air Filter Replace * 1 Oil Filter Inspect/Replace * 1 Fuel Filter Inspect * 1 Fuel Cap Gasket Inspect * 1 Spark Plug Inspect/Clean/Replace * 1 Muffler Spark Arrestor Inspect/Clean/Replace * 2 Cylinder Exhaust Port Inspect/Clean/Decarbon 2 Fuel Filter Inspect/Replace * 1 Fuel Cap Gasket R
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CS-310 MAINTENANCE New engines must be operated a minimum duration of two tanks of fuel break-in before carburetor adjustments can be made. During the break-in period your engine performance will increase and exhaust emissions will stabilize. Idle speed can be adjusted as required. High Altitude Operation This engine has been factory adjusted to maintain satisfactory starting, emission, and durability performance up to 1,100 feet above sea level (ASL) (96.0 kPa).
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MAINTENANCE CS-310 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. Air Filter 1. Check before every use. 2. CLOSE choke ( 3. Press hand guard FORWARD and LOCK chain brake. 4. Release the cylinder cover latches (C) and remove cylinder cover (A) and air filter (B). 5. Lightly brush dust off air filter, or clean with compressed air, or replace the air filter. 6.
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CS-310 MAINTENANCE Fuel Filter • Check periodically. • Do not allow dust to enter fuel tank. • A clogged filter (A) will cause difficulty in starting engine or abnormalities in engine performance. 1. Pull filter out through gas port, and inspect filter. 2. When the filter is dirty, replace it. A Do not damage fuel line while removing fuel filter from tank. 3. When the inside of the fuel tank is dirty, rinse the tank out with gasoline to clean it.
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MAINTENANCE CS-310 Guide Bar 1. Clean before using. 2. Clean the groove (A) of the guide bar with a small screwdriver. 3. Clean oil holes (B) with a wire. 4. Invert guide bar periodically. 5. Clean the bar mount area before installing of the bar. A B Sprocket • A damaged sprocket will cause premature damage or wear of saw chain. Worn: 0.5 mm (0.020 in.) • 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.
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CS-310 MAINTENANCE • 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. This requirement also applies to all U.S. Forest Service lands.
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MAINTENANCE 1. Remove cylinder cover and remove spark plug lead. 2. Place piston at top dead center. 3. Remove muffler. Check parts for wear or damage, and replace if necessary. CS-310 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. 4. Use a wood or plastic scraping tool to clean deposits from cylinder exhaust port. 5. Install muffler.
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CS-310 MAINTENANCE Setting The Saw Chain Drive link Preset tie strap Left hand cutter Top plate Side plate Tie strap Guard link Depth gauge 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.
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MAINTENANCE CS-310 • To keep correct position and correct angle, use a file holder. • Hold the file horizontally. 90° • 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. 1/5 • One fifth of the file diameter remains above cutter edge. • Be sure to round off the front edge of the depth gauge. Depth gauge tool • Properly filed cutters are shown in illustration.
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CS-310 TROUBLESHOOTING • When chain has been filed on the bar, supply sufficient oil to it, move the chain slowly to wash away the filings before using again. 0.64 mm (0.025 in.) • If the chain saw is operated with filings clogged in the groove, the saw chain and the guide bar will be damaged prematurely. • If the saw chain becomes soiled with resin, for instance, clean it with kerosene and soak in it oil. Parallel Depth gauge To sharpen other chains, follow chain manufacturer’s instructions.
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STORAGE CS-310 ENGINE PROBLEM TROUBLESHOOTING CHART Problem Check Air filter Normal wear Spark arrestor screen N/A N/A Fuel vent Spark plug or Carburetor Engine does not accelerate Cooling properly system Engine does not crank Air filter dirty Cause Contaminants Fuel filter dirty or residue in fuel Fuel vent Contaminated plugged fuel Plug dirty or Normal wear worn Improper Vibration adjustment Extended Cooling in system dirty operation dirty or dusty or plugged locations Spark arrestor Normal we
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CS-310 SPECIFICATIONS • Allow engine to cool then remove the spark plug and pour 7 cc (1/4 oz.) of fresh, clean, two-stroke engine oil into the cylinder through the spark plug hole. • Store in a dry area, free from dust. Do not store in an enclosure where fuel fumes may accumulate or reach an open flame or spark. Do not lend or rent your chain saw without the Instruction manual and Safety manual. Note: • For future reference, you should keep this Instruction manual and the Safety manual.
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PRODUCT REGISTRATION CS-310 Model CS-310 Use 89 octane unleaded. Do not use fuel containing methyl alcohol, more than 10% ethyl Gasoline alcohol or 15% MTBE. Do not use alternative fuels such as E-15 or E-85. Oiling system automatic oiler Chain oil capacity 260 mL (8.8 US. fl. oz.) Starter system Automatic rewind starter Clutch Centrifugal type Sprocket type Spur type, 6-tooth, 3/8 in.
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SERVICING INFORMATION CS-310 SERVICING INFORMATION Parts/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. You can find these numbers on the engine housing. For future reference write them in the space provided below. Model No. _________________ Serial No.
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CS-310 SERVICING INFORMATION Additional or Replacement Manuals Replacement Operator or Safety Manuals, and Parts Catalogs, are available from your Authorized ECHO Service Dealer, or at www.echo-usa.com, or by contacting ECHO Inc., 400 Oakwood Road, Lake Zurich, IL 60047 (800-673-1558). Always check www.echo-usa.com for updated information. Safety Videos are available from your Authorized ECHO Service Dealer. A $5.00 shipping charge is required for each video. X7503275300 © 1/2017 ECHO Inc.
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C67815001001-C67815999999 C67915001001-C67915999999 ECHO, INCORPORATED 400 Oakwood Road Lake Zurich, IL 60047 www.echo-usa.