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Mower Deck
Maintenance
Servicing the Cutting Blades
To ensure a superior quality of cut, keep the blades
sharp. For convenient sharpening and replacement, you
may want to keep extra blades on hand.
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 blades 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 blades
and set the parking brake. Turn the ignition key to off.
Remove the key and disconnect the spark plug wires
from the spark plugs.
Inspecting the Blades
Service Interval: Before each use or daily
1. Inspect the cutting edges (Figure 53). If the edges
are not sharp or have nicks, remove and sharpen the
blades. Refer to Sharpening the Blades.
Figure 53
1. Cutting Edge
2. Sail
2. Inspect the blades, especially the curved area
(Figure 53). If you notice any cracks, wear, or a
slot forming in this area (item 3 in Figure 53),
immediately install a new blade.
3. Wear/slot forming in
curved area
4. Crack in the curved area
Checking for Bent Blades
1. Disengage the PTO, move the motion control levers
to the neutral locked position and set the parking
brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Rotate the blades until the ends face forward and
backward. Measure from a level surface to the
cutting edge, position A, of the blades (Figure 54
). Note this dimension. For 36 inch mower decks
use Figure 55.
40 inch, 48 inch, and 52 inch Mower Deck shown
1. Measure here from blade
to hard surface
36 inch Mower Deck shown
4. Rotate the opposite ends of the blades forward.
5. Measure from a level surface to the cutting edge of
the blades at the same position as in step 3 above.
The difference between the dimensions obtained in
38
Figure 54
2. Position A
Figure 55
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