Exhaust System, Cleaning Cylinder Fins, Level | Echo PB-770 H/T

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 INTRODUCTION Manual Safety Symbols and Important Information SAFETYSAFETY International Symbols Physical Condition Personal Condition and Safety EquipmentSAFETY Eye Protection Vibration and Cold Repetitive Stress Injuries Clear the Work Area EquipmentRead the Manual Keep a Firm Grip EPA 2010 and Later and/or C.A.R.B. TIER EMISSION CONTROL EXHAUST & EVAPORATIVEEMISSION CONTROL EXHAUST & EVAPORATIVE Product Emission Durability Emission Compliance Period Hot Decal Sound Label DESCRIPTIONDESCRIPTION General Warning Decal DESCRIPTION Hot Decal Sound Label PB-770 H/TDESCRIPTION General Warning Decal DESCRIPTION CONTENTS CONTENTS Install Blower Pipes/Stick Handle ASSEMBLYASSEMBLY Install Blower Pipes ASSEMBLY A B D G G E H E I J C Fuel OPERATIONOPERATION Fuel Requirements After use NEVER refuel a unit when the engine is HOT or RUNNING 1. Throttle Lever 1. Throttle Position / Stop Switch ButtonStarting Cold Engine 2. Choke Stopping Engine 2. Throttle Position / Stop Switch ButtonStarting Warm Engine 2. Purge Bulb To avoid engine damage due to over-revving, do not block blower pipe Read the Safety Section carefullyOperating Blower 3. PB-770H 1. Remove back cushion A from frame Cold Weather Operation2. Install intake cover B on frame over air intake Maintenance Intervals MAINTENANCEMAINTENANCE MAINTENANCE PROCEDURE NOTES Level Air FilterFuel Filter Foam Pre-Filter Cooling System Cleaning GrillSpark Plug Exhaust System Cleaning Cylinder FinsExhaust Port Cleaning Spark Arrestor Screen Engine Break-In Carburetor AdjustmentIdle Adjustment High Altitude Operation MAINTENANCE TROUBLESHOOTING TROUBLESHOOTING Long Term Storage Over 30 Days STORAGESTORAGE MODEL SPECIFICATIONSSPECIFICATIONS PB-770H, PB-770T ECHO LIMITED WARRANTY STATEMENT FOR WARRANTY STATEMENTSWARRANTY STATEMENTS PRODUCT WARRANTY PERIOD RESIDENTIAL APPLICATION ATTENTION TWO-STROKE ENGINE POWER PRODUCT OWNERS WARRANTY STATEMENTSPURCHASED REPAIR PARTS, SHORT BLOCKS AND ACCESSORIES THIS WARRANTY DOES NOT COVER DAMAGE CAUSED BY PB-770 H/T 4/2013 ECHO Inc PB-770 H/T T P03012001001/P03012999999 T P05311001001/P05311999999P05211001001/P05211999999 P02912001001/P02912999999