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Mower Deck
Maintenance
Blade Safety
A worn or damaged blade can break, and a piece of
the blade could be thrown toward you or bystanders,
resulting in serious personal injury or death.
•
Inspect the blades periodically for wear or damage.
•
Use care when checking the blades. Wrap the
blades or wear gloves, and use caution when
servicing the blades. Only replace or sharpen the
blades; never straighten or weld them.
•
Always inspect the machine to ensure that the
blades and blade bolts are not worn or damaged.
Replace worn or damaged blades and bolts in sets
to preserve balance.
•
On multi-bladed machines, take care as rotating 1
blade can cause other blades to rotate.
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.
Before Inspecting or Servicing the
Blades
1.
Park the machine on a level surface, disengage
the PTO, and engage the parking brake.
2.
Shut off the engine, 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
2.
If the edges are not sharp or have nicks, remove
and sharpen the blade; refer to
Blades (page
54).
3.
Inspect the blades, especially in the curved area.
4.
If you notice any cracks, wear, or a slot forming
in this area, immediately install a new blade
(Figure
87).
(Figure
87).
Sharpening the
1. Cutting edge
2. Curved area
Checking for Bent Blades
1.
Rotate the blades until the ends face forward
and backward.
2.
Measure from a level surface to the cutting
edge, position A, of the blades
1. Measure here from blade
to hard surface
3.
Rotate the opposite ends of the blades forward.
4.
Measure from a level surface to the cutting edge
of the blades at the same position as in step
above.
Note:
The difference between the dimensions
obtained in steps
(1/8 inch).
Note:
If this dimension exceeds 3 mm
(1/8 inch), replace the blade.
53
Figure 87
3. Wear/slot forming
4. Crack
(Figure
88).
Figure 88
2. Position A
2
and
3
must not exceed 3 mm
g006530
g000975
2
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