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Kubota T1400 Troubleshooting
The
Kubota T1400 is a lawn tractor from T-series. This model was manufactured
between 1987 and 1996. The components of Kubota T1400 powerline system: Kubota
GH400 4-cycle single cylinder air-cooled OVH gasoline engine and belt-driven
hydrostatic transmission with infinite forward and reverse gears.
A 23.81 cubic inches (0.39 L) engine has a power rating of 13.5 hp (10.1
kW) and maximum torque of 25.5 Nm (18.9 lb-ft) at 2500 rpm. The maximum
travel speed (forward/reverse): 5.6 mph (9 km/h) and 2.6 mph (4.2 km/h).
The tractor is fitted with 14x5.00-6 front tires and 18x8.50-8 rear
tires.
The wheelbase is 46.9 in (1190 mm). The Kubota T1400 can be equipped
with the following attachments: a 40" mid-mount 2-blade Kubota RC40LT
mower deck with cutting height of 1.0-4.0 in (25-101), 42" front-mount
Kubota T2541 snowblower, and 44" front-mount Kubota T2083 blade.
| Engine Troubleshooting |
| Engine won't start or starts hard |
| No fuel in fuel tank - Add gasoline |
| Improper fuel grade - Use correct fuel grade |
| Air in the fuel lines - Bleed the fuel lines |
| Spark plug wire is loose or disconnected - Check the spark plug wire connection, repair or replace |
| Spark plug is damaged - Spark plug need to be replaced |
| Plugged fuel filter - Fuel filter needs changing |
| Brake pedal not pushed down - Push the brake pedal down |
| Carburetor is not adjusted - Check carburetor float adjustment |
| Poor compression - Inspect and replace wear parts |
| Not adjusted or damaged throttle cable - Adjust correctly or change the cable |
| Cooling fins are clogged - Wash or clean as required |
| Ignition system problems - Test ignition and replace failed parts |
| Throttle cable is stuck or faulty - Clean or change the cable |
| Clogged air filter - Service or replace air filter |
| Fuel pump is damaged or dirty - Check fuel pump and change if required |
| Engine starts but then stops |
| Spark plug is damaged - Spark plug need to be replaced |
| Defective or dirty carburetor - Clean or change carburetor |
| Ignition coil is faulty - Ignition coil must be replaced |
| Bad or broken valve springs - New valve springs need to be installed |
| Valves sticking - Valves must be cleaned |
| Not enough engine oil - Need to add engine oil |
| Excessive engine load - Reduce engine load |
| Air intake screen is plugged - Need to wash or clean |
| Carburetor mixture is too lean - Set the carburetor properly |
| Bad ignition timing - Ignition timing needs to be adjusted correctly |
| Wrong valve setting - Valves needs to be adjusted properly |
| Stale fuel - Use correct gasoline |
| Engine is running overloaded - Load reducing is recommended |
| Lack of engine oil - Fill up the oil to required level |
| Low idle speed setting is not correct - Correct idle settings |
| Fuel pump is faulty or clogged - Clean or replace fuel pump |
| Worn main bearings or crankshaft - Repair or replace defective parts |
| Excessive valve clearance - Adjust valve clearance according to specifications |
| Piston rings or cylinder bore are worn - Replace defective components |
| Engine power is insufficient |
| Dirty or incorrectly adjusted carburetor - Service or correctly adjust carburetor |
| Dirty air filter element - Replace or service air filter |
| Fuel pump is defective or dirty - Clean or install new fuel pump |
| Ignition failure - Inspect ignition system and change faulty parts |
| Damaged cylinder-head gasket - Cylinder-head gasket replacement required |
| Burned or stuck valves - Clean or replace valves |
| Worn or damaged push rod - Replace push rod |
| Worn cylinder block components - Change defective components |
| Engine using too much gasoline |
| Throttle does not open well - Inspect throttle cable and adjust it |
| Incorrect adjustment of carburetor main jet - Adjust it correctly |
| Defective or loose spark plug - Re-tighten or change the spark plug |
| Valves are worn, burned or stuck - Change or clean valves |
| Rings, sleeve, or piston are damaged - Replace faulty components as required |
| Incorrect valve clearance - Adjust valve clearance according to specifications |
| Excessive oil consumption |
