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Craftsman YT4500 Troubleshooting
The
Craftsman YT4500 is a 2WD lawn tractor. This model was manufactured by Husqvarna
built from 2010 to 2013.
The Craftsman YT4500 tractor is powered by 44 cubic inches (725 cc)
Kohler Courage SV735 4-cycle V-twin cylinder air-cooled gasoline engine
with a maximum output power of 26 Hp (19.4 kW), or 44.1 cubic inches
(726 cc) Briggs and Stratton 445877 4-cycle V-twin cylinder gasoline
engine with max power of 26 Hp (19.4 kW). The Craftsman YT4500 is
equipped with 2 types of transmission. 1st type: Tuff Torq K46
belt-driven hydrostatic transmission.
2nd type: Hydro Gear hydrostatic transmission. The maximum forward speed
- 5.5 mph (8.8 kph), max. reverse speed - 2.9 mph (4.7 kph). The
Craftsman YT4500 was equipped with a manual sector and pinion steering
system, mechanical disc brakes, 15x6.00-6 front tires, and 20x10.00-8
rear tires. The lawn tractor is compatible with a 54" mid-mount 3-blade
mower deck with a cutting height of 1.5-4.0 in (37-100 mm) and manual
lift system.
| Engine Troubleshooting |
| Engine difficult to start or will not start |
| No fuel in fuel tank - Fill gasoline up |
| Incorrect fuel grade - Use quality fuel |
| There is air in the fuel system - Bleed the system |
| Disconnected or loose spark plug wire - Check the spark plug wire connection, repair or replace |
| Defective spark plug - Change spark plug |
| Clogged fuel filter - Replace fuel filter |
| Brake pedal not pushed down - Push the brake pedal down |
| Carburetor components worn out - Repair or replace parts |
| Engine has bad compression - Check cylinder block and change wear parts |
| Unadjusted or worn throttle cable - Adjust properly or change the cable |
| Air intake screen is plugged - Clean and wash as required |
| Defective ignition - Inspect ignition system and change faulty parts |
| Defective or stuck choke cable - Change or clean the cable |
| Air filter is dirty - Clean or change air filter |
| Fuel pump is faulty or clogged - Clean or install new fuel pump |
| Engine starts and then stalls |
| Damaged spark plug - Replace spark plug |
| Carburetor is dirty or faulty - Service or repair carburetor |
| Faulty ignition coil - Ignition coil must be replaced |
| Damaged or weak valve springs - New valve springs need to be installed |
| Valves sticking - Service the valves |
| Insufficient engine oil - Fill the crankcase with engine oil |
| Engine is overloaded - Reduce the load |
| Cooling fins are plugged - Wash or clean as required |
| Carburetor mixture is too lean - Make the correct settings |
| Ignition timing is wrong - Set the ignition timing correctly |
| Valve setting is incorrect - Adjust valves correctly |
| Engine knocking sound or abnormal noise |
| Low octane fuel - Change gasoline |
| Engine overload - Reduce engine load |
| Engine oil level is low - Fill up the engine oil |
| Improperly adjusted low idle speed - Adjust idling as required |
| Dirty or damaged fuel pump - Service or replace fuel pump |
| Main bearings or crankshaft are worn out - Worn parts replacement required |
| Valve clearance is incorrect - Adjust valve clearance according to specifications |
| Cylinder bore or piston rings are worn - Replace faulty components |
| Carburetor is improperly adjusted or clogged - Service or properly adjust carburetor |
| Air filter is dirty - Replace or service air filter |
| Fuel pump is defective or dirty - Clean or install new fuel pump |
| Ignition system malfunction - Inspect ignition system and change failed components |
| Blown cylinder head gasket - Change cylinder head gasket |
| Burned or stuck valves - Replace or service valves |
| Worn or bent push rod - Push rod should be replaced |
| Damaged cylinder block components - Defective components need to be replaced |
| Throttle did not open fully - Replace or adjust throttle cable |
| Carburetor main jet adjustment is incorrect - Adjust the carburetor main jet correctly |
| Spark plug is faulty or loose - Tighten or replace spark plug |
| Stuck, worn, or burned valves - Service or replace valves |
| Worn sleeve, piston, or rings - Change faulty components |
| Valve clearance is not correct - Check and adjust |
| Engine consuming too much oil |
| Seals or gaskets are defective - Defective components must be replaced |
| Worn valve stems and valve guides - Valves replacement required |
| Worn or broken piston rings - Piston rings replacement required |
| Worn cylinder liner or piston - Inspect piston and liner, change as required |
| Blocked breather hose or pipe - Clean or change |
| Transmission Troubleshooting |
| Hard to shift gears |
| Gear shift linkage is stuck or worn - Clean or replace shift linkage |
