Gravely 915118 - Page 18

GB - 18
The Forward Pitch Of The Mower
Blades (Figure 13):
• Should be 0.0 in. (0.0 mm) to 1/4 in.
(6.35 mm) pitched forward.
NOTE: This measurement must be taken
when the mower blades ends are facing
forward.
The Pitch Of The Mower Blades From
Side-To-Side (Figure 14):
• Should be within 1/4 in. (6.35 mm) as
measured on each side of the mower
deck.
NOTE: This measurement must be taken
when the mower blades ends are
perpendicular (at a right angle) to the frame
of the unit.
Adjusting The Mower Deck To Adjust
Mower Blade Height And Pitch
(Figure 15):
NOTE: Adjusting the mower deck will adjust
he height and pitch of the mower blades.
1. Adjust the trunnions first and re-take the
three measurements required to level
and adjust the pitch of the mower deck.
These measurements are:
a. The distance from the mower
blades to the ground.
b. The forward pitch of the mower
blades.
c. The pitch of the mower blades
from side-to-side.
2. Repeat step 1 as needed until all three
measurements are within the tolerances
specified.
Figure 12
Lowest Cutting Position
1-1/2 in. +
1/4 in. (3.8 cm + 0.64 cm)
Highest Cutting Position
4-1/2 in. +
1/4 in. (11.4 cm + 0.64 cm)
1
3
2
1
3
2
1. Mower Deck
2. Mower Blade
3. Ground
Forward Pitch of Mower Blades
Forward Pitch = 0.0 in. (0.0 mm) to 1/4
in. (6.35 mm)
Front of Mower
Deck
1
3
2
Figure 13
1. Mower Deck
2. Mower Blade
3. Ground
1
3
2
Side-To-Side Pitch
1/4-in. (6.35 cm) from Side-To-Side
Figure 14
1. Mower Deck
2. Mower Blade
3. Ground