Scag Power Equipment STC - Manual (Page 10)

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Section 3
SPECIFICATIONS
3.1 ENGINE
General Type .............................................................................. Heavy Duty Industrial/Commercial Gasoline
Brand ......................................................................................... Kawasaki, Kohler
Horsepower ................................................................................ 17 HP (Spec.#FH500V) (Scag Model STC40-17KA)
19 HP (Spec.#FH601V) (Scag Model STC48-19KA, STC48A-19KA)
20 HP (Spec.#CV20S) (Scag Model STC48-20CV, STC48A-20CV)
21 HP (Spec.#FH641V) (Scag Model STC48-21KA, STC48A-21KA,
STC52A-21KA)
23 HP (Spec.#FH680V) (Scag Model STC52A-23KA)
Type ........................................................................................... 4 Cycle Gasoline, Twin Cylinder, Horizontal Shaft
Cylinders .................................................................................... 2 with Cast Iron Sleeves
Governor .................................................................................... Mechanical Type with Variable Speed Control Set At 3600 RPM
Idle Speed .................................................................................. 1550 RPM - Kawasaki
1900 RPM - Kohler
Kawasaki Fuel Pump Group ....................................................... Mechanical Fuel Pump with In-Line Fuel Filter, Fixed Jet Downdraft
Carburetor.
Fuel ............................................................................................ Non-Leaded Gasoline with a Minimum Octane Rating of 87
Oil Pump Group .......................................................................... Positive Displacement Gerotor™ Oil Pump
Starter......................................................................................... Electric Starting with Solenoid Shift Starter
Belts: .......................................................................................... Kevlar cord. Self-adjusting, Self-tightening
Pump Drive Belt ...................................................................... Scag Part Number - 482009
3.2 ELECTRICAL
Battery ....................................................................................... 12 Volt
Charging System ........................................................................ Alternator
Charging Output ........................................................................ 12 Volt, 13 Amp - Kawasaki
12 Volt, 15 Amp - Kohler
System Polarity .......................................................................... Negative Ground
Starter......................................................................................... 12 Volt Electric Ring Gear Type, Key and Solenoid Operated
Interlock Switches ...................................................................... Seat, Neutral Control, Mower Engagement (BBC), Parking Brake
Instrument Panel ........................................................................ Hourmeter, Key Switch, Throttle Lever, Manual Choke,
PTO Switch, Fuses and Safety Start module
Fuses ......................................................................................... Two (2) 20 Amp
3.3 TRACTOR
Drive System .............................................................................. Hydraulic Drive with Two Variable Displacement Pumps and Two
Cast-iron High Torque Motors
Hydrostatic Pumps .................................................................... Two Hydro-Gear™ BDP 10L Pumps with Dump Valves for
movement without running the engine
Drive Wheel Motors .................................................................. Two Ross Cast-iron High Torque Motors
Steering/Travel Control .............................................................. Twin Lever Fingertip Steering Control with Individual Control to
Each Wheel with Gas Spring Dampers
Parking Brake ............................................................................. Lever Actuated Linkage to Brakes on Both Drive Wheel Axles
Wheels:
(2) Front Caster ...................................................................... 13 X 5-6 Four-Ply w/tapered roller bearing pivots
(2) Drive - (40" Deck) ............................................................. 23 X 8.5 X 12 Four-Ply Pneumatic Tubeless, Radius Edge
(2) Drive - (48"-52" Deck) ...................................................... 24 X 12 X 12 Four-Ply Pneumatic Tubeless, Radius Edge
Fuel Tanks .................................................................................. 2 @ 4.5-Gallon Seamless Polyethylene Tank with large opening and
Fuel Gauge Fill Cap
Tire Pressure:
Front Caster ........................................................................... 25 PSI
Drive ...................................................................................... 8 PSI
Seat ............................................................................................ Padded, Thick Cushion with Extra Spring Support