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Craftsman T2500 Troubleshooting

The Craftsman T2500 lawn tractor was manufactured between 2014 and 2016. The Craftsman T2500 powertrain system components: 32.9 cu.in (540 cc) Briggs and Stratton 33R877 4-cycle vertical-shaft single cylinder air-cooled gasoline engine with a rated power of 19 hp (14.2 kW), and CVT Automatic transmission with infinite forward and reverse gears.

The engine has a float-feed carburetor, integral type fuel pump, full pressure lubrication with full-flow oil filter, and cartridge type air cleaner. Max. travel speed (forward/reverse): 5.5 mph (8.8 km/h) and 2.3 mph (3.7 km/h).

The Craftsman T2500 was equipped with a manual steering system, mechanical disc brakes, 15x6.00-6 front tires, and 20x8.00-8 rear tires. The wheelbase is 48 in (1210 mm). The tractor is compatible with a 46" mid-mount 2-blade mower deck with cutting height of 1.0-4.0 in (25-100 mm), 6 cut positions, and mechanical lifting system.

Engine Troubleshooting
Engine difficult to start or doesn't start
Gas tank is empty - Add fuel
Low-quality gasoline - Change fuel
Air in the fuel system - Air bleeding
Faulty spark plug wire connection - Check the spark plug wire connection, repair or replace
Defective spark plug - Install new spark plug
Fuel filter is dirty - Change fuel filter
Safety contact for brake pedal defective - Install new part
Carburetor is dirty - Wash, clean and adjust
Poor cylinder compression - Check cylinder block and change worn parts
Damaged or not adjusted choke cable - Replace cable or adjust properly
Engine runs roughly
Air intake screen is blocked - Clean and wash as required
Ignition system malfunction - Inspect ignition system and change faulty parts
Stuck or faulty choke cable - Clean or replace the cable
Dirty air filter element - Service or replace air filter
Fuel pump is clogged or faulty - Test fuel pump and replace if necessary
Engine stalls after starting
Spark plug is defective - Change spark plug as required
Carburetor is dirty or defective - Service or repair carburetor
Damaged ignition coil - Change ignition coil as required
Loose or broken valve springs - Valve springs need to be changed
Valves sticking - Service the valves
Engine overheated
Engine oil insufficient - Add oil to the engine crankcase
Engine overloaded - Load reducing is recommended
Plugged cooling fins - Wash or clean as required
Carburetor fuel mixture is too lean - Set the carburetor properly
Ignition timing is improper - Adjust ignition timing as required
Valve setting is incorrect - Adjust valves as required
Engine noises or knocks
Stale gasoline - Change fuel
Excessive engine load - Reduce the load
Lack of engine oil - Fill the crankcase with engine oil
Too low idle RPM - Adjustment required
Fuel pump is dirty or defective - Test fuel pump and replace if necessary
Crankshaft or main bearings failure - Install new parts as as required
Valve clearance is improper - Adjust valve clearance
Damaged cylinder bore or piston rings - Change defective components
Lack of engine power
Improperly adjusted or dirty carburetor - Clean or correctly adjust carburetor
Air filter element is clogged - Clean or change air filter
Dirty or damaged fuel pump - Check fuel pump and change if required
Defective ignition - Inspect ignition system and change failed components
Cylinder head gasket is damaged - Install new head gasket
Valves are burned or stuck - Change or clean valves
Push rod is damaged or worn - Push rod needs to be changed
Cylinder block parts are damaged - Change defective parts
Excessive fuel consumption
Choke did not open fully - Change or adjust choke cable
Incorrect carburetor main jet adjustment - Adjust the carburetor main jet properly
Loose or defective spark plug - Spark plug need to be tightened or replaced
Burned, worn, or stuck valves - Change or clean valves
Worn rings, piston, or sleeve - Replace defective components as required
Valve clearance is improper - Need to adjust valve clearance
Engine consuming too much oil
Worn seals or gaskets - Replace to repair leaks
Worn valve guides and valve stems - Need to replace the valves
Piston rings are stuck or worn - Have piston rings replaced
Piston or cylinder liner is damaged - Check piston and liner, install new parts as required
Breather hose or pipe is blocked - Change or clean

