Correcting A Mower-Deck Mismatch - Toro Groundsmaster 4000 Operator's Manual

Figure 89
1. Cutting edge
2. Curved area
3. Examine the cutting edges of all of the blades
and sharpen the cutting edges if they are dull
or nicked (Figure
Note:
Sharpen only the top of the cutting
edge and maintain the original cutting angle
to ensure sharpness
remains balanced if the same amount of metal
is removed from both cutting edges.
Figure 90
1. Sharpen at the original angle.
3. Wear/slot forming
4. Crack
90).
(Figure 90). The blade
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
Mower Blade(s) (page
Correcting a Mower-Deck
Mismatch
When there is mismatch between the blades on a
single mower deck, the grass appears streaked when
it is cut. You can correct this problem by ensuring that
the blades are straight.
1. Park the machine on a level surface.
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.
4. Loosen the flange nut that secures the idler
pulley to release the belt tension.
5. Rotate the blades until the ends face forward
and rearward and measure from the floor to the
front tip of the cutting edge. Remember this
dimension.
6. 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, as it is bent. Measure
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all the blades.
7. 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
and add shims between the spindle housing and
the bottom of the mower deck.
8. Remove the bolts, flat washers, lock washers,
and nuts from the outer spindle in the area
where you must add the shims.
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:
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any 1 hole location. Use decreasing numbers
of shims in adjacent holes if more than 1
shim is added to any 1 hole location.
9. Adjust the idler pulley and install the belt covers.
69
Removing and Installing the
68).
Do not use more than 3 shims at
29).
8