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PB-770 H/T

OPERATION

X7531123904

17

© 4/2013 ECHO Inc.

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. 
Blower housing may contain shredder blades and other sharp edges that can cause serious injuries 
if touched, even if engine is off and blades are not moving.  Wear gloves to protect hands from sharp 
edges and hot surfaces.

Operation of this equipment may create sparks that can start fires. This unit is equipped with a spark 
arrestor to prevent discharge of hot 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.

Fuel

Alternative fuels, such as E-15 (15% ethanol), E-85 (85% ethanol) or any fuels not meeting ECHO 
requirements are NOT approved for use 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.

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.

Two Stroke Oil

 - A two-stroke engine oil meeting ISO-L-EGD (ISO/CD 13738) and J.A.S.O. FD Standards 

must be used. Echo brand premium Power Blend X 

TM

 Universal 2-Stroke Oil meets these standards. Engine 

problems due to inadequate lubrication caused by failure to use an ISO-L-EGD (ISO/CD 13738) and 
J.A.S.O. FD certified oil, such as Echo premium Power Blend X 

TM

, will void the two-stroke engine warranty.

Echo premium Power Blend X 

TM

 Universal 2-Stroke Oil 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.

DO NOT smoke near fuel.

DO NOT allow flames or sparks near fuel.

Summary of Contents for PB-770 H/T

Page 1: ...r or catalytic 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 con...

Page 2: ...ety Equipment 5 Equipment 7 Emission Control Exhaust Evaporative 8 EPA 2010 and Later and or C A R B TIER III 8 Description 9 Contents 13 Assembly 14 Install Blower Pipes Stick Handle 14 Install Blowe...

Page 3: ...r nearest you ask your retailer or call 1 800 432 ECHO 3246 Dealer information is also available on our Web Site When presenting your unit for Warranty service repairs proof of purchase is required Ec...

Page 4: ...r or moderate personal injury if not avoided The enclosed message provides information necessary for the protection of the unit Note This enclosed message provides tips for use care and maintenance of...

Page 5: ...he handles Gloves also reduce the transmission of machine vibration to your hands Breathing Protection Wear a facemask to protect against dust Hearing Protection ECHO recommends wearing hearing protec...

Page 6: ...ed If you experience discomfort redness and swelling of the fingers followed by whitening and loss of feeling consult your physician before further exposing yourself to cold and vibration Repetitive S...

Page 7: ...e handle in one hand with thumb and fingers encircling the handle Keep a Solid Stance Maintain footing and balance at all times Do not stand on slippery uneven or unstable surfaces Do not work in odd...

Page 8: ...n authorized servicing dealer before using EMISSION CONTROL EXHAUST EVAPORATIVE EPA 2010 and Later and or C A R B TIER III The emission control system for the engine is EM engine modification and if t...

Page 9: ...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 See PARTS ORDERING instruction...

Page 10: ...tion and for emergency stopping Move DOWN to open choke run position 9 PURGE BULB Pumping purge bulb before starting engine draws fresh fuel from the fuel tank purging air from the carburetor Pump pur...

Page 11: ...e 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 inf...

Page 12: ...purging air from the carburetor Pump purge bulb until fuel is visible and flows freely in the clear fuel tank return line Pump purge bulb an additional 4 or 5 times 10 SHOULDER HARNESS Used to support...

Page 13: ...1 Straight Pipe w decal ____ 1 Operator s Manual ____ 1 Warranty Registration Card ____ 2 Clamps w screws ____ 1 Emissions Control Warranty Statement ____ 1 Stick Handle ____ 1 Bolt 6x25 ____ 1 Washer...

Page 14: ...c wire through flexible pipe B 4 Assemble flexible pipe B to elbow D on blower and tighten clamp A Note A light lubricant may be used to ease assembly of flexible pipe to blower elbow 5 Loosen wing nu...

