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Kubota B6200 Troubleshooting

The Kubota B6200 compact utility tractor was manufactured from 1983 to 1992. This model was designed in four versions: B6200E (2WD Gear), B6200D (4WD Gear), B6200HST-E (2WD Hydro), and B6200HST-D (4WD Hydro). The Kubota B6200 is powered by Kubota D850 4-cycle vertical 3-cylinder liquid-cooled diesel engine with a rated power of 15 hp (11.2 kW).

The Kubota B6200 is fitted with 2 transmission options: 6x2 mechanical transmission with a manual gear shifting, and hydrostatic transmission with a high-low shift levels. The maximum travel speed (forward/reverse): 8 mph (12.8 km/h) and 5.7 mph (9.2 km/h). The open center hydraulic system used a gear pump with rated fluid flow of 4.0 (15.1) gpm. The hydraulic system pressure is 113 bar (1640 psi). The 2WD models are equipped with 4.50x10 (AG) front tyres and 7.00x16 (AG) rear tyres.

The 6.00x12 (AG) or 20.5x8.00-10 (Turf) front tyres and 8.00x16 (AG) or 29x12.00-15 (Turf) rear tyres fit 4WD tractors. The wheel base is 57.9" (1470 mm). The tractor is compatible with a 60" mid-mount 3-blade Kubota RC60-72 mower deck with cutting height of 1.5-4.0 in (38-102 mm), 48" rear-mount Kubota B3538 finish mower, 51" front-mount dual-stage Kubota B2551 snowblower with hydraulic lift, and Kubota B1640 front-end loader with lift capacity to full height of 510 lbs (231 kg).

Engine Troubleshooting
Engine hard starting or not starting
Clogged fuel filter element - Service the filter
The fuel shut-off valve is closed - Open fuel shut-off valve
Air in fuel lines - Bleed fuel lines
Faulty or dirty injectors - Service or change fuel injectors
Fuel injection pump malfunction - Repair or install a new fuel pump
Poor cylinder compression - Inspect cylinder block and replace worn components
Engine stops running unexpectedly
Engine is not fully warmed up - Engine is not warmed up to the required temperature
Air trapped in fuel system - Bleed air
Fuel injection failed - Use correct settings
Fuel filter plugging - Service the filter
Dirty or damaged injectors - Inspect fuel injectors and replace if necessary
Engine starts but immediately stops
Incorrect setting of fuel injection pump timing - Fuel injection pump timing adjustment needs to be corrected
Fuel filter clogging - Clean the filter element
Fuel injector nozzles are damaged - Service or replace nozzles if required
Fuel injection pump damage - Rebuild or replace pump
Dirty air cleaner - Replace or service air cleaner element
Engine stalls when idling
Wrong adjustment of low idle speed - Correct low idle adjustment
Faulty fuel injection pump - Replace or repair injection pump
Fuel injector nozzles are damaged or dirty - Replace fuel injector nozzles
Valve out of adjustment - Correct valve clearance needs to be set
Engine overheated
Lack of engine coolant - Fill the cooling system. Check and repair damage to the cooling system if required
Cooling system components are worn or system is clogged - Change faulty components or flush cooling system
Engine oil insufficient - Need to add engine oil
Improper fan belt tension or damaged belt - Adjust correctly or replace the belt
Thermostat malfunction - Thermostat needs to be replaced
Engine power is insufficient
Fuel injectors are clogged or faulty - Test fuel injectors and change if necessary
Fuel injection pressure is incorrect - Adjust to correct pressure
Air filter is clogged - Replace filter or install new filter element
Clogged oil filter element - Change or service engine oil filter
Engine is under excessive load - Reduce the load or use a lower gear
Valve clearance is out of adjustment - Need to adjust valve clearance
Low idle speed setting is not correct - Test and adjust
Dirt in the hoses or pipes - Clean fuel hoses and pipes
Engine compression is insufficient: Leaking or faulty valves - Have valves replaced
Abnormal engine knocking or noise
Fuel injection pump timing is incorrect - Correct injection timing
Fuel injector nozzles are faulty - Service or replace injector nozzles
Engine oil insufficient - Checking oil level and add if necessary
Engine is not fully warmed up - Warm up to required temperature
Crankshaft or main bearings failure - Repair or replace defective parts
Piston rings are damaged or broken - Piston rings replacement required
Loose flywheel screws - Inspect the flywheel screws and tighten securely
High oil consumption
Oil leaks: Worn seals or gaskets - Defective components must be replaced
Wrong oil viscosity - Use oil of proper viscosity
Piston rings are defective or worn - Have piston rings replaced
Valve stems or guides are damaged - Install new valves
Cylinder liners or pistons are scored - Check pistons and liners, change as required

Electrical System Troubleshooting
Battery is not charging
Battery failing - Battery change required
Damaged battery cable harness - Check electrical cables for damage, repair or replace
Corroded or loose battery terminals and cables - Service or tighten battery cables and terminals
Belt is defective or belt tension is improperly adjusted Replace belt or correctly adjust belt tension
Starter cranks slow
Battery power is low - Battery is drained, charge it
Battery runs out quickly - Battery needs to be serviced or replaced
Battery electrical wire harness failure - Inspect wires for defects, change or repair
Corroded or loose cables and terminals - Tighten or clean cables and terminals
Starter will not crank
Battery capacity is low - Battery is drained, charge it
Drained or faulty battery - Change or recharge battery
Starter motor failure - Starter needs to be replaced
Improperly connected or disconnected wiring harness - Inspect wiring harness and connect properly

