MowerFacts
Home › Australia › Push / Walk-Behind › Cox › 20 in LawnMaster Cylinder Mower

Cox 20" LawnMaster Cylinder Mower

Push / Walk-Behind mower · Model LM20CM · Residential-duty · Gas

A$4,299 Cox Australia RRP (inc. GST)

Recommended retail price in Australian dollars, read 13 Oct 2026 from the Cox Australia product page.

Sold in Australia — listed on coxmowers.com.au, checked 13 Oct 2026.

Dealers set the final price; delivery, assembly and any local offer are extra and are not tracked here.

The Cox 20 in LawnMaster Cylinder Mower is a residential-grade gas walk-behind mower, suited to small-to-mid home lawns, with a 20-inch deck and a 127cc engine making 3.5 hp. It weighs 198.4 lb (90 kg).

At a glance

Power Source
gas
Cutting Width
20 in (508 mm)
Displacement
7.8 ci (127 cc)
Weight
198 lbs (90 kg)
Compare similar mowers See how this mower compares with machines of a similar size and purpose.
  • Deck 508 mm (20 in) · Loncin G200F, OHV Engine, 196 cc · RRP A$2,199
    Displacement 196 cc (12 ci) (this model: 127 cc (7.8 ci))Max cut height 20 mm (0.8 in) (this model: 30 mm (1.2 in))
    Why: Same class: push / walk-behind · Same 20 in deck · Gas engine, like this model · Residential-duty, like this model · By Bushranger, a different maker
    Compare with the 20 in LawnMaster Cylinder Mower ›
  • Deck 508 mm (20 in) · Air cooled, single cylinder, OHV, horizontal shaft, normally aspirated petrol four-stroke engine, 163 cc · RRP A$2,549
    Displacement 163 cc (9.9 ci) (this model: 127 cc (7.8 ci))Weight 68 kg (150 lbs) (this model: 90 kg (198 lbs))
    Why: Same class: push / walk-behind · Same 20 in deck · Gas engine, like this model · Residential-duty, like this model · By Victa, a different maker
    Compare with the 20 in LawnMaster Cylinder Mower ›
  • Deck 510 mm (20.1 in) · Briggs & Stratton OHV 5.0HP, 163 cc · RRP A$2,699
    Displacement 163 cc (9.9 ci) (this model: 127 cc (7.8 ci))Weight 65 kg (143 lbs) (this model: 90 kg (198 lbs))
    Why: Same class: push / walk-behind · 20.1 in deck, within 2 in of this model's 20 in · Gas engine, like this model · Residential-duty, like this model · By Masport, a different maker
    Compare with the 20 in LawnMaster Cylinder Mower ›
  • Deck 530 mm (20.9 in) · 4.3 hp, 163 cc
    Max cut height 82 mm (3.2 in) (this model: 30 mm (1.2 in))Weight 62 kg (137 lbs) (this model: 90 kg (198 lbs))
    Why: Same class: push / walk-behind · 20.9 in deck, within 2 in of this model's 20 in · Gas engine, like this model · Residential-duty, like this model · 4.3 hp (this model: 3.5 hp) · By Kubota, a different maker
    Compare with the 20 in LawnMaster Cylinder Mower ›
  • Deck 483 mm (19 in) · Briggs and Stratton, 161 cc · RRP A$2,099
    Max cut height 67 mm (2.6 in) (this model: 30 mm (1.2 in))Weight 59 kg (130 lbs) (this model: 90 kg (198 lbs))
    Why: Same class: push / walk-behind · 19 in deck, within 2 in of this model's 20 in · Gas engine, like this model · Residential-duty, like this model · By Bushranger, a different maker
    Compare with the 20 in LawnMaster Cylinder Mower ›

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

Cox 20 in LawnMaster Cylinder Mower engine specifications
Power Sourcegas
Displacement7.8 ci (127 cc)
Engine Power3.5 hp
Engine MakeBriggs & Stratton
Engine ModelBriggs & Stratton XR550 127cc (3.5HP)

Deck

Cox 20 in LawnMaster Cylinder Mower deck specifications
Cutting Width20 in (508 mm)
Min Cut Height0.2 in (6 mm)
Max Cut Height1.2 in (30 mm)

Dimensions

Cox 20 in LawnMaster Cylinder Mower dimensions specifications
Weight198 lbs (90 kg)
Width20 in (508 mm)

Similar models

Other push / walk-behind mowers with comparable specs — including other brands — that buyers cross-shop with the 20 in LawnMaster Cylinder Mower.

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 Cox’s own numbers — not published by the manufacturer.

Gate & trailer fit

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

Needs at least 20 in of clearance.

Power & run time

  • Power per deck inch0.175 hp/in

Fit uses Cox's published overall width.

Source: Cox (manufacturer) · archived copy

Suggest a correction