John Deere 650 and 750 Tractors Specifications

About these models: Built from 1981-89, the 650 (14.5 hp) and 750 (18 hp) Yanmar-powered tractors were among Deere’s first true sub-30-hp compacts, offering a two-range, eight-speed gearbox, live hydraulics and transmission-driven PTO for acreage and estate chores.

Horsepower (Factory-Observed PTO)

Specification 650 Tractor 750 Tractor
Horsepower 10.8 kW (14.5 hp) @ 2600 rpm 13.4 kW (18.0 hp) @ 2400 rpm

Engine

Specification 650 Tractor 750 Tractor
Type 2-cyl in-line, valve-in-head, diesel 3-cyl in-line, valve-in-head, diesel
Slow idle speed 800 rpm 800 rpm
Fast idle speed 2725 rpm 2540 rpm
Working speed range 1825–2600 rpm 1650–2400 rpm
Bore × stroke 80 × 85 mm (3.15 × 3.35 in) 80 × 85 mm (3.15 × 3.35 in)
Displacement 0.9 L (52 cu in) 1.3 L (78 cu in)
Compression ratio 22.5 : 1 22 : 1
Firing order (No. 1 at rear) 1-2 1-3-2
Valve clearance (hot) Int 0.20 mm / Exh 0.20 mm Int 0.15 mm / Exh 0.15 mm
Injection-pump timing 22° BTDC (both models)
Lubrication system Pressurised, full-flow filter (both)

Fuel System

Specification 650 Tractor 750 Tractor
Type Pre-combustion chamber (both)
Injection-pump type Plunger (both)
Air cleaner Dry-type (both)

Cooling System

Specification 650 Tractor 750 Tractor
Type Pressurised, centrifugal pump
Temperature control Heavy-duty thermostat

Capacities

Capacity 650 Tractor 750 Tractor
Fuel tank 23.5 L (6.2 US gal) 23.5 L (6.2 US gal)
Cooling system 3.8 L (4.0 US qt) 4.3 L (4.5 US qt)
Crankcase (w/ filter) 2.4 L (2.5 US qt) 3.8 L (4.0 US qt)
Trans-hydraulic 13.2 L (14 US qt) 14.2 L (15 US qt)
Front-axle housing (4WD) 3.0 L (3.2 US qt) 6.5 L (6.9 US qt)

Transmission

Specification 650 & 750 Tractor
Type 2-range + 4-gear selector (8 F / 2 R)
Clutch Single-disk, dry

Power Take-Off

Specification 650 Tractor 750 Tractor
Type Transmission-driven, over-running clutch
PTO speed (engine speed) 540 rpm @ 2356 rpm 540 rpm @ 2295 rpm
Shaft size 35 mm (1-3/8 in)
Clutch Uses transmission clutch

Hydraulic System

Specification 650 & 750 Tractor
Type Open-center, constant-flow
Working pressure 139 bar (2 030 psi)
Pump Gear, engine-driven

Brakes

Specification 650 Tractor 750 Tractor
Type Mechanical dry, internal expanding shoe

Electrical System

Specification 650 & 750 Tractor
System type 12-volt, negative ground
Battery Group 24, 370 CCA, 106-min reserve
Alternator 15 amp

Dimensions

Dimension 650 Tractor 750 Tractor
Wheelbase 1425 mm (56 in) 1550 mm (61 in)
Overall length 2606 mm (102.5 in) 2845 mm (112.0 in)
Height to muffler top* 1965 mm (77.4 in) 2004 mm (78.9 in)
Height to ROLL-GARD top* 1865 mm (73.4 in) 1904 mm (75.0 in)
Overall width 1041 mm (41.0 in) 1132 mm (44.6 in)
Turning radius (w/ brakes) 1.9 m (6.2 ft) 2.2 m (7.2 ft)

Shipping Weight**

Model Weight
650 Tractor 690 kg (1 520 lb)
750 Tractor 817 kg (1 800 lb)

*650 on 9.5-16 rear / 5.00-12 front; 750 on 9.5-24 rear / 4.00-15 front. Add 50 kg (110 lb) for 4WD on 650 and 84 kg (186 lb) on 750.
**Shipping weight = tractor ready for field service, no fuel or ballast.

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