425HD-MD INITIAL SETUP
Mower Deck Height
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3-18 425HD-MD/masterdoc101602 425HD-MD INITIAL SETUP
3.23 Mower Deck Height
The Model 425HD-MD Articulator has a mower deck height range of 1" to 4 1/2", in 1/4"
increments. If you wish to change the deck height, do so before attempting to operate the
Articulator.
The mower deck height adjustment lever has (1) permanently fixed spacer, and (16)
adjustable spacers, each equal to 1/4" of deck height adjustment. The deck is at its mini-
mum height (1") when only the fixed spacer is in front of the lever lock bracket. Each
adjustable spacer placed in front of the lock bracket raises the deck height by 1/4”, up to 4
1/2". The spacers which mark the 2", 3", and 4" deck height positions are knurled for
quick identification.
To adjust the deck height, push the deck height control valve (located behind the control
box) forward to remove the tension from the deck height adjustment lever, allowing the
spacers to move freely along the lever. This motion will also temporarily raise the deck.
While maintaining tension on the control valve, raise the hand lever from the locking
bracket and adjust the spacers to the desired height setting. Each spacer placed in front
of the lock plate will indicate an additional 1/4” of deck height. When the desired height
setting is reached, place the hand lever back into the locking bracket to secure the spac-
ers in place. Slowly release the control valve, replacing the tension to the adjusting lever.
Be sure to keep fingers away from the locking bracket.
NEVER attempt to change the cutting deck height while the engine is
running!
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