Toro 74214 Operator's Manual page 28

Keep the Underside of the Mower Clean
Clean clippings and dirt from the underside of the mower
after each use. If grass and dirt build up inside the mower,
cutting quality will eventually become unsatisfactory.
Blade Maintenance
Maintain a sharp blade throughout the cutting season
because a sharp blade cuts cleanly without tearing or
shredding the grass blades. Tearing and shredding turns
grass brown at the edges, which slows growth and
increases the chance of disease. Check the cutter blades
daily for sharpness, and for any wear or damage. File
down any nicks and sharpen the blades as necessary. If a
blade is damaged or worn, replace it immediately with a
genuine TORO replacement blade.
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