| Worn or bent gear shift forks - Shift forks need to be replaced |
| Gear shifting mechanism is defective - Defective parts must be replaced |
| Lack of transmission fluid supply - Add fluid as required |
| Oil contamination - Change transmission oil |
| Bearings or gears are worn - Install new bearings or gears |
| Transmission pops out of gear |
| Bent or incorrectly installed shift lever - Reinstall the lever properly or change it |
| Gears are worn or damaged - Change gears |
| Faulty shift forks or shift rods - Replace damaged forks or rods |
| Defective drive shaft/belt or incorrect drive shaft/belt adjustment - Adjust belt/shaft or install a new one |
| Brake/clutch is damaged or improperly adjusted - Adjust or change brake/clutch |
| Damaged or worn drive pulley - Install a new pulley |
| Hydrostatic Transmission Troubleshooting |
| Hydrostatic transmission noise |
| Speed control pedal linkage is damaged or out of adjustment - Adjust or change linkage |
| Transmission is under excessive load - Load needs to be reduced |
| Fluid is contaminated or fluid level is insufficient - Fill to required level or change the fluid |
| Worn or defective parts of the hydrostatic transmission - Check internal transmission parts for damage or wear and replace if required |
| Shift linkage is corroded or worn - Lubricate or replace linkage |
| Hydrostatic pump is seized or faulty - Repair or replace pump |
| Transmission shift control components are worn or unadjusted - Adjust properly or change |
| Insufficient transmission oil - Fill the transmission housing to proper oil level |
| Drive pulley is worn or faulty - Change pulley |
| Not adjusted or damaged shifter linkage - Adjust correctly or change linkage |
| Speed control linkage is defective or unadjusted - Change or adjust linkage |
| Broken transmission gaskets or seals - Replace seals or gaskets |
| Final drive shaft leaks - Shaft seals need to be changed |
| Cracked transmission housing - Replace housing or transmission assembly |
| Mower Deck Troubleshooting |
| Mower vibrates excessively |
| Drive pulley of mower deck is damaged or dirty - Clean or change pulley |
| Drive belt is loose or defective - Adjust belt tension or install a new belt |
| Cutting blades are not balanced or warped - Replace or balance blades |
| Blade mounting bolts are loose - Bolts should be tightened |
| Constant clogging of discharge chute |
| Mowing speed is too high - Need to slow down |
| Grass is too high - Need to set low cutting height |
| Engine is running at too low speed - Throttle is not fully open |
| Cutting height is too low - Need to set high cutting height |
| Drive belt installed improperly - Drive belt must be installed correctly |
| Deck clogged with grass clippings - Need to clean the mower deck |
| Excessive blade dullness - Need to sharpen the blades |
| Blades are defective or worn - Change the blades |
| Fast ground speed - Select a slower speed |
| Cutting height is too low - Use correct cutting height |
| Filled bagger - Remove grass from bagger |
| Uneven or bumpy lawn - Level the lawn |
| Mower deck cutting height is set too low - Need to set high cutting height |
| Mowing speed is too high - Operate at slower speed |
| Incorrectly leveled mower deck - Deck needs to be adjusted properly |
| Blades are worn or bent - Blades must be changed |
| Incorrect tire pressure - Need to inflate tires |
| Tire pressure is too low - Check and inflate the tires |
| Improperly leveled mower deck - Level the deck properly |
| Not sharp blades - Sharpen the blades |
| Blades are defective or worn - Change the blades |
| Mower deck is clogged - Inspect and clean cutting deck |
| Deck shell is damaged - Replace or rebuild mower deck |
| Mower spindle is faulty or loose - Change or repair the spindle |
| Electrical Troubleshooting |
| Battery will not charge |
| Electrical cable connections are loose or corroded - Service or tighten cable connections |
| Defective electrical terminal connectors - Change terminal connectors |
| Battery is worn - Battery replacement required |
| Battery voltage is low - Low battery charging, charge as required |
| Battery is draining quickly - Service or replace the battery |
| Wires are disconnected or battery terminals are corroded - Connect wires correctly or change terminals |
| Battery is drained or defective - Charge or replace the battery |
| Battery wires are disconnected or incorrectly connected - Check wires and connect correctly |
| Low battery output - Charge the battery |
| Spark plug gapped improperly or faulty - Clean, gap or change spark plug |
| Starter motor or solenoid is defective - Change solenoid or repair starter |
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| Lawn and Garden Tractors Technical Specs |
