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CS-501P

OPERATION

X7503312804

39

© 01/20 ECHO Incorporated

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.

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-501P.

Use of replacement saw chain and/or guide bar other than that 
specified, or operation without the optional Kick Guard

TM

 in 

place, may cause severe kickback resulting in serious injury.

Only use saw chain designated as, “LOW-KICKBACK,” that 
meets ANSI B175.1 or CSA Z62.1, .3 Standard when tested on 
the representative sample of chain saws below 3.8 C.I.D., and 
Echo guide bar specified.

Chain and guide bar gauge size must be identical. Use Bar/Chain 
combinations shown in table above.

Guide Bar

Saw Chain

Length mm 

(in.)

ECHO Part No.

Pitch mm (in.)

Type

Links

Low-kickback

406 (16)

16FOLD3366

8.26 (0.325)

20LPX66CQ / 

20BPX66CQ

66

457 (18)

18FOLD3372

8.26 (0.325)

20LPX72CQ / 

20BPX72CQ

72

508 (20)

20FOLD3378

8.26 (0.325)

20LPX78CQ / 

20BPX78CQ

78

When the bar nose hits

another tree, etc.

Summary of Contents for CS-501P

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 do so could result in serious injury Note This product complies with CAN ICES 2 NMB 2 ...

Page 2: ...ain Brake 8 Personal Condition and Safety Equipment 13 International Symbols 17 Manual Safety Symbols and Important Information 19 Emission Control Exhaust Evaporative 20 CARB And EPA Emissions Control Information 20 Description 21 Preparation For Use 23 Operation 26 Fuel 26 Chain Lubricant 29 Starting Cold Engine 30 Starting Warm Engine 32 Running 33 Stopping 34 Checking Chain Tension 34 Chain Lu...

Page 3: ...stment 43 Air Filter 44 Spark Plug 45 Check Fuel System 45 Fuel Filter 45 Automatic Oiler 46 Oil Filter 46 Guide Bar 47 Sprocket 47 Cooling System Cleaning 47 Spark Arrestor Muffler 48 Spark Arrestor Screen 49 Setting The Saw Chain 49 Troubleshooting 52 Storage 54 Storage After Use 54 Specifications 55 Product Registration 56 Notes 58 ...

Page 4: ...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 used in this manual visit https www echo usa com manuals OR https www shindaiwa usa com manuals SERVICING INFORMATION Parts Serial Number Genuine ECHO Parts and Assemblies for your ECHO products are ava...

Page 5: ...plication operation or maintenance of this product call the ECHO Consumer Product Support Department at 1 800 432 ECHO 3246 from 8 00 am to 5 00 pm Central Standard Time Monday through Friday Before calling please 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 t...

Page 6: ... 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 toward...

Page 7: ...to accidents 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 ...

Page 8: ...nd 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 If the chain does not stop immediately return the saw to your authorized dealer for repair Note For practice while c...

Page 9: ...to the required safety standard Chain brakes have been designed and tested to comply with international safety standards as follows USA ANSI Standard B175 1 Safety Requirement for chain saws Canada CSA Standard Z62 1 Z62 3 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...

Page 10: ... the operator helpers bystanders or any combination of these persons may result from one handed operation 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...

Page 11: ...For example if improper tools are used to remove the flywheel or if an improper tool is used to hold the flywheel in order to remove the clutch structural damage to the flywheel could occur and could subsequently cause the flywheel to burst 18 When transporting your chain saw use the appropriate guide bar scabbard 19 A spark arrestor muffler approved to SAE Standard J335 is standard on this chain ...

Page 12: ...lower body from sharp saw chain and hot muffler Always keep exhaust area clear of flammable debris during transportation or when storing otherwise serious property damage or personal injury may result 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 co...

Page 13: ... Harm www P65Warnings ca gov 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 Users of this product risk injury to themselves and others if the unit is used improperly and or safety precautions are not followed Proper clothing and safety gear must be worn when operating unit Phy...

Page 14: ...o 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 Proper Clothing Wear snug fitting durable clothing ...

Page 15: ...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 Exposure to vibration and cold may cause tingling and burning sensations followed by loss of color and numbness in the fingers The following precautions...

Page 16: ...o the following Avoid using your wrist in a bent extended or twisted position 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 speed and force with which you do the repetitive movement Do exercises to strengthen the hand and arm muscles Immediately ...

Page 17: ...ion manual Failure to follow instructions could result in serious personal injury Carburetor Adjustment High Speed Mixture Wear Eye Ear 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 Contact of the guide bar tip with any object should be avoided Emer...

Page 18: ...O Incorporated 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 Symbol Description Symbol Description ...

Page 19: ... injury 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 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 nec...

Page 20: ...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 the engine This is an EXAMPLE ONLY information on label varies by engine FAMILY Product Emission Durability Emission Compliance Period The 50 or 300 hour emission compliance period is the time span sel...