| Damaged gaskets or seals - Replace worn parts to avoid leaks |
| Damaged valve guides or valve stems - Change the valves |
| Worn or stuck piston rings - Change the piston rings as required |
| Damaged cylinder liner or piston - Check liner and piston, replace as required |
| Clogged breather pipe or hose - Replace or clean |
| Hydrostatic Transmission Troubleshooting |
| Hydrostatic transmission is excessively noisy |
| Worn or out of adjustment speed control linkage - Adjust or repair linkage |
| Transmission overloaded - Reduce loading |
| Contaminated transmission fluid or low fluid level - Fill to required level or change the fluid |
| Damaged or worn components of transmission - After disassembly and inspection, replace defective components |
| Loose or broken shift linkage - Change defective linkage |
| Worn or seized hydrostatic pump - Repair or change pump |
| Misadjusted or faulty transmission shift control components - Change or adjust correctly |
| Lack of transmission oil supply - Need to add transmission oil |
| Drive pulley is worn or faulty - Change pulley |
| Broken or not adjusted shift linkage - Replace or adjust linkage |
| Speed control pedal linkage is damaged or out of adjustment - Adjust or install new linkage |
| Damaged transmission seals or gaskets - Change gaskets or seals |
| Final drive shaft leakage - Replace shaft seals |
| Transmission housing is cracked - Install a new transmission housing |
| Mower Deck Troubleshooting |
| Mower vibrates excessively |
| Clogged or damaged mower drive sheave - Clean or replace sheave |
| Drive belt is loose or defective - Adjust belt tension or change the belt |
| Unbalanced or warped mower blades - Balance or change as needed |
| Loose blade mounting bolts - Bolts should be tightened |
| Discharge chute is constantly plugged |
| Ground speed is too fast - Operate at slower speed |
| Grass is too high - Adjust mower to lower cutting height |
| Engine is running at too low speed - Choke is not fully opening |
| Mower deck set to low cutting - Must be set to high cutting height |
| Incorrect mower drive belt installation - Install drive belt as required |
| Lawn mower leaving uncut grass |
| Cutting deck clogging - Clean mower deck as required |
| Blades are excessively dull - Blades need to be sharpened |
| Defective or worn blades - Change the blades |
| Fast mowing speed - Use a lower speed |
| Cutting level is too low - Use correct cutting height |
| Grass bag is overfilled - Clean grass bag |
| Lawn is bumpy or not smooth - Lawn needs to be leveled |
| Cutting level is too low - Adjust mower to higher cutting height |
| Fast mowing speed - Need to slow down |
| Mower deck is not leveled properly - Deck should be adjusted correctly |
| Blades are bent or worn - Blades must be changed |
| Tires are not correctly inflated - Inflate tires correctly |
| Tires are not correctly inflated - Check and inflate the tires |
| Deck level is not correct - Level the deck correctly |
| Blades are too dull - Need to sharpen the blades |
| Damaged or worn blades - Replace the blades |
| Cutting deck is clogged - Inspect and clean cutting deck |
| Damaged mower deck shell - Replace or rebuild mower deck |
| Loose or faulty mower spindle - Change or repair the spindle |
| Electrical Troubleshooting |
| Battery does not charge |
| Electrical cable connections are corroded or loose - Service or tighten cable connections |
| Battery terminal clamps are faulty - Install new terminal clamps |
| Battery is defective - Battery change required |
| Battery power is low - Battery needs to be recharged |
| Battery is draining quickly - Battery needs to be serviced or replaced |
| Disconnected cables or faulty battery terminals - Connect wiring correctly or install new terminals |
| Battery is discharged or defective - Replace or charge as required |
| Battery wires are disconnected or incorrectly connected - Check wires and connect correctly |
| Low battery output voltage - Battery is drained, recharge it |
| Spark plug faulty or incorrectly gapped - Replace or clean and gap |
| Solenoid or starter motor is faulty - Repair starter or install a new solenoid |
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| Lawn and Garden Tractors Technical Specs |
