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John Deere X300 Problem Solving

John Deere X300 Engine Troubleshooting

Tractor engine fails to start

Gas tank is empty - Add fuel.
Wrong fuel grade - Use correct fuel grade.
Old fuel - Drain gasoline and add fresh.
Water or air in fuel system - Remove air or water from system.
Spark plug wire is loose or disconnected - Install new spark plug wires.
Spark plug not working - Change as required.
Plugged fuel filter - Change fuel filter.
Brake pedal not depressed - Press the brake pedal.
Carburetor problems - Carburetor diagnostics required.
Check and adjust governor linkage. Test compression.

Engine starts hard

Faulty spark plug - Inspect the spark, replace if necessary.
Wrong carburetor adjustment - Adjusting carburetor correctly.
Fuel pipes are clogged - Servicing fuel system.
Choke cable damaged - Replacement required.
Old or incorrect fuel - Fill in correct fuel.
Loose or corroded electrical connections - Checking and replace.
Starter problems - Test starter and repair if necessary.

Rough running engine

Cooling fins plugged - Clean cooling fins.
Electrical contacts are damaged - Inspect and replace defective contacts.
Ignition setting defective - Check ignition and adjust if necessary.
Choke cable sticking - Repair or replace.
Air cleaner element plugged - Clean air filter.

Engine misses under load

Spark plug failed - Change spark plug.
Carburetor defective or not adjusted - Repair or adjust.
Ignition coil defective - Test ignition coil and replace if necessary.

JD X300 Engine overheats

Excessive engine load - Reduce the load.
Cooling fins or air inlet plugged - Clean clogged components.
Too little or too much oil - Inspect oil level.
Poor quality oil - Change oil.
Check internal bearing clearance.
Idle speed problems - Adjust carburetor for slower idle speed.

Engine does not idle

Poor spark plug contact - Tighten the spark plug correctly.
Spark plug worn out - Inspect the spark, replace if necessary.

Engine knocks

Stale fuel - Use proper gasoline.
Engine overload - Reduce the load.
Lack of engine oil - Add to required level.
Engine speed too low - Adjust the speed.
Cylinder bore or piston rings are damaged - Inspect and replace if required.
Check for engine overheating from plugged cooling fins.
Check and adjust valve clearance.
Check for carbon build-up in combustion chamber.

Engine backfires

Inspect spark plug and change if required.
Adjust or replace choke.
Check and adjust carburetor.
Inspect and adjust ignition coil air gap.
Check inlet and outlet valves.
Checking and adjusting valve clearance.
Checking flywheel key.

Engine loses power

Engine temperature too high - Replace air cleaner.
Too much oil in engine - Drain excess oil.
Faulty fuel pump - Repair or replace fuel pump.
Governor not work - Inspect and repair governor.
Check and overhaul carburetor.
Check engine compression.

Excessive fuel consumption

Insufficient throttle opening - Replace throttle cable.
Incorrect carburetor adjustment - Check carburetor float adjustment.

Exhaust with black smoke

Air filter is dirty or oil soaked - Inspect and clean.
Throttle is partially engaged - Check and repair throttle.
Inspect carburetor needle valve and seat for wear or damage.

John Deere X300 Electrical Troubleshooting

Starter doesn't work or will not turn engine

Fuse is defective - Installing new fuse.
Terminals are severely corroded and heat up - Inspect and clean terminals.
Low-voltage battery - Charge the battery.
Ignition switch problems - Change the lock.
Starter is not working - Replace or repair.
Wiring disconnected - Replace electric wires.

Battery will not charge

One or more battery cells dead - Replace the battery.
Battery cables and terminals are dirty - Clean or change cable.

No Lights work

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

JD X300 Machine Troubleshooting

Tractor vibrates excessively

Attachment driven belt worn or damaged - Inspect and replace damaged belt.
Traction drive belt damage - Fit new belt.
Drive pulley is dirty - Installing a new pulley.
Mower blades malfunction - Change damaged blades.

Machine does not move while engine is running

Parking brake holds the tractor - Unlock park brake.
Bypass valve lever is engaged - Deactivate the bypass valve.
Blade becomes loose - Inspect and fasten securely if necessary.
Blades are unbalanced - Check mower blade balancing.
Lack of oil in transmission - Add transmission oil.

John Deere X300 Mower Deck Problems

Clogged discharge chute

Lawn mower is driving too fast - Use slower speed.
Grass Too Tall - try operating a short cutting height.
Wet grass - Don't mow while wet grass.
Engine speed reduced - Adjust throttle to full opening.
Airflow restriction - Check engine rpm.
Lack of cutting height - Choose the correct cutting height.
Belt installed incorrectly - install belt as required.

Streaking of uncut grass

Debris in mower deck - Deck cleaning required.
Damaged blade - Check and replace the blade.
Deck too low - Level mower deck.
Bagger too full - Empty bagger.
Speed is very high - Use slower speed.

Belt Slipping

Dirt in the sheaves - Clean or replace.
Drive belt damage - Fit new belt.
Low belt tension - Adjust belt tension.

Too much mower vibration

Debris in mower deck or in pulleys - Clean deck and pulley from debris.
Damaged pulleys or belt - Change defective parts.
Belt or pulleys out of centering - Inspect and adjust.
Improper blade balancing - Adjust blade balance.

Blades scalp grass

Cutting height improper - Set the proper cutting height.
Mower wheels not adjusted correctly - Adjust mower deck wheels.
Low tire pressure - Increase tire pressure.
Higher blade speed - Balance mower speed.
Blades are bent - Install new blades.

Uneven Cut

Mower deck not leveled properly - Leveling the mower deck.
Tire pressure uneven - Check and inflate the tires.
Incorrect rollers height - Check rollers adjustment.
Gear too high - Need to reduce speed.
Mower blade bent or worn - 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