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F. Deck leveling Procedure
1. Park the mower on a flat paved surface, engage the
parking brake, shut off the engine, remove the key
from the ignition switch, disconnect the spark plug
wires and using the second foot pedal, lower the
mowing deck into the 4" height of cut position. (The
4" height of cut position is recommended in order
for one to see and obtain a measurement. Any
height of cut position is acceptable as long as a
proper measurement can be taken.)
2. Check the right and left front tire pressure. Adjust as
necessary to 20-25 psi. Tire pressure can affect
blade height by as much as a 1/4”.
3. Check the right and left rear Drive tire pressure.
Adjust as necessary to 8-10 psi.
4. Measure blade-to-ground height at the front tip of
the right blade. To obtain an accurate measure,
align blades in parallel with mower centerline, (i.e.
front to back).
5. Measure blade-to-ground height at the front tip of
the left blade. Be sure to measure at the blade tip
with the blades arranged in proper position.
6. To level the deck, adjust the eyebolt at the left front
of the deck (Point B) so that the blade-to-ground
height at the right front blade tip matches that of the
left front blade tip. This is done by loosening the jam
nuts on the eyebolt and tightening the upper nut to
raise the deck and loosening the nut to lower the
deck. The right front blade tip height is fixed so you
must adjust the left front tip to match it.
7. Measure the blade-to-ground height at the right rear
blade tip. Again be sure to measure at the blade tip
at the rear of the right blade when aligned along the
mower centerline. The blade-to-ground height at
the rear of the blade tip should be 1/8" to 1/4” higher
than the front tip. This is referred to as blade pitch.
The sam height difference should be true for the left
blade, measured front and back.
8. To adjust the blade pitch the deck pitch must be
adjusted. Loosen the inner jam nuts at the rear of
the horizontal threaded rods. Start at Point C to
raise the rear of the deck, tighten the rear outer jam
nut to raise the deck pitch. Adjust the rear jam nut at
Point D to take the “slack out of the threaded rod.
9. The final adjustment would be to take the “slack”
out of the left rear linkage (Point D) by adjusting the
jam nuts on the eyebolt. Loosen the jam nuts and
tighten the upper nut to remove “slack”.
10. In many cases it will be necessary to adjust deck
height using both eyebolt adjustments and pitch
adjustment to achieve the correct blade-to-ground
heights. If you remember that the front right blade
tip adjustment is fixed and you level to that height,
adjusting the decks will be simplified.
11. Once the deck is level one may find that the height
of cut does not match the height of cut indicator. A
final adjustment may be made by lowering or rais
-
ing the height of cut link accordingly. To raise the
deck: remove the shoulder bolt mounting the height
of cut link to the lift handle and reassemble the
shoulder bolt in the lowest of the three holes. To
lower the deck: remove the shoulder bolts mounting
the height of cut link, flip the height of cut link
around and reassemble the shoulder bolts in the
top of the set of three holes and the bottom hole.
(see Fig. 12)
Figure. 12
Eyebolt
Point D
Point C
Jam Nuts
Point B
Eyebolt
Height of Cut LInk
Point A
Main Frame