The Kubota ZG20 is a 2WD zero-turn mower from the ZG series. This tractor was manufactured by Kubota from 2003 to 2007.

The Kubota ZG20 is equipped with a 0.6 L (38.1 cu·in) V-twin gasoline engine and a hydrostatic transmission with infinite forward and reverse gears.

Kubota ZG20

The Kubota ZG20 zero-turn mower used the Kohler GH630 engine. It is a 0.6 L, 624 cm2, (38.1 cu·in) V-twin natural aspirated gasoline engine with 77.0 mm (3.03 in) of the cylinder bore and 67.0 mm (2.64 in) of the piston stroke.

Kubota ZG20 Price

Location New Price Range Used Price Range
United States $6,000 – $8,000 $3,000 – $5,000
United Kingdom £4,500 – £6,500 £2,000 – £4,000
Australia AUD 8,000 – AUD 10,000 AUD 4,000 – AUD 6,000

Kubota ZG20 Specs


Model Kubota ZG20
Length 1,950 mm (76.8 in)
Width 1,530 mm (60.2 in)
Height 1,780 mm (70.1 in)
Wheel base 1,180 mm (46.5 in)
Weight 480 kg (1,058 lbs)
Fuel tank capacity 23.0 liters (6.1 US gal.; 5.1 Imp. gal)
Battery 12V
Cabin type Two-post foldable ROPS


Engine model Kohler GH630
Engine type Four-stroke, air-cooled, V-twin
Cylinders 2
Fuel type Gasoline
Displacement 0.6 L, 624 cm2, (38.1 cu·in)
Bore and stroke 77.0 mm X 67.0 mm (3.03 in X 2.64 in)
Horsepower 20.3 PS (14.9 kW; 20.0 HP)
Starter Electric

Transmission and chassis

Chassis 4×2 2WD
Steering type Differential power
Brakes Wet disc
Transmission model
Transmission type Hydrostatic
Gears Infinite forward and reverse
Speed Forward: 14.5 kmh (9 mph) Reverse: 8.0 (5 mph)


Front tires Lawn/turf: 13×5.0-6
Rear tires Lawn/turf: 23×10.5-12

PTO (Power take-off shaft)

Middle PTO type Independent
Middle PTO speed

Kubota ZG20 Attachments

Attachment Description Purpose Price (Approximate)
Grass Catcher Bagging system for clippings Collecting grass clippings $500 – $800
Mulching Kit Mulches grass for a manicured look Mulching and lawn care $150 – $300
Rear Bagger Rear-mounted bagging system Collecting grass clippings $600 – $900
Front Blade Front-mounted blade for snow or debris Snow removal and grading $300 – $500
Snow Blower Snow-throwing attachment Snow removal $1,000 – $1,500
Rotary Tiller Tilling and soil preparation Soil cultivation $700 – $1,000
Broom Attachment Sweeping and debris clearing Cleaning pathways $400 – $700
Loader Bucket Front-end loader bucket Loading and carrying $800 – $1,200
Pallet Forks Forklift-style attachment Moving pallets and more $400 – $600
Landscape Rake Raking and leveling soil Landscaping and grading $400 – $700

Kubota ZG20 Overview

In straightforward terms, the Kubota ZG20 is a zero-turn lawnmower that boasts a powerful 20 HP gasoline engine.

Its impressive cutting width of 48 inches ensures you can tackle large lawns with speed and precision. The hydrostatic transmission and zero-turn radius make maneuvering a breeze, even in tight spaces.


  • Spark Plugs: Keep the engine firing smoothly.
  • Air Filters: Ensure clean air intake for optimal performance.
  • Belts: Essential for driving the mower deck and other components.
  • Blades: Sharp blades for a clean cut.
  • Oil Filters: Maintain engine health.

Kubota ZG20 Problems

  • Engine Problems: Occasional engine starting or performance issues.
  • Cutting Deck Issues: Problems with the mower deck, such as uneven cutting.
  • Hydrostatic Transmission: Transmission-related issues, including loss of power.
  • Electrical Troubles: Wiring, battery, or lighting problems.
  • Belt Wear: Wear and tear on drive and deck belts.
  • Steering and Control: Steering or control mechanism difficulties.
  • Fuel System Concerns: Fuel filter clogs or fuel quality problems.
  • Blade Engagement: Issues with engaging or disengaging mower blades.

Kubota ZG20 Oil and Capacity

Proper lubrication is crucial for your Kubota ZG20’s engine. You’ll need about 2 quarts of 10W-30 engine oil. Don’t forget to replace the oil filter during oil changes.

Prices for engine oil vary, but you can expect to spend around $6 to $10 per quart. It’s recommended to change the oil every 50 hours of operation.

Kubota ZG20 Review

The Kubota ZG20 is a robust commercial-grade zero-turn mower celebrated for its durability, high performance, and comfort. It is driven by a powerful 20 HP Kohler V-Twin engine and boasts a 48-inch deck equipped with three blades.

With a hydrostatic transmission and a wet clutch PTO, the ZG20 offers both ease of operation and straightforward maintenance, making it a popular choice among users.

Full review YouTube video check here.

FAQs – Kubota ZG20

Is the Kubota ZG20 suitable for residential use?

Yes, it’s ideal for homeowners with larger lawns.

How often should I sharpen the blades?

Blades should be sharpened at the start of each mowing season.

Can I use the Kubota ZG20 for commercial purposes?

Absolutely, its durability makes it suitable for commercial use.

What’s the warranty on a new Kubota ZG20?

It typically comes with a 2 to 4-year warranty, depending on the dealer.

Is it easy to change the oil filter myself?

Yes, with the right tools and knowledge, it’s a straightforward process.

Does it come with a bagger attachment?

Bagger attachments are sold separately.

Can I use the Kubota ZG20 on hilly terrain?

It’s not recommended for steep slopes.

How do I clean the mower deck?

Use a hose or pressure washer to remove grass clippings.

Can I use E85 ethanol fuel in the Kubota ZG20?

No, it’s best to use regular unleaded gasoline.

🌟 Conclusion 🌟

Thank you for joining us on this exhilarating ride through the world of the Kubota ZG20! This powerhouse lawnmower is a testament to innovation and efficiency.

Whether you’re a homeowner or a professional landscaper, the ZG20 is sure to make your mowing experience a breeze. Happy mowing! 🌿🌞

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