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Figure 86
1. Sharpen at the original angle.
Note: Remove the blades and sharpen them on a
grinder. After sharpening the cutting edges, install the
blade with the anti-scalp cup and blade bolt; refer to
Removing and Installing the Mower Blade(s) (page
Correcting a Mower-Deck
Mismatch
If there is mismatch between the blades, on a single mower
deck, the grass will appear streaked when it is cut. This
problem can be corrected by ensuring that the blades are
straight and all of the blades are cutting on the same plane.
1. Park the machine on a level surface of the shop floor.
2. Raise the height of cut to the highest position; refer to
Adjusting the Height of Cut (page
3. Lower the mower deck onto the flat surface and
remove the covers from the top of the mower deck.
59).
4. Loosen the flange nut securing the idler pulley to
release the belt tension.
5. Rotate the blades until the ends face forward and
backward and measure from the floor to the front tip
of the cutting edge.
Note: Remember this dimension. Then rotate the
same blade so that the opposite end is forward, and
measure again. The difference between the dimensions
must not exceed 3 mm (1/8 inch). If the dimension
exceeds 3 mm (1/8 inch), replace the blade because it
is bent. Make sure to measure all of the blades.
6. Compare the measurements of the outer blades with
the center blade.
Note: The center blade must not be more than 10 mm
(3/8 inch) lower than the outer blades. If the center
blade is more than 10 mm (3/8 inch) lower than the
outer blades, proceed to step
the spindle housing and the bottom of the mower deck.
7. Remove the bolts, flat washers, lock washers, and nuts
from the outer spindle in the area where the shims
must be added.
Note: To raise or lower the blade, add a shim, Part No.
3256-24, between the spindle housing and the bottom
of the mower deck. Continue to check the alignment
of the blades and add shims until the tips of the blades
are within the required dimension.
Important: Do not use more than 3 shims at any 1
hole location. Use decreasing numbers of shims
in adjacent holes if more than 1 shim is added to
any 1 hole location.
8. Adjust the idler pulley and install the belt covers.
60
23).
7
and add shims between
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