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Kubota T1560 Troubleshooting

The Kubota T1560 is a 2WD (4x2) lawn tractor. This model was manufactured from 1997 to 2001. The Kubota T1560 driveline components: Kawasaki FC420V 4-stroke 1-cylinder vertical OHV forced air-cooled gasoline engine and belt-driven hydrostatic transmission with cruise control.

A 25.8 cu.in (423 cc) engine has a cylinder bore of 3.5" (89 mm), piston stroke of 2.68" (68 mm), and rated power of 14 hp (10.4 kW). The maximum forward speed - 5.6 mph (9 km/h), maximum reverse speed - 2.5 mph (4 km/h). The Kubota T1560 is equipped with 15x6.00-6 front tyres and 18x8.50-8 or 20x10.00-8 rear tyres.

The wheel base is 47" (1200 mm). Compatible attachments for the tractor: a 40" mid-mount 2-blade Kubota RCK40LT mower deck, 40" mid-mount 3-blade Kubota RCK44LT mower deck with cutting height of 1.0-4.0 in (25-101), 38" front-mount Kubota T2738 snowblower, and 46" front-mount Kubota T2083 blade.

Engine Troubleshooting
Engine doesn't start or difficult to start
No gasoline in tank - Fill fuel up
Improper fuel grade - Use correct fuel grade
Dirty fuel system - Check and clean
Spark plug wiring connection is defective - Check the spark plug wire connection, repair or replace
Damaged spark plug - Change spark plug
Fuel filter is plugged - Change fuel filter
Defective safety switch - Replace if required
Carburetor malfunction - Check and repair as required
Poor compression - Inspect and replace wear parts
Incorrectly adjusted or damaged throttle cable - Change cable or adjust properly
Engine runs irregularly
Clogged cooling fins - Clean and wash as required
Ignition system failure - Inspect ignition system and change failed components
Throttle cable is faulty or stuck - Clean or change the cable
Air filter element is clogged - Service or replace air filter
Dirty or damaged fuel pump - Check fuel pump and replace if necessary
Engine stops after starting
Defective spark plug - Replace spark plug
Carburetor is dirty or defective - Service or replace carburetor
Ignition coil is defective - Ignition coil must be replaced
Broken or loose valve springs - Change valve springs
Valves are stuck - Valves must be cleaned
Engine keeps overheating
Engine oil level is insufficient - Check and refill engine oil
Excessive engine load - Load reducing required
Plugged cooling fins - Need to clean or wash
Carburetor fuel mixture is too lean - Set the carburetor correctly
Wrong ignition timing - Set the ignition timing properly
Improper valve setting - Adjust valves correctly
Abnormal engine knocking or noise
Stale gasoline - Change gasoline
Engine is running overloaded - Reduce load
Engine oil level is insufficient - Need to add engine oil
Too low idle RPM - Adjust idling as required
Fuel pump is faulty or clogged - Service or change fuel pump
Crankshaft or main bearings failure - Replace crankshaft or bearings
Valve clearance is wrong - Need to adjust valve clearance
Worn piston rings or cylinder bore - Replace defective parts
Lack of engine power
Clogged or improperly adjusted carburetor - Service or correctly adjust carburetor
Dirty air filter element - Replace or service air filter
Clogged or defective fuel pump - Inspect fuel pump and change as required
Ignition system malfunction - Check ignition and replace faulty components
Cylinder head gasket is worn - Change cylinder head gasket
Valves are stuck or burned - Replace or service valves
Push rod is worn or bent - Push rod needs to be changed
Faulty cylinder block components - Replace defective parts
High fuel consumption
Choke is not fully open - Check choke cable and adjust it
Incorrect adjustment of carburetor main jet - Adjust it properly
Loose or defective spark plug - Spark plug need to be tightened or replaced
Burned, worn, or stuck valves - Change or service valves
Sleeve, rings, or piston are damaged - Replace faulty components
Valve clearance is wrong - Adjust to proper valve clearance
High oil consumption
Gaskets or seals are excessively worn - Replace worn parts to avoid leaks
Valve guides or stems are damaged - Change the valves
Stuck or worn piston rings - Install new piston rings
Scuffed cylinder liner or piston - Inspect piston and liner, change as required
Breather pipe or hose is blocked - Service or replace

Hydrostatic Transmission Troubleshooting
Excessive HST transmission noise
Defective or not adjusted speed control pedal linkage - Change or adjust linkage
Transmission overload - Load needs to be reduced
Insufficient oil level or contaminated oil - Fill to required level or change the transmission oil
Transmission parts are worm or defective - Change or repair defective parts
Difficult to shift
Shift linkage is stuck or damaged - Clean or change linkage
Faulty or blocked hydrostatic pump - Replace or repair pump
Transmission shift control parts are faulty or unadjusted - Adjust correctly or replace
Low power
Lack of transmission fluid - Check and refill the transmission fluid
Drive pulley is worn or faulty - Change pulley
Shifter linkage is faulty or not adjusted - Adjust properly or replace linkage
Worn or out of adjustment speed control linkage - Adjust or install new linkage
Transmission leaking
Transmission gaskets or seals are damaged - Replace seals or gaskets
Final drive shaft leakage - Change shaft seals
Cracked transmission case - Install a new transmission case

Mower Deck Troubleshooting
Excessive mower vibration
Clogged or damaged mower drive sheave - Change or clean sheave
Drive belt is worn or loose - Adjust belt tension or install a new belt
Unbalanced or warped cutting blades - Change or balance blades
Loose blade bolts tightening - Tighten bolts as required
Discharge chute regular clogging
Ground speed is too fast - Operate at slower speed
Tall grass - Need to set low cutting height
Engine runs at low revs - Adjust choke to full opening
Mower cuts too low - Use a higher cutting height
Incorrect mower drive belt installation - Reinstall drive belt properly
Uncut grass when mowing
Deck clogged with grass clippings - Mower deck needs to be cleaned
Blades are not sharp - Sharpen the blades
Blades are defective or worn - Replace the blades
Fast ground speed - Operate at slower speed
Cutting level is too low - Use correct cutting height
Filled grass bag - Clean grass bag
Blade scalped grass
Bumpy or unleveled lawn - Level the lawn
Low cutting height - Change cutting height adjustment
Ground speed is too fast - Use a slower speed
Improper mower deck level - Level the deck properly
Bent or worn blades - Blades must be changed
Incorrect tire pressure - Inflate tires as required
Uneven cut
Tires are not correctly inflated - Correct tire pressure
Incorrectly leveled mower deck - Deck needs to be adjusted properly
Blades are not sharp - Sharpen the blades
Blades are defective or worn - Install new blades
Discharge chute is plugged - Clean out the mower deck
Broken mower deck shell - Repair or replace the deck
Mower spindle is faulty or loose - Spindle needs to be repaired or replaced

Electrical Troubleshooting
Battery will not charge
Corroded or loose cable connections - Service or tighten connections
Defective battery terminal clamps - Terminal clamps should be changed
Faulty cell in battery - Change the battery
Starter turns slow
Battery power is low - Battery needs to be recharged
Battery is draining quickly - Battery needs service or replacement
Disconnected wires or corroded battery terminals - Check battery wires and service or replace terminals
Starter will not crank
Battery is drained or defective - Replace or charge as required
Battery cables are disconnected or incorrectly connected - Check cables and connect as needed
Battery capacity is low - Battery is drained, charge it
Spark plug dirty or improperly gapped - Clean, gap or replace spark plug
Starter motor or solenoid failing - Repair starter or replace solenoid



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