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Kubota B1750 Troubleshooting

Kubota B1750 Engine Troubleshooting

Engine starts up hard or will not start: Fuel filter plugged. Clean the filter element. There is air in the fuel system. Bleed the system. Defective or clogged injection nozzle. Test injection nozzles and change if necessary. Fuel injection pump malfunctioning. Replacement or repair required.

Engine shuts off suddenly during operation: Improper fuel injection timing. Adjust fuel injection pump as required. Fuel filter element clogging. Clean the filter element. Low coolant temperature. Warm up to required temperature.

Engine starts but then stops: Dirty fuel filter. Clean or replace the filter. Fuel injection pump malfunctioning. Install a new fuel pump or repair. Air filter element clogged. Replace air filter element.

Engine is overheated: Radiator core is clogged or radiator cap is leaking. Replace cap or clean radiator. Coolant level is low. Fill the cooling system and check components for leaks or other faults. Excessive wear of the fan belt. Belt change is required. Engine oil level is insufficient. Fill up the oil to required level.

Engine loses power: Clogged injection nozzle. Inspect nozzles and replace if necessary. Dirt in the fuel lines or hoses. Clean fuel system lines and hoses. Plugged air cleaner. Clean or replace element. Blown cylinder head gasket. Gasket should be replaced.

Engine knocking sound or abnormal noise: Engine is not fully warmed up. Engine is not warmed up to the required temperature. Not enough engine oil. Check and refill engine oil. Incorrect adjustment of fuel injection pump timing. Check the fuel injection pump timing adjustment. Pistons are worn or scored. Replace the pistons as required. Connecting rod is not aligned or defective. Alignment procedure or replacement is required.

Engine stalling at idle: Wrong adjustment of low idle speed. Adjust low idling as recommended. Incorrect valve clearance. Correct valve clearance. Faulty fuel injection pump. Repair or install a new fuel pump.

Oil pressure is low: Engine oil insufficient. Fill up the engine oil. Oil pump is damaged. Inspect and change as required. Oil filter is dirty. Change or service engine oil filter.

Kubota B1750 Transmission Troubleshooting

Excessive transmission noise: Defective gears or improper backlash. Install new gears and adjust backlash properly. Shift forks are bent or worn out. Shift forks need to be changed. Shaft splines are damaged or worn. Install a new shaft. Insufficient transmission fluid. Check and refill the transmission fluid. Worn or broken bearings. Bearings replacement required. Transmission oil is dirty. Transmission oil change required.

Gear shift is hard: Corroded or worn gear shift linkage. Change or lubricate shift linkage. Malfunction or incorrect clutch adjustment. Adjust or install new clutch. Damaged or worn gear shift forks. Change defective shift forks. Worn parts of the gear shifting mechanism. Change worn parts.

Insufficient transmission oil pressure: Low oil level. Fill up the transmission oil. Clogged transmission oil filter element (if fitted). Clean or replace the transmission filter. Relief valve failure. Install a new valve.

External fluid leaks: Seals or gaskets are broken. Gaskets or seal replacement required. Too much fluid in transmission. Excess fluid must be drained.

Hydrostatic Transmission Troubleshooting

Hydrostatic transmission noises: Worn or out of adjustment speed control linkage. Replace or adjust linkage. Excessive transmission load. Reduce loading. Low transmission oil level or contaminated oil. Change transmission oil or top up to proper level. Relief valve failure. Replace valve as required. Defective or worn transmission parts. Change or repair defective parts.

Transmission fluid over heats: Excessive transmission load. Reduce the load is required. Clogged or damaged cooling components. Inspect all cooling components and replace or repair if necessary. Transmission fluid insufficient. Add fluid to the transmission housing. Dirty transmission fluid filter element. Replace or service transmission fluid filter.

Power is too low: Lack of transmission fluid. Fill the transmission housing to proper fluid level. Defective relief valve. Change the valve. Speed control linkage is worn or unadjusted. Repair or adjust linkage.

Transmission fluid leaks: Oil drain pipe is plugged. Check pipe and service if necessary. Worn seals or gaskets. Gaskets or seal replacement required. High internal transmission case pressure. Check transmission parts for damage or wear and replace if required.

