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26

CS-400F

25

CS-400

Oil filter

Fuel filter

Oil tank cap

Fuel tank cap

0.65 mm (0.026 in.)

AIR FILTER

• Check before every use.
• Loosen cleaner cover knob and remove air

cleaner cover and filter.

• Brush off dust lightly, or clean with compressed

air, or replace the air filter.

• Reinstall air filter and cover.

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.

SPARK PLUG

• Check periodically.
• The standard spark gap is 0.65 mm

(0.026 in.).

• Correct the spark gap if it is wider or

narrower than the standard gap.

• Fastening torque: 15 to 17 N

·

m

(130 to 145 in. lb.).

FUEL FILTER

• Check periodically.
• Do not allow dust to enter fuel tank.
• A clogged filter will cause difficulty in starting

engine or abnormalities in engine performance.

• Pull the fuel filter out through fuel inlet port with a

piece of steel wire or the like.

• When the filter is dirty, replace it.
• When the inside of the fuel tank is dirty, rinsing

the tank out with gasoline can clean it.

OIL FILTER

• Check periodically.
• Do not allow dust to enter into oil tank.
• A clogged oil filter will affect the normal

lubricating system.

• Pull it out through oil filling hole with a piece of

steel wire or the like.

• If the filter is dirty, wash it in gasoline or replace

it.

• When the inside of the tank gets dirty, rinsing the

tank out with gasoline can clean it.

Cleaner cover knob

Spark plug

Air cleaner cover

Air filter

Cylinder cover

Air filter  cover

0.65 mm (0.026 in.)

AIR FILTER

•  Check before every use.

•  Close choke ( ).

•  Loosen cleaner cover knob and remove air cleaner 

cover and filter.

•  Brush off dust lightly, or clean with compressed air, or 

replace the air filter.

•  Reinstall air filter and cover.

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.

SPARK PLUG

•  Check periodically.

•  The standard spark gap is 0.65 mm (0.026 in.).

•  Correct the spark gap if it is wider or narrower than the 

standard gap.

•  Fastening torque: 

150 to 170 Kgf • cm  

 

 

 

 

 

(130 to 145 in • lbf).

FUEL FILTER

•  Check periodically. 

•  Do not allow dust to enter fuel tank. 

•  A clogged filter will cause difficulty in starting engine or 

abnormalities in engine performance.

•  Pull the fuel filter out through fuel inlet port with a piece 

of steel wire or the like. 

•  When the filter is dirty, replace it.

•  when the inside of the fuel tank is dirty, rinsing the tank 

out with gasoline can clean it.

OIL FILTER

•  Check periodically.

•  Do not allow dust to enter into oil tank.

•  A clogged oil filter will affect the normal lubricating 

system. 

•  Pull it out through oil filling hole with a piece of steel 

wire or the like. 

•  If the filter is dirty, wash it in gasoline or replace it. 

•  when the inside of the tank gets dirty, rinsing the tank 

out with gasoline can clean it.

Cleaner cover knob

Spark plug

Air cleaner cover

Air filter

Cylinder cover 

Air filter  cover

NOTE

Federal EPA regulations require all model year 

2012 and later gasoline powered engines produced 

for sale in the United States to be equipped with a 

special low permeation fuel supply hose between 

the carburetor and fuel tank. when servicing model 

year 2012 and later equipment, only fuel supply 

hoses certified by EPA can be used to replace 

the original equipment supply hose. Fines up to 

$37,500 may be enforced for using an un-certified 

replacement part.

Summary of Contents for CS-400F

Page 1: ...rs if the unit is used improperly and or safety precautions are not followed ECHO provides an 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 Chain Saw Instruction Manual MODEL CS 400F ...

Page 2: ...tor Adjustment 25 High Altitude Operation 25 SETTING THE SAW CHAIN 29 TROUBLESHOOTING 31 STORAGE AFTER USE 32 TECHNICAL DATA 33 Warranty Statements 34 Servicing Information 36 This chain saw is designed for cutting wood or wood products Do not cut solid metal sheet metal plastic or any non wood materials Specifications descriptions and illustrative material in this literature are as accurate as kn...

Page 3: ...r missing parts Use the packing list to check for missing parts Warranty registration card ECHO Power Blend X 2 stroke oil sample Instruction manual Safety manual ECHO chain saw Saw chain Guide bar Kick Guard Assembly Tool s X7503206101 X750009891 11 08 WARNING Read rules for safe operation and instructions carefully ECHO provides an Instruc tion Manual and a Safety Manual Both must be read and un...

Page 4: ...in 7 Only use replacement bars and chains specified by the manufacturer or the equivalent WARNING 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 o...

Page 5: ...aler 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 If the chain brake is clogged with wood chips func tion of the brake may deteriorate Always keep the device clean Do not increase engine RPM s while the chain brake is locked CORRECT USE OF CHAIN BRAKE The installation of a chain brake may be m...

Page 6: ...eration A chain saw is intended for two handed use 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 start...

