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John Deere 345 Troubleshooting

John Deere 345 Engine Problems

Engine will not start

Gas tank is empty - Fill gasoline up.
Low-quality gasoline - Use correct fuel grade.
Stale fuel - Drain gasoline and add fresh.
Dirty fuel system - Check and clean.
Plug connection defective - Install new spark plug wires.
Spark plug damaged - Spark plugs need to be replaced.
Dirty fuel filter - Replace fuel filter.
Safety contact for brake pedal defective - Install new part.
Incorrect carburetor adjustment - Adjust carburetor idle mixture screw.
Inspect and adjust choke. Test compression.

Engine starts hard

Spark plug malfunction - Test spark and replace as required.
Carburetor incorrectly set - Set carb correctly.
Clogged fuel pipes - Clean fuel system components.
Throttle cable damaged - Change the cable.
Stale or improper fuel - Pour quality fuel.
Loose or corroded electrical connections - Inspect and replace.
Starter problems - Check the starter and replace defective components.

Engine runs unevenly

Cooling fins are clogged - Clean cooling fins.
Electrical contacts are damaged - Inspect and restore defective contacts.
Ignition system problems - Check ignition and adjust if necessary.
Choke cable sticking - Check and change if required.
Air cleaner blocked - Replace air cleaner.

Engine misses

Spark plug fail - Check spark plug for fouled condition and proper gap.
Carburetor is not adjusted correctly - Adjust carburetor as required.
Ignition coil is damaged - Inspect ignition coil and change if required.

Engine overheating

Engine overloaded - Reduce the load.
Air inlet or cooling fins blocked - Clean and wash dirty components.
Engine oil high or too low - Add or drain oil.
Improper engine oil viscosity - Change oil.
Check connecting rod to crankshaft bearing clearance.
Idle speed problems - Adjust carburetor idle mixture screw.

Engine does not idle

Poor spark plug contact - Check tightness of spark plug.
Spark plug malfunction - Inspect the spark, replace if necessary.

JD 345 Engine knocking

Stale gasoline - Change gasoline.
Engine overloaded - Reduce the load.
Oil level low - add oil as required.
Engine is running at low revs - Adjust carburetor.
Cylinder bore and rings are wear - Replace damaged parts.
Inspect for engine overheats from clogged cooling fins.
Inspect and adjusting crankshaft end play.
Checking for wear crankshaft or camshaft bearings.

Engine backfires

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

Engine lacks power

Engine overheating - Check air cleaner for plugged condition.
High engine oil - Remove excess oil.
Fuel pump is not working properly - Test fuel pump output.
Governor is damage - Checking and adjusting governor.
Check and overhaul carburetor.
Checking engine compression.

Engine getting too much fuel

Choke is not fully open - Inspect choke cable.
Incorrect carburetor adjustment - Checking and adjusting carburetor.

Black exhaust smoke

Air cleaner element clogged - Clean or replace filter.
Throttle is partially engaged - Inspecting and adjusting choke.
Checking and adjusting carburetor float level.

John Deere 345 Electrical System Troubleshooting

Starter does not run

Main fuse malfunction - Check and replace.
Poor terminal connection - Clean terminals.
Low battery voltage - Need to charge the battery.
Ignition lock problems - Replace the lock.
Faulty starter - Install new starter.
Wires disconnected - Replace wiring.

Battery will not charge

Dead cell in the battery - Replace the battery.
Battery terminals and cables are dirty - Clean or replace cable.

No Lights work

Light plug disconnected.
Check light bulbs.
Wiring damaged.

JD 345 Machine Problems

Tractor vibrates excessively

Attachment driven belt worn or damaged - Inspect and change damaged belt.
Traction drive belt worn - Installing new driven belt.
Drive pulley is dirty - Clean the sheaves.
Blades bent or out of balance - Change as needed.

Engine runs but tractor won't move

The parking brake is locked - Disengage the park brake.
Bypass lever is on - Set bypass valve to the off position.
Blade becomes loose - Fasten the blades securely.
Poor balancing after sharpening - Balance the mower blades correctly.
Transmission oil is insufficient - Pour oil as required.

John Deere 345 Lawn Mower Troubleshooting

Discharge Chute Clogged

Traveling too fast - Do not use high speed.
Grass Too Tall - Adjust cutting height.
The grass is wet - Wait until the grass dries.
Low engine speeds - Adjust choke to full opening.
Loss of airflow - Set higher revs.
Cutting too low - Adjust to higher cutting.
Belt installed incorrectly - Fit belt correctly.

Patches of grass uncut

Mower's cutting deck is clogged - Mower deck needs cleaning.
Blades dull or damaged - Install new blade.
Mower deck low - Leveling the mower deck.
Grass bagger overfilled - Clean bagger.
Speed too high - Use slower speed.

Slipping drive belt

Debris in sheaves - Clean or replace.
Drive belt wear - Check and change damaged belt.
No belt tension required - Check and adjusting belt tension.

Excessive mower vibration

Debris in pulleys or in mower deck - Remove debris from the pulley or deck.
Worn pulley or belt - Change damaged parts.
Belt or sheaves no adjustment - Check and align.
Incorrect blade balancing - Balance the blades.

Blades scalp grass

Cutting height improper - adjust cutting height.
Mower rollers not adjusted improperly - Adjust wheel heights correctly.
Low tire inflation - Tire pressure required.
Faster mower blade speeds - Balance mower speed.
Blades are bent - Remove bent blade and install new one.

Uneven cutting results

Mower deck not level - Leveling the mower deck.
Insufficient tire pressure - Check and inflate the tires.
Incorrect rollers height - Adjust mower deck wheels.
Ground speed too high - Choose recommended speed.
Mower blade worn or bent - Check for blade damage and replace if necessary.

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