Spark Plug, Cooling System, Cleaning Grill, Level | Echo PB-770 H/T

Spark Plug

PB-770 H/T	MAINTENANCE

Spark Plug

Level 2.

Parts Required: REPOWERTM Tune-Up Kit

Use only NGK BPM-8Y spark plug (BPMR-8Y in Canada) otherwise severe engine damage may occur.

1.Remove spark plug and check for fouling, worn and rounded center electrode.

0.65mm

(0.026 in.)

2.Clean the plug or replace with a new one. DO NOT sand blast to clean. Remaining sand will damage engine.

3.Adjust spark plug gap by bending outer electrode.

4.Tighten spark plug to 150-170 kgf • cm (130-150 in • lbf).

Cooling System

Level 2.

Parts Required: None if you are careful.

To maintain proper engine operating temperatures, cooling 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 cooling air from reaching the cylinder.

•Dust and grass build up on the outside of the cylinder. This build up insulates the engine and prevents the heat from leaving.

Removal of cooling passage blockages or cleaning of cooling fins is considered “Normal Maintenance.” Any failure attributed to lack of maintenance is not warranted.

Cleaning Grill

1. Brush accumulated debris from intake grill between backpack frame and blower housing.

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© 4/2013 ECHO Inc.

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Echo PB-770 H/T specifications Spark Plug, Cooling System, Cleaning Grill, Maintenance, Level

Contents

PB-770 H/T Power Blower Burn HazardOperator’s Manual TABLE OF CONTENTS TABLE OF CONTENTSPB-770 H/T Warranty Registration ServiceAdditional or Replacement Manuals INTRODUCTION SAFETY SAFETYManual Safety Symbols and Important Information International Symbols SAFETY Personal Condition and Safety EquipmentPhysical Condition Eye Protection Repetitive Stress Injuries Vibration and Cold Read the Manual EquipmentClear the Work Area Keep a Firm Grip EMISSION CONTROL EXHAUST & EVAPORATIVE EMISSION CONTROL EXHAUST & EVAPORATIVEEPA 2010 and Later and/or C.A.R.B. TIER Product Emission Durability Emission Compliance Period DESCRIPTION DESCRIPTIONHot Decal Sound Label General Warning Decal DESCRIPTION DESCRIPTION PB-770 H/THot Decal Sound Label General Warning Decal PB-770 H/T CONTENTS CONTENTS ASSEMBLY ASSEMBLYInstall Blower Pipes/Stick Handle ASSEMBLY Install Blower Pipes A B D G G E H E I J C OPERATION OPERATIONFuel Fuel Requirements NEVER refuel a unit when the engine is HOT or RUNNING After use Starting Cold Engine 1. Throttle Position / Stop Switch Button1. Throttle Lever 2. Choke Starting Warm Engine 2. Throttle Position / Stop Switch ButtonStopping Engine 2. Purge Bulb Operating Blower Read the Safety Section carefullyTo avoid engine damage due to over-revving, do not block blower pipe 3. PB-770H 2. Install intake cover B on frame over air intake Cold Weather Operation1. Remove back cushion A from frame MAINTENANCE MAINTENANCEMaintenance Intervals MAINTENANCE PROCEDURE NOTES Fuel Filter Air FilterLevel Foam Pre-Filter Spark Plug Cleaning GrillCooling System Exhaust Port Cleaning Cleaning Cylinder FinsExhaust System Spark Arrestor Screen Idle Adjustment Carburetor AdjustmentEngine Break-In High Altitude Operation PB-770 H/T TROUBLESHOOTING TROUBLESHOOTING STORAGE STORAGELong Term Storage Over 30 Days SPECIFICATIONS SPECIFICATIONSMODEL PB-770H, PB-770T WARRANTY STATEMENTS WARRANTY STATEMENTSECHO LIMITED WARRANTY STATEMENT FOR PRODUCT WARRANTY PERIOD RESIDENTIAL APPLICATION PURCHASED REPAIR PARTS, SHORT BLOCKS AND ACCESSORIES WARRANTY STATEMENTSATTENTION TWO-STROKE ENGINE POWER PRODUCT OWNERS THIS WARRANTY DOES NOT COVER DAMAGE CAUSED BY 4/2013 ECHO Inc PB-770 H/T 4/2013 ECHO Inc P05211001001/P05211999999 T P05311001001/P05311999999T P03012001001/P03012999999 P02912001001/P02912999999