Sears Suburban 12 917.99420 Engine

Sears Suburban 12 917.99420 lawn tractor photo
1966 - 1971
Model year
Suburban Series
Garden tractor
David Bradley built
Series map:
Suburban 10
Suburban 12
Engine Detail
Tecumseh HH120
air-cooled horizontal-shaft
Displacement453 cc
27.66 ci
Bore/Stroke3.50x2.875 inches
89 x 73 mm
Power (gross)12 hp
8.9 kW
Fuel systemcarburetor
Rated RPM3600
Starter volts12
Sparkplug gap0.030 inches
0.762 mm
Point gap0.020 inches
0.508 mm
Intake valve clearance0.010 inches
0.254 mm
Exhaust valve clearance0.020 inches
0.508 mm
Engine Oil
Suburban 12 917.99420 gasoline engine oil chart
Oil change25 h
Page information
Peter Easterlund - owner of
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Peter Easterlund - owner/author
Updated on August 20, 2015
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