I have a JD 750, this info is from my 650/750 Tech (service) manual:
14.5 PTO HP at 2600 RPM
Bore and stroke: 3.15x3.35 inch
Displacement: 52 CI
Compression ratio: 22.5:1
Capacities:
Fuel: 6.2 gal
Cooling system: 3.7 qts
Crankcase (with filter change): 2.6 qts
transmission-hydraulic: 14 qts
Front wheel drive axle housing (w/MFWD) 3.2 qts
Clutch: single-disk, dry
PTO:
Transmission driven with overrunning clutch
PTO speed (engine RPM) 540 (2350)
Clutch: uses transmission clutch
Hydraulic system:
Type: Open center, constant flow
Working pressure: 2000 psi
Pump: gear pump driven by engine
Brakes:
mechanical dry, internal expanding shoe
Electrical:
Battery: 12 volt, BCI group 24, 370 CCA
Alternator: 15 amp
Dimensions:
Wheel base: 56 inches
Overall length: 102.5 inches
Overall width: 41 inches
Turning radius with brakes: 6.2 feet
Shipping weight: (equipped for average field service, without fuel and
ballast)
wo/MFWD 1450 lbs
w/MFWD 1530 lbs