Service manual

16
AR 250
TRACTOR
Overall Features
– Heavy duty formed steel chassis with box
section frame rails
– Hand throttle
– Single foot pedal operating infinitely variable
hydrostatic transmission
– Gauges - Fuel, coolant temperature, running
time
Engine
– 4-cylinder, liquid-cooled Kubota diesel
– Power - 38 hp ( 28 kW) at 3000 rpm
– Displacement: 91.44 cu in (1498 cc)
Drive
– Full-time 4-wheel drive
– Direct coupled Sundstrand M35 wheel
motors
– 29 cu in front; 21 cu in rear
– Direct coupled variable displacement pump
Fuel System
– Diesel #2 for warm weather. For cold
weather operation (below 20
o
F), diesel #1 or
a winterized blend of #1 and #2 are
preferrable to reduce paraffin-like components
that can turn into flakes and clog the fuel system.
– Capacity: 12 gal (46 L)
Brakes
– Hydrostatic braking
– Parking brake - foot operated
– 10.25" x 1.75" (260 mm x 45 mm) band
brakes at front wheels.
Tires
– Front - 26.5 x 14.00-12 4-ply turf tread
– Rear - 20 x 10.00-8 4-ply turf tread
– Ground pressure 9 psi
– Recommended tire pressure - 9 psi
Steering
– Hydrostatic power steering
– Adjustable tilt wheel
Seat
– High back, vinyl covered
– Suspension - Can be varied to adjust for
operator's weight
– 5" (127 mm) front-to-rear adjustment
Speeds
– Cutting - 7.5 mph (12 km/h)
– Transport - 8.5 mph (16 km/h)
– Reverse - 4 mph (6.4 km/h)
Dimensions
– Cutting width - 98" (2.5 m)
– Overall width - 104" (2.6 m)
– Transport width - 84" (2.1 m)
– Overall length - 122" (3.1 m)
– Overall height - 56" (1.4 m)
Weight - 2800 lb
Hydraulics
– Filter - 10 micron
– Diagnostic hydraulic test ports
– Capacity - 8.3 gal (32 L)
– MegaTuff™ hydraulic hoses
– Turf Protector™ fluid; 10W30 optional
CUTTING UNITS
General
– Five 22" (559 mm) rotary decks supported by
equal ratio lift arms
– Drive - fixed displacement hydraulic motors
directly coupled to cutting units.
– Control - Cutting unit lift lever with automatic
shutoff and safety interlock restart.
– Construction - Heavy-duty, welded pressed
steel
– Suspension - Steerable floating head
– Cutting blades:Envirodecks-Patent-pending
twin blades. Side Discharge-High Lift blades
– Lower blade - 22" (559 mm)
– Upper blade - 21.5" (546 mm)
(Envirodecks only)
– Height of cut - Adjustable in .25" (6 mm)
increments; no tool required
– Rear roller - 4" (102 mm) diameter; smooth
roller standard
SPECIFICATIONS