Adjusting The Blade; Correcting A Mismatch Between Mower Decks - Toro 30643 Operator's Manual

Adjusting the Blade

To ensure proper operation of the mower deck, there must be
a 10 to 16 mm (0.38 to 0.62 inch) clearance between the tips
of the side and center mower-deck blades
1. Raise mower deck so the blades are visible and block
the center deck section so it cannot fall accidentally.
Note: The wing decks must be horizontal to the
center mower deck.
2. Rotate a center and adjoining side blade so the blade
tips are aligned. Measure the distance between the
blade tips (Figure 25).
Note: The distance should be approximately 10 to
16 mm (0.38 to 0.62 inch)
3. To adjust distance, locate adjuster bolt on rear pivot
link of the mower deck
4. Loosen the jam nut on the adjuster bolt.
5. Loosen or tighten the adjuster bolts until you attain a
10 to 16 mm (0.38 to 0.62 inch) clearance, then tighten
the jam nut.
6. Repeat the procedure on the opposite side of the
mower deck.
1. Adjuster bolt
(Figure 25).
Figure 25
(Figure 26).
Figure 26
2. Jam nut
Correcting a Mismatch
Between Mower Decks
Due to differences in grass conditions and the counterbalance
setting of the traction unit, a sample area of grass should
be cut and the appearance checked before formal cutting is
started.
1. Set all mower decks to the desired height-of-cut; refer
to Adjusting the Height-of-Cut (page
2. Check and adjust the front and rear tire pressures to
172 to 207 kPa (25 to 30 psi).
3. Check and adjust all of caster tire pressures to 345 kPa
(50 psi).
4. Check the charge and counterbalance pressures with
the engine at
HIGH IDLE
Note: Adjust the counterbalance to 2,241 kPa (325
psi).
5. Check for bent blades; refer to
Blade (page 65).
6. Cut grass in a test area to determine if all mower decks
are cutting at the same height.
7. If mower-deck adjustments are still needed, find a flat
surface using a 2 m (6 foot) or a longer straight edge.
8. To ease measuring the blade plane, raise the
height-of-cut to 7.6 to 10.1 cm (3 to 4 inches); refer to
Adjusting the Height-of-Cut (page
9. Lower the mower decks onto a flat surface and remove
the covers from the top of the mower decks.
10. Loosen the flange nut, securing the idler pulley, to
release the belt tension on each mower deck.
28
25).
, using hydraulic-test ports.
Checking for a Bent
25).