Transmission Troubleshooting
Difficulty shifting gears
Gear shift linkage is damaged or loose - Replace or service the shift linkage
Shift forks are worn or damaged - Replace defective shift forks
Worn parts of the gear shifting mechanism - Change worn parts
Transmission is excessively noisy
Fluid level is low - Check and refill the transmission fluid
Transmission fluid contamination - Change transmission fluid
Damaged gears or bearings - Replace bearings or gears
Transmission jumps out of gear
Improperly installed or damaged shifting lever - Replace or install shift lever correctly
Worn or damaged gear teeth - Replace defective gears
Shift forks or shift rods are faulty - Replace defective rods or forks
Transmission slipping
Drive belt/shaft is defective or improperly adjusted - Adjust or replace belt/shaft
Clutch/brake is incorrectly adjusted or defective - Adjust clutch/brake or install a new one
Drive sheave is damaged or worn - Install a new sheave

Hydrostatic Transmission Troubleshooting
Excessive hydrostatic transmission noise
Worn or unadjusted speed control linkage - Change or adjust linkage
Transmission is under excessive load - Reduce transmission load
Transmission oil is contaminated or oil level is insufficient - Fill to required level or change the transmission oil
Transmission parts are worm or defective - Check hydrostatic transmission components for defect or damage and change if necessary
Hard to shift
Stuck or damaged gshift linkage - Replace or repair the linkage
Hydrostatic pump is stuck or worn - Repair or change pump
Defective or unadjusted transmission shift control components - Change or adjust correctly
Loss of power
Transmission fluid insufficient - Check and refill the transmission fluid
Drive sheave is defective or worn - Install a new sheave
Misadjusted or faulty shifting linkage - Adjust correctly or change linkage
Defective or not adjusted speed control pedal linkage - Adjust or repair linkage
Transmission leakage
Worn transmission seals or gaskets - Change seals or gaskets
Final drive shaft leakage - Install new shaft seals
Transmission case is cracked - Replace case or transmission assembly

Mower Deck Troubleshooting
Mower vibration is excessive
Dirty or worn mower drive sheave - Service or change sheave
Drive belt is worn or loose - Adjust belt tension or change the belt
Bent or unbalanced mower blades - Balance or replace blades
Loose blade mounting bolts - Tighten bolts as required
Constant clogging of discharge chute
High mowing speed - Use a slower speed
Tall grass - Adjust mower to lower cutting height
Engine rpm is too low - Adjust throttle to full opening
Mower cuts too low - Use correct cutting height
Mower drive belt installation is improper - Install drive belt as required
Streaking of uncut grass
Discharge chute is plugged - Mower deck needs to be cleaned
Blades are not sharp - Sharpen the blades
Worn or damaged blades - Change the blades
Ground speed is too fast - Use a slower speed
Cutting level is too low - Must be set to high cutting height
Grass bag is full - Remove grass from bag
Blades scalping grass
Lawn is not level or bumpy - Lawn needs to be leveled
Mower deck set to low cutting - Use a higher cutting height
Fast ground speed - Select a slower speed
Incorrectly leveled mower deck - Adjust mower deck level properly
Damaged or bent blades - Change the blades
Low tire inflation - Inflate tires as required
Mower cuts uneven
Tires are not properly inflated - Check and inflate the tires
Deck level is not correct - Adjust the level of mower deck correctly
Blades are excessively dull - Need a blade sharpening
Worn or bent blades - Change the blades
Deck is plugged with grass - Clean out the mower deck
Broken mower deck housing - Repair or replace the deck
Bent or loose mower spindle - Repair or change the spindle

Electrical Troubleshooting
Battery will not charge
Electrical cable connections are corroded or loose - Service or tighten connections
Defective battery terminal clamps - Terminal clamps need to be replaced
Battery failing - Install a new battery
Starter motor cranks slow
Low battery output voltage - Battery needs to be recharged
Battery runs out quickly - Service battery or replace it
Disconnected wiring or bad battery terminals - Check cable connections and replace or service terminals
Starter does not work
Battery is low or faulty - Charge or change the battery
Disconnected or incorrectly connected wires - Inspect battery wires and connect correctly
Battery voltage is low - Battery is drained, recharge it
Spark plug gapped improperly or faulty - Clean, gap or change spark plug
Solenoid or starter motor is faulty - Repair starter or replace solenoid



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