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NOTE: Decks have a raised weld (C) for side-to-side measurement.
MX101366—UN—22MAY20
Adjusting Point 1
a. Start by using the deck leveling gauge (A) to check the height
between the ground and the deck rim at adjusting point 1 (rear
left). The gauge should just slip under the deck rim.
b. If adjustments are necessary on the rear left deck rim area,
turn rear nuts (D) clockwise to raise the mower deck or
counterclockwise to lower the mower deck until the leveling
gauge (A) just slips under adjusting point 1.
c. Repeat procedure on the rear right side of the deck for
adjusting point 2.
NOTE: If an adjustment of more than 3 mm (1/8 inch) is required,
adjust both points alternately. A large adjustment on one side
can move the other side in the opposite direction.
d. Repeat steps 4b and 4c as necessary.
NOTE: To avoid hardware from loosening during operation, ensure
that bottom of the lock nut is engaged on the threaded tting.
5. Adjust the mower deck front-to-back level:
NOTE: Adjustment point 3 has a at bottom of the front deck hanger
bracket (E).
a. Use leveling gauge (A) to check the height between the oor
and front deck hanger bracket (E) at adjusting point 3. The
gauge should just slip under the bracket.
NOTE: For deck 48A, place the gauge (A) between the oor and
front lip of the deck shell.
MX101367—UN—22MAY20
Adjusting Point 3
b. If adjustments are necessary, loosen lower nut (F) on both
sides of the deck. Turn the top nut (G) equally on each side of
deck (starting with the front left) clockwise to raise front of
mower or counterclockwise to lower front of mower until gauge
just slips under adjustment point 3. Tighten lower nuts after
adjustment is complete and verify that four corners have some
tension.
NOTE: The front will lift a few millimeters when the jam nuts are
tightened on the trunnion.
NOTE: Before storing gauge, verify that deck latches in transport
position. If it does not latch, return to adjustment points 1 and
2 and turn both rear adjusting nuts counterclockwise equally
to lower rear of deck until deck latch engages.
6. Return deck leveling gauge to the stored position in the tool box.
Optional Leveling Method
MX101362—UN—24MAR20
Deck Leveling Gauge (PN: AM130907)
NOTE: An optional mower deck leveling gauge (AM130907) (A) is
available from your John Deere dealer. It allows for precise
mower deck leveling by measuring mower deck level at the
blade tips. This method can be used with all mower decks.
CAUTION: Avoid injury! Rotating blades are dangerous.
Before adjusting or servicing mower:
• Disconnect spark plug wires or battery negative (-) cable to
prevent engine from starting accidentally.
• Always wear gloves when handling mower blades or
working near blades.
NOTE: Mower deck wheels should not contact the ground when
leveling the deck.
Service Mower
44
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