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Kubota B7400 Maintenance

The Kubota B7400 is a 4-wheel drive compact utility tractor. This model was manufactured between 2000 and 2003. The Kubota B7400 tractor is powered by 43.9 cubic inches (0.7 L) Kubota D722-E 3-cylinder indirect injection naturally aspirated liquid cooled diesel engine with a maximum power of 16 Hp (11.9 kW) and 44.7 Nm (33 lb-ft) of peak torque at 2600 rpm.

The Kubota B7400 is fitted with 2 transmission options: gear shift transmission with 6 forward and 2 reverse gears, or 2-range hydrostatic transmission with infinite forward and reverse gears.

Max. travel speed (forward and reverse): 11.7 mph (18.8 km/h) / 7.3 mph (11.7 km/h). The open center hydraulic system used a single gear pump with a flow rate of 3.9 gpm (14.8 lpm). The tractor was equipped with a manual steering system, multi-plate wet disc brakes, 6.00x12 front tires, and 8.3x16 rear tires. The wheel base is 59 in (1490 mm).

Compatible attachments for the Kubota B7400 tractor: 54", 60" mid-mount 3-blade side discharge rotary mower decks with cutting height of 1.5-4.0 in (30-100 mm), and Kubota LA272 loader with lift capacity to max height of 685 lbs (310 kg).

Refill Capacities
Engine oil capacity, gal (L) 0.65 (2.4)
Engine coolant capacity, gal (L) 0.75 (2.9)
Hydraulic/transmission fluid capacity (Gear), gal (L) 3.0 (11.2)
Hydraulic/transmission fluid capacity (HST), gal (L) 3.2 (12.0)
Front axle oil capacity, qts (L) 3.4 (3.2)

Recommended Oil and Fluid
Engine oil type SAE 20, SAE 30, SAE 10W, 10W-30. API Service category CD, CF
Engine coolant type Kubota Antifreeze/Coolant
Hydraulic/transmission fluid type Kubota UDT or Super UDT
Front axle oil type Gear lube SAE 80, SAE 80W-90

Service Intervals
Check hydraulic/transmission fluid level Every 50 hours
Check front axle oil level Every 50 hours
Lubricate axle hub bearings Every 50 hours
Change engine oil Every 100 hours
Clean primary engine air filter element Every 100 hours
Clean secondary engine air filter element Every 100 hours
Service engine fuel filter element Every 100 hours
Check battery and clean terminals Every 100 hours
Inspect and adjust alternator/fan belt Every 100 hours
Replace engine oil filter Every 200 hours
Replace hydrostatic transmission filter (HST) Every 200 hours
Replace hydraulic/transmission oil filter Every 300 hours
Change hydraulic/transmission fluid Every 300 hours
Change front axle oil Every 300 hours
Check and adjust engine idling Every 300 hours
Adjust parking and service brakes Every 300 hours
Change engine fuel filter Every 400 hours
Clean radiator fins Every 500 hours
Replace primary engine air filter element Every 600 hours
Replace secondary engine air filter element Every 600 hours
Check and adjust valve clearance Every 800 hours
Flush cooling system and add new coolant Every 1000 hours

Replacement Parts
Engine oil filter part number HH150-32430
Engine fuel filter part number 6A320-59930 (Element)
Engine fuel filter gasket part number 6A320-59940
Primary engine air filter part number 6C060-99414
Secondary engine air filter part number 32721-58242 (Element)
Hydraulic oil filter part number HH670-37712
Hydraulic suction filter part number 66021-36390
Hydraulic filter gasket part number 04811-10300
Hydrostatic transmission filter part number HH660-36060
Drive belt part number 1G027-97012



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MF 250 MF 690 MF 3060 MF 6180
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CASE IH 495 CASE IH 1255XL CASE IH 2140 CASE IH 2294