Simplicity SunStar 20 Engine

Simplicity SunStar 20 lawn tractor photo
1987 - 1997
SunStar Series
Garden tractor
Series map:
SunStar 18
SunStar 20
Engine options
20HP Kohler 770cc 2-cyl gasoline
20HP Kohler 622cc 2-cyl gasoline
Engine Detail
Kohler M20
air-cooled opposed-twin
Full-pressure lubrication. The Kohler Magnum was used through the 1994 model year.
Displacement770 cc
46.98 ci
Bore/Stroke3.125x3.063 inches
79 x 78 mm
Power (gross)20 hp
14.9 kW
Air cleanerdual element
Rated RPM3400
Starter volts12
Oil capacity1.75 qts
1.7 L
SparkplugChampion RV15YC
Sparkplug gap0.025 inches
0.635 mm
Engine Detail
Kohler Command CH20S
air-cooled opposed-twin
The Kohler Command engine was used in the SunStar 20 from 1995 through 1997.
Displacement622 cc
38 ci
Bore/Stroke3.03x2.64 inches
77 x 67 mm
Power (gross)20 hp
14.9 kW
Air cleanerdual element
Rated RPM3600
Starter volts12
Oil capacity2 qts
1.9 L
Page information
Peter Easterlund - owner of
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Peter Easterlund - owner/author
Updated on September 25, 2023
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