Echo SRM - 225U manual Carburetor adjustment, Engine Break-In, High Altitude Operation

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Grass Trimmer/Brush Cutter 27

Operator's Manual

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 ad- justed by an authorized ECHO service dealer.

Important

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.

Tools required: Screwdriver, Tachometer (ECHO P/N 99051130017).

Parts required: None.

NOTE

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

1.Check idle speed and reset if necessary. If a tachometer is avail- able, idle speed screw (A) should be set to the specifications found on page 34 "Specifications" of this manual. Turn idle screw (A) clockwise to increase idle speed; counter clockwise to decrease idle speed.

WARNING

When carburetor adjustment is completed, the cutting attachment should not move at idle, otherwise serious personal injury may result.

A

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Contents Grass Trimmer/Brush Cutter Operators manual Safety manualTable of Contents IntroductionSafety Manual safety symbols and important information International symbolsPersonal condition and safety equipment Hearing Protection Physical ConditionEye Protection Hand ProtectionKeep a Firm Grip Repetitive Stress InjuriesRead the Manuals Clear the Work AreaEquipment Emission Control exhaust & evaporativeEPA 2010 and Later and/or C.A.R.B. Tier Shaft Decal DescriptionPage Contents Assembly Plastic shield installation Nylon line head installationNylon line operation Remove nylon line head Blade installationInstall Metal Shield To advance trimmer lineInstall Blade Throttle linkage and ignition leads Handle installationBalance and adjust unit Blade selection OperationPage Fuel Requirements FuelMixing Instructions Purge Bulb Starting cold engineStarting warm engine Maintenance Stopping engineSkill levels Level USE Hours Maintenance intervalsFuel filter Air filterCooling system Spark plugSpark Arrestor Screen Exhaust systemExhaust Port Cleaning Carburetor adjustment Engine Break-InHigh Altitude Operation Gear Housing LubricationDrive Shaft Nylon line replacement Page Sharpening metal blades Engine Problem Troubleshooting Chart TroubleshootingLong Term Storage over 30 days StorageModel SRM-225U SpecificationsExceptions Warranty Statements99922201032 12/03/09 01/2010 Page Grass Trimmer/Brush Cutter 39 Operators Manual Echo consumer product support ServiceWarranty registration Additional or replacement manuals Servicing Information parts/serial number