6EQUIPMENT• Check unit for loose/missing nuts, bolts and screws. Tighten and/or replace as needed.• Inspect fuel lines, tank and area around carburetor for fuel leaks. DO NOT operate unit if leaks are found.• Inspect shield for damage and ensure that the cut-off knife is securely in place. Replace if either is damaged ormissing.• Check that the cutting attachment is firmly attached and in safe operating condition.• Check that front (loop) handle and optional shoulder/waist harness are adjusted for safe, comfortable operation. SeeAssembly for proper adjustment.• Have repairs done only by an authorized ECHO Service Dealer.WARNING DANGERUse only ECHO approved attachments. Serious injury may result from the use of a non approved attachment combi-nation. ECHO, INC. will not be responsible for the failure of cutting devices, attachments or accessories which havenot been tested and approved by ECHO. Read and comply with all safety instructions listed in this manual and safetymanual.EMISSION C ONTROLEPA Phase 2 GT-251EThe emission control system for this engine is EM (EngineModification).Emission Control Label located on Engine (EXAMPLE ONLY, information on label varies by FAMILY).IMPORTANT ENGINE INFORMATIONENGINE FAMILY: 5EHXS.0254ED DISPLACEMENT: 25.4 CCEMISSION COMPLIANCE PERIOD : 300 HRS.THIS ENGINE MEETS U.S. EPA PHASE 2 EMISSION REGULATIONSFOR SMALL NONROAD ENGINES. REFER TO OWNER'S MANUALFOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.PRODUCT EMISSION DURABILITYThe 300 hour emission durability compliance period is the time span selected by the manufacturer certifying theengine emissions output meets applicable emissions regulations, provided that approved maintenance proceduresare followed as listed in the Maintenance Section of this manual.IMPORTANT ENGINE INFORMATIONENGINE FAMILY: 5EHXS.0254KD DISPLACEMENT: 25.4 CCEMISSION COMPLIANCE PERIOD : 300 HRS.THIS ENGINE MEETS U.S. EPA PH2 AND 2005 - 2006CALIFORNIA EMISSION REGULATIONS FOR SORES.REFER TO OWNER'S MANUAL FOR MAINTENANCESPECIFICATIONS AND ADJUSTMENTS.California Tier II GT-251The emission control system for these engines is EM/TWC (Engine Modification and Catalyst).