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X7503256004

© 08/2020 ECHO Incorporated

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.

Note:This product complies with CAN ICES-2/NMB-2.

Summary of Contents for CS-400

Page 1: ...xhaust 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...

Page 2: ...Preparation For Use 22 Operation 26 Fuel 26 Chain Lubricant 29 Winter Operation 30 Starting Cold Engine 30 Starting Warm Engine 32 Running 34 Stopping 35 Checking Chain Tension 35 Chain Lubrication T...

Page 3: ...eration maintenance storage and assembly specific to this product Scan QR codes for more information For additional literature including safety manuals where applicable or questions regarding terms us...

Page 4: ...ase know the model and serial number of your unit Product Registration Register your ECHO equipment on line at www echo usa com or by filling out the product registration sheet included in this manual...

Page 5: ...ich could result in serious personal injury The optional Kick GuardTM device is not installed on the guide bar when you purchase your chain saw The optional Kick GuardTM can be used in a majority of c...

Page 6: ...Cut at high engine speeds 5 Do not overreach or cut above shoulder height 6 Follow manufacturer s sharpening and maintenance instructions for the saw chain 7 Only use replacement bars and chains speci...

Page 7: ...d with wood chips function of the brake may deteriorate Always keep the device clean Do not increase engine RPM while the chain brake is locked Do not use a bar and chain combination other than those...

Page 8: ...1 3 Automatic Chain Brake Kickback produced from the tip of the guide bar will trip the automatic chain brake To make sure that the automatic chain brake operates properly follow these steps 1 Stop th...

Page 9: ...stopped the guide bar and saw chain to the rear and the muffler away from your body 10 Do not operate a chain saw that is damaged improperly adjusted or not completely and securely assembled Be sure...

Page 10: ...until the hole is sufficiently large so as to introduce the entire nose tip of the guide bar This technique should reduce the danger of kickback 25 Allow your chainsaw to cool before refueling and do...

Page 11: ...ing safety devices may result in serious or fatal injury Unit includes safety devices that reduce the likelihood of kickback Chain brake brake actuated by kickback energy not manual activation Reduced...

Page 12: ...d improperly and or safety precautions are not followed Proper clothing and safety gear must be worn when operating unit Physical Condition Your judgment and physical dexterity may not be good If you...

Page 13: ...plant matter such as pollen Make sure the mask does not impair your vision and replace the mask as needed to prevent air restrictions Proper Clothing Wear snug fitting durable clothing Pants should h...

Page 14: ...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 Exposure to vibration and cold may cause...

Page 15: ...Instead try to maintain a straight wrist position Also when grasping use your whole hand not just the thumb and index finger Take periodic breaks to minimize repetition and rest your hands Reduce the...

Page 16: ...and Head Protection Carburetor Adjustment Idle Speed Tip contact may cause the guide bar to move suddenly upward and backward which may cause serious injury Carburetor Adjustment Low Speed Mixture Co...

Page 17: ...porated Note Not all symbols will appear on your unit Choke Control COLD START Position Choke Closed Choke Control RUN Position Choke Open Purge Pump De Compression Device STOP Momentary STOP Switch S...

Page 18: ...njury or death if not avoided 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 safet...

Page 19: ...l line emission control system is EVAP evaporative emissions Evaporative emissions for California models are only applicable to fuel tanks and fuel feed lines An Emission Control Label is located on t...

Page 20: ...nd 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 45 Max 16A0CD3757...

Page 21: ...h to provide the power needed for cutting 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...

Page 22: ...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...

Page 23: ...ocket guard nuts D and remove sprocket guard C 4 Remove guide bar and saw chain if necessary Note See Maintenance and Care section for guide bar saw chain maintenance procedures 5 Mount guide bar on s...

Page 24: ...d 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 Always check chain brake operation a...

Page 25: ...uts with the bar nose held up 5 Pull the chain around the bar by hand Loosen the adjustment if you feel tight spots Tighten guide bar nuts to 20 23 N m 200 to 230 kgf cm 175 200 in lbf DO NOT over tig...

Page 26: ...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 Two Stroke Oil A...

Page 27: ...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 indoor...

