Ford 641 Tests

Ford 641 tractor photo
1957 - 1962
601 Workmaster Series
Utility tractor
Series map:
Tractor Tests
NTTL 642: gasoline 12-speed 2WD
NTTL 686: diesel 12-speed 2WD
Nebraska Tractor Test 642
641 fuel use from test 642
Nebraska Tractor Test 642
Gasoline 12-speed 2WD
March 20 - 31, 1958
Link: Nebraska Tractor Test 642 file
Belt power (max)33.65 hp
25.1 kW
Belt fuel use (max)3.4 gal/hour
12.9 l/hour
Drawbar performance
Max power29.82 hp
22.2 kW
Gear 5 used for power test.
Max pull4,101 lbs
1860 kg
Gear 1 used for pull test.
Nebraska Tractor Test 686
641 fuel use from test 686
Nebraska Tractor Test 686
Diesel 12-speed 2WD
March 11 - 18, 1959
Link: Nebraska Tractor Test 686 file
PTO performance
Power at rated engine speed31.78 hp
23.7 kW
Fuel use2.2 gal/hour
8.3 l/hour
Power at rated PTO speed25.29 hp
18.9 kW
Fuel use1.8 gal/hour
6.8 l/hour
Drawbar performance
Max power29.33 hp
21.9 kW
Fuel use2.3 gal/hour
8.7 l/hour
Gear 5 used for power test.
Max pull4,230 lbs
1918 kg
Gear 1 used for pull test.
Page information
Peter Easterlund - owner of
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Peter Easterlund - owner/author
Updated on February 20, 2024
©2000-2024 -®. Notice: Every attempt is made to ensure the data listed is accurate. However, differences between sources, incomplete listings, errors, and data entry mistakes do occur. Consult official literature from the manufacturer before attempting any service or repair.