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Masport President 550 ST S16.5 Combo

Push / Walk-Behind mower · Model 561805 · Residential-duty · Gas

A$499 Masport Australia RRP

Recommended retail price in Australian dollars, read 20 Oct 2026 from the Masport Australia product page. Whether it includes GST is not stated on the page.

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

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

The Masport President 550 ST S16.5 Combo is a residential-grade gas walk-behind mower, suited to small-to-mid home lawns, with a 17-inch deck and a 125cc engine. It weighs 50.7 lb (23 kg).

At a glance

Power Source
gas
Cutting Width
16.5 in (420 mm)
Displacement
7.6 ci (125 cc)
Weight
51 lbs (23 kg)
Compare this mower: Pick another Masport push / walk-behind or pick from every push / walk-behind mower sold in Australia   or quick compare: vs 100 ST 2'n1 · vs 200 ST 3'n1 · vs 2'n1 Time Saver - DOV
Compare similar mowers See how this mower compares with machines of a similar size and purpose.
  • Ozito PXC 36V (2x18V) 420mm Brushless Lawn Mower Kit
    Deck 420 mm (16.5 in)
    Weight 16.4 kg (36 lbs) (this model: 23 kg (51 lbs))Max cut height 75 mm (3 in) (this model: 68 mm (2.7 in))
    Why: Same class: push / walk-behind · Same 16.5 in deck · Gas engine, like this model · Residential-duty, like this model · By Ozito, a different maker
    Compare with the President 550 ST S16.5 Combo ›
  • Masport Lawn Marshal
    Deck 420 mm (16.5 in) · AL-KO OHV Series FIVE, 123 cc · RRP A$399
    Why: Same class: push / walk-behind · Same 16.5 in deck · Gas engine, like this model · Residential-duty, like this model · Also by Masport
    Compare with the President 550 ST S16.5 Combo ›
  • Victa 16 in 300E Ultralite Lawn Mower
    Deck 406 mm (16 in) · Briggs and Stratton 300E, 125 cc · RRP A$424
    Max cut height 75 mm (3 in) (this model: 68 mm (2.7 in))
    Why: Same class: push / walk-behind · 16 in deck, within 2 in of this model's 16.5 in · Gas engine, like this model · Residential-duty, like this model · By Victa, a different maker
    Compare with the President 550 ST S16.5 Combo ›
  • Victa 16 in V144 Steel Base Push Mower
    Deck 400 mm (15.7 in) · 144 cc · RRP A$369
    Displacement 144 cc (8.8 ci) (this model: 125 cc (7.6 ci))Weight 26 kg (57 lbs) (this model: 23 kg (51 lbs))
    Why: Same class: push / walk-behind · 15.7 in deck, within 2 in of this model's 16.5 in · Gas engine, like this model · Residential-duty, like this model · By Victa, a different maker
    Compare with the President 550 ST S16.5 Combo ›
  • Cox 17 in LawnMaster Cylinder Mower
    Deck 432 mm (17 in) · Briggs & Stratton Briggs & Stratton XR550 127cc (3.5HP), 3.5 hp, 127 cc · RRP A$3,949
    Weight 83 kg (183 lbs) (this model: 23 kg (51 lbs))Max cut height 30 mm (1.2 in) (this model: 68 mm (2.7 in))
    Why: Same class: push / walk-behind · 17 in deck, within 2 in of this model's 16.5 in · Gas engine, like this model · Residential-duty, like this model · By Cox, a different maker
    Compare with the President 550 ST S16.5 Combo ›

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

Masport President 550 ST S16.5 Combo engine specifications
Power Sourcegas
Displacement7.6 ci (125 cc)
Start TypePrimer
Engine MakeBriggs & Stratton
Engine Model300

Deck

Masport President 550 ST S16.5 Combo deck specifications
Cutting Width16.5 in (420 mm)
Min Cut Height0.5 in (12 mm)
Max Cut Height2.7 in (68 mm)
Deck MaterialSteel
Blades2
Cut Positions6
DischargeCatch, Mulch

Drive

Masport President 550 ST S16.5 Combo drive specifications
Drive SystemPush

Dimensions

Masport President 550 ST S16.5 Combo dimensions specifications
Weight51 lbs (23 kg)

General

Masport President 550 ST S16.5 Combo general specifications
Bagger Capacity1.2 bu (42 L)

Similar models

Other push / walk-behind mowers with comparable specs — including other brands — that buyers cross-shop with the President 550 ST S16.5 Combo.

POWER+ 42cm Self-Propelled Mower with LED Screen EGO · 16.5 in (420 mm)
POWER+ 42cm Push Mower EGO · 16.5 in (420 mm)
16 in 300E Ultralite Lawn Mower Victa · 16 in (406 mm)
POWER+ 42cm Self-Propelled Mower EGO · 16.5 in (420 mm)
POWER+ 42cm Push Mower with LED screen EGO · 16.5 in (420 mm)
HRG416 Battery Honda · 16.1 in (410 mm)

See all Masport 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 Masport’s own numbers — not published by the manufacturer.

Gate & trailer fit

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

Needs at least 23 in of clearance (estimated).

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

Source: Masport (manufacturer) · archived copy

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