Lastec 721XRT, Owner'S Manual

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Initial Set-Up
Mower Deck Height Adjustment
Initial Set-Up Lastec//021819 3-11
3
3.7 Mower Deck Height Adjustment
DANGER!

Always stop the tractor and disengage the PTO before attempting to set or adjust
the mower deck height!

Never adjust the mower deck height with the tractor running or the PTO engaged.
The Model 721XRT Articulator can be set to various heights ranging from 1" to 4 3/4".
Change the mower deck height at all the wheel locations by moving the wheel spacers
from above to below each wheel yoke collar on each wheel yoke shaft. When there are
no wheel spacers located below the collar, the deck is set at 1". There are two types of
wheel spacers, 1" thick and 1/4" thick. Placing any combination of wheel spacers below
the wheel shaft collar will raise the deck by the corresponding thickness of the spacer(s)
used.
Example: (1) 1” spacer and (2) 1/4” spacers placed below the wheel yoke collars will set
the mower deck to 2 1/2”.
Change the mower deck height on the center rear decks (decks 4 & 5) by moving the
spacers on the deck height chains from below to above the retaining plate. There are 3
knurled spacers, each indicating 1” increments, and 12 plain spacers, each indicating 1/4”
increments. When there are no spacers above the plate, the deck is set at 1”. Placing
any combination of wheel spacers above the plate will raise the deck by the correspond-
ing thickness of the spacer(s) used.
The height adjustment chains can also be calibrated using the turnbuckles located at the
top of the chains. Simply set the spacers to the desired deck height, and measure from
the bottom of the pan to the floor to verify the setting. Adjust the turnbuckle in or out to
calibrate the measurement with the spacer setting.
Danger