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Model
Sovereign 3112
Engine
12 hp Briggs & Stratton, Model No. 300421, 4 cycle, single cylinder, horizontal crankshaft engine. Air-cooled with mechanical governor. "Synchro-balanced engine," reducing vibrations 60% vertically and 85% horizontally. Stellite exhaust valves with Stellite seat for longer life.
Transmission
Hydrostatic drive gives finger-tip speed control, eliminating gear shifting. Choice of Hydrostatic
or Variable Speed Drive.
Speeds
Hydrostatic drive gives infinite number of speeds forward up to 6.9
mph. Variable Speed Drive forward speeds vary from 0.8 to 6.6 mph.
Reverse speeds up to 3.4 mph.
Starter
Easy-Spin electric starter, 12-volt system with 40 amp battery, key ignition switch, 3-stage voltage regulator.
Clutch-Brake
Combination clutch-brake for positive control. Depressing clutch halfway declutches unit, depressing all the way down applies brake.
Traction
Controlled Traction Differential--when one wheel is on slippery surface, other rear wheel continues to drive.
Turning Radius
31½ inches on inside wheel.
Steering
Steering ratio 4.1 to 1 gear reduction.
Dimensions
Without attachments--34½ inches wide x 72 inches long x
37¾ inches high.
Tires
Pneumatic tires 23 x 8.50 x 12 in rear and 18 x 6.50 x 8 in front
Seat
Deluxe foam rubber bucket seat.
[Source: Simplicity -- for picture perfect outdoor maintenance,
1969 Product Catalog, Form No. 868, courtesy of John Boesch]