Massey Ferguson 491

The Massey Ferguson 491 is a tractor produced by Massey Ferguson. It is equipped with a 268.6 ci 4.4 L engine. The listed engine power is Diesel (gross): 89 hp / 66.4 kW. Transmission: 12 forward and 4 reverse. Operating weight: 6812 to 8025 pounds.

Engine Power

Diesel (gross): 89 hp / 66.4 kW

Fuel & Capacities

29 gal 109.8 L

Transmission

12 forward and 4 reverse

Operating Weight

6812 to 8025 pounds

Overview

	2004 - 2006 400 SeriesUtility tractor 400 Series Utility tractor

Production
Manufacturer	Massey Ferguson (a part of AGCO)
Utility tractor
Built in Brazil

Massey Ferguson 491 Engine
Perkins 4.4L 4-cyl diesel
Fuel tank	29 gal 109.8 L
Engine details ...

Massey Ferguson 491 Transmission
12-speed partially synchronized
Transmission details ...

Massey Ferguson 491 Power
Engine (gross)	89 hp 66.4 kW
PTO (claimed)	77 hp 57.4 kW
PTO (tested)	85.87 hp 64.0 kW
Performance test details ...

Mechanical
Two- or four-wheel drive
Final drives	planetary
Power steering
Independent hydraulic wet disc brakes
Flat-deck platform with two-post folding ROPS. Optional cab with air-conditioning.

Hydraulics
Type	open center
Valves	2 or 3
Pump flow	7.0 gpm (3-point) 26.5 lpm
	10 gpm (aux) 37.9 lpm
SCV flow	17 gpm 64.3 lpm
Total flow	25 gpm 94.6 lpm
Steering flow	8.0 gpm 30.3 lpm

Tractor hitch
Rear Type	II
Control	position control and top-link draft sensing
Rear lift (at 24"/610mm)	4199 lbs 1904 kg

Power Take-off (PTO)
Rear PTO	independent
Clutch	hydraulic wet disc
Rear PTO Type	540/1000 (1.375)
Engine RPM	540@1900
	1000@1900

Dimensions & Tires
Wheelbase	93 inches 236 cm
Weight	6812 to 8025 pounds
Front tire	12.4-24
Rear tire	18.4-30
Full dimensions and tires ...

Electrical
Ground	negative
Battery volts	12

References

400 Series Tractors published in 2005, by Massey Ferguson

Engine

Engine Detail — 268.6 ci / 4.4 L Diesel

Manufacturer	Perkins 1104C-44T
Configuration	turbocharged diesel, 4-cylinder, liquid-cooled vertical
Displacement	268.6 ci 4.4 L
Bore/Stroke	4.134x5.00 inches 105 x 127 mm
Emissions	Tier II
Power (gross)	89 hp 66.4 kW
Air cleaner	dual paper elements
Compression	18.2:1
Rated RPM	2200
Torque	282 lb-ft 382.4 Nm
Torque RPM	1200
Starter volts	12

Transmission

Transmission — 12 forward and 4 reverse partially synchronized

Type	partially synchronized
Gears	12 forward and 4 reverse
Clutch	330mm dry disc
Three gears (1-3) plus reverse (R) with low/high ranges and an additional synchronized slow/fast range lever. Synchronized shifting between gears 2-3 and the slow/fast range.

Dimensions

Massey Ferguson 491 Tires
Ag front	12.4-24
Ag rear	18.4-30

Dimensions
Wheelbase	93 inches 236 cm
Length	155 inches 393 cm
Width	80 inches 203 cm
Clearance (drawbar)	14.7 inches 37 cm

Massey Ferguson 491 Weight
2WD ROPS Shipping	6812 lbs 3089 kg
4WD ROPS Shipping	7275 lbs 3299 kg
2WD Cab Shipping	7562 lbs 3430 kg
4WD Cab Shipping	8025 lbs 3640 kg
4WD ROPS Operating	7435 lbs 3372 kg

Massey Ferguson 491 Height
ROPS	102.5 inches 260 cm
Height (Folded ROPS)	79.4 inches 201 cm
Cab	106 inches 269 cm
Exhaust	108 inches 274 cm

Tests

Nebraska Tractor Test 1851
Diesel 12-speed 4WD May 25 - 26, 2005 Link: Nebraska Tractor Test 1851 file
PTO performance
Max power	85.87 hp 64.0 kW
Fuel use	5.2 gal/hour 19.7 l/hour
Power at rated engine speed	78.81 hp 58.8 kW
Fuel use	5.0 gal/hour 18.9 l/hour
Power at rated PTO speed	84.16 hp 62.8 kW
Fuel use	4.9 gal/hour 18.5 l/hour

Attachments

Attachment overview
Massey Ferguson 1065 loader
Massey Ferguson 1070 loader

Photos

Massey Ferguson 491 tractor photo

Recommended Implements & Sizing Guide

Engineering recommendations for Massey Ferguson 491 based on its 89 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	3 to 4 Bottom (16")3 - 4 铧 (40 cm)	Heavy Duty	Suitable for medium loam and stubble turnover.
Rotary Cutter / MowerMowing & Clearing	7 to 8 ft (84-96 in)2.1 - 2.4 m	Heavy Duty	Heavy-duty twin spindle cutter for overgrown acreage.
Rotary TillerSeedbed Prep	78 to 84 in200 - 215 cm	Heavy Duty	Heavy commercial tiller with multi-speed gearbox.
Disc HarrowSecondary Tillage	10 to 14 ft Tandem / Offset3.0 - 4.2 m 重型交错耙	Heavy Duty	Aggressive residue cutting in corn/cotton stubble.
Hay BalerHay & Forage	4x4 to 4x5 Round Baler1.2x1.5 m 紧凑圆捆机	Heavy Duty	Silage and dry hay; 540 RPM PTO with slip-clutch.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Massey Ferguson 491.

Estimated Continuous Field Runtime: 6.3 hrs

Approximately 6.3 hours of continuous field operation at ~75% rated power on a full tank (29 gal / 109.8 L).

Estimated 75% Load Fuel Burn~4.6 gal/hr (17.5 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours