Contractor® ST S21 3′n1 SP B&S

The Masport 21″ Self Propelled professional mower features a commercial grade 3 speed transmission and is powered by a commercial Briggs & Stratton 850 engine. This mower is designed for large yards, small acreage and commercial use. The heavy duty high arch steel chassis is able to withstand sandblasting and hard impacts and is combined with the Quadcut 4 blade cutting system resulting in superior cutting, mulching and catching performance. The heavy duty cast alloy wheels are extremely tough and are designed to operate under commercial conditions limiting possible down time.

  • - Powered by Briggs & Stratton 190cc OHV Series 850 Commercial IC ReadyStart™ 4 stroke engine
  • - ReadyStart™ – no priming required and easy starting
  • - Cast iron sleeve in cylinder
  • - 540mm (21″) deep draw heavy duty steel chassis
  • - Steel front bumper and engine guard offer protection to the cutting chassis
  • - Bolt in front axle with steel bearing plates bolted directly to the chassis
  • - GT Agility PRO 3 Speed Commercial transmission – Ground speed 3.74km/h – 6.63km/h
  • - Masport Quadcut® 4 Blade Disc System for superior catching due to increased airflow
  • - Cut, Catch, Mulch & Rear Discharge
  • - Large, wide diameter, professional grade, heavy duty, cast aluminium Front 200mm (8″) and Rear 225mm (9¼”) wheels with synthetic rubber tyres and precision 6202 sealed ball bearings
  • - Comfortable and sturdy upturned upper handle with soft grip, large diameter and heavier gauge steel tube
  • - Robust lower handle with additional bracing for extra durability
  • - 3 position handle locking system for different height settings
  • - Large capacity Commercial Dacron Catcher with dust cover
  • - Rear Discharge Chute designed for safe discharge of grass when mowing without a catcher
  • - Zone start for comfortable starting position


Mulching Capable
Variable Speed Self Propelled
Adjustable Wheel Bearings
Zone Start
Rear Discharge Chute

Chassis Material Deep draw heavy duty steel
Cutting Methods Cut, Catch, Mulch, Rear Discharge
Cutting Width 540mm (21")
Cutting System Masport Quadcut® Blade Disc System
Number of Blades 4
Engine Make Briggs & Stratton
Engine Model OHV Series 850 Commercial IC
Engine Capacity 190cc
Power Rating (Torque) 8.5ft/lb or 11.5Nm
Starting System ReadyStart™
Engine Type 4 Stroke
Drive System GT Agility PRO 3 Speed Commercial
Ground Speed 1st - 3.74km/h, 2nd - 5.11km/h, 3rd - 6.63km/h
Catcher Type Dacron catcher with dust cover
Catcher Volume 80L
Wheel Type & Size Cast Aluminium Front 200mm (8") and Rear 225mm (9¼")
Wheel Bearing Type Precision 6202 sealed ball bearings
Upper Handlebar Type Upturned with soft grip
Lower Handlebar Type Reinforced
Handlebar Retainer 3 position handle locking
Cutting Height Range 13mm - 60mm
Cutting Height Steps 11
Cutting Height Adjustment Single Point
Weight 56.2kg
Now $1,299
Interested? Enquire Now!