Gravely 994123 Lawn Mower User Manual


 
EN - 34
Installing the Mower Deck
See Figure 30.
1. Slide mower deck under unit.
2. Connect front mower mounting arms (3)
to deck with mower mounting pins.
3. Install link chains on the mower lift arms
in the same holes they were removed
from.
4. Install PTO mower belt (see
Replacing
Mower Belts
on page 30).
5. Raise the deck to the transport position
and connect the lift assist springs to the
lift arms.
6. Level mower deck (see
Leveling the
Mower Deck
on page 34).
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 3 1/4” (8.3 cm)
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
3/16” (4.7 mm). 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
1/8” (3.2 mm) 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.
Figure 30
1. Mower Lift Arm
2. Mower Lift Link
3. Mower Mounting Arm
4. Drag Link Mounting Pin
5. Mounting Hardware
6. Lift Assist Spring
7. Mounting Pin Hardware
4
2
1
7
6
3
7
3
5
5