Mower Deck
Maintenance
Servicing the Blades
Service Interval:
Before each use or daily
Note:
Determine the left and right sides of the machine
from the normal operating position.
To ensure a superior quality of cut, keep the blades sharp. For
convenient sharpening and replacement, keep extra blades.
DANGER
Worn or damaged blades 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 worn or damaged blades.
Inspecting the Blades
1.
Remove the mower; refer to Removing the Mower.
2.
Inspect the cutting edges (Figure 41). If the edges are
not sharp or have nicks, remove the blades and sharpen
them; refer to Sharpening the Blades.
Figure 41
1.
Blade driver
5.
Spacer
2.
Shear pin (2)
6.
Washer
3.
Blade
7.
Bolt
4.
Bent edge
3.
Inspect the blades, especially the bent edges (Figure 41).
If you notice any wear or damage in this area,
immediately install new blades.
4.
If the shear pins are broken, replace them immediately
(Figure 41).
Important:
If the shear pins are broken, the mower belt
may be damaged. Inspect the belt; refer to Adjusting
the Blade Drive Belt.
Removing the Blades
1.
Remove the mower; refer to Removing the Mower.
2.
Carefully tip the mower over.
3.
Remove the bolts, washers, and blades (Figure 41).
Wedge a block of wood between each blade and the
mower to lock the blade when you are removing each
bolt.
Note:
The right blade has a left-hand threaded bolt.
4.
Inspect all parts; replace any that are worn or damaged.
Sharpening the Blades
1.
Use a file to sharpen the cutting edge at both ends of
each blade (Figure 42).
Note:
Maintain the original angle. The blade retains
its balance if you remove the same amount of material
from both cutting edges.
Figure 42
1.
Sharpen at original angle
2.
Check the balance of each blade by putting it on a
blade balancer (Figure 43).
Note:
If the blade stays in a horizontal position, the
blade is balanced and can be used. If the blade is not
balanced, file some metal off the back side of the blade.
Repeat this step until each blade is balanced.
Figure 43
1.
Blade
2.
Balancer
Installing the Blades
1.
Install the blades, washers, and blade bolts (Figure 41).
Important:
The bent edges of the blades must be
pointing toward the top of the mower to ensure
proper cutting.
2.
Position the blades 90 degrees to each other (Figure 44).
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