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1. U-bolt
5. Start the engine and slowly raise the center mower deck.
6. Slowly raise each side cutting until the center of gravity
shifts and the deck starts to rotate into the upright
position.
7. Shut off the engine and remove the ignition key.
Pivoting the Center Mower
Deck Down
1. Slowly lower the wing mower decks until the center
of gravity shifts and the center mower deck rotates
downward.
2. Sit on the seat, start the engine, and lower the center
mower deck until it is slightly off the floor.
3. Secure the height-of-cut chains to the rear of the
mower deck.
4. Pivot the dampers upward into position and secure
with a clevis pin and cotter pin.
Adjusting the Mower-Deck
Pitch
Measuring the Mower-Deck Pitch
Mower-deck pitch is the difference in height-of-cut from the
front of the blade plane to the back of the blade plane. Use s
a blade pitch of 8 to 11 mm (5/16 to 7/16 inch). That is the
back of the blade plane is 8 to 11 mm (5/16 to 7/16 inch)
higher than the front.
1. Position the machine on a level surface on the shop
floor.
2. Set the mower deck to the desired height-of-cut.
1
2
g020969
Figure 80
2. Height-of-cut chain
3. Rotate a blade to point straight forward.
4. Using a short ruler, measure from the floor to the front
tip of the blade.
5. Rotate the blade tip to the rear and measure from the
floor to the tip of the blade.
6. Subtract the front dimension from the rear dimension
to calculate the blade pitch.
Adjusting the Center Mower-Deck Pitch
1. Loosen the jam nuts on the top or bottom of the
height-of-cut-chain U-bolt
2. Adjust the other set of nuts to raise or lower the rear
of the mower deck and attain the correct mower-deck
pitch.
3. Tighten the jam nuts.
1. U-bolt
62
(Figure
81).
1
2
g020969
Figure 81
2. Height-of-cut chain
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