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Scheppach RM420 review

A 42 cm push mower with a seven-step central height adjustment and a wash-out port — the cheapest engine on this shelf, and the least of a machine.

The bottom line The entry point of the family and the narrowest deck in it. What it publishes is coherent — 42 cm, 45 L, seven central height steps from 25 to 75 mm — and what it leaves out is the displacement, the weight and whether the wheels are driven. The wash-out port is a genuine convenience on a machine you will be scraping.

What the maker prints on its own page

A four-stroke petrol mower with a 420 mm cutting width, quoted at 3.4 PS, with a 45-litre grass box carrying a level indicator and a central cutting-height adjustment offering seven steps between 25 and 75 mm. The deck has an integrated cleaning function with a hose connection, and engine oil is supplied.

The listing describes the machine as 3-in-1.

What that adds up to

A narrow-deck petrol mower with the conveniences of a more expensive one. The seven-step central adjustment is the feature worth noticing: a machine whose height is changed with one lever gets its height changed through the season, and a machine with four wheel bolts stays on one setting all year.

The wash-out port is the other. It is on the list of things that separate a machine you maintain from a machine you mean to maintain.

What is missing

The displacement, which every other engine on this shelf gives. The weight, which on a machine you push and store is not a detail. Any statement about a wheel drive — and at 42 cm a push machine is reasonable, but the listing does not say it is one.

And the guaranteed sound power level, which is required on the machine itself and is absent here as it is from all seven.

Availability

Around 150 €, read at the German Amazon store on the day of the survey.

Listed and unsold: the British, French, Italian and Spanish Amazon catalogues hold the reference with nobody behind it.

Nothing came back from the American Amazon store at all; the buy button there runs a search rather than opening an empty page.

Taken from Keepa on the day this page was last revised; stock and prices move without notice.

Prices quoted in this text were read on 26 September 2026. The live price is at the top of the page.

The declared figures, and the point they stop at

Strengths

  • Central height adjustment in seven steps, not four wheel bolts
  • A wash-out port on the deck, which is where the mat forms
  • Engine oil included, which on a first-fill machine is a real saving

Compromises

  • The narrowest deck in the family, on a shelf where petrol usually means width
  • No displacement, no weight and no guaranteed sound power level published
  • Nothing in the listing states a wheel drive, which at this width is the expected trade

Specifications

Cutting width420 mm, as stated
EngineFour-stroke petrol, 3.4 PS as stated
DisplacementNot published
Cutting heights25–75 mm, central adjustment in 7 steps
Catcher volume45 L, with a level indicator
DriveNot published — the listing states no wheel drive
Functions3-in-1, as stated
Guaranteed noiseNot published
WeightNot published
Amazon referenceB08CYYP1JV (one reference across 5 Amazon marketplaces)
EAN4046664086789

What this machine usually gets asked

Is 42 cm wide enough?

It is at the narrow end of the petrol shelf and about the width of a mid-range cordless machine. Cutting width is a dimension of the deck rather than a strip cleared, because every pass overlaps; on an open lawn a wider deck is faster, and in a garden with beds and corners it is not.

What does the water connection do?

It lets a hose be attached so the underside can be flushed after mowing. Grass left to dry under a deck sets into a mat that blocks the airflow the cut depends on, and on a steel deck it holds moisture against the metal.

How loud is it?

The listing does not say. Every machine of this type sold in the European Union carries a guaranteed sound power level marked on the housing, and this listing does not reproduce it — which is the case for all seven machines in this family.

Who this one is for

A small to medium lawn where an engine is wanted for the grass rather than for the area

Price and availability

A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom. Listed is not the same as in stock — availability changes daily.

Details checked on September 26, 2026.

Sources

Specifications: manufacturer sheet and Amazon product page. Prices and availability: Keepa. No product on this site has been physically tested.

How we assess products