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Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

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    Other Attachments

    Rotary Mowers 48" (Mfrs. No. 990740) 42" (Mfrs. No. 990784)
    Effective Cutting Width 48" (for Sovereign only)   42" (Sovereign or Landlord)
    Mowing Capacity Up to 2 ¼ acres an hour   Up to 2 acres an hour


    36" long x 54" wide x 6 ½" deep 35 ½" long x 47 ½" wide x 6 ½" deep

    Mower overall width (including deflector)

    54" 47 ½"  
    Deck height above blade


    Cutting Height Continuously variable between 1-1/8" and 3-1/8"
    Blade Arrangement Three staggered overlapping blades.
    Mower Input Drive Tractor center PTO clutch controls power to cushioning V-belt to mower center spindle
    Side Spindle Drive Cushioning V-belt with spring-loaded idler. Couples all spindles.
    Spindle Bearings Sealed rolling contact

    Sickle Bar (Mfrs. No. 990785) ,

    Effective Width


    Mowing Rate

    Up to 1 acre an hour

    Slope mowing angle up or down (relative to tractor)

    45 ° up. 20 ° down.

    Pitman Bearings

    Sealed heavy duty rolling contact.


    V-belt from tractor center PTO clutch through planetary reduction gear at mower head.

    Cultivator (Mfrs. No. 699)

     Maximum Width


    Minimum Width Between Center Shovels


    Vertical Adjustmentof Standards


    Number and typeof Sweeps

    5 Duck foot, heat treated steel


    Lawn Roller (Mfrs. No. 990227)    

    Effective Width


    Water Capacity

    40.2 gallons  




    18" high  


    44" wide  

    Roller Diameter



    Spring Tooth Harrow (Mfrs. No. 990408)

    Maximum Effective Width



    7 heat treated high carbon steel teeth  


    Tooth spacing and vertical height are individually adjustable. Tool bar adjusts vertically from hitch to change draft angle. Two adjustable gauge shoes control depth.

    Draft Angle

    Tool bar adjustable vertically from hitch

    10" Moldboard Plow (Mfrs. No. 990464)

    Width of Cut


    Rank of Plow( ground clearance)


    Overall Dimensions

    41" long x 25" high

    Coulter Diameter


    Coulter Adjustments

    Vertical - 4"


    Transverse - 1-3/4"


    Fore and aft -- 4 positions

    Landside Length


    [Source:   Simplicity brochure, 15hp and 10hp tractors, Form 11-007, hand-dated 7/24/72, courtesy of Wally Koerbel]

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