Simplicity lawn tractors

Simplicity SunRunner 12H

The Simplicity SunRunner 12H is a lawn tractor produced from 1987 to 1989 as part of the SunRunner Series. It features a 12 hp Briggs & Stratton 465cc 1-cylinder gasoline engine with electric start and a hydrostatic belt-driven transmission offering infinite forward and reverse speeds. The tractor has a front-mount mower and two-wheel drive with manual steering and mechanical band brakes. It includes a front independent PTO with a mechanical idler pulley clutch. Dimensions include a 40 inch wheelbase, 64 inch tractor length, and a weight of 529 lbs. Tires are lawn/turf type with 15x6-6.00 front and 4.1/3.5-4 rear sizes. Attachments include 36 and 42 inch front-mount mower decks with multiple cut height adjustments.

Power-

Founded-

ModelSunRunner 12H

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Technical Specifications

Detailed specifications and technical data for Simplicity SunRunner 12H

Tires

Rear tire	4.1/3.5-4
Front tire	15x6-6.00

Engine

Type	gasoline
Model	Briggs & Stratton 281707
Power	12 hp (8.9 kW)
Cooling	air-cooled vertical-shaft
Starter	electric
Cylinders	1-cylinder
Fuel tank	2 gal (7.6 L)
Bore/Stroke	3.44x3.06 inches (87 x 78 mm)
Displacement	465 cc (28.42 ci)
Starter volts	12
Oil change interval	25 h

Dimensions

Width	36 inches (91 cm)
Length	64 inches (162 cm) Tractor only, 83.75 inches (212 cm) total
Weight	529 lbs (239 kg)
Wheelbase	40 inches (101 cm)
Height (hood)	24.5 inches (62 cm)
Height (steering wheel)	42 inches (106 cm)

Electrical

Ground	negative
Battery volts	12

Mechanical

Drive	Two-wheel drive
Brakes	Mechanical band brakes
Steering	Manual steering
Operator station	Open operator station

Production

Series	SunRunner Series
Manufacturer	Simplicity
Years produced	1987 - 1989
Front-mount mower	yes

Attachments

36" front-mount mower deck	36 inches (91 cm) cutting width, total width 45 inches (114 cm), front-mount, 2-blade, cut height 1.25 to 2.75 inch (3 to 6 cm), 5 cut adjustments, weight 450 lbs (204 kg)
42" front-mount mower deck	42 inches (106 cm) cutting width, total width 57.5 inches (146 cm), front-mount, 3-blade, cut height 1.25 to 2.75 inch (3 to 6 cm), 5 cut adjustments, weight 485 lbs (219 kg)

Transmission