Correcting Cutting Unit Mismatch - Toro 30605 Operator's Manual

DANGER
If the blade is allowed to wear, a slot will form
between the sail and flat part of the blade.
Eventually a piece of the blade may break
off and be thrown from under the housing,
possibly resulting in serious injury to you or
bystanders.
• Inspect the blade periodically for wear or
damage.
• Never try to straighten a blade that is bent
or weld a broken or cracked blade.
• Replace a worn or damaged blade.
Figure 80
1. Sharpen at 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 Cutter Blade(s) (page
Correcting Cutting Unit
Mismatch
If there is mismatch between the blades on a single cutting
unit, the grass appears streaked when you cut it. You can
correct this problem by making sure that the blades are
straight and all the blades are cutting on the same plane.
1. Using a 1 m (3 ft) long carpenters level, find a level
surface on the shop floor.
2. Raise the height-of-cut to the highest position; refer to
Adjusting the Height of Cut (page
3. Lower the cutting unit onto the flat surface.
4. Remove the covers from the top of the cutting unit.
5. Loosen the flange nut securing the idler pulley to
release the belt tension.
6. Rotate the blades until the ends face forward and
backward.
Note: Measure from the floor to the front tip of the
cutting edge. Remember this dimension.
7. Rotate the same blade so that the opposite end is
forward, and measure again. The difference between
10. To raise or lower the blade, add a shim, Part No.
11. Adjust the idler pulley and install the belt covers.
53).
26).
55
the dimensions must not exceed 3 mm (1/8 inch). If
it does, replace the blade because it is bent. Make sure
to measure all the blades.
8. 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 it is
lower than the outer blades, proceed to step
add shims between the spindle housing and the bottom
of the cutting unit.
9. Remove the bolts, flat washers, lock washers, and nuts
from the outer spindle in the area where you must add
the shims.
3256-24, between the spindle housing and the bottom
of the cutting unit.
Note: 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.
10 and