Page 7: ...not remove the spark arrestor screen WARNING Using improper replacement components or removing safety devices may result in serious or fatal injury WARNING During operation the muffler or catalytic muffler and surrounding cover become hot Never suspend the saw on a lanyard with the engine running Always use the saw from the right hand side of your body NEVER from the left side Always wear proper s...

Page 8: ...s hands wrists or arms The sooner RSI CTS is diagnosed the more likely permanent nerve and muscle damage can be prevented EYE AND HEARING PROTECTION Wear eye protection goggles that meet ANSI Z 87 1 requirements Goggles meeting the require ments have the mark Z 87 stamped on them Wear hearing protection If this guideline is not followed hearing loss can occur ECHO recommends wearing hearing protec...

Page 9: ...anied by the word DANGER calls attention to an act or condition which WILL lead to serious personal injury or death if not avoided Carburetor adjustment Idle speed Carburetor adjustment High speed mixture WARNING Read and follow all safety precaution in the instruction manual Failure to follow instructions could result in serious personal injury Wear eyes ears and head protection Carburetor adjust...

Page 10: ...MISSION COMPLIANCE PERIOD 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 mainte nance procedures are followed as listed in the Maintenance Section of this manual emission control exhaust evaporative EPA 2010 and Later and or C A R B TIER III An Emission ...

Page 11: ...tion and instructions carefully ECHO provides an Instruc tion Manual and a Safety Manual Both must be read and understood for proper and safe operation ChainSaw Instruction Manual MODEL CS 341 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 3 DESCRIPTION OF PARTS ...

Page 12: ...if it breaks or degrooves 14 Choke control knob Device for enriching the fuel air mixture in the carburetor to aid cold starting Also activates fast idle throttle latch 15 Purge pump When starting engine push purge pump 3 or 4 times 16 Air cleaner cover Covers air filter 17 Cleaner cover knob Device for installing the air cleaner cover 18 Ignition switch Device for connecting and discon necting th...

Page 13: ...e recess E in guide bar 3 Tighten nut F and bolt A using 11 mm 7 16 in wrenches until snug Make certain Kick Guard is flush against guide bar 4 Tighten nut F 1 8 additional turn 5 Check to make certain Kick Guard is tight on guide bar GUIDE BAR AND SAW CHAIN IN STALLATION REMOVAL NOTE Move the chain brake lever Front Hand Guard A fully rearward to remove or install the clutch cover C to chain saw ...

Page 14: ...evere 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 after replacing cover Do not use saw if chain brake does not function properly ADJUSTING CHAIN TENSION IMPORTANT Always loosen clutch cover knob before turning the chain tension adjuster otherwise the clutch cover and tensioner will be damaged 1 Remove spar...

Page 15: ...in ECHO 2 stroke gasoline engines Use of alternative fuels may cause performance problems loss of power overheating fuel vapor lock and unintended machine operation including but not limited to improper clutch engagement Alternative fuels may also cause premature deterioration of fuel lines gaskets carburetors and other engine components Gasoline Use 89 Octane R M 2 mid grade or higher gasoline kn...

Page 16: ...tilated unoccupied building away from sparks and flames Fuel Mix Chart 50 1 IMPORTANT Stored fuel ages Do not mix more fuel than you expect to use in thirty 30 days ninety 90 days when a fuel stabilizer is added IMPORTANT Stored two stroke fuel may separate ALWAYS shake fuel container thoroughly before each use Oil tank cap Fuel tank cap Cap indication Fuel oil tanks are indicated by the following...

Page 17: ...o not start engine before chain brake is activated CAUTION After starting the engine squeeze throttle trigger slightly to release throttle latch and pull front hand guard towards the operator immediately Chain brake unlocked position Never use throttle latch for cutting Use the chain brake only in starting or in emergencies Start Run Ignition switch Chain brake Starter handle Unlock chain brake Ch...

Page 18: ...anks Move ignition switch to RUN position Securely hold the chain saw as shown and pull starter handle Choke may be used if necessary but after first firing 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 Open choke Choke control knob Lock Chain brake NOTE Do not increase engine speed while chain brake i...

Page 19: ...rate 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 Unlock chain brake 16 CS 400 RUNNING When engine starts keep idling for a few minutes Set the brake lever in the unlocked position before starting to cut Pull throttle trigger gradually and increase rev...

Page 20: ...s 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 don t assume the responsibility for a helper as well After you have learned the basic techniques of using the saw your best aid will be your own good common sense The accepted way to hold the saw is to stand to the left of the saw with your ...

Page 21: ...opposite the notch and at a level about 5 cm 2 in above the bottom of the notch Do not try to cut through to the notch with the felling cut The remaining wood between the notch cut and felling cut about 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 To fell ...

Page 22: ...ew basic rules which apply to all bucking operations Keep both hands on the handles at all times Support logs if possible When cutting on a slope or hillside always stand uphill 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 a...

