Servicing Mower Blades

CAUTION: Rotating blades are dangerous. Before adjusting or servicing mower:

  • 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

  1. Park machine safely. (See Parking Safely in the SAFETY section).

  2. Raise mower deck to gain access to mower blades. If necessary, remove mower deck.

  3. Block mower blade with a piece of wood to prevent it from spinning.

  4. MXAL47227
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    Loosen and remove nut (A), washer (B), and blade (C).


  5. Inspect blades; sharpen, balance or replace blades as necessary.


Installing Mower Blades

IMPORTANT: On 42 mulching mower, blades are marked right and left on bottom side of each blade. Make sure to install correct blade to right and left sides of deck.

  1. Align the splined center hole in the blade (C) with the splined spindle shaft (G) and put the blade onto the mower spindle shaft with cutting edge toward ground.

  2. Install washer (B), with cupped side towards blade, and install nut (A) to secure blade onto splined spindle shaft.

  3. Block mower blade with a piece of wood to prevent spinning and tighten nut to 88 N·m (65 lb-ft).

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