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Kubota W821S

Push / Walk-Behind mower · Model W821S · Residential-duty · Gas

Kubota Australia doesn’t publish a recommended retail price for this model online — it’s dealer quote only. The Kubota Australia product page is the place to start.

Sold in Australia — listed on kubota.com.au, checked 20 Oct 2026.

The Kubota W821S is a residential-grade gas walk-behind mower, suited to small-to-mid home lawns, with a 21-inch deck and a 163cc engine making 4.3 hp. It weighs 116.8 lb (53 kg).

At a glance

Power Source
gas
Cutting Width
20.9 in (530 mm)
Displacement
9.9 ci (163 cc)
Drive Type
Self-propelled
Weight
117 lbs (53 kg)
Compare this mower: Pick another Kubota push / walk-behind or pick from every push / walk-behind mower sold in Australia   or quick compare: vs W821SC
Compare similar mowers See how this mower compares with machines of a similar size and purpose.
  • Bushranger 53AH6IMSP, 800SP Series Self-Propelled Lawn Mower
    Deck 533 mm (21 in) · Honda GXV160, 163 cc · RRP A$1,899
    Fuel capacity 1.5 L (0.4 gal) (this model: 1.8 L (0.5 gal))
    Why: Same class: push / walk-behind · 21 in deck, within 2 in of this model's 20.9 in · Gas engine, like this model · Residential-duty, like this model · By Bushranger, a different maker
    Compare with the W821S ›
  • Honda HRX217
    Deck 530 mm (20.9 in) · 201 cc · RRP A$1,799
    Fuel capacity 0.9 L (0.2 gal) (this model: 1.8 L (0.5 gal))Max cut height 101 mm (4 in) (this model: 77 mm (3 in))
    Why: Same class: push / walk-behind · Same 20.9 in deck · Gas engine, like this model · Residential-duty, like this model · By Honda, a different maker
    Compare with the W821S ›
  • Bushranger 53AL7IMSP, 800SP Series Self-Propelled Lawn Mower
    Deck 533 mm (21 in) · Air cooled, single cylinder OHV, vertical shaft, normally aspirated petrol four stroke engine, 196 cc · RRP A$1,399
    Displacement 196 cc (12 ci) (this model: 163 cc (9.9 ci))Fuel capacity 1.5 L (0.4 gal) (this model: 1.8 L (0.5 gal))
    Why: Same class: push / walk-behind · 21 in deck, within 2 in of this model's 20.9 in · Gas engine, like this model · Residential-duty, like this model · By Bushranger, a different maker
    Compare with the W821S ›
  • Kubota W821SC
    Deck 530 mm (20.9 in) · 4.3 hp, 163 cc
    Weight 62 kg (137 lbs) (this model: 53 kg (117 lbs))Max cut height 82 mm (3.2 in) (this model: 77 mm (3 in))
    Why: Same class: push / walk-behind · Same 20.9 in deck · Gas engine, like this model · Residential-duty, like this model · 4.3 hp (this model: 4.3 hp) · Also by Kubota
    Compare with the W821S ›
  • Honda HRN536
    Deck 530 mm (20.9 in) · 166 cc · RRP A$1,299
    Fuel capacity 0.9 L (0.2 gal) (this model: 1.8 L (0.5 gal))Max cut height 100 mm (3.9 in) (this model: 77 mm (3 in))
    Why: Same class: push / walk-behind · Same 20.9 in deck · Gas engine, like this model · Residential-duty, like this model · By Honda, a different maker
    Compare with the W821S ›

Chosen by stated rules, not opinion: same class, a deck within 2 in of this one, the same kind of power and a compatible duty class, then the closest power, weight and price, with other makers preferred. Figures are the manufacturers’ published ones; nothing is estimated.

Engine

Kubota W821S engine specifications
Power Sourcegas
Displacement9.9 ci (163 cc)
Engine Power4.3 hp
Cylinders1

Deck

Kubota W821S deck specifications
Cutting Width20.9 in (530 mm)
Min Cut Height0.6 in (15 mm)
Max Cut Height3 in (77 mm)

Drive

Kubota W821S drive specifications
Drive TypeSelf-propelled

Dimensions

Kubota W821S dimensions specifications
Weight117 lbs (53 kg)
Fuel Capacity0.5 gal (1.8 L)

General

Kubota W821S general specifications
Bagger Capacity2.1 bu (75 L)

Similar models

Other push / walk-behind mowers with comparable specs — including other brands — that buyers cross-shop with the W821S.

54V XR FLEXVOLT Push Lawn Mower (Tool Only) DeWalt · 20.9 in (530 mm)
2x18V XR Self-Propelled Lawn Mower - 2 x 8 Ah DeWalt · 20.9 in (530 mm)
HRU216 Honda · gas
53AH6IMSP, 800SP Series Self-Propelled Lawn Mower Bushranger · 21 in (533 mm)
RMA 756 V Battery Lawn Mower STIHL · 21.3 in (540 mm)
POWER+ 52cm Select Cut Mower with Touch Drive Self-Propelled… EGO · 20.5 in (520 mm)

See all Kubota mowers and specs ›

Spot a wrong spec? Suggest a correction.

Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.

What the specs work out to

Figures MowerFacts computes from Kubota’s own numbers — not published by the manufacturer.

Gate & trailer fit

  • 32 in gateFits
  • 36 in gateFits
  • 48 in gateFits

Needs at least 27 in of clearance (estimated).

Power & run time

  • Power per deck inch0.206 hp/in
  • Run time per tank~0.5 h

Fit uses the deck width plus 6 in for the discharge chute, because Kubota doesn't publish an overall width — measure before buying if a gate is tight.

Run time assumes a typical 1 gal/hour burn at working load; real consumption varies with engine, load and cut.

Source: Kubota (manufacturer) · archived copy

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