Gravely Pro-Stance 36 CARB Owner's/Operator's Manual page 35

Check Blade Level and Pitch
1. Raise mower deck to a 3.75" (90)/2.75"
(70) 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 30)
and on the right blade (Right position in
Figure 30). Distances should be within
3/16". If they are not, raise the low side
of the deck using the height adjusters on
the deck lift brackets (see Figure 31).
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 30.
8. Measure the distance between the
ground and the cutting edge of the
forward blade at the front of the deck
(Front position in Figure 30) and
between the ground the cutting edge of
the left and right blades at the rear of the
deck (Rear position in Figure 30).
9. The cutting edge at the front of the deck
(Front position in Figure 30) should be
approximately 1/8" lower than the cutting
edges at the rear of the deck (Rear
position in Figure 30).
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 31). 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.
Blade Side-to-Side Level
Right
Blade Front-to-Back Pitch
Level and pitch the mower with the height
adjusters on each deck lift bracket
(Figure 31).
12. Loosen the jam nut on the deck leveling
bracket bolt about 1/4 turn to reduce
clamp load on the height adjusters.
13. Loosen the jam nut on the deck lift bolt
and then turn the bolt clockwise to raise
the deck or counterclockwise to lower
the deck. Tighten both jam nuts.
EN - 35
Figure 30
Left
Front
Rear