Page 23: ... chain saws CHAIN AND GUIDE BAR COMBINATION The following combinations are recommended for model CS 400F Guide Bar Saw Chain Length ECHO Part No Pitch Type Links mm in Low kickback mm in 406 16 16A0CD3757 9 53 3 8 91VG 91PX 57 457 18 18A0CD3762 9 53 3 8 91VG 91PX 62 GUIDE BAR Low kickback Replacement guide bars The following guide bars may be considered to have equivalent kickback energy Sprocket ...

Page 24: ...fers REPOWERTM Maintenance Kits and Parts to make your maintenance job easier maintenance intervals COMPONENT SYSTEM MAINTENANCE PROCEDURE REQ D SKILL LEVEL DAILY OR BEFORE USE EVERY REFUEL 3 MONTHS OR 90 HOURS YEARLY 600 HOURS Air Filter Inspect Clean 1 I C R Automatic Oiler Inspect Adjust 1 I Oil Filter Inspect Replace 1 I I C Fuel System Inspect Replace 1 I 1 I 1 Fuel Filter Inspect Replace 1 I...

Page 25: ... 2 Make sure the bar and chain are properly adjusted 3 Start engine and run several minutes to bring to operating temperature Flash choke twice during warm up to clear any air from the fuel system 4 Stop engine Turn H speed needle counterclockwise CCW to stop Turn L speed needle midway between full clockwise CW stop and CCW stop 5 Idle Speed Adjustment Start engine turn Idle speed adjustment screw...

Page 26: ...ter Brush off dust lightly or clean with compressed air or replace the air filter Reinstall air filter and cover 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 SPARK PLUG Check p...

Page 27: ...has holes burned through Assemble components in reverse order NOTE Carbon deposits in muffler will cause drop in engine output Spark arrestor screen must be checked periodically Worn 0 5 mm 0 020 in Groove Oil hole Cylinder fins Spark arrestor screen Muffler Screen cover Sprocket SPARK ARRESTOR MUFFLER The spark arrestor muffler controls the exhaust noise and prevents hot glowing particles of carb...

Page 28: ... muffler gasket and muffler 7 Tighten muffler mounting bolts or nuts to 70 95 in lbf 80 110 kgf cm 8 Install engine cover and attach spark plug lead 9 Replace air filter cover 10 Start engine and warm to operating temperature 11 Stop engine and re tighten mounting bolts or nuts to specifica tions A B Adjusting screw Decrease Increase AUTOMATIC OILER The discharge volume of the automatic oiler is a...

Page 29: ... Note that blunt or irregular cutters will result in poor cutting 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 where indicated SETTING SAW CHAIN For setting saw chain round file 4 0 mm dia 5 32 in and flat file are used To keep correct position and c...

Page 30: ...ished soak it in oil and wash away filings completely before using When chain has been filed on the bar supply suf ficient oil to it move the chain slowly to wash away the filings before using again 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 kerosen...

Page 31: ... e d o h c E r u o y e e S r e l a e d o h c E r u o y e e S g u l p t a k r a p S k r a p s o N t c e r r o c n i p a g k r a p S n o b r a c h t i w d e r e v o C l e u f h t i w d e l u o F e v i t c e f e d g u l P n i 6 2 0 0 m m 5 6 o t t s u j d A e c a l p e r r o n a e l C e c a l p e r r o n a e l C g u l p e c a l p e R s n u r e n i g n E r o s e i d t u b t o n s e o d e t a r e l e c...

Page 32: ...o 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 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 dr...

Page 33: ...se 89 octane unleaded Do not use fuel containing methyl alcohol more than 10 ethyl alcohol or 15 MTBE Do not use alternative fuels such as E 15 or E 85 Tank capacity L 0 41 13 9 US fl oz Oil Bar and chain ECHO bar and chain oil or motor oil Tank capacity L 0 28 9 5 US fl oz Guide bar and See page 23 for Chain and Guide Bar Combination saw chain Lubrication Adjustable automatic oil pump Engine spee...

Page 34: ...use will be covered by this limited warranty for five 5 years from date of purchase EXCEPTIONS For two stroke engine powered products the electronic ignition module flexible drive cables SRM solid drive shafts and TC tines are warranted for the life of the product on parts only Cutting attachments such as but not limited to bars chains sprockets blades and nylon trimmer heads for residential or no...

Page 35: ...edures stale fuel including failure to provide or perform required maintenance services as prescribed in the operator s manual Preventative maintenance as outlined in the operators manual is the customer s responsibility Failures due to improper set up pre delivery service or repair service by anyone other than authorized ECHO servicing dealer during the warranty period Certain parts and other ite...

Page 36: ...irs proof of purchase is required echo consumer product support If you require assistance or have questions concerning the ap plication operation or maintenance of this product you may call the ECHO Consumer Product Support Department at 1 800 673 1558 from 8 30 am to 4 30 pm Central Standard Time Monday through Friday Before calling please know the model and serial number of your unit warranty re...

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