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2.6.2 Mounting: Hinged to tilt up for access to hydraulic pumps, battery and other components. The seat is held in the tilted position with a linkage. Adjustable fore and aft seat track. 2.6.3 Seat Safety Switch: Internal to the bottom seat cushion, non serviceable. Time delay module incorporated into the Safety Interlock System eliminates rough ground cut-outs. 2.6.4 Armrests: Standard seat: foam padded flip-up armrests. Optional suspension seat: molded adjustable flip-up armrests. 2.7 HYDROSTATIC GROUND DRIVE SYSTEM 2.7.1 Hydrostatic Pumps: 27 HP Kohler Units: Two Hydro Gear PR 16 cc variable displacement piston pumps. 20 HP & 23 HP Kohler Units: Two Hydro Gear PJ 12 cc variable displacement piston pumps. 2.7.2 Wheel Motors: Hydro Gear planetary reduction motors. 2.7.3 Hydraulic Oil Type: Use Mobil 1 15W-50 Synthetic Motor Oil. 2.7.4 Hydraulic Oil Capacity: For 27 HP Kohler Units: 5.2 qt. (4.9 L.) For 20 HP & 23 HP Kohler Units: 4.0 qt. (3.8 L.) 2.7.5 Hydraulic Filter: Replaceable cartridge type. P/N 103-2146: 25 microns, No bypass 2.7.6 Speeds: 27 HP Kohler Units: 0-10.5 mph (16.9 km/hr) forward 0-6.6mph (10.6 km/hr) reverse 20 HP & 23 HP Kohler Units: 0-8.7 mph (14.0 km/hr) forward 0-5.7mph (9.2 km/hr) reverse 2.7.7 Drive wheel release valves allow machine to be moved when engine is not running. 13 2.8 TIRES 20 HP & 23 HP Kohler Units Drive Front Caster Rear Caster (Single Tail Wheel) Pneumatic (Air-Filled) Semi-Pneumatic Semi-Pneumatic Quantity 2 2 1 Tread Turfmate Smooth Smooth Size 23 x 10.50-10 9 x 3.50-4 13 x 6.5-6 Ply Rating 4 Pressure 13 psi (90 kPa) 27 HP Kohler Units Drive Front Caster Rear Casters (Dual Tail Wheel) Pneumatic (Air-Filled) Semi-Pneumatic Semi-Pneumatic Quantity 2 2 2 Tread AT101 Smooth Smooth Size 24 x 12.00-12 9 x 3.50-4 13 x 6.5-6 Ply Rating 4 Pressure 9 psi (62 kPa) 2.9 MOWER DECK (Sold Separately) 2.9.1 Models FR524 FR604 Discharge Side Discharge Side Discharge Cutting Width 52 in. (132 cm) 60 in. (152 cm) 2.10 DIMENSIONS 2.10.1 Overall Width: w/52” Deck w/60” Deck without deck 49.0 in. (124.5 cm) 49.0 in. (124 cm) deflector up 53.3 in. (135.4 cm) 61.4 in. (156 cm) deflector down 64.0 in. (163 cm) 72.0 in. (183 cm) 2.10.2 Overall Length: 20 & 23 HP Kohler 27 HP Kohler without deck & floor pan folded 80.4 in. (204.2 cm) 82.3 in. (209.0 cm) w/52” Deck 112.4 in. (285.5 cm) 114.3 in. (290.3 cm) w/60” Deck 112.4 in. (285.5 cm) 114.3 in. (290.3 cm) 2.10.3 Overall Height: Roll Bar - Up Roll Bar - Down 69.2 in. (175.8 cm) 50.7 in. (128.8 cm) 2.10.4 Curb Weight: without Deck 911 lbs. (413 kg) w/52” Deck 1303 lbs. (591 kg) w/60” Deck 1348 lbs. (611 kg) 2.10.5 Tread Width (Center to Center of Drive Wheels): For 27 HP Kohler Units: 41.4 in. (105.2 cm) For 20 HP & 23 HP Kohler Units: 38.9 in. (98.8 cm) 2.10.6 Wheel Base (Center of Drive Wheel to Center of Rear Caster Wheel): For 27 HP Kohler Units: 51.2 in. (130.0 cm) For 20 HP & 23 HP Kohler Units: 54.1 in (137.4 cm) 2.10.7 Minimum Turning Radius: For 27 HP Kohler Units: 55.25” For 20 HP & 23 HP Kohler Units: 56.3” 14 15 2.11 TORQUE REQUIREMENTS Bolt Location Torque Cutter Housing Spindle Nut (secured with threadlocker) 160-185 ft-lbs. (217-251 N-m) Blade Mounting Bolt............................................................... 55-60 ft-lbs. (75-81 N-m) Sheave Mounting Nut ...................................................... 90-110 ft-lbs. (122-149 N-m) Engine Deck/Front Frame Mount Bolts .................................. 30-35 ft-lbs. (41-47 N-m) Anti-Scalp Roller (See Figure 7) Nyloc Nut ......................................................................30-35 ft-lbs. (41-47 N-m) Hex Capscrew...............................................................50-55 ft-lbs. (68-75 N-m) Engine Mounting Bolts .......................................................... 30-35 ft-lbs. (41-47 N-m) Wheel Lug Nuts ................................................................. 90-95 ft-lbs. (122-129 N-m) Wheel Motor Mounting Bolts................................................ 72-77 ft-lbs. (98-104 N-m) Wheel Hub Slotted Nut ..................................................minimum125 ft-lbs. (169 N-m) Rollover Protection System (Roll Bar) Mounting Bolts ........... 30-35 ft-lbs. (41-47 N-m) Clutch Retaining Bolt (secured with threadlocker).................. 55-60 ft-lbs. (75-81 N-m) 3. OPERATION INSTRUCTIONS 3.1 CONTROLS 3.1.1 Familiarize yourself with all controls before operating the mower. 3.1.2 Motion Control Levers: Located on each side of the console. The left lever controls the flow of hydraulic oil from the left hydrostatic pump to the left drive wheel motor. The right lever controls the flow of hydraulic oil from the right hydrostatic pump to the right drive wheel motor. IMPORTANT: To begin movement (forward or backward) the operator must be in the seat, the brake lever must be disengaged (pushed down) before the motion control levers can be moved in or the engine will kill. When levers are centered in the T-slot the drive system...

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