Toro 74504TE, Руководство оператора, Страница: 50 / 64

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.
WARNING
A worn or damaged blade can break, and a piece
of the blade could be thrown at you or bystanders,
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 the O
FF
position. 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 73 ).
2. If the edges are not sharp or have nicks, remove and
sharpen the blade; refer to
Sharpening the Blades (page
51) .
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 73 ).
Figure 73
1. Cutting edge 3. Wear/slot forming
2. Curved area 4. Crack
Checking for Bent Blades
1. Disengage the PTO, move the motion-control levers to
the N
EUTRAL
-
LOCK
position, and set the parking brake.
2. Shut off 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.
4. Measure from a level surface to the cutting edge,
position
A , of the blades ( Figure 74 ).
Figure 74
1. Measure here from blade
to hard surface 2. Position A
5. Rotate the opposite ends of the blades forward.
6. Measure from a level surface to the cutting edge of the
blades at the same position as in step
4 above.
Note:
The difference between the dimensions
obtained in steps 4 and 5 must not exceed 3 mm
(1/8 inch).
Note:
If this dimension exceeds 3 mm (1/8 inch),
replace the blade.
WARNING
A blade that is bent or damaged could
break apart and could critically injure you or
bystanders.
• Always replace a bent or damaged blade
with a new blade.
• Do not file or create sharp notches in the
edges or surfaces of the blade.
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