Page 28: ...the use of automatic fuel shut off containers to reduce fuel spillage Storage Fuel storage laws vary by locality Contact your local government for the laws affecting your area As a precaution store f...

Page 29: ...of the following grades SAE No 30 in summer SAE No 10 in winter or when cutting resinous trees When refueling also refill chain oil Moving parts can amputate fingers or cause severe injuries Keep hand...

Page 30: ...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 Not...

Page 31: ...er 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...

Page 32: ...d then release throttle trigger to release fast idle throttle latch otherwise severe brake damage may occur Never use fast idle throttle latch for cutting Use the fast idle throttle latch only in star...

Page 33: ...s 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...

Page 34: ...arts 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 star...

Page 35: ...p engine Return the unit to your authorized dealer to check and repair stop switch before starting the engine again Do not operate with a loose chain Checking Chain Tension Chain tension should be che...

Page 36: ...ed upward with considerable force This is known as kickback Avoid it In all circumstances the operation of the chain saw is a one man job It is difficult at times to take care for your own safety so d...

Page 37: ...over and engine crankcase Never use metal tools for cleaning which can scratch the metal paint and allow corrosion to develop Clean sap accumulation from metal parts with cloth and warm water with soa...

Page 38: ...king back over the stump Begin the cut on the side to which the tree is to fall Cut a notch about 1 3 of the way into the tree The position of this notch is important since the tree will try to fall i...

Page 39: ...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 Limbing Limbing a fall...

Page 40: ...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...

Page 41: ...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 The following guide bars may be considered to have equi...

Page 42: ...an result Your unit is designed to provide many hours of trouble free service Regular scheduled maintenance will help your unit achieve that goal If you are unsure or are not equipped with the necessa...

Page 43: ...Q 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 Guide Bar Sprocket Nose Inspect Clean 1 Saw Chain Inspect Sha...

Page 44: ...ak 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...

Page 45: ...n result 6 Accelerate to full throttle for 2 3 seconds to clear any excess fuel in the engine then return to idle Accelerate engine to full throttle to check for smooth transition from idle to high sp...

Page 46: ...and request your dealer to inspect or replace 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...

Page 47: ...o shipment from factory 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 th...

Page 48: ...n 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 sp...

Page 49: ...ds In some of these areas the spark arrestor system must be certified per USDA Forest Service Regulation SAE J335 Check with your local or state authorities for specific regulations in your area Failu...

Page 50: ...cylinder 5 Use a wood or plastic scraping tool to clean deposits from cylinder exhaust port 6 Install muffler Tighten muffler mounting bolts or nuts to 8 11 N m 70 95 in lbf 7 Install engine cover an...

Page 51: ...tting performance increased vibration of chains and premature breakage of the saw chain Drive link serves to remove sawdust from the groove of the guide bar Keep the lower edge of the drive link sharp...

Page 52: ...s Then file top of depth gauge with the flat file until flat with top of the depth gauge tool One fifth of the file diameter remains above cutter edge Be sure to round off the front edge of the depth...

Page 53: ...G ENGINE PROBLEM TROUBLESHOOTING CHART Problem Check Status Cause Remedy Engine starts hard or Engine does not start Fuel at carburetor No fuel at carburetor Fuel strainer or fuel line obstructed Clea...

Page 54: ...taminants or residue in fuel Replace filter or replace fuel Fuel vent Fuel vent plugged Contaminated fuel Clean or replace Engine runs but dies or Engine does not accelerate properly Spark plug Plug d...

Page 55: ...letely 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...

Page 56: ...containing methyl alcohol more than 10 ethyl alcohol or 15 MTBE Do not use alternative fuels such as E 15 or E 85 Oil ISO L EGD ISO CD 13738 and JASO M345 FD two stroke air cooled engine oil Oiling sy...

Page 57: ...CS 400 NOTES X7503256004 57 08 2020 ECHO Incorporated NOTES...

Page 58: ...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 pr...

Page 59: ...CS 400 PRODUCT REGISTRATION X7503256004 59 08 2020 ECHO Incorporated...

Page 60: ...ECHO INCORPORATED 400 Oakwood Road Lake Zurich IL 60047 www echo usa com C69715001001 C69715999999...

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