Echo PB-250LN specifications Carburetor Adjustment, Engine Break-In, High Altitude Operation

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PB-250LN

MAINTENANCE

 

 

 

 

 

 

 

 

 

Never use a metal tool to scrape carbon from the exhaust port. Do not scratch the cylinder or piston when cleaning the exhaust port. Do not allow carbon particles to enter the cylinder.

4.Inspect heat shield, and replace if damaged.

5.Install heat shield and muffler.

6.Tighten muffler mounting bolts (or nuts) to 60-70 in•lbf (70-80 kgf•cm).

7.Loosely reassemble engine cover.

8.Tighten all screws securely.

9.Attach spark plug lead.

10.Start engine, and warm to operating temperature.

11.Stop engine, and re-tighten mounting bolts (or nuts) to specifications.

Carburetor Adjustment

Engine Break-In

New engines must be operated a minimum duration of two tanks of fuel break-in before carburetor adjustments can be made. During the break-in period your engine performance will increase and 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 performance up to 1,100 feet above sea level (ASL) (96.0 kPa). To maintain proper engine operation and emission compliance above 1,100 feet ASL the carburetor may need to be adjusted by an authorized ECHO service dealer.

If the engine is adjusted for operation above 1,100 feet ASL, the carburetor must be re-adjusted when operating the engine below 1,100 feet ASL, otherwise severe engine damage may result.

Level 2.

Parts Required: None

Note: Every unit is run at the factory and the carburetor is set in compliance with emission regulations. Carburetor adjustments, other than idle speed, must be performed by an authorized ECHO dealer.

Before adjustment make sure that:

•Air filter is clean and properly installed.

•Spark arrestor screen is free of carbon.

•Blower pipes are installed.

X7501183303

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© 3/2013 ECHO Inc.

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Contents Burn Hazard Operator’s ManualTable of Contents Servicing Information IntroductionInternational Symbols SafetyManual Safety Symbols and Important Information Personal Condition and Safety Equipment Repetitive Stress Injuries Vibration and ColdEquipment Product Emission Durability Emission Compliance Period EPA 2010 and Later and/or C.A.R.B. TierDescription Safety Decal Lists important safety precautions Contents Install Blower Pipes AssemblyRemove Blower Pipes OperationHandling Fuel FuelFuel Requirements Mixing Instructions Starting Cold EnginePurge Bulb Starting Warm EngineOperating Blower Stopping EngineRead the Safety Section carefully Skill Levels MaintenanceMaintenance Intervals Fuel Filter Air FilterCooling System Cleaning GrillSpark Plug Spark Arrestor Screen Cleaning Cylinder FinsExhaust Port Cleaning Exhaust SystemHigh Altitude Operation Carburetor AdjustmentEngine Break-In Start engine, run at idle for one minute Engine Problem Troubleshooting Chart TroubleshootingLong Term Storage Over 30 Days StorageModel SpecificationsOWNER’S Responsibility Warranty StatementsWarranty Statements PB-250LN PB-250LN
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