Scag Power Equipment STR - Manual (Page 12)

6
SPECIFICATIONS
3.1 ENGINE
General Type ............................................................................. Heavy Duty Industrial/Commercial Gasoline
Brand ......................................................................................... Kohler
Model ......................................................................................... Command
Horsepower ................................................................................ 20 HP at 3600 RPM (Scag Model STR48-20CH)
22 HP at 3600 RPM (Scag Model STR48-22CH)
Type ........................................................................................... 4 Cycle Gasoline, Twin Cylinder, Horizontal Shaft
Displacement ............................................................................. 624 cc.
Cylinders ................................................................................... 2 with Cast Iron Sleeves
Governor .................................................................................... Mechanical Type with Variable Speed Control Set At 3600 RPM
Idle Speed .................................................................................. 1400 RPM
Fuel Pump Group ...................................................................... Mechanical Fuel Pump with In-Line Fuel Filter, Fixed Jet
Carburetor with Smart-Choke™ and Fuel Shutdown Solenoid
Fuel ............................................................................................ Non-Leaded Gasoline with a Minimum Octane Rating of 97
Oil Pump Group: ....................................................................... Positive Displacement Gerotor™ Oil Pump with Remote Oil
Filter
Starter ........................................................................................ Electric Starting with Cell Starter
Belts:
Engine Belt ............................................................................ Scag Part Number - 481235
Blower Drive Belt ................................................................ Scag Part Number - 481234
Left Pump Drive Belt ........................................................... Scag Part Number - 481236
Right Hand Drive Belt .......................................................... Scag Part Number - 481237
3.2 ELECTRICAL
Battery ....................................................................................... 12 Volt
Charging System ....................................................................... Alternator
Charging Output ....................................................................... 12 Volt, 30 Amp
System Polarity .......................................................................... Negative Ground
Starter ........................................................................................ 12 Volt Electric Ring Gear Type, Key and Solenoid Operated
Interlock Switches ..................................................................... Seat, Neutral Control, Mower Engagement (BBC), and Hopper
Instrument Panel ....................................................................... Ammeter, Hourmeter, Key Switch, Throttle Lever, Manual Choke,
BBC Switch, and Fuses
Fuses .......................................................................................... Two (2) 30 Amp
3.3 TRACTOR
Drive System ............................................................................. Hydraulic Drive with Two Hydrostatic Transmissions For
Independent Control of Each Drive Wheel
Hydrostatic Transmissions ........................................................ Two Hydro-Gear™ Transmissions with Integral Pump/Motor
with Axle
Steering/Travel Control ............................................................. Twin Lever Fingertip Steering Control with Individual Control to
Each Wheel
Parking Brake ............................................................................ Lever Actuated Linkage to Brakes on Both Drive Wheel Axles
Wheels:
(2) Front Caster .................................................................... 9 x 3.5 Smooth Tires
(2) Drive ............................................................................... 20 x 10.8 Four-Ply Pneumatic Tubeless, Radius Edge
(1) Rear ................................................................................
Fuel Tank ................................................................................... 5-Gallon Seamless Polyethylene Tank with Fuel Gauge Fill Cap
Tire Pressure:
Front Caster .......................................................................... 25 PSI
Drive ..................................................................................... 15 PSI
Rear ...................................................................................... 15 PSI
Seat ............................................................................................ Padded
Section 3