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Manufacturer-sourced values side by side. No performance equivalence or ranking is applied across different machine classes.

FeatureBolens 3212G ST120TractorSimplicity 4212Tractor
Tractor Main CategoryGarden and Lawn Care TractorsGarden and Lawn Care Tractors
Tractor TypeLawn TractorLawn Tractor
Horsepower8.9 kW8.9 kW
Weight210.0 kg—
Transmission TypeBelt-driven gear typeBelt-driven hydrostatic
Length175.0 cm160.0 cm
Years Made1987-19921987-1989
Engine ModelBriggs & Stratton 281707Briggs & Stratton
Engine Type4-stroke, air-cooled4-stroke, air-cooled, inline
Fuel TypeGasolineGasoline
Cylinders11
Displacement465 cc468 cc
Bore8.71 cm8.71 cm
Stroke7.80 cm7.80 cm
Middle PTO TypeIndependent with electric clutch—
Battery12 V, 45Ah12 V
StarterElectricElectric
Height107.0 cm100.0 cm
Width87.0 cm86.0 cm
Wheelbase114.0 cm115.0 cm
Fuel Tank Capacity18.9 l8.3 l
Oil Capacity1.4 l—
Transmission ModelPeerless 920—
Gears5 forward and 1 reverseInfinite forward and reverse
Chassis4×2 2WD4×2 2WD
Max. Travel Speed3.5 km/h4.8 km/h
BrakesDisc—
Cabin TypeOpen operator stationOpen operator station
Steering TypeManualManual
Front TiresAg: 15×6.00-6Lawn/turf: 15×6.00-6
Rear TiresAg: 20×8.00-10Lawn/turf: 18×8.50-8
Rated RPM—3600 RPM
Ground Clearance—15.0 cm
Sourceheavyequipments.net archive (imported 2026-10)heavyequipments.net archive (imported 2026-10)
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Side-by-side specification comparisons generated from the manufacturer-sourced model files. · 7,051