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Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

  • Wonder-Boy Specifications


    Kent

    SPECIFICATIONS

    Model 575-- 5-3/4 Horsepower

    ENGINE -- 4 cycle, 5-3/4 hp, single cylinder, air-cooled heavy duty Briggs & Stratton with cast iron cylinder sleeve. Improved large recoil starter. Improved ignition performance. Oil both air cleaner for longer engine life. Manual choke with convenient front control. Hinged hood tilts back for easy access.

    CLUTCHES -- Simplicity "Soft Action", spring-loaded idlers. Conveniently-located controls.

    AXLES -- "Duomafic" two-speed rear axle; exclusive planetary design has two forward speeds and two reverse. Truck-type differential.   Articulated front axle will clear 8" obstacles.

    STEERING -- Complete control of unit concentrated in single sabre grip "Joy Stick." Safety-loaded front wheel spindles permit short turns. Ball taint on steering rods for ease of handling.

    TIRES -- Soft, pneumatic, stud-tread, full-traction tires; 4.00x8-2-ply on rear. Soft, pneumatic, non-skid, wide 10-3.50 x 4 stud, 2-ply tread tires on front.

    FRAME -- Electrically-welded steel. Center frame of heavy tubular steel.  

    OPTIONAL EQUIPMENT -- 12-volI electric starter and 20 amp. hr.12-volt battery.

    POWER TAKE OFF -- 2-pulley power take off shaft.

    Model 450-- 4-1/2 Horsepower

    ENGINE -- 4 cycle, 4-1/2 HP, single cylinder, air cooled heavy duty nationally known Briggs & Stratton. Large recoil starter. Oil bath cleaner for longer engine life. Hinged hood tilts back for easy accessibility.

    CLUTCHES -- Simplicity "Soft Action", spring loaded idlers. Conveniently located controls.  

    AXLES -- "Duomatic" Two Speed Rear Axle, exclusive planetary design has two forward speeds and two reverse. Truck type differential. Articulated Front Axle, will clear 8" obstacle.

    STEERING -- Complete control of unit concentrated in single grip "Joy Stick". Safety loaded front wheel spindles permit short turns. Ball joint on steering rods for ease of handling.

    TIRES -- Soft pneumatic stud tread full traction tires, 4.00 x 8- 2 ply on rear.  

    FRAME -- Electrically welded steel. Center frame of heavy tubular steel.  

    OPTIONAL EQUIPMENT -- 12 volt electric starter with neutral safety device and 20 amp. hr.- 12 volt battery.

    Click each picture for a closer view.

    wb_gang_pg10.jpg (33965 bytes)
    WITH REEL AND GANG MOWERS

    wb_rotary_pg10.jpg (46388 bytes)
    WITH 32" ROTARY MOWER

    wb_blade_pg10.jpg (23964 bytes)
    WITH 30" AND 36" SNOW PLOW AND GRADER BLADE

    duomatic_pg10.jpg (22111 bytes)

    The Simplicity "Duomatic" axle is a planetary transmission that shifts easily; permits decreasing speed to increase power. Power is equally divided between both drive wheels by a 4-pinion gear differential. Easy to maneuver with a positive, neutral position.

    [Source: Simplicity Lawn and Garden Power Equipment catalog, 1959, courtesy of Wally Koerbel]  


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