Page 21: ... 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 1 2 3 4 5 6 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 7 X5050009480 X5050009480 ...

Page 22: ... enough to provide the power needed for cutting 1 Choke Control Knob 2 Decompression Device 3 Front Hand Guard 4 Spark Arrestor Muffler Or Spark Arrestor Muffler With Catalys 5 Guide Bar 6 Saw Chain 7 Spiked Bumper 8 Chain Catcher 9 Chain Brake Sprocket Guard Nuts 10 Chain Tension Adjuster 11 Rear Hand Guard 12 Cylinder Cover 13 Support Handle for Left Hand 14 Air Cleaner Cover Knob 15 Air Cleaner...

Page 23: ...n 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 optional Kick GuardTM and through front hole C in guide bar 2 IMPORTANT Dimple D in optional Kick GuardTM must engage recess E in guide bar 3 Securely tighten nut F and bolt A Guide Bar and Saw Chain Installation Removal 1 Disconnect spark plug lead 2 Unlock ...

Page 24: ... forward 6 Install sprocket guard C over guide bar studs F Make sure chain tension adjuster pin fits into the guide bar adjuster hole H brake band is positioned around clutch drum F Tighten sprocket guard nuts finger tight 7 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 st...

Page 25: ...erwise the sprocket guard and tensioner will be damaged 1 Remove air cleaner cover and disconnect spark plug lead 2 Loosen sprocket guard nuts 3 Hold the bar nose up and turn the adjuster toward until chain contacts underside of the bar 4 Tighten nuts with the bar nose held up 5 Pull the chain around the bar by hand Loosen the adjustment if you feel tight spots ...

Page 26: ...clutch engagement Diesel or alternative fuels may also cause premature deterioration of fuel lines gaskets carburetors and other engine components 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...

Page 27: ... AVOID repeated or prolonged skin contact 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 Use an approved fuel container Mark fuel cont...

Page 28: ...he proper amount of 2 stroke oil to gasoline 3 Close container and shake to mix oil with gasoline 4 Add remaining gasoline close fuel container and remix Spilled fuel is a leading cause of hydrocarbon emissions Some locations may require 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 affect...

Page 29: ...imum and assures a longer service life 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 When refueling also refill chain oil Moving parts can amputate fingers or cause severe in...

Page 30: ...particles from the engine Metal cutters can also create sparks if the cutter strikes rocks metal or other hard objects Contact local fire authorities for laws or regulations regarding fire prevention requirements Starting Cold Engine Make sure the bar and chain are free from any obstruction when starting the chain saw 1 Move chain brake lever A fully FORWARD to LOCK chain brake before starting 2 F...

Page 31: ...ot pull starter rope out to the maximum possible position Do not allow starter handle to snap back against the casing If engine does not start after 5 pulls repeat instructions After starting the engine immediately squeeze and 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 th...

Page 32: ... tanks 3 Move ignition switch B to UP position 4 Press the decompression device D 5 Securely hold the chain saw as shown and pull starter handle E 6 Choke C may be used if necessary but after first starting sound squeeze throttle trigger lock G and throttle trigger F to release choke C and return engine to idle Note If engine does not start after 5 pulls use cold start procedure Note Do not increa...

Page 33: ... to idle and warm up before using 2 Move chain brake lever A fully REARWARD to UNLOCK chain brake 3 Squeeze squeeze throttle trigger lock G and throttle trigger F 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 u...

Page 34: ...ut 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 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...

Page 35: ...d 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 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 ...

Page 36: ...cover and engine crankcase Never use metal tools for cleaning which may scratch the metal paint and allow corrosion to develop Clean sap accumulation from metal parts with cloth and warm water with soap Rinse with clean water and dry metal surfaces Apply a light coating of engine or bar and chain oil to metal parts after they are cleaned Install and properly tension guide bar and chain Run engine ...

Page 37: ...cking 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 into the notch The felling cut is made on the side 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 remai...

Page 38: ...cut to reach the hinge Limbing Limbing a fallen tree is much the same as bucking Never stand on the tree that you are limbing When limbing caution is the word Be careful of the tip touching other limbs Always use both hands Don t cut with the saw overhead or aligned vertically with your body If the saw should kickback you may not have enough control to prevent possible injury Bucking Bucking is th...

Page 39: ...bination The following combinations are recommended for model CS 501P Use of replacement saw chain and or guide bar other than that specified or operation without the optional Kick GuardTM in place may cause severe kickback resulting in serious injury Only use saw chain designated as LOW KICKBACK that meets ANSI B175 1 or CSA Z62 1 3 Standard when tested on the representative sample of chain saws ...

