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John Deere 145 Tractor Problems

John Deere 145 Engine Troubleshooting

Engine will not start

Empty fuel tank - Add fuel.
Incorrect fuel grade - Change fuel.
Stale fuel - Drain gasoline and fill fresh up.
Water or air in fuel system - Remove air or water from system.
Plug connection defective - Replace if necessary.
Spark plug damaged - Spark plugs need to be replaced.
Plugged fuel filter - Fit new filter.
Defective safety switch - Replace if required.
Carburetor is clogged - Clean the carburetor.
Inspect and adjust choke. Compression problems.

Engine hard to start

Spark plug worn out - Test spark and change as required.
Carburetor not adjusted - Adjust according to instructions.
Fuel lines are clogged - Clean the system carefully.
Throttle cable worn - Install new throttle cable.
Old or improper fuel - Pour quality fuel.
Electrical wiring worn out - Inspect and replace wiring as needed.
Starter is not working - Inspect the starter and change defective parts.

Engine runs unevenly

Cooling fins are clogged - Clean and wash cooling fins.
Electrical contacts are damaged - Inspect and restore defective contacts.
Ignition setting defective - Check spark plug and ignition.
Choke cable sticks - Repair or replace.
Air cleaner dirty - Replace air cleaner.

Engine runs but misses

Spark plug failed - Replace spark plug.
Carburetor malfunction - Inspect and overhaul.
Ignition coil defective - Test ignition coil and replace if necessary.

JD 145 Engine overheats

Excessive engine load - Reduce the load.
Air intake screen plugged - Clean clogged components.
Too little or too much oil - Checking oil level and oil pressure.
Incorrect engine oil viscosity - Change oil.
Inspect crankshaft to main bearing clearance.
Fast idle speed - Adjusting fast idle speed.

Engine does not idle

Poor spark plug contact - Adjust spark plug gap.
Spark plug worn out - Test spark and change as required.

Engine knocks

Stale fuel - Use correct fuel.
Engine overload - Reduce loads.
Low oil level - Add to required level.
Engine runs at low revs - Adjust carburetor as needed.
Piston rings and cylinder bore worn - Check cylinder bore and rings for wear.
Inspect for engine overheats from clogged cooling fins.
Checking and adjusting valve clearance.
Check for carbon build-up in combustion chamber.

Engine back-fire

Inspect spark plug and change if required.
Inspect and adjust choke.
Check and adjust carburetor.
Check and adjust ignition coil air gap.
Check for sticking valves.
Check valve clearance, adjust if required.
Checking flywheel key.

Loss of power

Engine temperature too high - Replace air cleaner.
Overfilling engine oil - Excess oil must be drained.
Fuel pump problems - Testing fuel pump output.
Defective governor - Inspect and repair governor.
Inspect and repair carburetor.
Check engine compression.

John Deere 145 Engine getting too much fuel

Choke didn't open fully - Replace throttle cable.
Carburetor is not working properly - Adjust or repair carburetor.

Exhaust with black smoke

Air cleaner element clogged - Check and clean.
Choke not fully engaged - Inspect and adjust throttle.
Check and adjust carburetor float level.

JD 145 Electrical Troubleshooting

Starter motor will not turn engine

Blown main fuse - Installing new fuse.
Poor terminal connection - Clean terminals.
Low-voltage battery - Battery charging required.
Ignition lock is damaged - Replace the lock.
Starter is damaged - Repair or replace.
Electrical wires are damaged - Change wiring.

Battery does not charge

One or several cells defective - Fit new battery.
Bad contact between battery pole and cable - Replace or clean cable.

Lights do not work

Light connector defective.
Check lamps.
Wiring damaged.

John Deere 145 Machine Problems

Tractor vibrates too much or rattles excessively

Attachment drive belts worn or damaged - Inspect and replace damaged belt.
Traction drive belt worn - Check and replace belt.
Drive sheaves are dirty - Replace if necessary.
Unbalancing or bending of blades - Change defective blades.

Tractor doesn't move when engine runs

Parking brake holds the tractor - Disengage the park brake.
Bypass valve lever activated - Set bypass valve to the off position.
Mower blade could be loose - Check mower blades and fasten as required.
Poor balancing after sharpening - Check blades for damage and balance as required.
Transmission oil too low - Check transmission oil lever.

John Deere 145 Mower Deck Troubleshooting

Plugged discharge chute

Operating at a faster ground speed - Use slower speed.
Grass too long - Adjust cutting height.
Grass too wet - Don't mow while wet grass.
Engine runs at low revs - Engine speed must be increased.
Loss of airflow - Check engine rpm.
Lack of cutting height - Adjust to higher cutting.
Belt fitted improperly - install belt as required.

Uncut grass during operation

Mower deck clogged - Clean mower deck.
Blades dull or damaged - Installing new blade.
Deck too low - Checking and adjust deck height.
Grass bag overfilled - Empty bagger.
Traveling too fast - Choose recommended speed.

Belt Slipping

Sheave is dirty - Recommend cleaning the sheaves.
Worn belt - Fit new belt.
Belt tension problems - Install the belt correctly.

Excessive mower vibration

Mower deck clogged or in sheaves - Clean mower deck and sheave from debris.
Worn belt or sheave - Replace defective components.
Belt or pulleys no adjustment - Check and align.
Improper blade balancing - Balance blades properly.

Blades scalp grass

Cutting height too low - Set the correct cutting height.
Mower rollers height wrong - Check wheel adjustment.
Low tire pressure - Inflate tires as required.
High blade speed during mowing - Blade speed required.
Bent mower blades - Remove bent blade and install new one.

Uneven Cut

Deck level is too low - Adjust and level the deck height.
Tire pressure uneven - Tire pressure required.
Wrong wheel position - Check the wheel heights.
Speed too high - Need to reduce speed.
Mower blades blunt - Install new 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