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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, 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 blades periodically for wear or
damage.
• Replace a worn or damaged blade.
Preparing to Inspect or Service the
Blades
Park the machine on a level surface, disengage the blades, and
set the parking brake.
Turn the ignition key to the Off position.
Remove the key and disconnect the spark plug wires from
the spark plugs.
Inspecting the Blades
1. Inspect the cutting edges (Figure 49).
Note: If the edges are not sharp or have nicks, remove
and sharpen the blades. Refer to Sharpening the Blades
(page 38).
Figure 49
1. Cutting Edge
2. Sail
2. Inspect the blades, especially the curved area (Figure
49). If you notice any cracks, wear, or a slot forming
in this area (item 3. in Figure 49), 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 50).
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
steps 3 and 4 must not exceed 3 mm (1/8 inch). If this
dimension exceeds 3 mm (1/8 inch), the blade is bent
and must be replaced; refer to Removing the Blades
(page 37) and Installing the Blades (page 38).
WARNING
A blade that is bent or damaged could break
apart and could seriously injure or kill you or
bystanders.
• Always replace bent or damaged blade
with a new blade.
• Never file or create sharp notches in the
edges or surfaces of blade.
Removing the Blades
Blades must be replaced if a solid object is hit, if the blade is
out of balance, or is bent. To ensure optimum performance
and continued safety conformance of the machine, use
genuine Toro replacement blades. Replacement blades made
by other manufacturers may result in non-conformance with
safety standards.
1. Hold the blade end using a rag or thickly-padded glove.
2. Remove the blade bolt, curved washer, blade stiffener,
and blade from the spindle (Figure 51).
37
Figure 50
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