Kubota B1750 Hydraulic System Troubleshooting

Excessive hydraulic system heat: Improper type of hydraulic oil. Use the proper type of oil. Contaminated hydraulic fluid. Change hydraulic fluid. Air in hydraulic pipes. Bleed hydraulic pipes. Main relief valve failure. Relief valve replacement required.

Insufficient hydraulic oil pressure: Hydraulic fluid is insufficient. Checking hydraulic fluid level and add if necessary. Clogged hydraulic oil filter. Change the hydraulic filter element or service if required. Leaks in hydraulic lines. Check the system and repair leaks. Not adjusted hydraulic control valve. Need to adjust. Hydraulic pump not working. Install a new hydraulic fluid pump. Damaged hydraulic cylinder. Repair or change hydraulic cylinder.

Hitch not lifting or hitch lifts slowly: Hydraulic pump failure. Repair or replace hydraulic fluid pump. Defective main relief valve. Relief valve need to be replaced. Faulty hydraulic control valve. Install a new hydraulic valve or repair it. Hydraulic cylinder not working. Repair or change hydraulic cylinder. Low hydraulic fluid level. Fill up the hydraulic fluid. Clogged hydraulic fluid filter. Change the hydraulic filter element or service if required. Excessive load on hitch. The load should be reduced.

Three-point hitch cannot be dropped or dropping is too slow: Hydraulic cylinder failure. Replace or repair hydraulic cylinder. Incorrect adjusted hydraulic spool valve. Adjust the spool valve correctly. Hitch rock shaft is damaged. Install a new shaft. Unadjusted hitch. The three-point hitch must be adjusted.

Hitch jerks when drop or lift: Hydraulic fluid is dirty. Hydraulic fluid change required. Hydraulic pump malfunction. Repair or replace hydraulic oil pump. There is air in the hydraulic system. Bleed hydraulic system. Hydraulic control valve is faulty. Repair or change the valve. Damaged hydraulic cylinder. Repair or replace hydraulic cylinder.

Kubota B1750 Steering System Troubleshooting

Excessive free play of steering wheel: Worn steering column shaft or coupling. Replace defective component. Steering pump is faulty. Check the steering pump and replace if necessary. Steering linkage parts are loose or worn. Inspect and replace as required. Steering control valve has wear or damage. Inspect and change as required. Steering gear box parts are worn. Repair power steering gearbox.

Steering is stiff: Air in steering system. Bleed air. Steering filter is clogged. Clean or change steering filter. Lack of steering oil. Fill the steering system with oil. Steering control valve has damage or wear. Inspect and change as required. Steering box components are worn out. Defective power steering box components must be replaced. Damaged hydraulic steering pump. Steering pump needs to be replaced or repaired. Stuck or faulty steering pump control valve. Change or flush control valve. Incorrectly mounted or defective steering column. Mount the steering column correctly or replace it. Front tyres are worn unevenly. Install new tyres. Not adjusted toe-in. Check toe-in and correct.

Tractor pulls to right or left: Steering box parts have excessive wear. Repair power steering box. Worn or damaged steering control valve. Replace or repair steering control valve as required. Improper toe-in. Check toe-in and correct. Worn or loose steering linkage assembly. Repair or replace steering linkage. Incorrectly adjusted or worn front wheel bearings. Adjust properly or replace bearings. Front tires are worn unevenly. Install new tires.

Kubota B1750 Electrical Troubleshooting

Battery is not charging: Electrical wire connections are corroded or loose. Tighten or clean connections. Faulty electrical terminal connectors. Change terminal connectors. Battery is defective. Use a new battery. Loose or damaged belt. Adjust belt tension or replace belt.

Starter turns slowly: Low battery output. Battery needs to be recharged. Battery is draining quickly. Battery needs service or replacement. Disconnected wiring or bad battery terminals. Connect wiring correctly or install new terminals.

Starter is not cranking: Battery is drained or worn. Charge or change the battery. Wiring is improperly connected or disconnected. Check wiring and connect properly. Battery power is low. Battery needs to be recharged. Faulty starter motor. Replace or repair starter.