Home » Massey Ferguson MF 285 Tractor Specifications

Massey Ferguson MF 285 Tractor Specifications

Specs Hub › Massey Ferguson › MF 285

Complete specifications for the Massey Ferguson MF 285 tractor, transcribed from the specifications section of the factory operator's manual (Form No. 1448 316 M2, dated 7/75). The MF 285 was a diesel-only tractor, powered by a Perkins A4.318 four-cylinder direct-injection engine of 318 cu. in. at 17.5:1 compression — the biggest engine in this batch of MF tractors, with no gasoline option documented in this manual.

Drive runs through a single 12 inch dry-disc clutch with heavy-duty organic linings to either an 8-speed transmission or the optional Multi-Power, which extends it to 12 forward and 4 reverse. Steering is hydrostatic power steering, and brakes are independent, mechanically actuated, with 8-3/4 inch double dry discs. PTO output is rated by the manufacturer at 81 hp at 2000 rpm; this manual does not cite a Nebraska Test number for that figure.

Jump to Section:

Engine

Model Perkins A4.318
Type Four cylinder, direct injection
Cylinder Bore 4.5 inches
Piston Stroke 5.0 inches
Total Displacement 318 cu. ins.
Compression Ratio 17.5 to 1
Firing Order 1-3-4-2
Valve Lash, hot Intake and exhaust 0.010 inch
Valve Lash, cold Intake and exhaust 0.012 inch
Low Idle 825-875 rpm
Maximum Speed, no-load 2170-2220 rpm
Governor Part of injection pump, built-in

Fuel System

Type Pressure fed
Filter Two, full flow, replaceable elements
Injectors Multi-hole type

Electrical System

Battery One 12 volt, 170 amp-hr., negative ground
Specific Gravity, fully charged 1.260-1.300
Starter Switch Key operated
Starter 12 volt, 4-pole
Alternator 37 amp continuous output, diode rectified A.C. type with built-in solid state regulator

Brakes and Steering

Brake Type Independent, mechanically actuated wheel brakes, 8-3/4 in. double dry brake discs
Steering Hydrostatic power steering

Hydraulic System

Lift Pump Constant running, scotch yoke, piston type
Maximum Pressure 2900-3100 psi
Lift Pump Delivery 7.0 gpm at 3000 psi
Lift Pump Control Oscillating control valve on inlet side of port
Auxiliary Pump Constant running, dual section, gear type
Auxiliary Pump Delivery, external use 10 gpm at 2300 psi

Power Train

Clutch 12 in. single disc dry clutch with heavy-duty organic linings
Eight Speed Transmission Constant mesh, primary reduction gears with spur type change gears, operated with a planetary reduction gear assembly, giving eight forward and two reverse speeds.
Multi-Power Transmission Constant mesh, spur primary reduction gears with spur speed change gears, operating with a planetary reduction gear assembly and two-stage compounding in combination with a sliding gear and planetary compounding gear, giving twelve forward and four reverse speeds.
Final Drive Spiral bevel gear with straddle-mounted pinion in combination with planetary final reduction on each axle

Capacities

Component U.S. Imperial
Fuel Tank 23 gals. 19.2 gals.
Cooling System 16.5 qts. 13.7 qts.
Crankcase, with filter change 10 qts. 8.3 qts.
Crankcase, without filter change 9 qts. 7.5 qts.
Hydraulic System 8.5 gals. 7.1 gals.
Power Steering Reservoir 1 qt. 0.8 qts.1
Planetary Reduction Units 3 qts. 2.4 qts.1

Dimensions

Wheel Base 88-3/4 inches
Length Over-All 152 inches
Width Over-All 78 inches
Wheel Tread, Front 56 to 88 inches, adjustable
Wheel Tread, Rear Multiple settings, see manual page 37
Turning Radius, without brake Approximately 12 feet
Ground Clearance, minimum under drawbar 16 inches
Shipping Weight 7,000 lbs.

Tires

Front 7.5L-15 F2 tubeless, 6 ply rating; 7.50-16 F2 tubeless, 6 ply rating; 10.00-16 F2 tubeless, 6 ply rating; 9.5L-15 F2 tubeless, 6 ply rating
Rear 13.6-38 R1, 6 ply rating; 13.6-38 R1, 8 ply rating; 15.5-38 R1, 6 ply rating; 16.9-34 R1, 6 ply rating; 16.9-38 R1, 6 ply rating; 18.4-34 R1/R20, 6 ply rating

PTO Power

Rated Output 81 hp at 2000 rpm (manufacturer's rating, not a Nebraska Test figure)

Notes:
1 Reproduced as printed. Both rows convert at a flattened 0.8 ratio rather than the precise 0.8327 Imperial factor: 1 U.S. quart is 0.83 Imperial, and 3 U.S. quarts is 2.5 Imperial, not 2.4. The same rounding shows up on the equivalent rows of other MF tractors in this batch.
All specifications transcribed from the specifications section of the Massey-Ferguson MF 285 operator's manual, Form No. 1448 316 M2, dated 7/75, originally published by Massey-Ferguson. Verify against your tractor's serial number before ordering parts or setting clearances.

Need the complete Massey Ferguson MF 285 operator's manual?

Get the full manual as an instant PDF download, covering controls and instruments, operation, Multi-Power transmission use, the hydraulic system, the lubrication and maintenance schedule, and the specification section reproduced above.

Download the Operators Manual

Other Massey Ferguson tractors covered on this site:

Browse All Massey Ferguson Manuals

All Massey Ferguson specifications

Manual code: 1448 316 M2

Specifications last reviewed