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X7702242900

© 1/2015 ECHO Inc.

TROUBLESHOOTING

HC-2420/3020

TROUBLESHOOTING

Fuel vapors are extremely flammable and may cause fire and/or explosion. Never test for ignition 
spark by grounding spark plug near cylinder plug hole, otherwise serious personal injury may 
result.

ENGINE PROBLEM TROUBLESHOOTING CHART

Problem Check 

Status 

Cause 

Remedy 

Engine cranks - 
starts hard/ 
doesn’t start 

Fuel at carburetor

No fuel at carburetor

Fuel strainer clogged
Fuel line clogged 
Carburetor 

Clean or replace
Clean or replace
See your Echo dealer 

Fuel at cylinder

No fuel at cylinder 

Carburetor 

See your Echo dealer 

Muffler wet with fuel 

Fuel Mixture too rich 

OPEN choke 
Clean/replace air filter 
Adjust carburetor 
See your Echo dealer 

Spark at end of 
plug wire

No spark

Stop switch OFF 
Electrical problem
Interlock switch

Turn switch to ON 
See your Echo dealer 
See your Echo dealer 

Spark at plug

No spark

Spark gap incorrect

Covered with carbon 
Fouled with fuel
Plug defective

Adjust to 0.65mm 
(0.026 in.)
Clean or replace 
Clean or replace 
Replace plug 

Engine runs, 
but dies or 
does not 
accelerate 
properly 

Air filter 

Air filter dirty

Normal wear 

Clean or replace 

Fuel filter 

Fuel filter dirty

Contaminants/residues 
in fuel 

Replace 

Fuel vent

Fuel vent plugged 

Contaminants/residues 
in fuel 

Clean or replace 

Spark Plug 

Plug dirty/worn

Normal wear 

Clean and adjust or replace 

Carburetor Improper 

adjustment 

Vibration

Adjust 

Cooling System 

Cooling system 
dirty/plugged 

Extended operation in 
dirty/dusty locations

Clean 

Spark Arrestor 
Screen 

Spark arrestor screen 
plugged 

Normal wear 

Replace 

Engine does 
not crank 

N/A 

N/A 

Internal engine problem  See your Echo dealer 

Summary of Contents for HC-2420

Page 1: ...lytic 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 che...

Page 2: ...ment 9 Emission Control Exhaust Evaporative 10 EPA 2010 and Later and or C A R B TIER III 10 Description 11 Contents 13 Assembly 14 Remove Blade Guard 14 Install Blade Guard 15 Operation 16 Fuel 16 St...

Page 3: ...ture reference write them in the space provided below Model No _________________ SN ___________________ Service Service of this product during the warranty period must be performed by an Authorized EC...

Page 4: ...ols 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 avo...

Page 5: ...justment Idle speed Emergency Stop Hot Surface Avoid all power lines This unit is not insulated against electrical current Do not operate closer than 15 M 50 ft from electrical hazard Wear hand and fo...

Page 6: ...ip on the handles Gloves also provide protection against cuts and scratches cold environments and reduce the transmission of machine vibration to your hands Hearing Ear Protection ECHO recommends wear...

Page 7: ...ty 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...

Page 8: ...nd force with which you do the repetitive movement Do exercise to strengthen the hand and arm muscles Immediately stop using all power equipment and consult a doctor if you feel tingling numbness or p...

Page 9: ...ng nuts bolts and screws Tighten and or replace as needed Check that the cutting attachment is firmly attached and in safe operating condition Dull loose or damaged blades should not be used Moving pa...

Page 10: ...The fuel tank fuel line emission control system is EVAP evaporative emissions Evaporative emissions for California models are only applicable to fuel tanks An Emission Control Label is located on the...

Page 11: ...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 See PARTS ORDERING instructions for specific i...

Page 12: ...er is located on the front of the air cleaner case Move choke lever to COLD START to close the choke for Cold Starting Move choke lever to RUN position to open choke 10 PURGE BULB Pumping purge bulb b...

Page 13: ...kaging 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...

Page 14: ...otect hands Follow blade bolt adjustment instructions exactly Failure to do so could result in damage to blades or gearbox Remove Blade Guard 1 Move stop switch to STOP position 2 Disconnect spark plu...

