Home / Lawn and Garden Tractors / Craftsman Lawn Tractors / Craftsman T1400

Craftsman T1400 Troubleshooting

The Craftsman T1400 is a 2-wheel drive lawn tractor from T1000 series. This model was manufactured by MTD built between 2014 to 2020. The Craftsman T1400 powerline components: a Briggs and Stratton 4-cycle single cylinder OHV vertical shaft air-cooled gasoline engine and MTD AutoDrive belt-driven variator transmission with infinite forward and reverse gears.

A 30.5 cubic inches (500 cc) engine has a cylinder bore of 3.56" (91 mm), a piston stroke of 3.06" (78 mm), and rated power of 17.5 hp (13 kW). The maximum forward speed - 5.5 mph (8.8 kph), max. reverse speed - 2.3 mph (3.7 kph).

The Craftsman T1400 lawn tractor is equipped with a manual steering system, mechanical disc brakes, 15x6.00-6 front tires, and 20x8.00-8 rear tires. The wheelbase is 31 in (780 mm). The tractor is compatible with a 42" mid-mount 2-blade mower deck with a cutting height of 1.5-4.0" (37-100 mm) and manual lift system.

Engine Troubleshooting
Engine hard to start or will not start
Empty gas tank - Fill fuel up
Improper fuel grade - Use correct gasoline grade
Clogged fuel system - Remove clogging
Damaged spark plug wiring connection - Check spark plug wiring connection, repair or change
Defective spark plug - Replace spark plug
Fuel filter is clogged - Change fuel filter
Brake pedal not pushed down - Push the brake pedal down
Carburetor incorrectly set - Set carb correctly
Engine has low compression - Check cylinder block and replace defective parts
Throttle cable is adjusted improperly or worn - Adjust properly or change the cable
Rough engine running
Air intake screen is blocked - Need to wash or clean
Ignition system problems - Inspect ignition system and change failed components
Stuck or faulty throttle cable - Clean or replace the cable
Plugged air filter - Service or replace air filter
Clogged or defective fuel pump - Test fuel pump and replace if necessary
Engine starts and stops immediately
Spark plug is damaged - Change spark plug
Defective or dirty carburetor - Service or change carburetor
Ignition coil is defective - Ignition coil must be replaced
Worn or loose valve springs - Valve springs need to be changed
Valves are stuck - Clean the valves
Engine overheated
Lack of engine oil - Fill up the oil to required level
Engine overloaded - Load reducing is recommended
Clogged cooling fins - Need to wash or clean
Carburetor mixture is too lean - Make the correct settings
Ignition timing is wrong - Ignition timing needs to be set properly
Valve setting is wrong - Valves needs to be set correctly
Engine knocks or noises
Stale fuel - Use proper fuel
Engine is running overloaded - Reduce load
Lack of engine oil - Fill up the engine oil
Low idle speed set incorrectly - Need to adjust idle speed
Dirty or defective fuel pump - Service or replace fuel pump
Main bearings or crankshaft are worn out - Worn parts replacement required
Incorrect valve clearance - Adjust valve clearance according to specifications
Worn cylinder bore or piston rings - Replace defective components
Engine power is too low
Carburetor is clogged or improperly adjusted - Clean or correctly adjust carburetor
Dirty air filter element - Replace or clean air filter
Dirty or defective fuel pump - Test fuel pump and replace if necessary
Defective ignition - Inspect ignition system and change failed components
Defective cylinder head gasket - Replace the gasket as required
Valves are stuck or burned - Change or service valves
Push rod is worn or damaged - Replace push rod
Damaged cylinder block parts - Change defective parts
Engine using too much gasoline
Throttle does not open well - Inspect throttle cable and adjust it
Incorrect carburetor main jet adjustment - Adjust it properly
Spark plug is defective or loose - Tighten or replace spark plug
Worn, stuck, or burned valves - Change or clean valves
Piston, sleeve, or rings are damaged - Change faulty parts
Excessive valve clearance - Adjust valve clearance
Excessive engine oil consumption
Worn gaskets or seals - Change worn parts according to specifications
Damaged valve guides or valve stems - Replace the valves
Piston rings are stuck or broken - Install new piston rings
Damaged cylinder liner or piston - Check liner and piston, install new components as required
Clogged breather hose or pipe - Replace or service

