SERVICE ELECTRICAL Servicing Mower Blades c CAUTION: Avoid injury! Rotating blades are dangerous. Before adjusting or servicing mower: A • Disconnect spark plug wire(s) or battery negative (-) cable to prevent engine from starting accidentally. • Always wear gloves when handling mower blades or working near blades. Removing Mower Blades B 1. Park machine safely. (See Parking Safely in SAFETY section.) 2. Raise mower deck to gain access to mower blades. If necessary, remove mower deck. • Keep original bevel (A) when grinding. MIF 3. Block mower blade with a piece of wood to prevent it from spinning. • Blade should have 0.40 mm (1/64 in.) cutting edge (B) or less.
• Balance blades before installing. D Balancing Blades c CAUTION: Avoid injury! Blades are sharp. Always wear gloves when handling blades or working near blades. 1. Clean blade. C B A MX16569 4. Loosen and remove nut (A), washer (B), and blade (C). 5. Inspect blades; sharpen, balance or replace blades as necessary. Installing Mower Blades 1. Position mower blade (C) with the cutting edge towards the ground. M61524 2. Align the splined center hole in the blade with the splined spindle shaft (D) and put the blade onto the mower spindle shaft. 2. Put blade on nail in a vise. Turn blade to horizontal position. 3. Check balance. If blade is not balanced, heavy end of blade will drop. 3.
Install washer, with cupped side towards blade, and install nut to secure blade onto splined spindle shaft. 4. Grind bevel of heavy end. Do not change blade bevel. 4. Block mower blade with a piece of wood to prevent spinning and tighten nut: Using 15/16 in. socket, tighten 5/8 in. blade nut to 88 N•m (65 lb-ft). Service Electrical Sharpening Blades c CAUTION: Avoid injury! Blades are sharp. Always wear gloves when handling blades or working near blades. WARNING: Battery posts, terminals and related accessories contain lead and lead components, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling.
Always wear safety eye protection when grinding. • Sharpen blades with grinder, hand file, or electric blade sharpener. Service Electrical - 35