Toro 520 Engine

Toro 520 lawn tractor photo
1990 - 1997
Garden tractor

Note: the Toro model 520 is the same as the Wheel Horse 520-H. The following data is from the 520-H listing.
Engine Detail
Onan P220G
Displacement781 cc
47.7 ci
Bore/Stroke3.2580x2.875 inches
83 x 73 mm
Power20 hp
14.9 kW
Rated RPM3600
Idle RPM1400-3600
Starter volts12
Oil capacity1.7 qts
1.6 L
SparkplugChampion RS14YC
Sparkplug gap0.025 inches
0.635 mm
Page information
Peter Easterlund - owner of
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Peter Easterlund - owner/author
Updated on January 8, 2014
©2000-2023 -®. 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.