Ryobi RY401110 Operation Manual - Page 16

MAINTENANCE WARNING: Before performing any maintenance or cleaning the lawn mower, make sure the mower blades come to a complete stop and the batteries and start key are removed to avoid accidental starting and possible serious personal injury. WARNING: Do not at any time let brake fluids, gasoline, petroleumbased products, penetrating oils, etc., come in contact with plastic parts. Chemicals can damage, weaken, or destroy plastic which can result in serious personal injury. WARNING: Always wear eye protection with side shields marked to comply with ANSI Z87.1. Failure to do so could result in objects being thrown into your eyes resulting in possible serious injury. WARNING: When servicing, use only authorized replacement parts. Use of any other parts can create a hazard or cause product damage. WARNING: Never use a hose, water, or any liquids to clean or rinse off the lawn mower. Corrosive liquids, water, fertilizers, and chemicals used to treat lawns can enter the lawn mower and/or battery compartment and damage electronic components and/or the battery pack, which can result in a short circuit, increased risk of fire, and serious personal injury. Remove any buildup of grass and leaves on or around the mower housing and/or underneath the mower deck. Wipe the mower clean with a dry cloth occasionally. NOTICE: Periodically inspect the entire product for damaged, missing, or loose parts such as screws, nuts, bolts, caps, etc. Tighten securely all fasteners and caps and do not operate this product until all missing or damaged parts are replaced. Please contact customer service or an authorized service center for assistance. GENERAL MAINTENANCE Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from various types of commercial solvents and may be damaged by their use. Use clean cloths to remove dirt, dust, oil, grease, etc. LUBRICATION All of the bearings in this product are lubricated with a sufficient amount of high grade lubricant for the life of the unit under normal operating conditions. Therefore, no further bearing lubrication is required. WARNING: Always protect hands by wearing heavy gloves and/or wrapping the cutting edges of the blade with rags and other material when performing blade maintenance. Contact with the blade could result in serious personal injury. REPLACING THE CUTTING BLADE See Figures 15 - 16. NOTE: Only use authorized replacement blades.  Stop the motor and remove the start key. Allow blade to come to a complete stop.  Remove the battery pack from the battery port.  Turn the mower on its side.  Wedge a block of wood between the blade and mower deck to prevent the blade from turning.  Loosen the blade nut by turning it counterclockwise (as viewed from bottom of mower) using a 15 mm wrench or socket (not provided).  Remove the blade nut, spacer, blade insulator, and blade.  Place the new blade on the shaft against the blade posts. Ensure blade is properly seated with shaft going through center blade hole and the two blade posts inserted into their respective holes on the blade. Make sure it is installed with the curved ends pointing up toward the mower deck and not down toward the ground. When seated properly, the blade should be flat.  Replace the blade insulator and spacer, then thread the blade nut on the shaft and finger tighten. NOTE: Make certain all parts are replaced in the exact order in which they were removed.  Torque the blade nut down clockwise using a torque wrench (not provided) to ensure the bolt is properly tightened. The recommended torque for the blade nut is 310 - 360 in.lbs. 12 - English