Page 15: ...l according to instructions 8 9 PB 770 T Never perform maintenance or assembly procedures with engine running or serious personal injury may result Install Blower Pipes 1 Place guide loop G across cla...

Page 16: ...Tighten knob H hand tight 9 Assemble straight pipe I onto swivel pipe C until you feel light resistance Do not force connection Hold swivel pipe and turn straight pipe clockwise engaging positive lock...

Page 17: ...e 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 det...

Page 18: ...d the 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 hydrocar...

Page 19: ...up to Cold Start Position 3 Purge Bulb Pump purge bulb D until fuel is visible Pump bulb an additional 4 or 5 times 4 Recoil Starter Pull recoil starter handle E until engine fires or a maximum of 5 p...

Page 20: ...s use cold start procedures Stopping Engine PB 770 H 1 Throttle Lever Move throttle lever A to IDLE DETENT position and allow engine to return to idle before shutting off engine 2 Throttle Lever Move...

Page 21: ...nd inspect clean the spark arrestor screen after approximately 40 hours of operation Read the Safety Section carefully To avoid engine damage due to over revving do not block blower pipe 1 Use only du...

Page 22: ...PERATION PB 770 H T Cold Weather Operation 1 Remove back cushion A from frame 2 Install intake cover B on frame over air intake 3 Install back cushion A to frame over intake cover Note Blower performa...

Page 23: ...on tools may be required Level 2 Moderate difficulty Some specialized tools may be required ECHO offers REPOWERTM Maintenance Kits and Parts to make your maintenance job easier Maintenance Intervals M...

Page 24: ...nstalled with the original side out 3 Assemble components in reverse order Fuel Filter Level 1 Fuel is VERY flammable Use extreme care when mixing storing or handling or serious personal injury may re...

Page 25: ...ooling air must pass freely through the cylinder fin area This flow of air carries combustion heat away from the engine Overheating and engine seizure can occur when Air intakes are blocked preventing...

Page 26: ...onnect spark plug lead from spark plug 2 Remove spark arrestor cover A gasket B and spark arrestor screen C from muffler Replace screen if plugged with carbon deposits Note When cleaning carbon deposi...

Page 27: ...d exhaust emissions will stabilize Idle speed can be adjusted as required High Altitude Operation This engine has been factory adjusted to maintain satisfactory starting emission and durability perfor...

Page 28: ...le for 5 minutes operating choke twice to clear air from carburetor chambers 3 Check idle speed and reset if necessary If a tachometer is available idle speed screw A should be set to the specificatio...

Page 29: ...h 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 65mm 0 026 in Clean or replace Cl...

Page 30: ...position 3 Remove accumulation of grease oil dirt and debris from exterior of unit 4 Perform all periodic lubrication and services that are required 5 Tighten all the screws and nuts 6 Drain fuel tan...

Page 31: ...agneto capacitor discharge ignition type Spark Plug NGK BPM 8Y Gap 0 65 mm 0 026 in Fuel Mixed Gasoline and Two stroke Oil Fuel Oil Ratio 50 1 Power Blend XTM ISO L EGD ISO CD 13738 and J A S O M345 F...

Page 32: ...warranty period and arrange for pick up or return of your unit after the repairs have been made For your nearest authorized ECHO servicing dealer call ECHO s Dealer Referral Center at 1 800 432 ECHO...

Page 33: ...A or California Emission Defect Warranty Explanation X G Only use gasoline which contains G Gasohol which contains a 6 7 J 9 is also approved The prescribed mixing ratio of gasoline to oil is listed o...

Page 34: ...34 X7531123904 4 2013 ECHO Inc NOTES PB 770 H T NOTES...

Page 35: ...PB 770 H T NOTES X7531123904 35 4 2013 ECHO Inc...

Page 36: ...36 H P05211001001 P05211999999 H P02912001001 P02912999999 T P05311001001 P05311999999 T P03012001001 P03012999999...

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