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Simplicity SunStar 20

Simplicity SunStar 20 tractor
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The Simplicity SunStar 20 is a garden tractor produced from 1987 to 1997 by Simplicity in Port Washington, Wisconsin, USA. It features a 20 hp Kohler engine with two variants, a hydrostatic transmission, and a variety of attachments including mower decks, snowblowers, blades, and front-end loaders. It has a two-wheel drive with mechanical rear differential lock on earlier models, power steering, and mechanical drum brakes. The tractor offers optional rear and front PTOs and is designed with an open operator station.
SimplicitySunStar 20garden tractorlawn tractorKohler enginehydrostatic transmissionmower decksnowblowerfront-end loader
Power-
Founded-
ModelSunStar 20

Technical Specifications

Detailed specifications and technical data for Simplicity SunStar 20

Engine

Fuel tank:4.25 gal (16.1 L)
Starter 1:electric
Starter 2:electric
Rated RPM 1:3400
Rated RPM 2:3600
Sparkplug 1:Champion RV15YC
Air cleaner 1:dual element
Air cleaner 2:dual element
Bore/Stroke 1:3.125x3.063 inches (79 x 78 mm)
Bore/Stroke 2:3.03x2.64 inches (77 x 67 mm)
Compression 1:6.6:1
Displacement 1:770 cc (46.98 ci)
Displacement 2:622 cc (38 ci)
Engine options:20HP Kohler 770cc 2-cyl gasoline, 20HP Kohler 622cc 2-cyl gasoline
Oil capacity 1:1.75 qts (1.7 L)
Oil capacity 2:2 qts (1.9 L)
Engine detail 1:Kohler M20, gasoline, 2-cylinder, air-cooled horizontal-shaft opposed-twin, Full-pressure lubrication. The Kohler Magnum was used through the 1994 model year.
Engine detail 2:Kohler Command CH20S, gasoline, 2-cylinder, air-cooled horizontal-shaft opposed-twin, The Kohler Command engine was used in the SunStar 20 from 1995 through 1997.
Power (gross) 1:20 hp (14.9 kW)
Power (gross) 2:20 hp (14.9 kW)
Sparkplug gap 1:0.025 inches (0.635 mm)
Starter volts 1:12
Starter volts 2:12

Features

Drive:Two-wheel drive
Brakes:Mechanical drum brakes
Power steering:Yes
Operator station:Open operator station
Differential lock:mechanical rear (on models built from 1987 to 1994)

Variants

1920H:similar AGCO model
2920H:similar Massey Ferguson model

Dimensions

Width:38.25 inches (97 cm)
Length:78 inches (198 cm)
Weight:873 to 1108 pounds
Rear tire:23x10.5-12
Wheelbase:51 inches (129 cm)
Front tire:16x6.50-8
Weight details:873 lbs (395 kg), 1051 lbs (476 kg) with 46-inch deck, 1108 lbs (502 kg) with 60-inch deck
Height (steering wheel):47 inches (119 cm)

Electrical

Ground:negative
Battery CCA:400
Battery volts:12
Charging amps:15
Charging system:flywheel alternator

Production

Series:SunStar Series
Built in:Port Washington, Wisconsin, USA
Category:Garden tractor
Original price:$6,549 (1990), $6,810 (1991), $7,350 (1993), $7,400 (1994), $7,700 (1996), $7,950 (1994)
Years produced:1987 - 1997

Attachments

Blade:46 inches width (116 cm), front-mount, 157 lbs (71 kg), manual-angle and hydraulic-angle (Optional), Simplicity 1691000
Additional:A 38-inch tiller was available. The tiller required a rear lift kit (1691765) and rear PTO. Tiller required the appropriate gear box for the PTO (2000 or 3400 RPM).
Snowblower:42 inches width (106 cm), single-stage, front-mount, 218 lbs (98 kg), Simplicity 1690982
Snow blower:two-stage, front-mount, 300 lbs (136 kg), Simplicity 1691360

Front-end loader

Model:1691309 Loader
Weight:479 lbs (217 kg)
Boom rod:1.00 inches (2 cm)
Bucket rod:1.00 inches (2 cm)
Dump angle:41°
Dump reach:12.5 inches (31 cm)
Bucket width:38 inches (96 cm), 48 inches (121 cm)
Ground reach:42.5 inches (107 cm)
Boom cylinder:1.50 inches (3 cm)
Height at pin:72 inches (182 cm)
Lift capacity:400 lbs lift (full at pin) (181 kg)
Breakout force:500 lbs breakout (at pin) (226 kg)
Dump clearance:55 inches (139 cm)
Rollback angle:16° (ground line)
Bucket cylinder:1.50 inches (3 cm)
48" mid-mount mower deck:48 inches (121 cm), 3-blade, 184 lbs (83 kg), Simplicity 1690986
60" mid-mount mower deck:60 inches (152 cm), 3-blade, 328 lbs (148 kg), Simplicity 1691339

Transmission

Type:shaft-driven hydrostatic
Gears:infinite forward and reverse (2-range)
Oil type:ATF F
Transaxle:Peerless 2600
Oil capacity:6 qts (5.7 L)
Transmission:Sundstrand 15

Tractor hitch

Rear Type:0 (Optional)

Power Take-off (PTO)

Rear PTO:independent (Optional)
Front PTO:independent
Clutch rear:electric
Clutch front:electric
Rear PTO Type:2000, 3400
Front PTO Type:pulley