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Craftsman LT2000 Troubleshooting

The Craftsman LT2000 lawn tractor was manufactured from 2003 to 2010. The Craftsman LT2000 tractor is powered by Briggs and Stratton 31P677 gasoline engine with a rated power of 20 Hp (14.8 kW), Briggs and Stratton 331777 gasoline engine with a rated power of 21 Hp (15.3 kW), Briggs and Stratton 31G777 Intek gasoline engine with a rated power of 17.5 Hp (13 kW), Kohler Command CV492 gasoline engine with a rated power of 18 Hp (13.4 kW), or Kohler Command CV490 gasoline engine with a rated power of 17 Hp (12.7 kW).

The Craftsman LT2000 is fitted with a 5 transmission options: MTD 918-04892 belt-driven hydrostatic transmission, Hydro Gear hydrostatic transmission, 7x1 Shift-On-The-Go gear transmission, 6x1 Peerless 206-545 belt-driven gear transmission, or 6x1 Dana D6800 gear transmission. The maximum travel speed (forward/reverse): 5.6 mph (9 kph) and 2.8 mph (4.3 kph).

The tractor was equipped with a manual steering, mechanical disc brakes, 15x6.00-6 front tires, and 20x8.00-8 rear tires. The tractor is compatible with a 42" mid-mount 2-blades mower deck with cutting height of 1.5-4.0" (37-101 mm), six cut positions, and mechanical lift system.

Engine Troubleshooting
Engine starts hard or won't start
No gasoline in tank - Add fuel
Improper fuel grade - Use correct gasoline grade
Air or water in fuel system - Remove water or air from fuel system
Spark plug wiring connection is defective - Inspect the spark plug wire connection, replace or repair
Spark plug is faulty - Spark plug need to be replaced
Fuel filter is plugged - Replace fuel filter
Faulty safety switch - Change damaged switch
Carburetor settings incorrect - Adjusting as required
Poor engine compression - Check cylinder block and replace damaged components
Choke cable is worn or not adjusted properly - Adjust properly or change the cable
Engine runs unevenly
Clogged cooling fins - Need to wash or clean
Ignition system malfunction - Check ignition system and replace faulty parts
Stuck or faulty throttle cable - Clean or replace the cable
Clogged air filter - Clean or replace air filter
Fuel pump is defective or dirty - Inspect fuel pump and change as required
Engine starts but then shuts off
Spark plug is defective - Change spark plug
Carburetor is dirty or faulty - Carburetor needs to be replaced or cleaned
Ignition coil is not working - Ignition coil must be replaced
Loose or worn valve springs - Install new valve springs
Stuck valves - Service the valves
Engine overheated
Low engine oil level - Checking oil level and add if necessary
Engine is under excessive load - Reduce the load
Air intake grill is clogged - Need to wash or clean
Carburetor is running lean - Set the carburetor properly
Incorrect ignition timing - Set the ignition timing properly
Wrong valve setting - Set the valves correctly
Engine noises or knocks
Low octane fuel - Change fuel
Excessive engine load - Reduce engine load
Engine oil insufficient - Check oil level and add oil as required
Low idle speed adjustment is incorrect - Adjust idling as required
Fuel pump is damaged or dirty - Clean or replace fuel pump
Worn main bearings or crankshaft - Have bearings or crankshaft replaced
Improper valve clearance - Need to adjust valve clearance
Worn piston rings or cylinder bore - Change faulty components
Engine power is insufficient
Dirty or improperly adjusted carburetor - Adjust the carburetor correctly or clean it
Plugged air filter - Clean or change air filter
Fuel pump is damaged or dirty - Clean or change fuel pump
Ignition system malfunction - Inspect ignition system and change failed components
Cylinder head gasket is damaged - Install new head gasket
Valves are stuck or burned - Change or clean valves
Worn or damaged push rod - Replace push rod
Damaged cylinder block components - Replace defective parts
Excessive fuel consumption
Choke did not open fully - Change or adjust choke cable
Improper carburetor main jet adjustment - Adjust it properly
Defective or loose spark plug - Re-tighten or replace spark plug
Stuck, burned, or worn valves - Change or clean valves
Sleeve, piston, or rings are damaged - Change defective parts
Excessive valve clearance - Adjust valve clearance
Excessive engine oil consumption
Seals or gaskets are wearing excessively - Replace worn parts to avoid leaks
Worn valve guides and valve stems - Valves replacement required
Seized or wear piston rings - Replace piston rings
Piston or cylinder liner is scored - Check piston and liner, install new parts as required
Breather pipe or hose is blocked - Replace or service

