John Deere STX30 Engine


John Deere STX30 lawn tractor photo
1989 - 1993
Lawn tractor
Series:STX30STX38
Engine Detail
Kohler CF12.5-1216S
gasoline
1-cylinder
air-cooled vertical-shaft
Displacement398 cc
24.3 ci
Bore/Stroke3.425x2.638 inches
87 x 67 mm
Power9 hp
6.7 kW
Air cleanerpaper and foam
Compression8.9:1
Rated RPM3350
Starter volts12
SparkplugChampion RC12YC
Sparkplug gap0.040 inches
1.016 mm
Engine Oil
STX30 gasoline engine oil chart
Oil capacity2 qts
1.9 L
Oil change50 h
John Deere STX30 Engine
John Deere STX30 engine image
Image courtesy of Matthew Marchand
Page information
Contact: Peter Easterlund
Updated on January 14, 2021
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