Simplicity 5901597

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Redefining commercial mower efficiency the Vanguard™ 810 Engine with the Oil Guard™ System (select model) is the best engine for getting work done, reliably. Plus with a massive 500 hour or 5 year* oil change interval, your mower will spend more time mowing and less time in routine maintenance.


Every control is tailored to the demands of the professional landscaper: easy-to-use, conveniently located and extremely durable.


The ZT-4400™ transaxles are commercial engineered to deliver smooth, unmatched power and durability. Featuring cooling fans and a robust planetary gear reduction, this transaxle is designed for powerful machines.


The Cobalt's 4-wheel suspension system reduces vibration to the chassis and operator, giving you a smoother ride at faster mowing speeds.


An innovative grass cutting system has the center point offset, allowing for supreme cutting and excellent discharge leaving you with a superior cut. The reinforced leading edge provides protection where the mower deck needs it most.


The deep cushioned 18-inch high-back seat, armrests and adjustable steering levers are built for convenient, comfortable operation.


Turn the knob on the foot pan to gain access to the top of the deck when zero turn lawn mower maintenance is needed, allowing you can get back to the job quickly and easily.


Three steel bars wrap-around the rear of the zero turn protecting the mower engine and operating components from damage.


Model 5901597
Marketing Model 27/61
Engine Brand Vanguard™
Engine Model Big Block™ V-Twin
Start Type Key
Power Rating * 26
Cylinders 2
Choke/Throttle Separate Choke & Lever
Engine Displacement (cc) 810
Fuel Tank Capacity (gal) 11 (Twin 5.5 Gallon Tanks)
Battery(cca) 350
Transmission Type Hydro-Gear® ZT-4400®
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 Independent pivoting, 1.5" x 2" Welded Steel
Rear Tires (in) 24 x 12-12
Seat 18" Premium Adjustable with Armrests
Suspension Front & Rear
Cutting Width (in) 61
Mower Deck Type 10 Guage Fabricated Steel
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 6 Front/Rear Roller
Spindle Cast-Iron
Steering Twin Levers
Headlights Optional
Fuel Level Indicator Standard Gauge / Left & Right Hand Console
Cup Holder Standard
Assembled Length (in) 82.5
Rear Bumper Standard, Steel
Roll Over Protection (ROPS) Folding
Assembled Width (in) 78
Assembled Height (in) 71