Page 15: ...ts in order to keep hands at a safe distance from sharp blades 3 Remove correct number of lock nuts A necessary to install blade guard Assure blade bolts B are tightened securely Blade guard must be i...

Page 16: ...nes 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 alc...

Page 17: ...t 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...

Page 18: ...port handle securely with one hand and pull the recoil starter handle D until engine fires or 5 pulls maximum 5 Choke After engine fires or 5 pulls move choke B to the RUN open position Restart engine...

Page 19: ...e Bulb Pump purge bulb C until fuel is visible and flows freely in the clear fuel tank return line Pump bulb an additional 4 or 5 times 3 Recoil Starter Place the unit on a flat clear area Grip the su...

Page 20: ...ss handle rotation release button B to unlock throttle handle rotation Note Throttle trigger must be at idle position in order to press the rotation lock button 3 Rotate throttle handle C right or lef...

Page 21: ...ry Avoid touching blades whenever possible and always wear gloves to protect hands 1 Always grip support handle with right hand and throttle handle with left hand 2 Hold trimmer firmly and squeeze thr...

Page 22: ...offers REPOWERTM Maintenance Kits and Parts to make your maintenance job easier Maintenance Intervals MAINTENANCE PROCEDURE LETTER CODES I INSPECT R REPLACE C CLEAN IMPORTANT NOTE Time intervals show...

Page 23: ...uel is VERY flammable Use extreme care when mixing storing or handling or serious personal injury may result 1 Use a clean rag to remove loose dirt from around fuel cap and empty fuel tank 2 Use the f...

Page 24: ...flow of air carries combustion heat away from the engine Overheating and engine seizure can occur when Air intakes are blocked preventing cooling air from reaching the cylinder Dust and grass build u...

Page 25: ...its from cylinder exhaust port 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...

Page 26: ...feet ASL the carburetor must be re adjusted when operating the engine below 1 100 feet ASL otherwise severe engine damage may result Level 2 Note Every unit is run at the factory and the carburetor i...

Page 27: ...spark plug 3 Brush loose debris from blade and coat both sides of blade with the 50 50 cleaning mixture 4 Allow cleaning mixture to soften the remaining gummy residue then wipe it from the blade 5 Ap...

Page 28: ...y lead to severe personal injury Avoid touching blades whenever possible and always wear gloves to protect hands 1 Move stop switch to STOP position 2 Disconnect spark plug wire 3 Remove blade guard i...

Page 29: ...ith extensions when tightening blade screws and blade lock nuts to keep hands at a safe distance from sharp blades 1 Tighten blade screws A securely 2 Hold blade screws A to prevent turning and tighte...

Page 30: ...rk at end of plug wire No spark Stop switch OFF Electrical problem Interlock switch Turn switch to ON See your Echo dealer See your Echo dealer Spark at plug No spark Spark gap incorrect Covered with...

Page 31: ...all periodic lubrication and services that are required 5 Apply clean oil to the entire length of the blade Be certain the blade bolts are lubricated 6 Install blade cover on blades 7 Tighten all the...

Page 32: ...Ratio 50 1 Power Blend XTM or ECHO Red Armor ISO L EGD ISO CD 13738 and J A S O M345 FD two stroke air cooled engine oil Gasoline Use 89 Octane unleaded Do not use fuel containing methyl alcohol more...

Page 33: ...ANTY All units for homeowner or non income producing use will be covered by this limited warranty for YH HDUV from date of purchase EXCEPTIONS RU WZR VWURNH HQJLQH SRZHUHG SURGXFWV WKH HOHFWURQLF LJQL...

Page 34: ...LPSURSHUO PDLQWDLQHG UHPRYHG FXWWLQJ VKLHOG RU UHPRYHG GDPDJHG DLU OWHU Damage caused by dirt pressure or steam cleaning the unit salt water corrosion rust varnish abrasives and moisture HIHFWV PDOIXQ...

Page 35: ...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 prod...

Page 36: ...36 X7702242900 1 2015 ECHO Inc NOTES HC 2420 3020 NOTES...

Page 37: ...HC 2420 3020 NOTES X7702242900 37 1 2015 ECHO Inc...

Page 38: ...38 X7702242900 1 2015 ECHO Inc NOTES HC 2420 3020...

Page 39: ...HC 2420 3020 NOTES X7702242900 39 1 2015 ECHO Inc...

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