Gravely 994135 - Page 35

EN - 33
6. Level mower deck (see Leveling the
Mower Deck on page 33).
Leveling the Mower Deck
These adjustments should be made on a
level surface with the tires inflated to the
correct air pressure.
Check Blade Level and Pitch
1. Raise mower deck to a 8.3 cm (3 1/4”)
cutting height.
2. Shut off engine. Engage parking brake.
Remove the ignition key.
NOTICE: Place blocks under the bottom
edge of the deck, not under the reinforcement
bar welded along deck face.
3. Place blocks at each corner of the deck to
support the weight of the deck.
4. Turn the blades so the blade ends point
left to right across the width of the deck.
5. Measure the distance between the
ground and cutting edge of the blade on
the left blade (Left position in Figure 31)
and on the right blade (Right position in
Figure 31). Distances should be within
4.7 mm (3/16”). If they are not, raise the
low side of the deck using the height
adjusters on the deck lift brackets (see
Figure 32).
6. After deck is level side to side, check the
deck front to back pitch.
7. Turn the blades so the blade ends point
front to back as shown in Figure 31.
8. Measure the distance between the
ground and the cutting edge of the middle
blade at the front of the deck (Front
position in Figure 31) and between the
ground the cutting edge of the left and
right blades at the rear of the deck (Rear
position in Figure 31).
9. The cutting edge at the front of the deck
(Front position in Figure 31) should be 3.2
mm (1/8") lower than the cutting edges at
the rear of the deck (Rear position in
Figure 31).
10. If measurements are out of range, raise
the low side of the deck using the height
adjusters on the deck lift brackets (see
Figure 32). Be sure to raise the deck
evenly to keep the deck level side to side.
NOTICE: Pitching the front of the blades
lower than the rear provides a balance
between cut quality and the power needed to
cut grass. Certain cutting conditions require
the deck to be pitched with the rear of the
blades lower than the front. Heeling the deck
this way requires more engine power but can
provide better cut quality.
11. Remove the blocks from under the deck.
Adjust Blade Height
See Figure 32.
Level and pitch the mower with the height
adjusters on each deck lift bracket.
1. Loosen jam nut.
2. Turn the adjustment bolt (1) clockwise to
lower the deck or counterclockwise to
raise the deck.
3. Adjust all four corners of the deck to
desired pitch, ensuring that deck is even
side to side and front to back.
4. Tighten jam nut.
Figure 31
Blade Side-to-Side Level
Blade Front-to-Back Pitch
Front
Left
Rear
Right