Leveling Front Mower; Servicing Front Deck - Jacobsen R-311T Dealer's Manual

4 ADJUSTMENTS

4.15 LEVELING FRONT MOWER _________________________________________________

1. Before leveling the front deck, the mower tires, and
caster wheels must be properly inflated. The cutting
height is directly related to the radius of the tire.
2. Set the cutting height of the front mower to 5-1/2 in.
(140 mm).
3. Rotate all blades so that one end of the blade (A) is
pointing forward.
4. Fully lower front deck. Measure from the ground to
point (A) and from the ground to point (B). Point (B)
must be 1/8 in. (3 mm) higher than point (A).
5. Add or remove shims (C) as required between bumper
pad (D) and lift arm (E).
6. Once the front mower has been properly leveled, the
cutting height may be readjusted without changing the
shims. It may be necessary to re-level the deck if there
is a change to the tires.

4.16 SERVICING FRONT DECK __________________________________________________

The front deck can be raised and tilted up to improve access
to the cutting unit and blades for service and cleaning. Be
sure to disengage all drives, engage parking brake, stop
engine and remove ignition key before working around
deck.
To tilt front deck up to its service position:
1. Fully raise front and right wing deck. Stop engine.
2. Remove height of cut pins from front deck and carefully
lift deck to a perpendicular position.
3. Use height of cut pin on left front lift arm to pin deck in
service position.
4. Start engine and lower front deck to the ground. Stop
engine and remove ignition key.
en-20
A
B
E
To return deck to service:
1. Start engine and fully raise front deck. Stop engine.
Remove pin from left front lift arm and slowly lower front
deck.
2. Install height of cut pins in correct set of holes. Start
engine and lower front deck.
A
A
B
B
Figure 4N
D
C
Figure 4O