Specifications, Service and Repair of Farm and Lawn Tractors

________________________________________________________________________________

MF 6485 - Operation problems

The other day I got a failure with my Massey Ferguson 6485. Diesel doesn't crank over. Explain me what is the failure?

You must use the recommended fuel grade. Fault in fuel injection pump. Check and overhaul. Incorrect fuel pump timing. Adjust as required.

MF 6485 failures. Insufficient engine power. How can I fix an issue?

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

Help with the question what happened if engine stalls?

Air in fuel supply system - Bleed air. Piston seizing. Check and replace it.

6485 model problem. Transmission shift hard at low speeds. What could it be?

Linkage binding, bent, or loose - Free, straighten, or tighten as needed.

I would like to know why my steering wheel spinning without opposition? What should I do to correct the situation?

Low oil index - Top up the oil. The steering cylinder is heavily worn - Replace the defective part. The steering pump is defective - Repair pump.

I acquired a MF 6485 in march. Today there is problem. Engine will not start. Could anybody help me find the source of trouble?

Starter turns bad - Change or restore. Restriction in a fuel pipe - Clean and wash. There is dirt in the fuel filter - Replace it. Piston ring failure - Must be repaired.

I have the same tractor. Yesterday I saw steering wheel turns hard. Tell me what's issue?

The minimum oil level. Incorrect toe-in. Improper alignment of front wheels - Replace tie-rod. Breakage of hydraulic hoses. It is necessary to eliminate a fault. Steering pump is defective. Install the new pump. Wear of power steering. Replace it.

6485 tractor problem. Engine cranks but not starting. Help me define the source of breakdown. What should I check?

Choke cable not adjusted properly. Choke not operating properly. Cold start system used incorrectly. Damage or wear of piston rings. High pressure fuel pump drive shaft is broken. Water mixed in the fuel. Fuel too heavy at low temperature.

Massey Ferguson 6485 diesel malfunctions. Engine is difficult to start sometimes. How could i fix malfunction?

Clogging in fuel tank vent. Air leaks on intake hoses. Exhaust pipe is clogged. Slow starter speed. Injection fuel is little or the spray is not excellent. Filter clogged. Fuel shut-off valve closed. Open fuel shut-off valve.

Steering stopped working on our tractor. What's a breakdown?

The air is in hydraulic system. You should remove air. Oil low level in system. Pour completely. Problem with the hydraulic steering cylinder Repair it.

I own the exact same model. Why diesel does not start? How could i fix it?

Improper valve timing - Adjust valve timing. Bad compression. Cylinder bores are worn - Repair it. Leakage between seats and valves - Remove leaks.

6485 tractor damages. I hear a diesel engine knocking. what is the damage?

Lack of oil. You should pour this. Low engine speed. Oil level low.

I can't figure it out why front axle produces a rumble regularly when tractor run?

Teeth of gears collapsed. Replace gears. Bearings have damage. Fit new bearings.

I own this tractor about 4 years. Recently, engine start is difficult. What you need to fix?

Injection nozzle is clogged. Need checking injector. Injection pump has a malfunction. Replace injection pump.

I have the same tractor. Tell me what reason if differential lock assembly is defective swiftly? What's solution to the problem?

Diaphragm worn out or replace friction clutch discs. You have to make repairs.

I'm using Massey Ferguson 6485. Engine not working. Help me how can I fix this?

Most likely Dirt in the fuel system. Otherwise injection pump not adjusted.

Please help me. Diesel overheats regularly. How can I fix it?

Low coolant level - Fill coolant and check cooling system for loose connections or leak. Radiator screen or fins clogged - Clean radiator screen or fins. Engine overloaded. Shift to lower gear or reduce load. Loose or fan belt issue - Adjust fan belt and replace if needed.

My dad uses MF 6485. Yesterday he heard a loud knocking in the crankcase of the drive axle. What is the malfunction?

All signs point to bearing problems.

Please explain me what damage if motor excessive white smoke at idle?

When white smoke visible from the exhaust pipe you need to replace piston rings urgently. Worn cylinder liner and piston rings. Replace them with new ones.

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________