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Lawn Tractor · 1961Unverified
Simplicity 400 990234
Simplicity 400 990234 — Wonder Boy Series · 4 hp. Reference specifications; pending source verification.
The Simplicity 400 990234 is a lawn tractor with an approximate engine power output of 4 hp, positioning it at the lower end of its class in terms of power. This model was manufactured between 1961 and 1964. It features a 1-cylinder petrol air-cooled engine and a two-wheel drive system with a 2-speed gearbox, with an operating weight of 27 kg. The Simplicity 400 990234 is suitable for operations covering up to 200 acres.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
4 hp
Weight
27 kg
Catalogue coverage
Variants represented
2
Richest spec table
27 rows
Recorded power
4 hp
Transmissions
2-speed gear
Production years
1961-1964
Verified variants
0
No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.
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Overview
ManufacturerSimplicityReference
Riding lawn mowerReference
Built in Port Washington, Wisconsin, USAReference
Original price was $325 in 1963Reference
Two-wheel driveReference
Manual steeringReference
Open operator station.Reference
Engine
4HP Briggs & Stratton 1-cyl gasolineReference
Briggs & StrattonReference
gasolineReference
1-cylinderReference
air-cooledReference
Power3.0 kWReference
Starter typemanual recoilReference
Transmission
2-speed gearReference
Typebelt-driven gearReference
Gears2 forward and reverseReference
Dimensions
Front tire10x2.50Reference
Rear tire4.00x8Reference
Weight27 kgReference
Lawn/turf front10x2.50Reference
Lawn/turf rear4.00x8Reference
Simplicity 400 attachments
24" mid-mount mower deckReference
24" Mower deck
Typemid-mount SimplicityReference
Type1-blade with manual liftReference
Cutting width60 cmReference
Cut height3 to 6 cmReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
