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John Deere LX279 Lawn Tractor Problems

John Deere LX279 Engine Troubleshooting

Kawasaki engine not starting

No fuel in fuel tank - Fill it up.
Improper fuel grade - Use quality gasoline.
Stale gas - Drain gasoline and fill fresh up.
Dirt and debris in fuel system - Remove debris and dirt.
Spark plug defective - Inspect and replace if required.
Spark plug damaged - Change as required.
Plugged fuel filter - Fit new filter.
Defective safety switch - Replace if required.
Carburetor is clogged - Clean the carburetor.
Test fuel transfer pump output. Check and adjust valve clearance.

Engine starts hard

Spark plug fail - Test spark and replace as required.
Carburetor components worn out - Repair or replace parts.
Clogged fuel pipes - Service required.
Throttle cable damaged - Change the cable.
Stale or incorrect gasoline - Drain and add quality fuel.
Electrical wiring worn out - Inspect and change wires if required.
Failing starter - Test starter and repair if necessary.

Engine runs unevenly

Clogged cooling fins - Remove dirt from cooling fins.
Electrical connections damaged - Inspect and restore defective contacts.
Ignition system problems - Check ignition system and adjust as required.
Choke cable sticking - Check and repair.
Air filter dirty - Replace air cleaner.

Engine misses

Spark plug malfunction - Check spark plug for fouled condition and proper gap.
Carburetor malfunction - Inspect and overhaul.
Ignition coil is damaged - Inspect ignition coil and change if required.

Kawasaki engine overheats

Engine runs under excessive load - Reduce loads.
Air intake screen clogged - Clean clogged components.
Engine oil high or too low - Inspect oil pump for damage or worn.
Incorrect engine oil viscosity - Change oil.
Check connecting rod to crankshaft bearing clearance.
Too Fast idle - Adjust fast idle.

Engine does not idle

Spark plug is loose - Check tightness of spark plug.
Spark plug malfunction - Test spark and change as required.

Engine knocks

Stale gasoline - Change fuel.
Engine overloaded - Reduce loads.
Lack of engine oil - add oil as required.
Low engine speed - Adjust the speed.
Piston rings and cylinder bore worn - Inspect cylinder bore or rings for worn.
Check for engine overheating from plugged cooling fins.
Check and adjust crankshaft end play.
Checking for wear crankshaft or camshaft bearings.

Kawasaki engine backfires

Check spark plug and replace if necessary.
Adjust or replace choke.
Adjust carburetor idle mixture screw.
Checking and adjusting ignition coil air gap.
Inspect for sticking valves.
Inspect and set valve clearance.
Inspect flywheel key.

Insufficient engine power

Engine overheating - Change air filter.
Engine oil overfilled - Remove excess oil.
Faulty fuel pump - Repair or replace fuel pump.
Governor is damage - Repair or replace governor.
Inspect and repair carburetor.
Checking engine compression.

Engine gets too much gas

Insufficient throttle opening - Adjust throttle cable.
Carburetor problems - Check and adjust carburetor.

Emits black smoke

Air filter element plugged - Clean or replace filter.
Choke not fully engaged - Replace or repair choke.
Check and adjust carburetor float level.

John Deere LX279 Electrical System Troubleshooting

Starter does not run

Blown main fuse - Check and change.
Poor terminal connection - Inspect and clean contacts.
Battery not charged - Battery charging required.
Ignition switch defective - Replace the lock.
Starter is damaged - Install new starter.
Wiring disconnected - Replace electric wires.

Battery doesn't charge

Battery cells defective - Install new battery.
Bad contact between battery pole and cable - Change or clean cable.

Lights do not work

Connection/disconnection level in wrong position.
lamp does not work.
Wiring short circuit.

John Deere LX279 Machine Troubleshooting

Excessive tractor vibration

Implements drive belts damaged or worn - Inspect and replace damaged belt.
Traction drive belt damage - Install new belt.
Drive sheaves malfunction - Fit new pulley.
Mower blades malfunction - Replace defective blades.

Tractor doesn't move when engine runs

parking brake blocks the tractor - Release the parking brake.
Bypass valve lever activated - Set bypass valve to the off position.
Mower blade could be loose - Inspect and fasten securely if necessary.
Improper blade balance - Check blade balancing.
Transmission oil is insufficient - Check transmission oil lever.

John Deere LX279 Lawn Mower Problems

Plugged discharge chute

Speed too high - Operate the mower at low speed.
High grass - Adjust the mower to a lower cutting height.
The grass is wet - Wait until the grass dries.
Engine rpm too low - Increase engine speed.
Lack of air flow - Set higher revs.
Mower cuts too low - Change cutting height.
Belt installed incorrectly - Fit belt correctly.

Uncut grass during operation

Cutting deck clogging - Inspect and clean cutting deck.
Excessive blade wear - Check for blade damage and replace if necessary.
Mower deck is low from ground - Adjust and level the deck height.
Grass bagger overfilled - Empty the grass bag.
Speed too high - Need to reduce speed.

Slipping drive belt

Pulley is dirty - Pulley cleaning required.
Drive belt damage - Install new belt.
Low belt tension - Belt tension needs to be adjusted.

Mower vibrates

Debris in sheaves or on mower deck - Clean mower deck and sheave from debris.
Worn sheaves or belt - Replace defective components.
Misaligned belt or pulley - Check and centering.
Incorrect blade balancing - Balance the blades.

Blades scalp grass

Cutting too low - Check and adjust height.
Mower wheel height incorrect - Adjust mower deck wheels.
Insufficient tire pressure - Tire pressure required.
High blade speed during mowing - Adjust the blade speed.
Bent blades during operation - Replace blades.

Uneven cutting results

Deck too low - Level mower deck.
Low tire pressure - Need to inflate tires.
Wrong wheel position - Check rollers adjustment.
Gear too fast - Use slower speed.
Mower blades blunt - Checking for blade fault and change if required.

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