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John Deere X155R Troubleshooting

John Deere X155R Engine Problems

Tractor engine not starting

No gasoline in tank - Add gasoline.
Wrong grade of gasoline - Change gasoline.
Stale gasoline - Drain gasoline and fill fresh up.
Clogged fuel system - Remove clogging.
Spark plug wires are damaged - Inspect and replace if required.
Faulty spark plug - Installing new spark plug.
Dirty fuel filter - Replace fuel filter.
Defective safety switch - Replace if required.
Carburetor problems - Carburetor diagnostics required.
Test fuel transfer pump output. Test crankcase vacuum.

Gas engine long starting

Faulty spark plug - Check the spark and change defective spark.
Carburetor not adjusted - Adjust according to instructions.
Fuel lines are clogged - Servicing fuel system.
Choke cable damaged - Replacement required.
Stale or improper fuel - Pour quality fuel.
Electrical wiring worn out - Checking and replace.
Starter is not working - Check starter, repair or replace.

Engine runs roughly

Cooling fins plugged - Clean cooling fins.
Electrical connections damaged - Inspect and replace defective contacts.
Ignition adjust incorrect - Check spark plug and ignition.
Throttle cable sticking - Repair or change as needed.
Air cleaner blocked - Clean or change air filter.

Engine misses

Spark plug malfunction - Check spark plug for fouled condition and proper gap.
Carburetor is not adjusted correctly - Adjust carburetor as required.
Ignition coil air gap incorrect - Check and adjust ignition coil air gap.

Engine overheating

Excessive engine load - Reduce the load.
Air intake screen blocked - Clean clogged components.
Too little or too much oil - Check oil level. Test engine oil pressure.
Poor quality oil - Change oil.
Check internal bearing clearance.
Fast idle speed - Adjusting fast idle speed.

Engine doesn't idle speed

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

JD X155R Engine knocking

Stale gasoline - Use correct gasoline.
Excessive engine load - Reduce the load.
Low oil level - Check oil level and add if necessary.
Low engine speed - Adjust carburetor as needed.
piston rings or cylinder bore damaged - Replace defective components.
Inspect for engine overheats from clogged cooling fins.
Checking and adjusting valve clearance.
Inspect for loose or wear connecting rods.

Engine backfires

Checking spark plug.
Adjust or replace choke.
Check and adjust carburetor.
Check and adjust ignition coil air gap.
Check for sticking valves.
Inspect and set valve clearance.
Inspect flywheel key.

Engine loses power

Engine temperature too high - Replace air cleaner.
High engine oil - Excess oil needs to be drained.
Fuel pump is damage - Test fuel pump output.
Governor is damage - Checking and adjusting governor.
Inspect and repair carburetor.
Checking engine compression.

Engine getting too much fuel

Throttle did not open fully - Adjust throttle cable.
Carburetor malfunction - Adjust carburetor.

Exhaust with black smoke

Air cleaner element clogged - Check and clean.
Throttle is partially engaged - Inspecting and adjusting throttle.
Check oil fill dipstick O-ring seal or cracked cap.

JD X155R Electrical System Troubleshooting

Starter motor will not turn engine

Blown fuse - Install new fuse.
Battery terminals are corroded - Clean connections.
Battery discharged - Need to charge the battery.
Ignition switch defective - Install new switch.
Starter is not working - Repair or replace.
Wiring disconnected - Change wiring.

Battery doesn't charge

Faulty cell in battery - Install new battery.
Bad contact between battery pole and cable - Clean or replace cable.

Lighting does not function

Light plug defective.
Bulbs defective.
Short circuit in electrical wires.

John Deere X155R Machine Problems

The machine vibrates

Equipment drive belts worn out - Belt replacement required.
Traction drive belt worn - Fit new belt.
Drive sheaves malfunction - Replace if necessary.
Mower blades malfunction - Tighten and balance blade.

Tractor will not move with engine running

The parking brake is locked - Release the park brake.
Bypass valve pulled out - Disengage the bypass valve lever.
Blade becomes loose - Tighten mower blades.
Poor balancing after sharpening - Inspect the blades and balance if necessary.
Low transmission oil - Add transmission oil.

John Deere X155R Lawn Mower Problems

Discharge Chute Plugged

Lawn mower is driving too fast - Do not use high speed.
High grass - Use a shorter cutting height.
Wet grass - Do not use the mower if grass is wet.
Engine rpm reduced - Adjust throttle to full opening.
Airflow restriction - Set higher revs.
Cutting too low - Adjust to higher cutting.
Belt installed improperly - Fit belt correctly.

Streaking of uncut grass

Debris in mower deck - Need to clean the mower deck.
Damaged or worn blade - Checking for blade fault and change if required.
Deck too low - Checking and adjust deck height.
Grass bagger overfilled - Clean bagger.
Traveling too fast - Do not use high speed.

Belt Slipping

Debris in pulleys - Check and clean.
Belt is worn out - Check and replace belt.
No belt tension required - Belt tension needs to be adjusted.

Too much mower vibration

Mower deck clogged or in sheaves - Clean pulley and deck from debris.
Mower belt or sheave damaged - Replace worn parts.
Misaligned belt or pulley - Check and centering.
Blades out of balance - Blade balance required.

Blades scalp grass

Cutting too low - Raise cutting height.
Mower height wheels not adjusted - Adjust rear or front wheel height.
Insufficient tire pressure - Tire pressure required.
Higher blade speed - Balance mower speed.
Bent blades during operation - Remove bent blade and install new one.

Uneven cutting results

Deck too low - Checking and adjust deck height.
Low tire inflation - Tire pressure required.
Wrong rollers position - Adjust wheel heights correctly.
Gear too fast - Operate the mower at low speed.
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