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To help you decide whether you want to DO-IT-YOURSELF or have the ECHO Dealer do it, each maintenance task has been graded. If the task is not listed see your ECHO dealer for repairs. skIll level Level 1 = Easy to do. Common tools may be required. Level 2 = Moderate difficulty. Some specialized tools may be required. maInTenanCe InTervals Component Maintenance Procedure Skill Level Interval Drive Shaft Grease 1 Every 25 hours of use (1) Gear Housing Grease 1 Every 25 hours of use (1) Tines Inspe