Introduction
Kubota Z121S Zero-Turn Mower
The Kubota Z121S is a zero-turn mower produced between 2014 and 2024. Designed for residential and commercial turf maintenance, this machine combines a high-maneuverability chassis with a gasoline-powered engine to facilitate efficient mowing operations.
Engine and Power
The tractor is powered by a Kohler Courage Professional gasoline engine. This 2-cylinder, air-cooled V-Twin engine features a displacement of 747 cc (45.6 ci) and delivers a gross power output of 21 hp (15.7 kW). It is equipped with an electric starter and operates at a rated speed of 3600 RPM. The engine requires an oil capacity of 2 quarts (1.9 liters).
Transmission and Steering
The Z121S utilizes a Hydro-Gear ZT3100 hydrostatic transmission, providing infinite forward and reverse gears for precise control during operation. The system includes an electric dry disc clutch and an independent mid-mounted Power Take-Off (PTO). The steering is managed via a differential power system on a two-wheel drive configuration.
Dimensions and Operator Comfort
The machine has a wheelbase of 45.5 inches (115 cm) and an overall width of 47.5 inches (120 cm). It is equipped with a 48-inch mower deck. Operator safety and comfort are supported by a two-post fixed Roll-Over Protective Structure (ROPS) and a suspended seat. The unit has a total weight of 749 lbs (339 kg).
Electrical System
The electrical system operates on a 12-volt architecture. It features a battery with a Cold Cranking Amps (CCA) rating of 300 and a charging system capable of 15 amperes. The system utilizes a negative ground configuration.
Conclusion
With its hydrostatic drive, zero-turn capability, and 48-inch deck, the Kubota Z121S is engineered for users requiring high efficiency in lawn maintenance. Its combination of a powerful Kohler engine and durable transmission makes it suitable for both professional landscaping tasks and private property maintenance.
Production Information of Kubota, Z121S
- Zero-turn mower
- Original price was $5,491 in 2015
| Manufacturer | Kubota |
|---|
Dimension and Tires Information of Kubota, Z121S
| Rear tread | 37.6 inches [95 cm] |
|---|---|
| Wheelbase | 45.5 inches [115 cm] |
| Weight | 749 lbs [339 kg] |
| Height (ROPS) | 65 inches [165 cm] |
| Length | 76.4 inches [194 cm] |
| Front tread | 31.3 inches [79 cm] |
| Width | 47.5 inches [120 cm] |
| Lawn/turf front | 11x4-5 |
|---|---|
| Lawn/turf rear | 22x10-14 |
Engine Specifications of Kubota, Z121S
- Kohler Courage Professional
- Air-cooled vertical-shaft V-Twin
- Gasoline
- 2-cylinder
| Rated RPM | 3600 |
|---|---|
| Displacement | 747 cc [45.6 ci] |
| Starter | Electric |
| Power (gross) | 21 hp [15.7 kW] |
| Oil capacity | 2 qts [1.9 L] |
| Starter volts | 12 |
Transmission Information of Kubota, Z121S
Transmission variants 1
| Transmission | Hydro-Gear ZT3100 |
|---|---|
| Oil capacity | 2.4 qts [2.3 L] |
| Type | Hydrostatic |
| Gears | Infinite forward and reverse |
Mechanical Specs of Kubota, Z121S
- Two-wheel drive
- Two-post fixed ROPS with suspended seat.
| Steering | Differential power |
|---|
Power Information of Kubota, Z121S
| Mid PTO | Independent |
|---|---|
| Clutch | Electric dry disc |
Electrical System of Kubota, Z121S
| Ground | Negative |
|---|---|
| Battery volts | 12 |
| Charging amps | 15 |
| Battery CCA | 300 |
Where it sits
With 21 HP, the Kubota Z121S sits between ZG20 (20 HP) and F2260 (22 HP) in Kubota's range. Its power puts it in the 32th percentile of 2010s models in our database (783 machines).
Frequently asked questions
How much horsepower does the Kubota Z121S have?
The Kubota Z121S delivers 21 HP.
What years was the Kubota Z121S produced?
The Kubota Z121S was produced in 2014-2024.
What engine does the Kubota Z121S have?
The Kubota Z121S is powered by a Gasoline, 2-cylinder engine.
What transmission does the Kubota Z121S use?
The Kubota Z121S uses a Hydro-Gear ZT3100 transmission.
How much does the Kubota Z121S weigh?
The Kubota Z121S weighs 749 lbs [339 kg].
Is the Kubota Z121S 4WD?
The Kubota Z121S is available in 2WD.