Interstate Supplies and Services

- Model ECSKA21 - Walk Behinds Mower



“S” as in Simple. They say simplicity is the basis of great engineering. And it doesn’t get much simpler than the Exmark® Commercial 21 S-Series, beginning with its patented front height adjustment.This straightforward design makes conventional pivot-style adjusters obsolete. There are zero grease points and less than half the parts of other mowers in its class. That makes servicing the S-Series almost as easy as it gets. Then there’s the single speed transmission, simplified bail system, single-point rear height adjust, the innovative blade design that makes it easy to go from mulching to bagging…the list goes on and on. Just like the mower.

  • Goodbye guesswork: The S-Series features an open-top bag, so it’s easy for the operator to tell when it’s full. No more wasted time dumping half-full bags.
  • Single-speed transmission: Just engage and go, at speeds up to 4.2 mph. It’s simple operation makes the S-Series a great mower for training new employees.
  • Multi-purpose blade: The innovative blade design makes it easy to go from mulching to bagging. And vice-versa.


  • Engine: Kawasaki®
  • Model: FJ180V
  • Displacement: 180
  • Air Filter: Dual element air cleaner
  • Drive System: Self-propelled; rear-wheel gear-driven
  • Speed: 0.0 mph to 4.2 mph (6.6 kmph) forward
  • Fuel Capacity: 2 quart integral fuel tank
  • Safety Package: Zone start
  • CARB Compliant: No


  • Deck Construction: 5' deep, 1/4'-thick die-cast aluminum
  • Deck Style: Fixed deck, Rear -discharge bagger standard with option to mulch
  • Width: 21' (53.34 cm)
  • Cutting Heights: 1.0' (2.5 cm) to 4.5' (11.4 cm) in 0.5' (1.3 cm) increments
  • Blades: 1 Blade at 20.5' Length
  • Blade-Tip Speed: Approximately 18,500 fpm


  • Drive Tires: 9' x 2.5', semi-pneumatic
  • Bag Capacity: 2.5 bushels (20 gallons)


  • Length: 62 in. (157.5 cm)
  • Width: 22 in. (55.9 cm)
  • Height: 38 in. (96.5 cm)
  • Curb Weight: 112 lbs

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