Transmission Troubleshooting
Hard shifting
Worn or misadjusted clutch - Clutch adjustment or replacement required
Gear shift linkage is stuck or damaged - Change or repair shift linkage
Bent or worn shift forks - Shift forks need to be changed
Gear shifting mechanism is worn - Change worn components
Insufficient transmission oil pressure
Low transmission oil level - Checking transmission oil level and add if necessary
Transmission fluid filter clogging (if fitted) - Change or service the transmission fluid filter
Relief valve failure - Install a new relief valve
Transmission makes noise
Bearings are worn or cracked - Replace faulty bearings
Low transmission oil level - Add transmission oil as required
Transmission fluid contamination - Change transmission fluid
Improper backlash or damaged gears - Replace gears or set backlash correctly
Bent or worn shift forks - Change the shift forks
Transmission fluid leaks
Gaskets or seals are broken - Install new components
Transmission housing is cracked - Replace housing or transmission assembly

Hydrostatic Transmission Troubleshooting
Hydrostatic transmission noise
Contaminated oil or low oil level - Pour fresh oil or add oil to proper level
Speed control rod linkage is worn or not adjusted - Replace rod linkage or adjust correctly
Relief valve failure - Replace the valve
Transmission is under excessive load - Load needs to be reduced
Worn or damaged transmission components - Replace or repair worn components
Transmission oil overheats
Insufficient fluid supply - Fill up the transmission fluid
Transmission oil filter clogging - Change or clean the transmission oil filter
Plugged or defective cooling components - Check all cooling components and change or repair if required
Transmission is under excessive load - Reduce the load is required
Loss of power
Oil level is insufficient - Fill up the transmission oil
Insufficient charge pressure - Check charge pressure
Relief valve is defective or worn - Replace relief valve
External oil leaks
Gaskets or seals are broken - Change defective seal or gaskets
Internal transmission case pressure is too high - Inspect transmission parts for malfunction and change if required
Oil return pipe is clogged - Check pipe and clean if necessary

Hydraulics Troubleshooting
Excessive hydraulic system heat
Improper hydraulic pressure adjustments - Adjust it correctly
Main relief valve failure or incorrect setting - Adjust or change relief valve
Contaminated hydraulic fluid - Change hydraulic fluid
Air leaks in hydraulic system - Check the suction pipe, fittings, and pump seals
Hydraulic oil pressure too low
Not enough hydraulic oil in the system - Add oil to the hydraulic system
Hydraulic oil filter element clogging - Replace hydraulic filter element or service if necessary
Hydraulic pump is defective - Check pump flow and install new pump if necessary
Defective or not adjusted hydraulic spool valve - Adjust correctly or change
Hydraulic cylinder is broken - Check cylinder components for damage or wear and change if necessary
Hydraulic piping leaks - Find leaks in hydraulic system and repair it
Hitch cannot be raised or raising is too slowly
Hydraulic oil level is low - Fill up the hydraulic oil
Hydraulic fluid is too cold - Allow fluid to warm
Dirty hydraulic oil filter - Clean the hydraulic filter or install new filter element
Damaged hydraulic oil pump - Test the pump flow rate and change pump if required
Unadjusted or defective main relief valve - Adjust or change relief valve
Defective or incorrect setting hydraulic spool valve block - Set correctly or replace
Hydraulic cylinder is not working - Check cylinder components for damage or wear and change if necessary
Suction line is damaged or disconnected - Connect or replace
3-point hitch won't drop or drops slowly
Defective or not adjusted hydraulic control valve - Change or set correctly
Hydraulic cylinder is broken - Check cylinder parts for wear or damage and replace if necessary
Worn lift arm shaft - Install a new shaft
Mechanical parts of the hitch are damaged - Replace defective or worn hitch parts
Hitch jerks when lift or lower
Hydraulic system sucks air - Inspect the pump seals, suction pipe, and fittings
Hydraulic oil is dirty - Hydraulic oil change required
Damaged hydraulic oil pump - Check hydraulic pump flow and replace pump if necessary
Damaged or incorrect adjusted hydraulic control valve - Set correctly or replace
Hydraulic cylinder malfunction - Check cylinder components for wear or damage and change if necessary

Steering System Troubleshooting
Hard Steering
Steering knuckle or steering column is stuck - Inspect steering column and knuckle, replace worn parts
Steering gearbox components are worn - Replace defective components of steering gearbox
Faulty drag link or tie rod - Replace or repair
Insufficient lubrication in steering box - Need to lubricate the gearbox
Not adjusted toe-in alignment - Check and adjust toe-in
Tires are not correctly inflated - Inflate tires as necessary
Excessive steering wheel free play
Steering column bearing or shaft is worn - Change faulty parts
Steering linkage assembly is worn or loose - Repair or replace steering linkage
Worn steering gearbox bearings - Replace the bearings
Front wheel hub bearings or steering knuckles are worn - Change hub bearings or knuckles
Damaged or worn steering tie-rod ends - Change faulty part
Tractor pulls to right or left
Worn or loose steering linkage assembly - Repair or replace steering linkage
Defective steering knuckle bushing - Replace knuckle bushing
Uneven tire pressure - Inflate the tires properly
Toe-in adjustment is incorrect - Adjust toe-in correctly



Farm Tractors Technical Specifications
JD 1026R JD 3650 JD 6400 JD 7810
FORD 1320 FORD 2810 FORD 3930 FORD 5600
MF 250 MF 690 MF 3060 MF 6180
NH TC48DA NH M100 NH T7550 NH 8560
CASE IH 495 CASE IH 1255XL CASE IH 2140 CASE IH 2294