Wheel Horse 312-8 Engine


Wheel Horse 312-8 tractor photo
1985 - 1997
300 Series
Garden tractor
Series map:
310-8
312-8
10.0hp
12.0hp
Engine Detail
Kohler K301S
gasoline
1-cylinder
air-cooled
Original engine. The K301 was used on the Wheel Horse 312-8 through the 1986 model year.
Displacement476 cc
29.07 ci
Bore/Stroke3.375x3.25 inches
86 x 83 mm
Power (gross)12 hp
8.9 kW
Starter volts12
Engine Detail
Kohler M12
gasoline
1-cylinder
air-cooled
The Kohler M12S replaced the K301 on the Wheel Horse 312-8 starting with the 1987 model year, tractor model code 21-12K804.
Displacement476 cc
29.1 ci
Bore/Stroke3.38x3.25 inches
86 x 83 mm
Power (gross)12 hp
8.9 kW
Compression6.6:1
Rated RPM3600
Starter volts12
SparkplugChampion RH10
Sparkplug gap0.025 inches
0.635 mm
Engine Oil
312-8 gasoline engine oil chart
Oil capacity2.5 qts
2.4 L
Page information
Peter Easterlund - owner of TractorData.com
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Updated on January 4, 2021
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