Echo PB-770 H/T specifications Troubleshooting

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TROUBLESHOOTING

 

PB-770 H/T

 

 

TROUBLESHOOTING

 

 

 

 

 

 

 

 

 

TROUBLESHOOTING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ENGINE PROBLEM TROUBLESHOOTING CHART

 

 

 

 

 

 

 

 

 

 

Problem

Check

Status

Cause

Remedy

 

 

 

 

 

 

 

 

 

 

 

 

Fuel strainer clogged

Clean or replace

 

 

 

Fuel at carburetor

No fuel at carburetor

Fuel line clogged

Clean or replace

 

 

 

 

 

Carburetor

See your Echo dealer

 

 

 

 

 

 

 

 

 

 

 

No fuel at cylinder

Carburetor

See your Echo dealer

 

 

 

 

 

 

 

 

 

 

Fuel at cylinder

 

 

Open choke

 

 

 

Muffler wet with fuel

Fuel Mixture too rich

Clean/replace air filter

 

 

Engine cranks -

 

Adjust carburetor

 

 

 

 

 

 

 

starts hard/

 

 

 

See your Echo dealer

 

 

doesn’t start

 

 

 

 

 

 

Spark at end of

 

Stop switch off

Turn switch to ON

 

 

 

 

 

 

 

No spark

Electrical problem

See your Echo dealer

 

 

 

plug wire

 

 

 

 

Interlock switch

See your Echo dealer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Spark gap incorrect

Adjust to .65mm (0.026 in.)

 

 

 

Spark at plug

No spark

Covered with carbon

Clean or replace

 

 

 

Fouled with fuel

Clean or replace

 

 

 

 

 

 

 

 

 

 

Plug defective

Replace plug

 

 

 

 

 

 

 

 

 

 

Air filter

Air filter dirty

Normal wear

Clean or replace

 

 

 

 

 

 

 

 

 

 

Fuel filter

Fuel filter dirty

Contaminants/residues

Replace

 

 

 

in fuel

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Engine runs,

Fuel vent

Fuel vent plugged

Contaminants/residues

Clean or replace

 

 

in fuel

 

 

but dies or

 

 

 

 

 

 

 

 

 

 

 

does not

Spark Plug

Plug dirty/worn

Normal wear

Clean and adjust or replace

 

 

accelerate

 

 

 

 

 

 

Carburetor

Improper adjustment

Vibration

Adjust

 

 

properly

 

 

 

 

 

 

 

 

Cooling System

Cooling system

Extended operation in

Clean

 

 

 

 

 

 

dirty/plugged

dirty/dusty locations

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Spark Arrestor

Spark arrestor screen

Normal wear

Replace

 

 

 

Screen

plugged

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Engine does

N/A

N/A

Internal engine problem

See your Echo dealer

 

 

not crank

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Engine runs,

Blower pipe

Pipe clogged

Build-up of debris

Unclog

 

 

blower doesn't

 

 

 

 

 

 

 

Pipe loose

Vibration

Tighten

 

 

work or is

 

 

 

 

 

 

 

 

 

 

Pipe damaged

Wear/Misuse

Replace

 

 

weak/uneven

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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.

X7531123904

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© 4/2013 ECHO Inc.

Image 29
Contents Operator’s Manual Burn HazardPB-770 H/T Power Blower PB-770 H/T TABLE OF CONTENTSTABLE OF CONTENTS Warranty Registration ServiceAdditional or Replacement Manuals INTRODUCTIONSAFETY SAFETYManual Safety Symbols and Important Information International SymbolsSAFETY Personal Condition and Safety EquipmentPhysical Condition Eye ProtectionRepetitive Stress Injuries Vibration and ColdRead the Manual EquipmentClear the Work Area Keep a Firm GripEMISSION CONTROL EXHAUST & EVAPORATIVE EMISSION CONTROL EXHAUST & EVAPORATIVEEPA 2010 and Later and/or C.A.R.B. TIER Product Emission Durability Emission Compliance PeriodDESCRIPTION DESCRIPTIONHot Decal Sound Label General Warning DecalDESCRIPTION DESCRIPTION PB-770 H/THot Decal Sound Label General Warning DecalPB-770 H/T CONTENTS CONTENTSInstall Blower Pipes/Stick Handle ASSEMBLYASSEMBLY ASSEMBLY Install Blower PipesA B D G G E H E I J C OPERATION OPERATIONFuel Fuel RequirementsNEVER refuel a unit when the engine is HOT or RUNNING After useStarting Cold Engine 1. Throttle Position / Stop Switch Button1. Throttle Lever 2. ChokeStarting Warm Engine 2. Throttle Position / Stop Switch ButtonStopping Engine 2. Purge BulbOperating Blower Read the Safety Section carefullyTo avoid engine damage due to over-revving, do not block blower pipe 3. PB-770H1. Remove back cushion A from frame Cold Weather Operation2. Install intake cover B on frame over air intake MAINTENANCE MAINTENANCEMaintenance Intervals MAINTENANCE PROCEDURE NOTESFuel Filter Air FilterLevel Foam Pre-FilterCooling System Cleaning GrillSpark Plug Exhaust Port Cleaning Cleaning Cylinder FinsExhaust System Spark Arrestor ScreenIdle Adjustment Carburetor AdjustmentEngine Break-In High Altitude OperationPB-770 H/T TROUBLESHOOTING TROUBLESHOOTINGLong Term Storage Over 30 Days STORAGESTORAGE SPECIFICATIONS SPECIFICATIONSMODEL PB-770H, PB-770TWARRANTY STATEMENTS WARRANTY STATEMENTSECHO LIMITED WARRANTY STATEMENT FOR PRODUCT WARRANTY PERIOD RESIDENTIAL APPLICATIONPURCHASED REPAIR PARTS, SHORT BLOCKS AND ACCESSORIES WARRANTY STATEMENTSATTENTION TWO-STROKE ENGINE POWER PRODUCT OWNERS THIS WARRANTY DOES NOT COVER DAMAGE CAUSED BY4/2013 ECHO Inc PB-770 H/T4/2013 ECHO Inc P05211001001/P05211999999 T P05311001001/P05311999999T P03012001001/P03012999999 P02912001001/P02912999999