Simplicity 5901779

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Commercial Series Engine

Designed to perform under harsh, demanding conditions. With its patented five-step integrated cyclonic air management system, the Briggs & Stratton® Commercial Series Engine provides ultimate dust and debris protection for extended engine life.


Simplicity offers comfortable commercial-style mowing with a front- and rear-wheel suspension system for increased mowing productivity. It also features a comfortable high back seat, adjustable steering levers, convenient controls and padded footrests.


The rugged fabricated mower deck is made from 10-gauge steel, with reinforced top, side skirts, corners and a steel front edge to ensure durability and a quality cut for years to come. With limited lifetime warranty**.


The easy-to-adjust, foot-operated, 16-position height-of-control can be moved in 1/4-inch increments and is clearly visible to the operator.


Every control is right at your fingertips: key switch, choke throttle, electric PTO switch for mower engagement, hour meter, cup holder and fuel gauge.


A smooth ride and a smooth cut. The pivoting front axle not only has ride-dampening front suspension shocks, but also supports the mower deck and allows it to follow the contours of the ground for a beautiful scalp-free lawn.


Designed for larger commercial application the Hydro-Gear® ZT-3400™ Transaxles are capable of delivering up to 225 ft.-lbs. of continuous torque delivering smooth, infinitely variable speed and bi-directional control in a durable integrated package.


Model 5901779
Marketing Model 27/52
Engine Brand Briggs & Stratton
Engine Model Commercial Series V-Twin
Start Type Key
Power Rating * 27
Cylinders 2
Choke/Throttle Separate Choke & Throttle
Engine Displacement (cc) 810
Fuel Tank Capacity (gal) 5.5
Battery(cca) 350
Transmission Type Hydro-Gear® ZT-3400™
Ground Speed-Fwd (mph) 0-10.0
Ground Speed-Rev (mph) 0-5.0
Brake Separate Lever
Frame 11-Gauge Steel
Front Tires (in) 13 x 6.5 - 6
Front Axle Pivoting w/ Shocks
Rear Tires (in) 23 x 10.5-12 (New Tread Pattern)
Seat 18" Premium Adjustable with Armrests
Suspension Front & Rear
Cutting Width (in) 52
Mower Deck Type Fabricated
Height-of-Cut (in) 1.5-5
Height-of-Cut Positions 16-Foot Assist
Number of Blades 3
Blade Engagement Electric PTO Switch
Mower Deck Removal Frame Mounted
Anti-Scalp Wheels 2 Front/Rear Roller
Spindle Commercial-Aluminum
Cargo Bed + N/A
Steering Twin Levers
Headlights Optional
Fuel Level Indicator Standard Gauge / Left Hand Fender
Cup Holder Standard
Assembled Length (in) 81
Rear Bumper Standard, Steel
Roll Over Protection (ROPS) Folding
Assembled Width (in) 68
Assembled Height (in) 68