Wheel Horse 312-8 Engine


Wheel Horse 312-8 lawn 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
Copyright 2023 TractorData.com®
TractorData is a family-owned small business located in Minnesota that has been providing reference information on tractors since 1999.
Peter Easterlund - owner/author
Email: Peter@TractorData.com
Updated on January 4, 2021
©2000-2023 - TractorData.com®. Notice: Every attempt is made to ensure the data listed is accurate. However, differences between sources, incomplete listings, errors, and data entry mistakes do occur. Consult official literature from the manufacturer before attempting any service or repair.