Hayter Mowers RZT420H - Manual (Page 38)

5. Carefully rotate the blade(s) side to side (Figure 50).
If both measurements are not within 3/16 inch
(5 mm), an adjustment is required; continue with this
procedure.
Figure 50
1. Blades side to side 3. Measure here
2. Outside cutting edges
6. Measure between the outside cutting edges and
the flat surface (Figure 50). If both measurements
are not within 3/16 inch (5 mm), an adjustment is
required; continue with this procedure.
7. Move to the left side of the machine. Loosen, but
do not remove, the rear locking nut on the hanger
bracket (Figure 51).
8. Loosen the side locking nut on the hanger bracket
just enough to allow the eccentric plate to be
adjusted (Figure 51). Use a 3/8 inch drive extension
on a socket wrench to manipulate the eccentric plate.
Use the wrench to reposition the height of the cutter
deck and adjust to the desired height.
9. Stop the deck at the adjusted position and tighten the
side locking nut on the hanger bracket to hold the
new position (Figure 51). Tighten the rear locking
nut on the hanger bracket.
10. Continue leveling the deck by checking the
front-to-rear blade slope; refer to Adjusting the
Front-to-Rear Blade Slope.
3
G005074
1
2
3
4
5
6
Figure 51
1. Hanger bracket 4. Eccentric adjustment plate
2. Rear locking nut 5. Socket wrench hole
3. Side locking nut 6. Socket wrench with 3/8
inch extension
Adjusting the Front-to-Rear
Blade Slope
Check the front-to-rear blade level any time you install
the cutter deck. If the front of the cutter deck is more
than 5/16 inch (7.9 mm) lower than the rear of the
cutter deck, adjust the blade level using the following
instructions:
1. Park the machine on a level surface and disengage
the blade control switch.
2. Move the motion control levers outward to the
park position, stop the engine, remove the key, and
wait for all moving parts to stop before leaving the
operating position.
3. Check the air pressure of all four tyres. If needed,
adjust to the recommended inflation; refer to
Checking the Tyre Pressure in the Drive System
Maintenance section.
4. Check and adjust the side-to-side blade level if you
have not checked the setting; refer to Leveling the
Cutter Deck from Side-to-Side.
5. Set the height-of-cut at position D [3 inch (76 mm)]
and carefully rotate the blades so they are facing
front to rear (Figure 52).
38