John Deere AOS Engine


John Deere AOS tractor photo
1935 - 1949
Standard-tread tractor
Engine Detail
John Deere
all fuel
2-cylinder
liquid-cooled horizontal twin
Displacement:309 ci
5.1 L
Bore/Stroke:5.50x6.50 inches
140 x 165 mm
Cooling system:thermo-siphon
Air cleaner:oil bath
Compression:3.96:1
Rated RPM:975
Firing order:1-2
Oil capacity:9.25 qts
8.8 L
Coolant capacity:32 qts
30.3 L
Sparkplug gap:0.030 inches
0.762 mm
Page information
Last update:August 9, 2021
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