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Kubota M6800 Maintenance

The Kubota M6800 is a 2-wheel drive or 4-wheel drive utility tractor from M-Series. This model was manufactured between 1997 and 2005. The Kubota M6800 driveline includes a V3300 four-cylinder water-cooled diesel engine and 8x8 synchronized shuttle transmission, or power shuttle transmission with 8 forward and 8 reverse gears.

A 3.3L (202 cu.in) engine power is 70.9 hp (52.9 kW) at 2600 rev/min. The maximum forward/reverse speed - 20.7 mph (33.3 km/h). The open center hydraulic system includes a gear pump with a rated fluid flow of 11 gpm (41.6 lpm).

The main relief pressure is 195 bar (2830 psi). The standard lift capacity is 4200 lbs (1905 kg). The 2WD models are equipped with 7.50x16 front tyres and 16.9-30 rear tyres. The 9.50x24 front tyres and 16.9-30 rear tyres fit 4WD tractors. The wheelbase is 80.7 in (2040 mm) for models without cab and 83.7 in (2120 mm) for models with cab. The Kubota M6800 is compatible with LA1002 front end loader with a maximum lift height of 115.6 in (2930 mm), and LA1162 front end loader with a maximum lift height of 114 in (2890 mm).

Refill Capacities
Engine oil capacity, gal (L) 2.8 (10.7)
Engine coolant capacity, gal (L) 2.25 (8.5)
Hydraulic/transmission fluid capacity, gal (L) 10.6 (40.0)
Front axle oil capacity, gal (L) 2.25 (8.5)

Recommended Oil and Fluid
Engine oil type SAE 20, SAE 30, SAE 10W-30, 10W-40. API Service category CC, CD
Engine coolant type Kubota Antifreeze/Coolant
Hydraulic/transmission fluid type Kubota UDT or Kubota Super UDT Fluid
Front axle oil type Kubota UDT, SAE 80, SAE 80W-90 Gear Oil

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
Check battery and clean terminals Every 100 hours
Clean primary engine air filter element Every 100 hours
Inspect and adjust fan belt Every 100 hours
Adjust parking and service brakes Every 100 hours
Change engine oil Every 200 hours
Clean cab air filters Every 200 hours
Check power steering oil line Every 200 hours
Check and adjust engine idling Every 200 hours
Replace hydraulic/transmission oil filter Every 300 hours
Replace engine oil filter Every 400 hours
Replace engine fuel filter Every 400 hours
Clean water separator Every 400 hours
Change hydraulic/transmission fluid Every 600 hours
Change front axle oil Every 600 hours
Check and adjust valve clearance Every 800 hours
Replace primary engine air filter element Every 1000 hours
Replace secondary engine air filter Every 1000 hours
Replace cab air filters Every 1000 hours
Check fuel injection nozzles Every 1500 hours
Flush cooling system and add new coolant Every 2000 hours

Replacement Parts
Engine oil filter part number HH1C0-32430, 1C020-32430
Engine fuel filter part number HH166-43560, 16631-43560 (Element)
Engine fuel filter gasket part number 1C011-43330
Primary engine air filter part number 59800-26110
Secondary engine air filter part number 3A111-19130 (Element)
Cab air filter part number T0270-72070, TA043-71600
Hydraulic oil filter part number 33960-38380 or HH330-82630
Drive belt part number 1C010-97010



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MF 250 MF 690 MF 3060 MF 6180
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