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John Deere GX345 Tractor Problems

John Deere GX345 Engine Problems

Engine starting problems

Empty fuel tank - Add gasoline.
Incorrect fuel grade - Use quality gasoline.
Old fuel - Drain fuel and fill up fresh.
Dirty fuel lines - Inspect and clean.
Spark plug defective - Inspect and replace if required.
Spark plug damaged - Test ignition spark.
Fuel filter is dirty - Fit new filter.
Faulty safety switch - Change damaged switch.
Carburetor is not working properly - Inspect and adjust.
Inspect and adjust throttle cable. Compression problems.

Gas engine hard to start

Spark plug failed - Check the spark and change defective spark.
Carburetor not adjusted - Adjust according to instructions.
Clogged fuel lines - Clean fuel system components.
Throttle cable worn - Install new throttle cable.
Stale or improper fuel - Drain and add proper fuel.
Electrical connections are damaged - Inspect and change.
Starter is not working - Test starter and repair if necessary.

Rough running engine

Clogged cooling fins - Clean cooling fins.
Electrical contacts are damaged - Check and repair defective connections.
Ignition adjustment lost - Inspect spark plug and ignition system.
Choke cable sticking - Check and repair.
Air filter blocked - Replace air cleaner.

JD GX345 Engine runs but misses

Spark plug failed - Check spark plug wire for wet or deteriorated condition.
Carburetor malfunction - Inspect and overhaul.
Ignition coil not working - Replace defective component.

Engine overheating

Excessive engine load - Reduce the load.
Air intake screen blocked - Clean dirty components.
Engine oil low or too high - Inspect oil pump for damage or worn.
Poor quality oil - Change oil.
Check connecting rod to crankshaft bearing clearance.
Idle speed problems - Adjust carburetor idle mixture screw.

Engine does not idle

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

Engine knocks

Stale gasoline - Use correct gasoline.
Engine overloaded - Reduce the load.
Lack of engine oil - add oil as required.
Engine speed too low - Adjust the required speed.
Piston rings and cylinder bore are wear - Replace damaged parts.
Check for engine overheating from plugged cooling fins.
Inspect and adjusting crankshaft end play.
Check for carbon build-up in combustion chamber.

John Deere GX345 Engine back-fire

Checking spark plug.
Inspect and adjust choke.
Checking and adjusting carburetor.
Inspect and adjust ignition coil air gap.
Inspect for sticking valves.
Checking and adjusting valve clearance.
Inspect flywheel key.

Engine loses power

Engine temperature too high - Change air filter.
Excess engine oil - Excess oil needs to be drained.
Fuel pump is not working properly - Testing fuel pump output.
Governor not work - Checking and adjusting governor.
Check and overhaul carburetor.
Check engine compression.

Engine using too much gasoline

Choke is not fully open - Adjust choke cable.
Carburetor problems - Checking and adjusting carburetor.

Emits black smoke

Air filter element plugged - Clean or replace filter.
Throttle is partially engaged - Inspecting and adjusting choke.
Check and adjust carburetor float level.

JD GX345 Electrical System Troubleshooting

Starter motor will not turn engine

Main fuse defective - Check and replace.
Battery contacts are corroded - Inspect and clean contacts.
Weak battery - Charge the battery.
Ignition switch is damaged - Replace the lock.
Faulty starter - Repair or replace.
Electrical wires are damaged - Change wiring.

Battery does not charge

One or several cells defective - Install new battery.
No contact between cable and battery terminal - Inspect and Clean.

Lighting does not function

Light plug disconnected.
Check light bulbs.
Check wiring for short circuit.

John Deere GX345 Machine Troubleshooting

Excessive tractor vibration

Implements driven belt damaged or worn - Check and replace worn belt.
Worn traction drive belt - Install new belt.
Drive pulley is dirty - Replace if necessary.
The mower deck blades are bent or unbalanced - Replace damaged blades.

Engine runs but tractor won't move

Parking brake holds the tractor - Release the park brake.
Bypass valve lever is engaged - Set bypass valve to the off position.
Blades loose - Check mower blades and fasten as required.
Poor balancing after sharpening - Balance the mower blades correctly.
Too little transmission oil - Add transmission oil.

JD GX345 Lawnmower Troubleshooting

Clogged discharge chute

Travel speed too fast - Need to reduce speed.
Grass too long - Adjust the mower to a lower cutting height.
Wet grass - Wait for the grass to dry.
Engine rpm reduced - Adjust carburetor to higher rpm.
Loss of airflow - Check engine speed.
Mower deck set to low cutting - Adjust to higher cutting.
Belt fitted improperly - Check belt installation.

Streaking of uncut grass

Mower deck clogged - Inspect and clean cutting deck.
Excessive blade wear - Installing new blade.
Mower deck low - Level mower deck.
Grass bag too full - Clean bagger.
Traveling too fast - Do not use high speed.

Slipping drive belt

Sheave is dirty - Pulley cleaning required.
Drive belt wear - Install new belt.
Belt tension improper - Correct belt tension.

John Deere GX345 Mower vibrates

Mower clogged or in pulleys - Remove debris from the pulley or deck.
Belt or pulley faulty - Change defective components.
Misaligned belt or pulley - Inspect and centering.
No blade balance adjustment - Balance blades properly.

Blades scalping grass

Cutting height improper - Check and adjust height.
Mower wheel height incorrect - Adjust mower deck wheels.
Insufficient tire pressure - Check and inflate the tires.
Faster mower blade speeds - Adjust the speed of blades.
Bent mower blades - Remove bent blade and install new one.

Uneven Cut

Mower deck low - Checking and adjust deck height.
Low tire pressure - Check and inflate the tires.
Wheels not positioned correctly - Check wheel adjustment.
Travel speed too high - Don't use fast speed.
Mower blades dull - Sharpen the blade or install a new one.

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