11 material differences · fewer than 12

Tractor oneUTB U-650/651 M1973–1990No measured PTO figureTractor twoZETOR 67111972–1977No measured PTO figure

Which should you choose?

Read our verdict on the U-650/651 M and the 6711 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

11 material differences · 4 fields identical or within 5%, which is not counted as material

UTB U-650/651 M and ZETOR 6711, field by field
Field	U-650/651 M	6711	Gap
Engine
Engine power, claimed claimed	64.1 hp	64.1 hp	—
Engine declared	UTB D-110	ZETOR Z-6701	differs
Displacement declared	4.76 L	3.46 L	+38% U-650/651 M
Maximum torque declared	213 lb·ft · 289 N·m	148 lb·ft · 201 N·m	+44% U-650/651 M
Transmission
Top speed declared	16.8 mph · 27 km/h	15.5 mph · 25 km/h	+8% U-650/651 M
Clutch declared	—	Pedal-actuated, dry two-stage ZETOR double clutch with mechanical clutch booster	—
Hydraulics & hitch
Pump flow declared	10.6 gpm · 40.0 L/min	5.3 gpm · 20.0 L/min	+100% U-650/651 M
Pressure declared	1,856 psi · 128 bar	—	—
Rear PTO speeds declared	540 rpm	540 rpm	—
Weight & dimensions
Unladen weight declared	7,452 lb · 3,380 kg	5,776 lb · 2,620 kg	+29% U-650/651 M
Wheelbase declared	95.7 in · 2,431 mm	88.5 in · 2,247 mm	+8% U-650/651 M
Length declared	156.3 in · 3,970 mm	144.5 in · 3,670 mm	+8% U-650/651 M
Width declared	73.2 in · 1,859 mm	70.5 in · 1,790 mm	—
Height, over the steering wheel declared	74.8 in · 1,900 mm	64.4 in · 1,635 mm	+16% U-650/651 M
Ground clearance declared	18.9 in · 480 mm	13.0 in · 330 mm	+45% U-650/651 M
Turning radius, braked declared	11.9 ft · 3.64 m	11.7 ft · 3.56 m	—
Fuel tank declared	103.6 qt · 98.0 L	83.5 qt · 79.0 L	+24% U-650/651 M

Source

Source