1
2
3
1. Mower Lift Arm
2. Link Chain
3. Mower Mounting Arm
Figure 20
Installing the Mower Deck (Figure 20)
1. Slide mower deck under unit.
2. Connect mower mounting arms 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 Remove PTO Belt (991022)
on page 17 or Replacing Mower Belts (991023) on
page 17).
5. Level mower deck (See Leveling the Mower Deck on
page 19).
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 in. (7.62 cm) cutting height.
2. Shut off engine. Engage parking brake. Remove the
ignition key.
Place blocks under the bottom edge of the deck, not
NOTE:
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
1
2
4
3
OF3765
4. Mower Mounting Pin
5. Mower Lift Arms
Locked
5. Measure the distance between the ground and cutting
edge of the blade on the left blade (Left position in
Figure 21) and on the right blade (Right position in
Figure 21). Distances should be within 3/16 in.
(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 22).
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 21.
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 21) and between the ground
the cutting edge of the left and right blades at the rear
of the deck (Rear position in Figure 21).
9. The cutting edge at the front of the deck (Front position
in Figure 21) should be 1/8 in. (3.18 mm) lower than
the cutting edges at the rear of the deck (Rear position
in Figure 21).
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 22). Be sure to raise the deck
evenly to keep the deck level side to side.
Pitching the front of the blades lower than the rear
NOTE:
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
Left
Blade Front-to-Back Pitch
Rear
GB-19
Front
Rear
Figure 21
Right