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John Deere X140 Tractor Problems

John Deere X140 Engine Problems

Engine starting problems

Gas tank is empty - Add gasoline.
Wrong grade of gasoline - Change gasoline.
Stale gas - Drain fuel and add fresh.
Air or water in fuel system - Remove water or air from fuel system.
Spark plug wire is loose or disconnected - Check the spark plug wires.
Spark plug damaged - Check ignition spark.
Fuel filter is clogged - Replace fuel filter.
Faulty safety switch - Change damaged switch.
Carburetor is clogged - Clean the carburetor.
Check starter cranking RPM. Check the Valves and Compression System.

Gas engine hard to start

Spark plug failed - Check the spark and change defective spark.
Problems with carburetor adjustment - Adjust as required.
Fuel lines are clogged - Service required.
Choke cable damaged - Replacement required.
Old or incorrect fuel - Pour quality fuel.
Loose or corroded electrical connections - Checking and replace.
Failing starter - Test starter and repair if necessary.

Engine runs roughly

Cooling fins blocked - Clean cooling fins.
Loose electrical connections - Inspect and repair defective contacts.
Ignition adjustment lost - Check spark plug and ignition.
Choke cable sticks - Check and change if required.
Air filter blocked - Change air cleaner.

JD X140 Engine misses under load

Spark plug failed - Test spark plug.
Carburetor defective or not adjusted - Repair or adjust.
Ignition coil defective - Test ignition coil and replace if necessary.

Engine overheating

Engine runs under excessive load - Reduce loads.
Cooling fins or air inlet plugged - Clean clogged components.
Engine oil high or too low - Add or drain oil.
Incorrect engine oil viscosity - Change engine oil.
Check internal bearing clearance.
Idle speed problems - Adjusting fast idle speed.

Engine will not idle

Spark plug is loose - Check spark plug gap.
Faulty spark plug - Check the spark and change defective spark.

John Deere X140 Engine knocks

Low octane fuel - Use proper fuel.
Excessive engine load - Reduce loads.
Lack of engine oil - Add engine oil.
Engine is running at low revs - Adjust carburetor.
Cylinder bore and rings are wear - Check cylinder bore and rings for wear.
Check for engine overheating from plugged cooling fins.
Check and adjust crankshaft end play.
Checking for wear crankshaft or camshaft bearings.

Engine backfires

Inspect spark plug and change if required.
Adjust or change the throttle.
Check and adjust carburetor.
Check and adjust ignition coil air gap.
Check for sticking valves.
Test valve clearance, adjusting if necessary.
Inspecting flywheel key.

Loss of power

Engine overheating - Clean or replace air filter.
High engine oil - Drain excess oil.
Fuel pump broken - Repair or replace fuel pump.
Faulty governor - Repair or replace governor.
Inspect and repair carburetor.
Checking engine compression.

Engine using too much gasoline

Insufficient throttle opening - Adjust throttle cable.
Carburetor malfunction - Checking and adjusting carburetor.

Black exhaust smoke

Air cleaner element plugged - Clean or replace filter.
Throttle not fully engaged - Inspecting and adjusting throttle.
Inspect carburetor needle valve and seat for wear or damage.

John Deere X140 Electrical System Troubleshooting

Starter does not run

Main fuse malfunction - Install new fuse.
Battery contacts are corroded - Clean terminals.
Weak battery - Battery charging required.
Ignition switch is damaged - Replace the lock.
Starter fault - Change the starter.
Wires disconnected - Replace wiring.

Battery will not charge

Battery cells fails - Replace the battery.
No contact between cable and battery terminal - Clean or replace cable.

Lights do not work

Light plug defective.
Check light bulbs.
Short circuit in electrical wires.

JD X140 Machine Troubleshooting

Tractor vibrates too much or rattles excessively

Implements drive belts damaged or worn - Check and change worn belt.
Worn traction drive belt - Install new belt.
Drive pulley is dirty - Fit new pulley.
Cutting blade loose or unbalanced - Change as needed.

The engine is running but tractor is not moving

Parking brake locked - Unlock park brake.
Bypass valve lever activated - Disengage the bypass valve lever.
Mower blades are loose - Checking blades for loose bolts.
Incorrect blade balance - Inspect the blades and balance if necessary.
Too little transmission oil - Add transmission oil.

John Deere X140 Mower Deck Troubleshooting

Plugged discharge chute

Ground speed too fast - Choose recommended speed.
Grass Too Tall - Adjusting cutting height.
Grass too wet - Do not mow when grass is wet.
Engine is running at too low speed - Open throttle wide.
Lack of air flow - Check engine speed.
Lack of cutting height - Change cutting height.
Incorrect belt installation - Reinstall the belt properly.

Lawn mower leaving uncut grass

Cutting deck clogging - Deck cleaning required.
Excessive blade wear - Inspect and fit new blade if required.
Mower deck is low from ground - Deck leveling required.
Bagger too full - Empty the grass bag.
Ground speed too fast - Choose recommended speed.

Slipping drive belt

Pulley is dirty - Pulley cleaning required.
Worn belt - Install new belt.
Belt tension is incorrect - Check and adjusting belt tension.

The lawn mower vibrates excessively

Mower deck clogged or in sheaves - Remove clogging from mower deck or sheaves.
Pulley or belt faulty - Change defective components.
Belt or sheaves no adjustment - Check and adjust.
Incorrect blade balancing - Blade balance required.

Blades scalping grass

Cutting height improper - Set the correct cutting height.
Mower rollers not adjusted improperly - Check wheel adjustment.
Low tire inflation - Increase tire pressure.
Blades speed too fast - Balance mower speed.
Blades are bent - Remove bent blade and fit new one.

Uneven Cut

Mower deck not level - Checking and adjust deck height.
Insufficient tire pressure - Increase tire pressure.
Rollers not positioned properly - Adjust front or back wheel height.
Speed too high - Need to reduce speed.
Mower blades dull - Checking for blade fault and change if required.

JOHN DEERE TRACTORS ATTACHMENTS
420	430	455	790	990
X300	X320	X330	X350	X475
X485	X500	X540	X570	X590
X700	X720	X738	X758	1023E
2025R	2210	2520	3025E	3032E
3038E	3038R	3039R	3046R	3203
3320	3520	4052R	4066R	4100
4105	4115	4200	4310	4320
4400	4410	4520	4600	4720

JD TRACTORS TROUBLESHOOTING
2640	3040	3310	3650	4100
5050D	5090R	5410	6105R	7200R
E130	L111	LA110	LT155	X300R