· 1987 Unverified Simplicity SunRunner 12H Simplicity SunRunner 12H — SunRunner Series · 12 hp. Reference specifications; pending source verification.
The Simplicity SunRunner 12H is a lawn tractor model with a rated output of 12 hp, placing it in the middle of its class in terms of power. It was manufactured from 1987 to 1989 and features a 1-cylinder petrol air-cooled engine, powering a two-wheel drive system via a hydrostatic transmission. The listed weight of the SunRunner 12H is 239 kg, and it is designed for use on areas of approximately up to 200 acres.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Richest spec table
44 rows
Production years
1987-1989
No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.
Specifications Description Maintenance Troubleshooting Ownership Reviews Q&A Docs & sources
Hover a source tag to verify UK metric US imperial
Manufacturer Simplicity Reference
Front-mount mower Reference
Two-wheel drive Reference
Manual steering Reference
Mechanical band brakes Reference
Open operator station. Reference
12G gear Reference
12H hydrostatic Reference
12HP Briggs & Stratton 465cc 1-cyl gasoline Reference
Fuel tank 7.6 L Reference
Briggs & Stratton 281707 Reference
gasoline Reference
1-cylinder Reference
air-cooled vertical-shaft Reference
Displacement 28.42 ci Reference
Bore/Stroke 87 x 78 mm Reference
Power 8.9 kW Reference
Starter electric Reference
Starter volts 12 Reference
Oil change 25 h Reference
Image courtesy of Joe Hancaviz Reference
hydrostatic Reference
Type belt-driven hydrostatic Reference
Gears infinite forward and reverse Reference
Oil type Simplicity Multipurpose Hydraulic/Transmission Oil Reference
Front PTO independent Reference
Clutch mechanical ilder pulley Reference
Wheelbase 101 cm Reference
Weight 239 kg Reference
Front tire 15x6-6.00 Reference
Rear tire 4.1/3.5-4 Reference
Lawn/turf front 15x6-6.00 Reference
Lawn/turf rear 4.1/3.5-4 Reference
Length 162 cm Reference
Length 212 cm Reference
Width 91 cm Reference
Height (steering wheel) 106 cm Reference
Height (hood) 62 cm Reference
36" front-mount mower deck Reference
42" front-mount mower deck Reference
Ground negative Reference
Battery volts 12 Reference
36" front-mount mower deck Reference
42" front-mount mower deck Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
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Request a quote Who it suits Operation size Up to 200 ac
Budget class Entry
Is it right for you? Operation size Under 200 ac 200–1,500 ac 1,500+ ac
Need a front loader? Yes No
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