Page 40: ... same length and nose radius as a sprocket nose bar Saw Chain Low kickback Optional Kick GuardsTM 2894902 for ECHO models CS 271 CS 400 2893202 for ECHO models CS 450 CS 800P 2894902 for Shindaiwa models 305s 340s 358TS 402s 2893202 for Shindaiwa models 491s 591 600SX MAINTENANCE Moving parts can amputate fingers or cause severe injuries Keep hands clothing and loose objects away from all openings...

Page 41: ... each maintenance task has been graded If the task is not listed see your Dealer for repairs The use of emission control components other than those specifically designed for this unit is a violation of federal law Skill Levels 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...

Page 42: ... Guide Bar Sprocket Nose Inspect Clean 1 Saw Chain Inspect Sharpen Replace Tensioning 2 Sprocket Inspect Replace 2 Cooling System Inspect Clean 2 Recoil Starter Rope Inspect Clean 1 Screws Nuts Bolts Inspect Tighten Replace 1 Lifting Hook Inspect1 1 Every Refuel Fuel System Inspect 1 Guide Bar Sprocket Nose Inspect 1 3 Months Air Filter Replace 1 Oil Filter Inspect Replace 1 Fuel Filter Inspect 1 ...

Page 43: ... This engine has been factory adjusted to maintain satisfactory starting and durability performance up to 1 100 feet above sea level ASL 96 0 kPa To maintain proper engine operation above 1 100 feet ASL the carburetor may need to be adjusted by an authorized service dealer If the engine is adjusted for operation above 1 100 feet ASL the carburetor must be re adjusted when operating the engine belo...

Page 44: ...ck for smooth transition from idle to high speed If engine hesitates turn L needle CCW 1 8 turn and repeat acceleration Continue adjustment until smooth acceleration results 7 Check idle speed and reset if necessary as described in item 5 If a tachometer is available idle speed should be set to value listed on technical data page When starting idling adjustment speed should be adjusted to prevent ...

Page 45: ...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 performance 1 Pull filter out through gas port and inspect filter Do not damage fuel line while removing fuel filter from tank 2 When the filter is dirty replace it as follows 3 Do not remove the wir...

Page 46: ...in prior to 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 the maximum or minimum limit of volume adjustment Oil Filter Check periodically Do not allow dust to enter into oil tank A clogged oil filter B will affect the normal lubricating system 1 Pull...

Page 47: ...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 1 Remove air cleaner cover cylinder ...

Page 48: ...bustion 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 In some of these areas the spark arrestor system must be certified per USDA Forest Service Regulation SAE J335 Check with your local or s...

Page 49: ...cracked or has holes burned through 5 Assemble components in reverse order Note When cleaning carbon deposit be careful not to damage the catalytic element inside muffler Setting The Saw Chain 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 ...

Page 50: ...at file are used Push file as shown To keep correct position and correct angle use a file holder Hold the file horizontally 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 One fifth of the file diameter remains above cutter edge Be sure to round off the front edge of the depth g...

Page 51: ...fficient 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 kerosene and soak in it oil To sharpen other chains follow chain manufacturer s instructions 55 Side plate angle 30 Top p...

Page 52: ... with fuel Fuel mixture too rich OPEN choke Clean or replace air filter Adjust carburetor See your dealer Spark at end of plug wire No spark Stop switch OFF Electrical problem Interlock switch Turn switch to ON See your dealer Spark at plug Incorrect gap Covered with carbon Fouled with fuel Plug defective Adjust to 0 65mm 0 026 in Clean or replace plug Engine runs but dies or Engine does not accel...

Page 53: ...ut dies or Engine does not accelerate properly Spark plug Plug dirty or worn Normal wear Clean and adjust or replace Carburetor Improper adjustment Vibration Adjust Cooling system Cooling systemdirty or plugged Extended operation in dirty or dusty locations Clean Spark arrestor screen Spark arrestor screen plugged Normal wear Replace Engine does not crank N A Internal engine problem See your deale...

Page 54: ...pletely 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 Remove the spark plug Pour 7 cc 0 25 oz of fresh clean two stroke engine oil into the cylinder through the spark plug hole Store in a dry area free from dust ...

Page 55: ...thyl 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 system Adjustable automatic oiler Chain oil capacity 280 mL 9 5 US fl oz Starter system Automatic rewind starter Clutch Centrifugal type Sprocket type Spur type 6 tooth 3 8 in pitch Chain brake Automatic band brake ...

Page 56: ...oduct 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 If you do not have access to the Internet you can complete the form below and mail to ECHO Incorporated Product Registration PO Box 1139...

Page 57: ...CS 501P PRODUCT REGISTRATION X7503312804 57 01 20 ECHO Incorporated ...

Page 58: ...NOTES CS 501P 58 X7503312804 01 20 ECHO Incorporated NOTES ...

Page 59: ...CS 501P NOTES X7503312804 59 01 20 ECHO Incorporated ...

Page 60: ...ECHO INCORPORATED 400 Oakwood Road Lake Zurich IL 60047 www echo usa com C68515001001 C68515999999 ...

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