Operator’s Manual CS-400 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. X7503255901 © 06/2019 ECHO Inc.
TABLE OF CONTENTS CS-400 TABLE OF CONTENTS Introduction ................................................................................................. 4 Servicing Information .................................................................................. 4 Parts/Serial Number............................................................................. 4 Service ................................................................................................. 5 ECHO Consumer Product Support ..........
CS-400 TABLE OF CONTENTS Maintenance ............................................................................................. Skill Levels ........................................................................................ Maintenance Intervals ....................................................................... Carburetor Adjustment ...................................................................... Air Filter ...............................................................................
INTRODUCTION CS-400 INTRODUCTION 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. Read and understand all provided literature. Literature contains specifications and information for safety, operation, maintenance, storage and assembly specific to this product.
CS-400 PACKING LIST Service Service of this product during the warranty period must be performed by an Authorized ECHO Service Dealer. For the name and address of the Authorized ECHO Service Dealer nearest you, ask your retailer or call: 1-800-432-ECHO (3246). Dealer information is also available on our Web Site www.echo-usa.com. When presenting your unit for Warranty service/ repairs, proof of purchase is required.
SAFETY CS-400 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.
CS-400 SAFETY 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. Make sure that the area in which you are cutting is free from obstructions.
SAFETY CS-400 • 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. If the chain does not stop immediately, return the saw to your authorized dealer for repair. Note: • For practice, while cutting a small tree, push the lever forward to lock the brake. • Confirm that the brake works properly before each use.
CS-400 ANSI Standard B175.1 and CSA Z62.1.3 stipulate 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 Standards B175.1 and CSA Z62.1.3 SAFETY 35 cm (14 in.
SAFETY CS-400 2. Do not operate a chain saw when you are fatigued. 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.
CS-400 SAFETY 20. When using a chain saw a fire extinguisher should be available. 21. When felling, keep at least 2 tree lengths between yourself and your fellow workers 22. Follow instructions in your operator’s manual for starting the chain saw. 23. Never adjust the guide bar or saw chain when the engine operating. 24.
SAFETY ◆ CS-400 NEVER reach into any opening while the engine is running. Moving parts may not be visible through openings. Using improper replacement components or removing safety devices may result in serious or fatal injury. 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.
CS-400 SAFETY • If you have taken alcohol or drugs Operate unit only if you are physically and mentally well. Eye Protection ◆ ◆ 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. Hand Protection Wear sturdy, no-slip, rubber work gloves to improve your grip on the handles.
SAFETY CS-400 • DO NOT OPERATE UNIT BAREFOOTED. Keep long hair away from engine and air intake. Retain hair with cap or net. Heavy protective clothing can increase operator fatigue, which may lead to heat stroke. Schedule heavy work for early morning or late afternoon hours when temperatures are cooler. The components of this machine generate an electromagnetic field during operation, which may interfere with some pacemakers.
CS-400 SAFETY 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.
SAFETY CS-400 Do not operate this product indoors or in inadequately ventilated areas. Engine exhaust contains poisonous emissions and can cause serious injury or death. International Symbols Symbol Description WARNING! Read and follow all safety precaution in the instruction manual. Failure to follow instructions could result in serious personal injury.
CS-400 SAFETY Symbol Description Symbol Description Chain Brake Operation Chain Oiler Adjustment Choke Control “COLD START” Position (Choke Closed) Purge Pump Measured maximum kickback value, without brake, for approved bar and chain combinations. X7503255901 © 06/2019 ECHO Inc.
SAFETY CS-400 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. The safety alert symbol accompanied by the word “DANGER” calls attention to an act or condition which WILL lead to serious personal injury or death if not avoided.
CS-400 EMISSION CONTROL 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 (3way catalyst). The fuel tank/fuel line emission control system is EVAP (evaporative emissions).
DESCRIPTION CS-400 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. 14 1 13 12 2 11 3 10 9 8 7 6 5 X5050009390 4 15 16 17 24 18 23 16A0CD3757 91PX57CQ Manual shows other combinations. Manuel montre d' autres combinaisons.
CS-400 DESCRIPTION 1. Chain Brake Lever/front Hand Guard 2. Spark Arrestor Muffler Or Spark Arrestor Muffler With Catalyst 3. Kick GuardTM (Optional) 4. Saw Chain 5. Guide Bar 6. Spiked Bumper 7. Chain Catcher 8. Chain Tension Adjuster 9. Chain Brake/sprocket Guard 10. Rear Hand Guard 11. Choke Control Knob 12. Purge Pump 13. Air Cleaner Cover 14. Cleaner Cover Knob 15. Spark Plug 16. Ignition Switch 17. Throttle Trigger Lockout 18. Rear Handle - For The Right Hand 19.
