I speculate a 1,300 pound weight on your Three Point Hitch will handicap fuel consumption by ~~5% on level ground, additional handicap on hills. Your 1.5L engine produces peak horsepower at 2,600 RPM, fairly high revs for a diesel tractor engine.
You will have to be cautious moving up slopes or loading tractor into a trailer using ramps with 1,300 pounds on the rear without weight in the bucket, lest front end lift from the ground.
Massey Ferguson 1035
1986 - 1991
Compact Utility tractor
Distributor: Massey Ferguson
Manufacturer: Toyosha
Original price (USD): $12,400 (1991)
Massey Ferguson 1035 Engine:
Toyosha 1.5L 3-cyl diesel
Engine Detail:
Toyosha
diesel
3-cylinder
liquid-cooled
91.8 ci [1.5 L]
Power: 31 hp [23.1 kW]
Rated RPM: 2600
Capacity:
Fuel: 7.1 gal [26.9 L]
Massey Ferguson 1035 Tires:
Standard tires (ag): Front: 5.00-15. Rear: 13.6-24 (2WD)
Front: 7.00-16. Rear: 13.6-24 (4WD)
Lawn/turf front: 27x8.50-15
Lawn/turf rear: 43x13.5-22
Dimensions:
Weight: 2711 lbs [1229 kg] (2WD)
2935 lbs [1331 kg] (4WD)
Wheelbase: 67.3 inches [170 cm]
Length: 116.9 inches [296 cm]
Width: 59.3 inches [150 cm]