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Echo PB-770 H/T Exhaust System, Cleaning Cylinder Fins, Spark Arrestor Screen, Maintenance, Level

Models: PB-770 H/T

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Cleaning Cylinder Fins

MAINTENANCE	PB-770 H/T

Cleaning Cylinder Fins

1.Disconnect spark plug lead from spark plug.

2.Remove air filter cover.

3.Remove engine cover

4.Clean cylinder fins (A) to allow cooling air to pass freely

5.Install engine cover

6.Install air filter cover.

7.Connect spark plug lead.

A

Exhaust System

Spark Arrestor Screen

Level 2.

Parts Required: Spark Arrestor Screen, Gasket

Carbon deposits in muffler will cause a drop in engine output and overheating. Spark arrestor screen must be checked periodically.

1.Disconnect 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 deposits, be careful not to damage the catalytic element inside muffler.

3.Install spark arrestor screen, gaskets, and cover.

4.Connect spark plug lead.

A

C

B

Exhaust Port Cleaning

Level 2.

Parts Required: As needed: Muffler Gasket

1.Remove spark plug lead from spark plug, and remove engine cover.

2.Place piston at top dead center. Remove muffler (A) and muffler gasket (B).

3.Use a wood or plastic scraping tool to clean deposits from cylinder exhaust port.

A

B

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© 4/2013 ECHO Inc.

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Echo PB-770 H/T Exhaust System, Cleaning Cylinder Fins, Spark Arrestor Screen, Exhaust Port Cleaning, Maintenance, Level

Contents

Operator’s Manual Burn HazardPB-770 H/T Power Blower PB-770 H/T TABLE OF CONTENTSTABLE OF CONTENTS Additional or Replacement Manuals ServiceWarranty Registration INTRODUCTIONManual Safety Symbols and Important Information SAFETYSAFETY International SymbolsPhysical Condition Personal Condition and Safety EquipmentSAFETY Eye ProtectionSAFETY Vibration and ColdRepetitive Stress Injuries PB-770 H/TClear the Work Area EquipmentRead the Manual Keep a Firm GripEPA 2010 and Later and/or C.A.R.B. TIER EMISSION CONTROL EXHAUST & EVAPORATIVEEMISSION CONTROL EXHAUST & EVAPORATIVE Product Emission Durability Emission Compliance PeriodHot Decal Sound Label DESCRIPTIONDESCRIPTION General Warning DecalDESCRIPTION PB-770 H/THot Decal Sound Label PB-770 H/TDESCRIPTION General Warning DecalDESCRIPTION PB-770 H/TPB-770 H/T CONTENTSCONTENTS Install Blower Pipes/Stick Handle ASSEMBLYASSEMBLY PB-770 H/TPB-770 H/T Install Blower PipesASSEMBLY A B D G G E H E I J C ASSEMBLYPB-770 H/T Fuel OPERATIONOPERATION Fuel RequirementsOPERATION After useNEVER refuel a unit when the engine is HOT or RUNNING PB-770 H/T1. Throttle Lever 1. Throttle Position / Stop Switch ButtonStarting Cold Engine 2. ChokeStopping Engine 2. Throttle Position / Stop Switch ButtonStarting Warm Engine 2. Purge BulbTo avoid engine damage due to over-revving, do not block blower pipe Read the Safety Section carefullyOperating Blower 3. PB-770HOPERATION Cold Weather Operation2. Install intake cover B on frame over air intake PB-770 H/TMaintenance Intervals MAINTENANCEMAINTENANCE MAINTENANCE PROCEDURE NOTESLevel Air FilterFuel Filter Foam Pre-FilterCooling System Cleaning GrillSpark Plug MAINTENANCEExhaust System Cleaning Cylinder FinsExhaust Port Cleaning Spark Arrestor ScreenEngine Break-In Carburetor AdjustmentIdle Adjustment High Altitude OperationMAINTENANCE PB-770 H/TPB-770 H/T TROUBLESHOOTINGTROUBLESHOOTING Long Term Storage Over 30 Days STORAGESTORAGE PB-770 H/TPB-770 H/T SPECIFICATIONSSPECIFICATIONS MODELECHO LIMITED WARRANTY STATEMENT FOR WARRANTY STATEMENTSWARRANTY STATEMENTS PRODUCT WARRANTY PERIOD RESIDENTIAL APPLICATIONATTENTION TWO-STROKE ENGINE POWER PRODUCT OWNERS WARRANTY STATEMENTSPURCHASED REPAIR PARTS, SHORT BLOCKS AND ACCESSORIES THIS WARRANTY DOES NOT COVER DAMAGE CAUSED BYPB-770 H/T 4/2013 ECHO IncPB-770 H/T 4/2013 ECHO IncT P03012001001/P03012999999 T P05311001001/P05311999999P05211001001/P05211999999 P02912001001/P02912999999