DESCRIPTION CS-400 Preparation For Use Saw chain is sharp! Always wear gloves when handling assembly, otherwise serious personal injury may result. Note: The machine may be delivered with guide bar, and saw chain separated. Install guide bar, optional Kick GuardTM, and saw chain as follows. Instructions to Install Optional Kick GuardTM to Bar Tools Needed: Two 11 mm (7/16 in.) Wrenches. 1. Install bolt (A) in rear hole (B) of Kick GuardTM and through front hole (C) in guide bar. 2.
CS-400 1. DESCRIPTION Remove air cleaner cover and disconnect spark plug lead. 2. Move the chain brake lever (A) (Front hand guard) fully REARWARD (UNLOCK chain brake) to remove or install the sprocket guard (C). 3. Remove sprocket guard nuts (D) and remove sprocket guard (C). 4. Remove guide bar and saw chain if necessary. A B Note: See “Maintenance and Care” section for guide bar / saw chain maintenance procedures. 5.
DESCRIPTION 7. 8. CS-400 Turn saw over, and check brake band (J) for correct position on clutch drum. If brake band is not in place around drum, remove sprocket guard, and reinstall. Tighten sprocket guard nuts finger tight. J Adjust saw chain tension, as instructed in “Adjustment, Chain Tension”. Improper sprocket guard assembly can result in serious injury, and will cause severe saw damage if unit is started. Never start or operate saw if brake band is not in place on clutch drum.
CS-400 4. OPERATION Tighten nuts with the bar nose held up. Shown with Optional Kick GuardTM 5. Pull the chain around the bar by hand. Loosen the adjustment if you feel tight spots. Shown with Optional Kick GuardTM Tighten guide bar nuts to 20-23 N•m (200 to 230 kgf•cm, 175-200 in•lbf). DO NOT over-tighten 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 CS-400 Fuel Requirements Gasoline - Use 89 Octane [R+M/2] (mid grade or higher) gasoline known to be good quality. Gasoline may contain up to 10% Ethanol (grain alcohol) or 15% MTBE (methyl tertiary-butyl ether). Gasoline containing methanol (wood alcohol) is 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.
CS-400 ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ OPERATION Use an approved fuel container. Mark fuel containers as containing 2-stroke mixture fuel. 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. NEVER refuel a unit when the engine is HOT or RUNNING! DO NOT fill fuel tanks indoors. ALWAYS fill fuel tanks outdoors over bare ground. DO NOT overfill fuel tank. Wipe up spills immediately.
OPERATION CS-400 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. • Empty the fuel tank prior to storing the unit. Return unused fuel to an approved fuel storage container. Stored fuel ages. Do not mix more fuel than you expect to use in 30 days, 90 days when a fuel stabilizer is added.
CS-400 OPERATION 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. 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.
OPERATION CS-400 Starting Cold 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. Fill the fuel tank with fuel mixture. Do not over fill. 3. Fill the chain oil tank with lubricant. Do not over fill. 4. Move ignition switch (A) UP to “RUN” position. Chain brake A 5. Push purge pump (B) 3 to 4 times or until fuel is visible in purge pump. 6.
CS-400 OPERATION 7. Securely hold the chain saw and pull starter handle several times until first starting sound. 8. Push choke control knob all the way IN (OPEN choke position). 9. Pull starter handle to start the engine. Note: Do not pull starter rope out to the maximum possible position. Note: Do not allow recoil handle to snap back against the casing. Note: If engine does not start after 5 pulls, repeat instructions.
OPERATION 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. Move ignition switch (A) UP to “RUN” position. CS-400 Chain brake A 4. Securely hold the chain saw as shown and pull starter handle. 5. Choke may be used if necessary, but after first starting sound, squeeze throttle trigger to release choke and return engine to idle. Note: If engine does not start after 5 pulls, use cold start procedure.
CS-400 OPERATION Running The saw chain should not move at idle, otherwise serious personal injury may result. Note: If saw chain moves adjust carburetor according to “Carburetor Adjustment” instructions in this manual, or see your dealer. 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.
OPERATION CS-400 Stopping 1. Release throttle trigger and allow engine to idle. 2. Move ignition switch (A) DOWN to “STOP” position. A Note: If engine does not stop, pull choke control knob out fully to stop engine. Note: Return the unit to your authorized 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.
CS-400 OPERATION Cutting Instructions General ◆ ◆ ◆ This chain saw is designed for cutting wood. Do not cut metal, plastic or any non-wood material. 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.
OPERATION 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. CS-400 Shown with optional Kick GuardTM Sap from palm trees may corrode metal parts unless proper saw maintenance is performed.
CS-400 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.
OPERATION CS-400 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.
CS-400 OPERATION 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. When the bar nose hits another tree, etc.
OPERATION CS-400 Guide Bar (Low-kickback) Replacement guide bars. The following guide bars may be considered to have equivalent kickback energy. • Sprocket nose guide bars of the same length and nose radius, same pitch and having the same number of teeth. • Hard nose guide bars of the same length and nose radius as a sprocket nose bar. Saw Chain (Low-kickback) Do not use replacement saw chain unless it has been designated as meeting ANSI B175.1 or CSA Z62.1, .
