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John Deere X394 Lawn Tractor Troubleshooting

John Deere X394 Engine Problems

Kawasaki engine fails to start

No fuel in fuel tank - Add gasoline.
Wrong grade of gasoline - Use quality gasoline.
Old gasoline - Drain fuel and fill up fresh.
Fuel system clogged - Repair or replace.
Spark plug defective - Inspect and change if necessary.
Spark plug damaged - Test ignition spark.
Plugged fuel filter - Replace fuel filter.
Brake pedal not depressed - Press the brake pedal.
Incorrect carburetor adjustment - Adjust carburetor idle mixture screw.
Check starter cranking RPM. Test compression.

Gas engine is difficult to start

Spark plug malfunction - Inspect the spark, change if necessary.
Carburetor not adjusted - Adjust according to instructions.
Clogged fuel lines - Servicing fuel system.
Worn throttle cable - Replace as required.
Old or improper fuel - Fill in proper gasoline.
Electrical wiring worn out - Inspect and change.
Starter fault - Test starter and repair if necessary.

Rough running engine

Cooling fins blocked - Clean cooling fins.
Loose electrical contacts - Check and replace damaged connections.
Ignition adjust incorrect - Check ignition and adjust if necessary.
Throttle cable sticking - Check and replace.
Air cleaner element plugged - Change air cleaner.

Engine misses under load

Spark plug failed - Check spark plug wire for wet or deteriorated condition.
Carburetor problems - Test and repair.
Ignition coil not working - Replace defective component.

Kawasaki engine overheats

Engine overloaded - Reduce loads.
Air intake screen plugged - Clean and wash dirty components.
Too much or too little oil - Add or drain oil.
Low quality engine oil - Change engine oil.
Check internal bearing clearance.
Fast idle speed - Adjust fast idle.

Engine does not idle

Spark plug is loose - Check tightness of spark plug.
Spark plug wear - Inspect the spark, change if necessary.

Engine knocks

Stale gasoline - Change fuel.
Engine overload - Reduce the load.
Lack of engine oil - Add engine oil.
Low engine speed - Adjust the speed.
Cylinder bore and rings worn out - Inspect cylinder bore or rings for worn.
Inspect for engine overheats from clogged cooling fins.
Check and adjust valve clearance.
Checking for wear crankshaft or camshaft bearings.

Kawasaki engine backfires

Check spark plug and replace if necessary.
Check and adjust the choke.
Test carburetor, adjust if necessary.
Check and adjust ignition coil air gap.
Check inlet and outlet valves.
Check and adjust valve clearance.
Inspecting flywheel key.

Insufficient engine power

Engine overheating - Replace air cleaner.
Too much oil in engine - Remove excess oil.
Fuel pump broken - Test fuel pump output.
Defective governor - Inspect and repair governor.
Inspect carburetor for plugged passages.
Checking engine compression.

Engine getting too much fuel

Throttle did not open fully - Inspect choke cable.
Incorrect carburetor adjustment - Adjust carburetor.

Black exhaust smoke

Air filter element clogged - Inspect and clean.
Choke partially engaged - Replace or repair choke.
Inspect carburetor needle valve and seat for wear or damage.

John Deere X394 Electrical System Troubleshooting

Starter does not function

Blown fuse - Check and change.
Battery terminals are corroded - Inspect and clean terminals.
Low-voltage battery - Battery charging required.
Ignition switch defective - Change switch.
Starter is not working - Change the starter.
Wiring damage - Replace electric wires.

Battery does not charge

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

No Lights work

Connection/disconnection level in wrong position.
lamp defective.
Inspect electrical wires for short- circuit.

John Deere X394 Machine Troubleshooting

Tractor vibrates too much or rattles excessively

Equipment driven belt worn out - Check and change worn belt.
Traction drive belt worn - Fit new belt.
Drive sheaves are dirty - Fit new pulley.
Cutting blade loose or unbalanced - Change as needed.

Engine runs but tractor won't move

Parking brake is applied - Release the parking brake.
Bypass valve lever is engaged - Disengage the bypass valve lever.
Blade becomes loose - Inspect and fasten securely if necessary.
Improper blade balance - Balance the blades correctly.
Too little transmission oil - Add transmission oil.

John Deere X394 Lawn Mower Problems

Clogged discharge chute

Lawn mower is driving too fast - Use slower speed.
Too high grass for mowing - Use a shorter cutting height.
Wet grass - Don't mow while wet grass.
Engine rpm reduced - Adjusting carburetor for higher rpm.
Restricted air flow - Check engine rpm.
Lack of cutting height - Use higher cutting.
Belt fitted improperly - Reinstall the belt properly.

Uncut grass during operation

Debris in mower deck - Need to clean the mower deck.
Excessive blade wear - Check and replace the blade.
Mower deck is low from ground - Checking and adjust deck height.
Grass bag too full - Clean bagger.
Speed is very high - Need to reduce speed.

Belt Slipping

Debris in pulleys - Pulley cleaning required.
Belt is loose - Install new belt.
Belt tension problems - Adjust belt tension.

Excessive mower vibration

Mower deck clogged or in sheaves - Clean pulley and deck from debris.
Worn sheaves or belt - Change defective components.
Pulley or belt out of alignment - Inspect and centering.
Blades are not balanced correctly - Blade balance required.

Blades scalping grass

Incorrect height cutting - Raise cutting height.
Mower wheel height incorrect - Check wheel adjustment.
Low tire pressure - Need to inflate tires.
High blade speed during mowing - Blade speed required.
Bent blades during operation - Install new blades.

Uneven Cut

Deck level is too low - Leveling the mower deck.
Tire pressure unequal - Check and inflate the tires.
Wrong rollers position - Adjust front or back wheel height.
Speed too high - Need to reduce speed.
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