Transmission Troubleshooting
Difficulty shifting gears
Gear shift linkage is loose or broken - Service or change the shift linkage
Bent or worn shift forks - Replace the shift forks
Worn gear shifting mechanism - Repair or change worn components if necessary
Transmission is making noise
Low transmission fluid level - Add fluid to the transmission housing
Dirty transmission oil - The oil must be changed
Gears are worn or bearings are damaged - Change faulty parts
Transmission jumping out of gear
Shifting lever is incorrectly installed or bent - Replace or install shift lever correctly
Gears are worn or damaged - Replace defective gears
Shift rods or shift forks are worn - Replace defective rods or forks
Transmission slipping
Drive shaft/belt is improperly adjusted or damaged - Replace belt/shaft or adjust it
Brake/clutch is damaged or improperly adjusted - Change clutch/brake or adjust it
Worn or damaged drive sheave - Install a new sheave

Hydrostatic Transmission Troubleshooting
Excessive hydrostatic transmission noise
Speed control linkage is defective or unadjusted - Replace or adjust linkage
Excessive loading - The load should be reduced
Insufficient oil level or contaminated oil - Fill to required level or change the transmission oil
Transmission components are damaged or worn - After disassembling and inspection, change defective components
Hard shifting
Shift linkage is corroded or worn - Lubricate or replace linkage
Hydrostatic pump is blocked or defective - Repair or change pump
Worn or misadjusted transmission shift control parts - Change or adjust correctly
Lack of power
Low fluid level - Need to add transmission fluid
Faulty or worn drive sheave - Install a new sheave
Not adjusted or damaged shifter linkage - Adjust correctly or change linkage
Speed control pedal linkage is bent or not adjusted - Adjust or repair linkage
Transmission leaks
Transmission gaskets or seals are damaged - Change gaskets or seals
Leaking final drive shaft - Change shaft seals
Cracked transmission case - Replace defective case or transmission assembly

Mower Deck Troubleshooting
Mower vibrates excessively
Mower deck drive pulley is worn or dirty - Change or clean pulley
Defective or loose drive belt - Belt needs to be adjusted or replaced
Bent or unbalanced cutting blades - Balance or change as needed
Blade bolts are not tightened well - Bolts should be tightened
Discharge chute is regularly plugged
Mowing speed is too high - Select a lower speed
Grass is too high - Adjust mower to lower cutting height
Low engine speeds - Open throttle fully
Low cutting height - Use correct cutting height
Improper drive belt installation - Install drive belt as required
Patches of grass uncut
Cutting deck clogging - Mower deck needs to be cleaned
Not sharp blades - Need to sharpen the blades
Damaged or worn blades - Replace the blades
Fast ground speed - Select a slower speed
Mower cuts too low - Must be set to high cutting height
Grass bag is overfilled - Empty the grass bag
Blades scalping grass
Bumpy or unleveled lawn - Lawn needs to be leveled
Low cutting height - Adjust mower to higher cutting height
High mowing speed - Use a lower speed
Improperly leveled mower deck - Level the deck properly
Damaged or bent blades - Install new blades
Tires are not properly inflated - Check and inflate the tires
Mower cuts uneven
Incorrect tire pressure - Correct tire pressure
Improperly leveled mower deck - Adjust the level of mower deck correctly
Not sharp blades - Need to sharpen the blades
Blades are defective or worn - Change the blades
Cutting deck clogging - Check cutting deck and clean as necessary
Deck shell is damaged - Replace or rebuild mower deck
Mower spindle is loose or defective - Replace or repair the spindle

Electrical Troubleshooting
Battery will not charge
Corroded or loose electrical wire connections - Clean or tighten connections
Faulty electrical terminal connectors - Install new terminal connectors
Bad cell in battery - Replace the battery
Starter cranks slowly
Low battery output - Recharge the battery
Battery is not holding charge - Service charging system or install new battery
Bad terminals or disconnected battery cables - Check wiring connections and replace or clean terminals
Starter doesn't crank
Battery is low or faulty - Battery needs to be recharged or replaced
Wire harness is disconnected or incorrectly connected - Check wire harness and connect as required
Low battery voltage - Battery is drained, recharge it
Spark plug gapped improperly or faulty - Clean, gap or replace spark plug
Defective solenoid or starter motor - Replace solenoid or repair starter



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