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Kubota BX2660 Troubleshooting

Kubota BX2660 Engine Troubleshooting

Engine starts up hard or doesn't start: Fuel filter element is dirty. Clean the filter element. There is air in the fuel system. Bleed the system. Dirty or faulty injection nozzles. If necessary, replace with a new nozzle. Faulty fuel injection pump. Change or repair the pump.

Engine shuts off while running: Timing of fuel injection pump is incorrect. Adjust fuel injection pump as required. Fuel filter element is clogged. Service or replace the filter. Engine not warmed up. Warm up the engine.

Engine starts but stalls immediately: Fuel filter element clogging. Clean or change the filter. Fuel injection pump is broken. Install a new fuel pump or repair. Plugged air filter. Clean or replace element.

Engine overheated: Dirty radiator fins or defective radiator cap. Clean radiator or change cap. Engine coolant is insufficient. Refill to the correct level and inspect system for leaks. Fan belt slipping or worn. The fan belt needs to be replaced. Engine oil level is low. Fill up the oil to required level.

Engine is not running at maximum power: Fuel injection nozzles fault. Change fuel injection nozzles. Restricted fuel hoses or lines. Fuel hoses and lines must be clean. Air filter plugged. Clean air cleaner element. Cylinder-head gasket is leaking. Replace the gasket as required.

Abnormal engine noise or knocking: Engine is cold. Engine is not warmed up to the required temperature. Insufficient engine oil. Add oil to the engine crankcase. Improper fuel injection timing. Set up as recommended. Scored or worn pistons. Replace the pistons. Connecting rod is defective or not aligned. Need to change or align the connecting rod.

Engine stalls at idle: Low idle speed adjustment is incorrect. Correct low idle settings. Valve clearance is out of adjustment. Adjust to proper valve clearance. Damaged fuel injection pump. Rebuild or replace pump.

Oil pressure too low: Engine oil insufficient. Fill up the engine oil. Oil pump is damaged. Replace as required. Oil filter is clogged. Change or service engine oil filter.

Kubota BX2660 Hydrostatic Transmission Troubleshooting

Hydrostatic transmission makes excessive noise: Speed control linkage is defective or unadjusted. Change or adjust linkage. Transmission is under excessive load. Reduce the load is required. Low transmission oil level or contaminated oil. Add oil to proper level or pour fresh transmission oil. Relief valve failure. Replace relief valve as required. Defective or worn transmission parts. After disassembling and inspection, change defective components.

Transmission fluid overheats: Excessive transmission load. Reduce the load is required. Plugged or defective cooling components. Check all cooling components and change or repair if required. Low oil level. Check and refill the transmission oil. Transmission oil filter element clogging. Service or replace the transmission oil filter.

Loss of power: Low oil level. Check and refill the transmission oil. Relief valve failure. Replace valve as required. Worn or unadjusted speed control linkage. Replace or adjust linkage.

Transmission fluid leaks: Plugged transmission fluid return tube. Service or replace return tube. Seals or gaskets are worn. Install new seal or gaskets. Transmission case internal pressure is too high. Repair or replace damaged components.

Kubota BX2660 Hydraulic System Troubleshooting

Hydraulics overheating: Hydraulic fluid type is wrong. Use correct type of hydraulic fluid. Dirty hydraulic oil. The oil must be changed. Air in the hydraulic system. Air bleeding. Main relief valve is defective. Change relief valve.

Low hydraulic system pressure: Low hydraulic fluid level. Fill the system to proper hydraulic fluid level. Hydraulic oil filter is clogged. Install a new hydraulic filter element. Leaks in hydraulic lines. Find leaks in the system and fix it. Incorrect adjusted hydraulic control valve. Adjust correctly. Hydraulic pump malfunction. Install a new hydraulic oil pump. Hydraulic cylinder malfunction. Repair or change hydraulic cylinder.

3-point hitch can't lift or lifts too slowly: Hydraulic pump failure. Replace or repair hydraulic oil pump. Main relief valve is faulty. Change relief valve. Faulty hydraulic spool valve. Repair or replace the valve. Hydraulic cylinder is faulty. Install a new hydraulic cylinder or repair it. Low hydraulic oil level. Need to add oil. Dirty hydraulic fluid filter. Clean or replace the hydraulic filter. Hitch is under excessive load. Reduce loading.

3-point hitch does not lower or lowers very slowly: Hydraulic cylinder malfunction. Install a new hydraulic cylinder or repair it. Hydraulic control valve is out of adjustment. Need to make adjustment. Worn hitch cross shaft. Replace the shaft. Unadjusted hitch. Adjust 3-point hitch as required.

Hitch lift or drop is jerky: Contaminated hydraulic fluid. Change hydraulic fluid. Hydraulic pump is faulty. Replace or repair hydraulic oil pump. Air in hydraulic system. Bleed air from hydraulic system. Damaged hydraulic control valve. Change or repair hydraulic valve. Hydraulic cylinder failure. Replace or repair hydraulic cylinder.

Kubota BX2660 Steering Troubleshooting

Steering wheel free play is excessive: Steering column coupling or shaft is worn. Replace faulty part. Steering pump not working. Install a new steering pump. Steering linkage joints are worn or loose. Repair or replace steering linkage. Hydrostatic steering unit has wear or damage. Repair or change the steering unit.

Steering wheel is difficult to turn: Air in steering system. Bleed the steering system. Dirty steering filter. Clean or replace filter element. Low steering fluid level. Fill the steering system with fluid. Hydrostatic steering unit has wear or damage. Inspect and replace as required. Steering pump is faulty. Steering pump needs to be replaced or repaired. Steering pump control valve is stuck or worn. Service or change control valve. Improperly installed or damaged steering column. Install the steering column as required or replace it. Front tyres are worn unevenly. Install new tyres. Incorrect toe-in. Adjust toe-in properly. Steering cylinder leaks. Change worn piston rod or damaged cylinder seals.

Tractor pulls to left or right: Defective or worn hydrostatic steering unit. Change or repair steering unit if required. Steering cylinder is damaged. Change or repair hydraulic steering cylinder. Incorrect toe-in. Adjust toe-in properly. Steering linkage joints are worn or loose. Inspect and change as required. Front wheel bearings are defective or improperly adjusted. Adjust correctly or replace bearings. Tyre pressure is uneven. Adjust the tyre pressure.

Kubota BX2660 Electrical Troubleshooting

Battery won’t charge: Corroded or loose cable connections. Service or tighten cable connections. Battery terminal connectors are defective. Install new terminal connectors. Worn-out battery. Replace the battery. Loose or defective belt. Adjust belt tension or replace belt.

Starter turning slow: Low battery voltage. Charge the battery. Battery discharges quickly. Service charging system or change battery. Battery cables are disconnected or terminals are faulty. Check cables and service or change terminals.

Starter will not crank: Battery is discharged or defective. Recharge or change battery. Battery cables are disconnected or improperly connected. Inspect cables and connect properly. Low battery output voltage. Battery is drained, recharge it. Starter motor is faulty. Change or repair starter.