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John Deere 260 Tractor Troubleshooting

Gasoline Engine Troubleshooting

John Deere 260 engine starting problems

Empty fuel tank - Fill gasoline up.
Wrong fuel grade - Use quality fuel.
Stale gas - Drain gasoline and fill fresh up.
Dirty fuel lines - Inspect and clean.
Defective spark plug wires - Replace if necessary.
Spark plug damaged - Installing new spark plug.
Plugged fuel filter - Install new filter.
Brake pedal not pushed down - Push the brake pedal down.
Carburetor problems - Carburetor diagnostics required.
Check starter cranking RPM. Check the Valves and Compression System.

Gas engine starts hard

Spark plug fail - Inspect the spark, replace if necessary.
Problems with carburetor adjustment - Adjust as required.
Fuel lines are clogged - Remove clogging from fuel pipes.
Throttle cable damaged - Change the cable.
Stale or incorrect fuel - Fill in correct fuel.
Electrical connection problems - Inspect and change.
Failing starter - Check the starter and replace defective components.

Engine stalling, surging or running rough

Plugged cooling fins - Clean and wash cooling fins.
Electrical connections damaged - Check and replace damaged connections.
Ignition setting defective - Check spark plug and ignition.
Throttle cable sticks - Check and replace.
Air cleaner blocked - Clean or replace the air filter.

JD 260 Engine stops or misses

Faulty spark plug - Test spark plug.
Carburetor malfunction - Inspect and overhaul.
Ignition coil air gap incorrect - Check and adjust ignition coil air gap.

Engine overheating

Engine overloaded - Reduce the load.
Air intake screen plugged - Clean dirty components.
Too much or too little oil - Inspect oil level.
Incorrect engine oil viscosity - Change engine oil.
Check internal bearing clearance.
Too Fast idle - Adjust fast idle.

Engine does not idle

Spark plug not gapped correctly - Adjust spark plug gap.
Spark plug failed - Test spark and replace as required.

Engine knocks

Stale or low octane fuel - Change gasoline.
Engine overloaded - Reduce loads.
Lack of engine oil - Check oil level and add if necessary.
Engine speed too low - Adjust the required speed.
Cylinder bore and rings worn out - Replace defective components.
Inspect for engine overheats from clogged cooling fins.
Checking and adjusting valve clearance.
Inspect for loose or wear connecting rods.

John Deere 260 Engine back-fire

Checking spark plug.
Adjust or change the throttle.
Check and adjust carburetor.
Check and adjust ignition coil air gap.
Check for sticking valves.
Test valve clearance, adjusting if necessary.
Checking flywheel key.

Engine lacks power

Engine overheats - Change air filter.
Excess engine oil - Excess oil needs to be drained.
Fuel pump is damage - Testing fuel pump output.
Governor not work - Inspect and adjust governor.
Check carburetor float adjustment.
Checking engine compression.

Engine using too much gasoline

Throttle did not open fully - Check throttle cable.
Carburetor malfunction - Checking and adjusting carburetor.

Black smoke is emitted during operation

Air filter element plugged - Clean or replace filter.
Choke partially engaged - Inspecting and adjusting throttle.
Checking and adjusting carburetor float level.

JD 260 Electrical System Troubleshooting

Starter does not run

Main fuse malfunction - Check and replace.
Poor terminal connection - Clean connections.
Low battery voltage - Need to charge the battery.
Ignition switch is damaged - Installing new lock.
Starter is damaged - Replace or repair.
Wires disconnected - Connect wires.

Battery doesn't charge

Faulty cell in battery - Install new battery.
No contact between cable and battery terminal - Check and Clean.

Lighting does not function

Light connector defective.
Replace light bulbs.
Short circuit in electrical wires.

John Deere 260 Mechanical Troubleshooting

Tractor vibrates excessively

Attachment driven belt worn or damaged - Check and replace worn belt.
Worn traction drive belt - Inspect and replace traction belt.
Drive sheaves are dirty - Clean the sheaves.
Blades bent or out of balance - Change defective blades.

Tractor will not move with engine running

parking brake blocks the tractor - Unlock park brake.
Bypass valve pulled out - Deactivate the bypass valve.
Mower blade could be loose - Inspect and fasten securely if necessary.
Blades are unbalanced - Balance the mower blades correctly.
Transmission oil is low - Add transmission oil.

JD 260 Lawn Mower Problems

Discharge Chute Plugged

Traveling too fast - Need to reduce speed.
Too high grass for mowing - Adjusting cutting height.
Grass too wet - Don't mow while wet grass.
Engine runs at low revs - Increase engine speed.
Loss of airflow - Set higher revs.
Cutting too low - Choose the correct cutting height.
Incorrect belt installation - Fit belt correctly.

Lawn mower leaving uncut grass

Mower deck clogged - Inspect and clean cutting deck.
Excessive blade wear - Install new blade.
Deck level is too low - Checking and adjust deck height.
Grass bag overfilled - Empty bagger.
Speed is very fast - Operate the mower at low speed.

Belt Slipping

Dirt in the sheaves - Recommend cleaning the sheaves.
Worn belt - Install new belt.
Belt tension improper - Correct belt tension.

John Deere 260 Mower vibrates

Mower clogged or in pulleys - Remove clogging from mower deck or sheaves.
Damaged sheaves or belt - Replace worn components.
Belt or sheaves no adjustment - Check and align.
Improper blade balancing - Balance blades correctly.

Blades scalping grass

Cutting height too low - adjust cutting height.
Mower rollers height wrong - Adjust rear or front wheel height.
Tire pressure is uneven - Tire pressure required.
Blades speed too fast - Balance mower speed.
Blades are bent - Remove bent blade and fit new one.

Uneven Cut

Mower deck not leveled properly - Checking and adjust deck height.
Low tire inflation - Tire pressure required.
Incorrect wheel height - Check rollers adjustment.
Operating at a faster ground speed - Choose recommended speed.
Mower blade worn or bent - 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