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Maintenance
Figure 30
1. Valve stem
Mower Maintenance
Servicing the Cutting Blades
Service Interval: Before each use or daily
Maintain sharp blades throughout the cutting season
because sharp blades cut 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 Exmark
replacement blade. For convenient sharpening and
replacement, you may want to keep extra blades on
hand.
WARNING
A worn or damaged blade can break, and a piece
of the blade could be thrown into the operator’s
or bystander’s area, resulting in serious personal
injury or death.
• Inspect the blade periodically for wear or
damage.
• Replace a worn or damaged blade.
Before Inspecting or Servicing the
Blades
Park the machine on a level surface, disengage the
blade control switch, and move the motion control
levers outward to the neutral position and engage
parking brake. Stop the engine, remove the key, and
disconnect the spark plug wire(s) from the spark
plug(s).
Inspecting the Blades
1. Inspect the cutting edges (Figure 31). If the edges
are not sharp or have nicks, remove and sharpen
the blades; refer to Sharpening the Blades.
2. Inspect the blades, especially the curved area. If
you notice any damage, wear, or a slot forming in
this area (item 3 in
Figure 31), immediately install
a new blade.
Figure 31
1. Cutting edge 3. Wear/slot forming
2. Curved area
Checking for Bent Blades
1. Rotate the blades until the ends face forward and
backward (Figure 32 and Figure 33). Measure
from a level surface to the cutting edge, of the
blades. Note this dimension.
Figure 32
48 and 52 Inch Deck
1. Blades front to rear
2. Measure here
40