Echo SRM-225I manual Sharpening metal blades

Page 27

Grass Trimmer/Brush Cutter 27

Operator's Manual

sharpening metal blades

Three styles of metal blades are approved for use on the ECHO Brush Cutter. The 8-tooth blade can be sharpened during normal mainte- nance. The clearing blade and 80 tooth blade require professional service.

Before sharpening, CLOSELY inspect blade for cracks (look at the bottom of each tooth and the center mounting hole closely), missing teeth and bending. If ANY of these problems are discovered, replace the blade.

When sharpening a blade, always remove the same amount of materials from each tooth to maintain balance. A blade that is not balanced will cause unsafe handling due to vibration and can result in blade failure.

Tool required: Flat file (preferred). Electric grinder if special care is used. Round (rat tail) file for gullet (radius).

1.File each tooth at a 30 degree angle a specific number of times, eg. 4 strokes per tooth. Work your way around the blade until all teeth are sharp.

2.DO NOT file the 'gullet' (radius) of the tooth with the flat file.

The radius must remain. A sharp corner will lead to a crack and blade failure.

IMPORTANT

If an electric grinder is used, use care not to overheat teeth, do not allow tips/tooth to glow red or turn blue. DO NOT place blade in cooling water. This will change the temper of the blade and could result in blade failure.

3.After sharpening teeth, check each tooth radius for evidence of a square (sharp) corner. Use the round (rat tail) file to renew the radius.

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Contents Grass Trimmer/Brush Cutter Operators manual Safety manualTable of Contents IntroductionGrass Trimmer /Brush Cutter Operator s Manual Safety Manual safety symbols and important informationInternational symbols Personal condition and safety equipmentHearing 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 Hot Decal near muffler Shaft Decal Grass Trimmer /Brush Cutter Operator s Manual DescriptionPage Assembly Plastic shield installation ContentsRemove nylon line head Nylon line head installationNylon line replacement To advance trimmer lineFront handle installation Grass Trimmer/Brush Cutter Operators ManualOperation Brush/Clearing Blades Require Operation with bladesPreparing the Trimmer/Brush Cutter for Blade Use Grass/Weed Blades RequireChoosing the Correct Blade Fuel Requirements FuelHandling Fuel Purge Bulb Starting cold engineGrass Trimmer/Brush Cutter 17 Operators Manual Starting warm engineStopping engine Maintenance Maintenance intervalsSkill levels Fuel filter Air filterCooling system Spark plugGrass Trimmer/Brush Cutter 21 Operators Manual Exhaust systemSpark Arrestor Screen Exhaust Port Cleaning Carburetor adjustment Engine Break-InHigh Altitude Operation Gear Housing LubricationDrive Shaft Nylon line replacement Page Sharpening metal blades Engine Problem Troubleshooting Chart TroubleshootingStorage Long Term Storage over 30 daysModel SRM-225 SpecificationsExceptions Warranty Statements99922201032 12/03/09 01/2010 Page Grass Trimmer/Brush Cutter 35 Operators Manual Echo consumer product support ServiceWarranty registration Additional or replacement manuals Servicing Information parts/serial number