Tractors > J.I. Case > 646

J.I. Case 646 Engine



J.I. Case 646 industrial tractor photo
1972 - 1980
600 Series
Industrial tractor
Series map:
644
646
14.0hp
16.5hp
Engine Detail
Onan CCKA
gasoline
2-cylinder
air-cooled horizontal-shaft
Displacement49.8 ci
0.8 L
Bore/Stroke3.25x3.00 inches
83 x 76 mm
Power16.5 hp
12.3 kW
Compression7:1
Rated RPM3600
Starterelectric
Starter volts12
SparkplugChampion H8
Sparkplug gap0.025 inches
0.635 mm
Point gap0.020 inches
0.508 mm
Intake valve clearance0.007 inches*Cold
0.178 mm
Exhaust valve clearance0.016 inches*Cold
0.406 mm
Engine Oil
646 gasoline engine oil chart
Oil capacity4 qts
3.8 L
Oil change50 h
Page information
Contact: Peter Easterlund
Updated on June 21, 2022
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