________________________________________________________________________________

Kubota M4900 - Problems and Solutions

Lately I noticed the damage with my M4900 tractor. Diesel engine does not crank over. Explain me what is the probable malfunction?

Fuel grade is wrong. Fault in fuel injection pump. Inspect and replace. Wrong fuel pump timing. Adjust as required.

Kubota M4900 damages. Loss of power. How can I fix an issue?

There is no full fuel feed due to misalignment of fuel pump control rods. Adjust control rods.

Tell me what is damage if irregular diesel engine running?

Governor, plunger or sliding disc sleeve seized. Check, repair or replace them.

M4900 tractor issue. Transmission shift hard at low speeds. What's the reason?

Front bearing retainer loose or cracked - Tighten or replace retainer.

Please tell me why my steering wheel spinning not resisting? What do I need to do to troubleshoot?

Minimum Oil Rating - It is required to add oil. Steering cylinder has damage - Make a replacement. Steering pump have worn - Replace pump.

I acquired a Kubota M4900 in february. Nowadays there is problem. Diesel will not start. Could anyone help me define a source of failure?

Starter turns bad - Check starter and replace if necessary. Fuel pipes are contaminated - Flush and clean the fuel pipe. The fuel filter element is dirty - Replace it. Piston rings are broken - Install new piston rings.

I use the same model. Recently I noticed steering wheel operate bad. Can anybody tell me what is problem?

Minimum Oil Rating. Air bubbles in hydraulic system. Bleed air out of the system. Check the suction pipe and rectify any leakage. hydraulic connection leaking. It is necessary to eliminate a fault. Power steering pump defect. Replace the pump. Power steering is damaged. Requires repair.

M4900 tractor issue. Engine cranks but will not start. Please help me find occasion of trouble. What do I need to check?

Fuel inlet needle sticking to seat. Fuel pump dirty or out of adjustment. Incorrect functions of the cold start system. Piston rings are wear or deformed. Gasket Blow-By or Leakage. Water in fuel. Fuel too heavy at low temperature.

Kubota M4900 diesel damages. Diesel motor long starting regularly. How could i fix malfunction?

Restriction in fuel tank vent. Air leaks on suction lines. Clogging in exhaust pipe. Low voltage - Charge battery. Injection fuel is little or the spray is not excellent. Filter clogged. Long Idle periods.

Steering doesn’t function on our tractor. What's a breakdown?

The hydraulic system has air. You should draw out air. The minimum oil indicator in system. Top up the oil. Steering cylinder has problems Repair it.

I own the exact same model. Why motor does not start? How could i resolve an issue?

Improper valve timing - Make adjustment. Compression increase. Cylinder bores are worn - Repair it. Leaks between valves and seats - Remove leaks.

Kubota M4900 failures. Diesel engine knocks. what kind of malfunction?

Oil of small quantity. Fill up. Engine overheated. Engine overloaded.

I can't figure it out why tractor front axle to rattle continuously at work?

Defective gear. It is recommended to replace the gear. Roller bearings are very worn out. Swap the replacement.

I own this model less than five years. Regularly diesel starting is very difficult. What a breakdown?

Injection nozzle has clog. Need to check injector. High-pressure fuel pump problems. Install a new injection pump.

I bought the same tractor. Answer my question what's problem if locking differential breaks down immediately? How to solve the problem?

The diaphragm torn or discs friction clutch worn out. You have to make repairs.

Our company has M4900 tractor. Motor does not start. I need to know can i fix the problem?

Possibly Dirt in the fuel system. Or high-pressure fuel pump is improperly adjuste.

Need help. Engine overheats regularly. How can I fix it?

Coolant level lowered. Pour liquid into radiator to recommended level. Engine air intake screen plugged. Engine gets overload - Decrease load or shift to low gear. Thermostat faulty - Replace. Engine overloaded - Reduce engine load. Fan belt is damaged. Change as required.

My dad uses Kubota M4900. Yesterday he diagnosed knocking in the rear axle. What problem tell me?

These symptoms denote defect in the axle reducer.

Can someone say me why diesel engine emits white smoke?

If white gas comes from the exhaust pipe you required to replace piston rings immediately. Oil level too high - Reduce to correct quantity.