CS-400 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.
MAINTENANCE CS-400 Maintenance Intervals Component / System Maintenance Procedure Req’d Skill Level Daily or Before Use Air Filter Inspect / Clean * 1 Automatic Oiler Inspect / Adjust 1 Oil Filter Inspect 1 Fuel System Inspect 1 1 Guide Bar & Sprocket Nose Inspect / Clean * 1 Saw Chain 2 Sprocket Inspect / Sharpen / Replace / Tensioning * Inspect / Replace * Cooling System Inspect / Clean 2 Recoil Starter Rope Inspect / Clean * 1 Screws / Nuts / Bolts Inspect / Tighten / Repl
CS-400 MAINTENANCE 2 Model dependent * Replacement is recommended based on the finding of damage or wear during inspection. 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” (Low Speed) needle adjustment limiters that prevent settings outside acceptable limits.
MAINTENANCE CS-400 • 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. When carburetor adjustment is completed, the saw chain should not move at idle, otherwise serious personal injury may result. 6. Accelerate to full throttle for 2 - 3 seconds to clear any excess fuel in the engine, then return to idle.
CS-400 2. MAINTENANCE Correct the spark gap if it is wider or narrower than the standard gap. Check Fuel System • Check before every use. • 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. Fuel Filter • Check periodically. • Do not allow dust to enter fuel tank.
MAINTENANCE CS-400 Automatic Oiler • The discharge volume of the automatic oiler is adjusted to approximately 4 mL/min at 7000 r/ min, prior to shipment from factory. A Increase Decrease • Always check oil discharge when in use. • Turn adjusting screw (A) counterclockwise to increase oil volume, clockwise to decrease oil volume. • Do not turn the adjusting screw beyond the maximum or minimum limit of volume adjustment. Oil Filter • Check periodically. • Do not allow dust to enter into oil tank.
CS-400 Sprocket MAINTENANCE Worn: 0.5 mm (0.020 in.) • A damaged sprocket will cause 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. 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. Cooling System Cleaning • Check periodically. • Clogged fins will result in poor engine cooling.
MAINTENANCE CS-400 Spark Arrestor Muffler • The spark arrestor muffler controls the exhaust noise and prevents hot, glowing particles of carbon from leaving the muffler. • 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.
CS-400 MAINTENANCE Exhaust Port Cleaning Level 2. Parts Required: As needed: Muffler gasket 1. Remove air cleaner cover and remove spark plug lead. 2. Remove engine cover. 3. Place piston at top dead center. 4. Remove muffler. Check parts for wear or damage, and replace if necessary. 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. 5.
MAINTENANCE CS-400 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.
CS-400 MAINTENANCE • 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.
TROUBLESHOOTING CS-400 • 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.
CS-400 TROUBLESHOOTING ENGINE PROBLEM TROUBLESHOOTING CHART Problem Engine runs, but dies or Engine does not accelerate properly Check Status Cause Remedy Air filter Air filter dirty Normal wear Fuel filter Fuel filter dirty Contaminants or Replace filter or residue in fuel replace fuel Fuel vent Fuel vent plugged Contaminated fuel Clean or replace Spark plug Plug dirty or worn Normal wear Clean and adjust or replace Carburetor Improper adjustment Vibration Adjust Cooling system Co
STORAGE CS-400 STORAGE Storage After Use • Inspect and adjust every part of the chain saw. • Completely clean every part and repair if necessary. • Apply thin coating of oil on metal parts to prevent rust. • Remove chain and guide bar. • Drain fuel tank completely. Press purge bulb 6-7 times to remove remaining fuel from carburetor then drain the tank again. Close choke, start and run the engine until it stops due to lack of fuel. • Allow engine to cool. Remove the spark plug lead from the spark plug.
CS-400 SPECIFICATIONS SPECIFICATIONS MODEL CS-400 Length 393 mm (15.5 in.) Width 243mm (9.56 in) Height 277 mm (10.1 in.) Dry weight 4.6 kg (10.1 lb.) Without chain and guide bar Engine Air-cooled two-stroke single cylinder Displacement 40.2 mL (2.45 cu. in.) Bore 40.0 mm (1.58 in.) Stroke 32.0 mm (1.259 in.) Compressions ratio 6.5:1 Carburetor Diaphragm type Spark plug NGK BPMR8Y (Gap 0.65 mm [0.026 in.]) Fuel tank capacity 410 mL (13.9 US. fl. oz.
PRODUCT REGISTRATION CS-400 PRODUCT REGISTRATION Thank you for choosing ECHO Power Equipment 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.
CS-400 X7503255901 © 06/2019 ECHO Inc.
NOTES CS-400 NOTES 58 X7503255901 © 06/2019 ECHO Inc.
CS-400 X7503255901 © 06/2019 ECHO Inc.
C69715001001 - C69715999999 ECHO INCORPORATED 400 Oakwood Road Lake Zurich, IL 60047 www.echo-usa.
