________________________________________________________________________________

John Deere GX325 Tractor Problems

John Deere GX325 Engine Troubleshooting

Engine not to start

Empty gas tank - Add fuel.
Improper fuel grade - Change fuel.
Old gas - Drain fuel and add fresh.
Dirt and debris in fuel system - Remove debris and dirt.
Defective spark plug wires - Check the spark plug wires.
Spark plug damaged - Spark plugs need to be replaced.
Dirty fuel filter - Fuel filter needs changing.
Safety contact for brake pedal defective - Install new part.
Carburetor is not adjusted - Check carburetor float adjustment.
Check starter cranking RPM. Check the Valves and Compression System.

Engine is difficult to start

Spark plug wear - Inspect the spark, change if necessary.
Carburetor components worn out - Repair or replace parts.
Clogged fuel lines - Servicing fuel system.
Worn throttle cable - Replace as required.
Stale or incorrect gasoline - Fill in correct fuel.
Electrical connection problems - Check and replace.
Starter fault - Check starter, repair or replace.

Engine runs unevenly

Clogged cooling fins - Clean and wash cooling fins.
Loose electrical connections - Check and repair damaged connections.
Ignition system problems - Check spark plug and ignition.
Choke cable sticking - Repair or change as needed.
Air cleaner element plugged - Clean air filter.

JD GX325 Engine stops or misses

Spark plug worn out - Inspect spark plug wire.
Carburetor is not adjusted correctly - Adjust carburetor as required.
Ignition coil is damaged - Inspect ignition coil and change if required.

Engine overheats

Excessive engine load - Reduce the load.
Air intake screen clogged - Clean clogged components.
Engine oil high or too low - Checking oil level and oil pressure.
Poor quality oil - Change oil.
Check internal bearing clearance.
Too Fast idle - Adjust fast idle.

Engine will not idle

Spark plug is loose - Tighten the spark plug correctly.
Spark plug wear - Inspect the spark, replace if necessary.

Engine knocks

Stale gasoline - Change gasoline.
Engine overloaded - Reduce the load.
Low oil level - Add engine oil.
Low engine speed - Adjust the speed.
Cylinder bore and rings are wear - Replace damaged parts.
Check for engine overheating from plugged cooling fins.
Checking and adjusting valve clearance.
Check for worn crankshaft or camshaft bearings.

John Deere GX325 Engine back-fire

Inspect spark plug and change if required.
Adjust or replace throttle.
Adjust carburetor idle mixture screw.
Checking and adjusting ignition coil air gap.
Inspect for sticking valves.
Test valve clearance, adjusting if necessary.
Inspect flywheel key.

Engine loses power

Engine temperature too high - Air cleaner element plugged.
High engine oil - Excess oil needs to be drained.
Defective fuel pump - Check fuel pump and replace if required.
Governor is damage - Repair or replace governor.
Check carburetor float adjustment.
Checking engine compression.

Engine using too much gasoline

Insufficient choke opening - Inspect choke cable.
Carburetor malfunction - Check and adjust carburetor.

Black smoke is emitted during operation

Air cleaner element plugged - Inspect and clean.
Choke partially engaged - Replace or repair choke.
Check for correct main jet for elevation.

JD GX325 Electrical System Troubleshooting

Starter does not run

Main fuse defective - Installing new fuse.
Battery contacts are corroded - Clean terminals.
Weak battery - Need to charge the battery.
Ignition switch problems - Change switch.
Starter is damaged - Change the starter.
Electrical wires are damaged - Change wiring.

Battery does not charge

Faulty cell in battery - Change the battery.
Poor contact between cable and battery pole - Replace or clean cable.

Lights do not work

Headlight wire connector disconnected.
Loose or burned out bulb.
Wiring damaged.

John Deere GX325 Machine Problems

Tractor vibrates too much or rattles excessively

Implements drive belts damaged or worn - Inspect and change damaged belt.
Traction drive belt damage - Check and replace belt.
Drive pulley malfunction - Clean the sheaves.
Mower blades malfunction - Replace damaged blades.

Engine runs but tractor won't move

Parking brake is applied - Release the parking brake.
Bypass lever is on - Disengage the bypass valve lever.
Mower blades are loose - Fasten the blades securely.
Improper blade balance - Check blade balancing.
Too little transmission oil - Add oil to the transmission.

JD GX325 Lawn Mower Problems

Clogged discharge chute

Speed too high - Operate the mower at low speed.
Grass Too Tall - Adjusting cutting height.
Grass too wet - Don't mow while wet grass.
Engine is running at too low speed - Increase engine speed.
Loss of airflow - Set higher revs.
cut too low - Choose the correct cutting height.
Improper belt installation - Install the belt correctly.

Uncut grass during operation

Mower's cutting deck is clogged - Check cutting deck and clean if necessary.
Damaged or worn blade - Checking for blade fault and change if required.
Deck too low - Checking and adjust deck height.
Grass bagger overfilled - Empty bagger.
Speed is very fast - Need to reduce speed.

Belt Slipping

Debris in pulleys - Recommend cleaning the sheaves.
Worn belt - Fit new belt.
Belt tension problems - Install the belt correctly.

John Deere GX325 Mower vibrates

Mower clogged or in pulleys - Remove debris from the pulley or deck.
Mower belt or sheave damaged - Change worn components.
Pulley or belt out of alignment - Check and centering.
Blades are not balanced correctly - Adjust blade balance.

Blades scalp grass

Cutting height improper - Raise cutting height.
Mower rollers not adjusted improperly - Adjust rear or front wheel height.
Low tire inflation - Increase tire pressure.
High blade speed during mowing - Balance mower speed.
Bent mower blades - Replace blades.

Uneven Cut

Mower deck low - Checking and adjust deck height.
Tires inflated insufficient - Increase tire pressure.
Wrong rollers position - Adjust front or back wheel height.
Operating at a faster ground speed - Need to reduce speed.
Mower blades blunt - Sharpen or replace blade.

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