Massey Ferguson 491 Tractor Parts

491 parts and accessories

The Massey Ferguson 491 tractor, produced in the mid-1980s, was a popular choice for farmers needing a reliable utility tractor. Powered by a Perkins diesel engine producing around 77 horsepower, the MF 491 offered ample power for various agricultural tasks. With a PTO horsepower of approximately 68, it efficiently handled implements for haying, tillage, and other farm operations.

The Massey Ferguson 491 was introduced as part of the 400 series, building upon Massey Ferguson's reputation for dependable and versatile tractors. Production spanned from approximately 1984 to the early 1990s. The heart of the MF 491 is a Perkins AD4.236 four-cylinder diesel engine, delivering around 77 horsepower with a displacement of 236 cubic inches. This engine was known for its durability and fuel efficiency. The transmission is typically an 8-speed forward, 2-speed reverse mechanical gear transmission, offering a good range of speeds for different field conditions. PTO horsepower is rated around 68 at 540 RPM. The hydraulic system capacity is around 10 gallons, with typically two remote valves available. The 3-point hitch is a Category II, providing a lift capacity of approximately 3,500 lbs. Common applications for the MF 491 include hay baling, plowing, discing, planting, and general utility work around livestock farms. This model distinguished itself by its robust construction, simple design, and ease of maintenance, making it a practical and affordable option for small to medium-sized farms.

Specifications

Engine	Perkins AD4.236 77 HP Diesel
PTO HP	68 HP @ 540 RPM
Transmission	Gear 8F/2R
Hydraulics	10 GPM, 2 remotes
3-Point Hitch	Category II, 3500 lbs lift capacity
Fuel Capacity	24 gallons
Weight	6,500 lbs
Years Produced	1984-1990s

Maintenance Tips

Change engine oil and filter every 250 hours of operation. Use a high-quality diesel engine oil meeting API CH-4 or higher specifications.
Inspect and maintain the hydraulic system regularly. Check for leaks, replace hydraulic filters per manufacturer recommendations, and ensure proper fluid levels to prevent pump damage.
Periodically inspect and clean the fuel system, including the fuel filter and fuel lines. Use clean, high-quality diesel fuel and consider using a fuel additive to prevent gelling in cold weather.
Before seasonal storage, drain fluids susceptible to freezing (if applicable for your climate), grease all fittings, and store the tractor in a dry, sheltered location to prevent rust and corrosion.

History & Background

The Massey Ferguson 491 was launched in the mid-1980s as a workhorse in the MF utility tractor lineup. It offered a balance of power, reliability, and affordability that appealed to a wide range of farmers. The 491 played a significant role in modernizing farming practices by providing a versatile and efficient machine for various agricultural tasks.

Frequently Asked Questions

What engine is in the Massey Ferguson 491?

The Massey Ferguson 491 is equipped with a Perkins AD4.236 four-cylinder diesel engine, producing approximately 77 horsepower with a 236 cubic inch displacement.

What is the PTO horsepower on a 491?

The PTO horsepower rating for the Massey Ferguson 491 is approximately 68 HP at 540 RPM.

What oil filter fits the 491?

Common oil filter cross-references for the Massey Ferguson 491 include Wix 51794, Fram PH2951, and Baldwin B2. Always verify the specific filter requirements with your parts supplier.

What are common parts needed for the 491?

Common wear parts for the Massey Ferguson 491 include engine oil filters, fuel filters, hydraulic filters, fan belts, hydraulic cylinder seals, steering linkage components, clutch discs, and throwout bearings.

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