H37i Maintenance InstructionsReplacing and Repairing69● Inspect the blade surface, especially in formedareas, for cracks. Replace the blade if anycracks are found.WARNINGDO NOT try to straighten a blade that isbent. NEVER weld a broken or crackedblade. ALWAYS replace with a new blade toassure safety.Reinstall the blades following procedure fromSharpen Mower Blades on page 60. If bladesare re placed, always use Walker original equip-ment blades to ensure safety and optimum perfor-mance. The quality and performance of replace-ment blades offered by other manufacturerscannot be guaranteed, they could be dangerous.CAUTIONALWAYS use genuine factory replacementparts. Substitute parts CAN result in prod-uct malfunction and possible injury to theoperator.