Bolens 1250 Engine


Bolens 1250 lawn tractor photo
1967 - 1969
Large Frame Series
Garden tractor
Series map:
1225
1250
1455
12.0hp
12.5hp
14.0hp
Engine Detail
Wisconsin S12D
gasoline
1-cylinder
air-cooled
Displacement473 cc
28.86 ci
Bore/Stroke3.50x3.00 inches
89 x 76 mm
Power12.5 hp
9.3 kW
Air cleanerdry
Rated RPM3600
Starterelectric
Starter volts12
Sparkplug gap0.030 inches
0.762 mm
Intake valve clearance0.007 inches (cold)
0.178 mm
Exhaust valve clearance0.016 inches (cold)
0.406 mm
Engine Oil
1250 gasoline engine oil chart
Oil capacity2 qts
1.9 L
Oil change50 h
Page information
Peter Easterlund - owner of TractorData.com
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Peter Easterlund - owner/author
Email: Peter@TractorData.com
Updated on January 11, 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.