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Craftsman DGT6000 Troubleshooting

The Craftsman DGT6000 is a 2-wheel drive garden tractor. This model was manufactured between 2004 and 2005. The Craftsman DGT 6000 driveline consists of a 44 cu.in (725 cc) Kohler Command CV740 4-cycle V-twin cylinder OHV air-cooled gasoline engine and Hydro-Gear 311-3500 belt-driven hydrostatic transmission, or gear transmission with 6 forward and 2 revers gears.

The engine has a cylinder bore of 3.27" (83 mm), piston stroke of 2.64" (67 mm), and rated power of 27 hp (20.1 kW). The fuel system has a fixed main jet carburetor and pulse fuel pump.

Max. forward speed - 5.8 mph (9.3 km/h), max. reverse speed - 2.1 mph (3.4 km/h). The Craftsman DGT6000 tractor was equipped with 16x7.50-8 front tires and 24x12.0-12 rear tires. The tractor can be fitted with the following attachments: a 48" or 54" mid-mount 3-blade mower decks with cutting height of 1.5-4.5 inches (37-115 mm) and mechanical lift system.

Engine Troubleshooting
Engine starts hard or doesn't start
No fuel in fuel tank - Fill it up
Improper fuel grade - Use correct fuel grade
Fuel system clogged - Repair or replace
Spark plug wire connection are damaged - Inspect spark plug wiring connection, change or repair
Defective spark plug - Change spark plug as required
Clogged fuel filter - Fuel filter needs to be replaced
Brake pedal not pushed down - Push the brake pedal down
Carburetor malfunction - Check and repair as required
Weak cylinder compression - Inspect cylinder block and change worn parts
Throttle cable is adjusted incorrectly or damaged - Adjust properly or change the cable
Engine runs irregularly
Cooling fins are clogged - Need to wash or clean
Ignition system failure - Inspect ignition system and change faulty parts
Defective or stuck choke cable - Clean or replace the cable
Dirty air filter element - Service or change air filter
Fuel pump is clogged or faulty - Clean or replace fuel pump
Engine starts and stalls immediately
Spark plug is damaged - Install new spark plug
Carburetor is clogged or defective - Clean or replace carburetor
Ignition coil is damaged - Install a new ignition coil
Valve springs are bad or broken - Change valve springs
Valves sticking - Clean the valves
Engine keeps overheating
Not enough engine oil - Check and refill engine oil
Engine is overloaded - Reduce the load
Cooling fins are plugged - Need to wash or clean
Too lean carburetor mixture - Adjust carburetor correctly
Wrong ignition timing - Adjust ignition timing as required
Wrong valve setting - Valves needs to be adjusted properly
Engine knocking or noise
Low octane fuel - Use proper fuel
Engine overloaded - Reduce the load
Lack of engine oil - Fill up the engine oil
Incorrect low idle setting - Correct idle settings
Clogged or defective fuel pump - Check fuel pump and change if required
Crankshaft or main bearings are worn out - Change or repair worn components
Excessive valve clearance - Adjustment procedure required
Piston rings or cylinder bore are damaged - Change defective components
Engine power loss
Improperly or clogged carburetor - Adjust the carburetor properly or clean it
Clogged air filter - Clean or replace air filter
Dirty or defective fuel pump - Clean or replace fuel pump
Ignition failure - Inspect ignition system and change failed components
Cylinder head gasket is defective - Replace the head gasket
Valves are stuck or burned - Service or change valves
Push rod is worn or damaged - Install a new push rod
Cylinder block components are damaged - Defective components need to be replaced
Engine using too much gasoline
Insufficient throttle opening - Adjust or replace throttle cable
Incorrect carburetor main jet adjustment - Adjust main jet as required
Spark plug is loose or defective - Tighten or replace spark plug
Valves are worn, burned or stuck - Service or replace valves
Worn sleeve, rings, or piston - Change defective components
Valve clearance is incorrect - Adjustment procedure required
Excessive oil consumption
Worn seals or gaskets - Install new components
Valve stems and guides are worn - Valves must be replaced
Piston rings are stuck or broken - Change piston rings
Scuffed piston or cylinder liner - Inspect liner and piston, replace as necessary
Breather pipe or hose is plugged - Clean or replace