Transmission Troubleshooting
Hard shifts
Loose or broken gear shift linkage - Change defective shift linkage
Worn or bent shift forks - Shift forks need to be changed
Gearshift mechanism is damaged - Replace or repair the mechanism
Transmission makes excessive noise
Lack of transmission fluid supply - Add fluid as required
Oil contamination - Change transmission oil
Gears or bearings are worn - Replace defective parts
Transmission jumping out of gear
Incorrectly installed or bent shift lever - Reinstall the lever properly or change it
Gears are damaged or worn - Replace defective gears
Shift forks or shift rods are faulty - Change damaged forks or rods
Transmission slips
Drive shaft/belt is improperly adjusted or damaged - Replace belt/shaft or adjust it
Defective brake/clutch or incorrect brake/clutch adjustment - Replace brake/clutch or adjust it
Faulty or worn drive sheave - Install a new sheave

Hydrostatic Transmission Troubleshooting
Excessive HST transmission noise
Speed control pedal linkage is damaged or out of adjustment - Replace or adjust linkage
Transmission overloaded - Reduce the load is required
Contaminated transmission fluid or low fluid level - Top up to proper level or change transmission fluid
Defective or worn transmission parts - Check hydrostatic transmission components for defect or damage and change if necessary
Difficult to shift
Loose or broken shift linkage - Change defective linkage
Hydrostatic pump is worn or stuck - Repair or replace pump
Misadjusted or faulty transmission shift control components - Adjust properly or change
Low power
Transmission oil insufficient - Fill the transmission housing to proper oil level
Worn or damaged drive sheave - Replace sheave
Shifter linkage is not adjusted or faulty - Adjust properly or replace linkage
Speed control pedal linkage is bent or not adjusted - Change or adjust linkage
Transmission leakage
Transmission gaskets or seals are worn - Change gaskets or seals
Final drive shaft is leaking - Install new shaft seals
Transmission case is cracked - Install a new transmission case

Mower Deck Troubleshooting
Mower vibrates excessively
Damaged or clogged mower drive pulley - Service or change pulley
Drive belt is defective or loose - Adjust belt tension or replace belt
Mower blades are not balanced or warped - Balance blades or replace it
Blade bolts are not tightened well - Bolts need to be tightened
Discharge chute keeps clogging
Fast ground speed - Operate at slower speed
Grass is too high - Need to set low cutting height
Reduced engine speeds - Adjust carburetor to higher rpm
Cutting height is too low - Use correct cutting height
Incorrect mower drive belt installation - Install drive belt correctly
Streaking of uncut grass
Deck is plugged with grass - Mower deck needs to be cleaned
Blades are excessively dull - Blades need to be sharpened
Defective or worn blades - Replace the blades
Mowing speed is too high - Select a lower speed
Mower cuts too low - Adjust mower to higher cutting height
Full bagger - Bagger must be empty
Blade scalped grass
Lawn is not level or bumpy - Lawn leveling required
Low cutting height - Raise the cutting height
Ground speed is too fast - Use a slower speed
Improperly leveled mower deck - Deck needs to be adjusted properly
Bent or worn blades - Install new blades
Low tire inflation - Correct tire pressure
Uneven cutting
Tires are not properly inflated - Check and inflate the tires
Incorrect level of mower deck - Deck should be adjusted correctly
Blades are excessively dull - Need to sharpen the blades
Blades are defective or worn - Blades need to be replaced
Cutting deck clogging - Mower deck needs to be cleaned
Damaged mower deck shell - Repair or change the deck
Mower spindle is loose or defective - Install new spindle or repair it

Electrical Troubleshooting
Battery won’t charge
Electrical cable connections are corroded or loose - Clean or tighten connections
Defective battery terminal connectors - Change terminal connectors
Battery is defective - Use a new battery
Starter motor cranks slow
Low battery capacity - Recharge the battery
Battery runs out quickly - Service battery or change it
Corroded battery terminals or disconnected wires - Connect cables properly or replace terminals
Starter is not cranking
Battery is discharged or defective - Recharge or change battery
Battery wiring is disconnected or improperly connected - Inspect wiring and connect as required
Battery power is low - Battery is drained, recharge it
Spark plug faulty or incorrectly gapped - Clean and gap or replace
Solenoid or starter motor failure - Repair starter or install a new solenoid



Lawn and Garden Tractors Technical Specs