Transmission Troubleshooting
Hard to shift gears
Gear shift linkage is corroded or worn - Lubricate or replace shift linkage
Shift forks are worn or bent - Replace defective shift forks
Worn gear shift mechanism - Replace worn components
Transmission noises
Transmission oil level is low - Fill the transmission housing to proper oil level
Transmission oil is contaminated - Fill up with fresh transmission oil
Worn gears or bearings - Change faulty parts
Transmission jumping out of gear
Damaged or incorrectly installed gear shift lever - Install the lever correctly or replace it
Gears are worn or damaged - Replace gears
Faulty shift forks or shift rods - Replace damaged forks or rods
Transmission slips
Drive belt/shaft is defective or improperly adjusted - Change belt/shaft or adjust it
Brake/clutch is incorrectly adjusted or faulty - Install a new brake/clutch or adjust it
Worn or faulty drive pulley - Replace pulley

Hydrostatic Transmission Troubleshooting
HST transmission makes noise
Speed control pedal linkage is bent or not adjusted - Adjust or repair linkage
Transmission overload - Reduce loading
Transmission fluid is dirty or fluid level is too low - Add fluid to the correct level or fill the HST with fresh fluid
Worn or defective transmission components - Check hydrostatic transmission components for defect or damage and change if necessary
Hard shifting
Stuck or damaged gshift linkage - Replace or repair the linkage
Seized or worn hydrostatic pump - Replace or repair pump
Transmission shift control components are defective or misadjusted - Adjust properly or change
Low power
Low oil level - Fill the transmission housing with oil
Drive sheave is damaged or worn - Replace sheave
Shifting linkage is misadjusted or broken - Adjust properly or change linkage
Speed control linkage is worn or unadjusted - Adjust or repair linkage
Transmission leaks
Transmission gaskets or seals are worn - Replace gaskets or seals
Final drive shaft leaks - Shaft seals need to be changed
Cracked transmission housing - Replace damage housing or transmission assembly

Mower Deck Troubleshooting
Mower vibration is excessive
Mower deck drive pulley is worn or dirty - Replace or clean pulley
Damaged or loose drive belt - Adjust belt tension or change the belt
Mower blades are warped or not balanced - Balance or change blades
Blade bolts are not tightened well - Tighten it fast
Discharge chute regular clogging
High mowing speed - Select a slower speed
Long grass - Need to set low cutting height
Engine is running at too low speed - Adjust carburetor to higher rpm
Mower deck set to low cutting - Adjust mower to higher cutting height
Drive belt installation is not correct - Install drive belt as required
Grass patches are not cut
Deck clogged with grass clippings - Clean out the mower deck
Blades are not sharp - Sharpen the blades
Worn or damaged blades - Change the blades
High ground speed - Use a slower speed
Mower cuts too low - Use correct cutting height
Grass bag is overfilled - Clean grass bag
Blades scalping grass
Bumpy or unleveled lawn - Lawn needs to be leveled
Low cutting height - Need to set high cutting height
High ground speed - Use a lower speed
Improper mower deck level - Adjust the level of mower deck correctly
Bent or worn blades - Blades need to be replaced
Low tire pressure - Check and inflate the tires
Mower deck to cut unevenly
Incorrect tire pressure - Inflate tires correctly
Deck level is not correct - Adjust mower deck level properly
Not sharp blades - Need to sharpen the blades
Worn or bent blades - Replace the blades
Discharge area is clogged - Inspect and clean cutting deck
Broken mower deck housing - Replace or rebuild mower deck
Bent or loose mower spindle - Repair or replace the spindle

Electrical Troubleshooting
Battery will not charge
Wiring connections are corroded or loose - Service or tighten cable connections
Defective battery terminal clamps - Change terminal clamps
Worn-out battery - Replace the battery
Starter motor turns slow
Battery power is low - Battery is drained, charge it
Battery is draining quickly - Service or replace the battery
Terminals are faulty or battery cables are disconnected - Check cables and service or change terminals
Starter doesn't crank
Battery is low or faulty - Recharge or replace battery
Battery cables are disconnected or incorrectly connected - Check cables and connect as needed
Low battery power - Low battery charging, charge as required
Faulty or incorrectly gapped spark plug - Clean, gap or change spark plug
Starter motor or solenoid is defective - Change solenoid or repair starter



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