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Craftsman DYS 4500 Troubleshooting
The
Craftsman DYS 4500 lawn tractor was manufactured by AYP built from 2006 to 2008.
The Craftsman DYS4500 is powered by 44.2 cu.in (724 cc) Briggs and Stratton
4-cycle V-twin cylinder OHV air-cooled gasoline engine with a rated power of 24
hp (17.8 kW), or 44 cu.in (725 cc) Kohler Courage SV735 4-cycle V-twin cylinder
OHV air-cooled gasoline engine with a rated power of 26 hp (19.4 kW).
The Craftsman DYS 4500 tractor is fitted with two transmission options:
belt-driven hydrostatic transmission with infinite forward and reverse
gears, and belt-driven gear transmission with 6 forward and 1 gears.
The maximum travel speed (forward and reverse): 5.5 mph (8.8 km/h) / 2.4
mph (3.9 km/h). The Craftsman DYS 4500 was equipped with a sector and
pinion type steering, mechanical disc brakes, 15x6.00-6 front tires, and
20x10.00-8 or 18x9.50-8 rear tires. Compatible attachments for the lawn
tractor: 42" and 46" mid-mount 2-blade mower decks with cutting height
of 1.5-4.0 in (37-100 mm), or 54" mid-mount 3-blade mower deck with
manual lift system.
| Engine Troubleshooting |
| Engine hard to start or won't start |
| Empty gas tank - Fill gasoline up |
| Low-quality gasoline - Change fuel |
| Air in fuel tank - Bleed fuel tank |
| Damaged spark plug wiring connection - Check the spark plug wire connection, repair or replace |
| Faulty spark plug - Replace spark plug |
| Dirty fuel filter - Replace fuel filter |
| Defective safety switch - Replace if required |
| Carburetor is not adjusted - Check carburetor float adjustment |
| Engine has low compression - Check cylinder block and replace defective parts |
| Throttle cable is adjusted improperly or worn - Adjust correctly or change the cable |
| Plugged cooling fins - Wash or clean as required |
| Defective ignition - Check ignition system and replace faulty parts |
| Stuck or defective throttle cable - Replace or clean the cable |
| Air filter is dirty - Clean or replace air filter |
| Dirty or faulty fuel pump - Service or replace fuel pump |
| Engine starts but immediately shuts off |
| Faulty spark plug - Change spark plug |
| Faulty or clogged carburetor - Clean or install new carburetor |
| Ignition coil is faulty - Ignition coil should be replaced |
| Broken or bad valve springs - Install new valve springs |
| Valves are stuck - Service the valves |
| Engine oil level is insufficient - Add oil to the engine crankcase |
| Engine overload - Load reducing required |
| Cooling fins are clogged - Need to wash or clean |
| Too lean fuel mixture in carburetor - Adjust carburetor properly |
| Improper ignition timing - Set the ignition timing correctly |
| Valve setting is incorrect - Valves needs to be set correctly |
| Stale fuel - Change gasoline |
| Engine is under excessive load - Load reducing is recommended |
| Engine oil level low - Check oil level and add oil as required |
| Incorrectly adjusted low idle speed - Test and adjust |
| Dirty or faulty fuel pump - Test fuel pump and change if necessary |
| Worn main bearings or crankshaft - Worn parts replacement required |
| Improper valve clearance - Check and adjust |
| Damaged piston rings or cylinder bore - Change faulty parts |
| Incorrectly adjusted or dirty carburetor - Carburetor needs to be adjusted correctly or cleaned |
| Air filter element is clogged - Replace or service air filter |
| Dirty or faulty fuel pump - Inspect fuel pump and change as required |
| Ignition system malfunction - Inspect ignition system and change failed components |
| Cylinder head gasket is damaged - Replace the gasket as required |
| Valves are burned or stuck - Replace or service valves |
| Push rod is worn or defective - Push rod should be replaced |
| Cylinder block components are worn - Replace defective components |
| Engine using too much gasoline |
| Throttle does not open well - Inspect throttle cable and adjust it |
| Carburetor main jet is improperly adjusted - Adjust the carburetor main jet correctly |
| Faulty or loose spark plug - Re-tighten or replace spark plug |
| Stuck, worn, or burned valves - Clean or replace valves |
| Worn piston, rings, or sleeve - Change faulty components |
| Excessive valve clearance - Need to adjust valve clearance |
| Engine using too much oil |
| Damaged seals or gaskets - Worn parts need to be replaced |
| Damaged valve stems or valve guides - Replace defective valves |
| Worn or broken piston rings - Change the piston rings as required |
| Cylinder liner or piston is worn - Check piston and liner, replace as required |
| Breather hose or pipe is plugged - Change or service |
| Transmission Troubleshooting |
| Gear hard to shift |
| Gear shift linkage is stuck or damaged - Clean or change shift linkage |
| Damaged or worn gear shift forks - Change the shift forks |
| Gear shifting mechanism is worn - Change worn components |
| Transmission makes excessive noise |
| Insufficient fluid supply - Fill the transmission housing with fluid |
| Transmission fluid is contaminated - Fill up with new transmission fluid |
| Damaged gears or worn bearings - Install new bearings or gears |
| Transmission jumping out of gear |
| Gear shift lever is bent or installed improperly - Change or install shift lever properly |
| Gear teeth are damaged or worn - Change gears |
| Shift forks or shift rods are faulty - Replace defective rods or forks |
| Drive shaft/belt is incorrectly adjusted or worn - Install a new shaft/belt or adjust it |
| Brake/clutch is worn or incorrectly adjusted - Adjust or replace clutch/brake |
| Damaged or worn drive pulley - Install a new pulley |
| Hydrostatic Transmission Troubleshooting |
| HST transmission noises |
| Speed control pedal linkage is damaged or out of adjustment - Adjust or install new linkage |
| Excessive loading - 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 - After disassembly and inspection, replace defective components |
| Stuck or worn shift linkage - Linkage need to be replaced |
| Stuck or defective hydrostatic pump - Replace or repair pump |
| Defective or unadjusted transmission shift control components - Replace or adjust as required |
| Transmission fluid insufficient - Checking transmission fluid level and add if necessary |
| Defective or worn drive sheave - Change sheave |
| Damaged or misadjusted shifter linkage - Adjust correctly or replace linkage |
| Speed control linkage is defective or unadjusted - Adjust or replace linkage |
| Broken transmission gaskets or seals - Replace seals or gaskets |
| Final drive shaft leakage - Replace shaft seals |
| Transmission housing is cracked - Housing needs to be replaced |
| Mower Deck Troubleshooting |
| Mower vibration is excessive |
| Worn or dirty mower drive pulley - Clean or change pulley |
| Drive belt is damaged or loose - Replace belt or adjust belt tension |
| Mower blades are bent or out of balance - Replace or balance blades |
| Loose blade bolts tightening - Tighten it fast |
| Discharge chute is regularly plugged |
| Ground speed is too fast - Use a slower speed |
| Grass is too high - Adjust mower to lower cutting height |
| Reduced engine speeds - Choke is not fully opening |
| Low cutting height - Need to set high cutting height |
| Drive belt installed improperly - Drive belt must be installed correctly |
| Mower deck is clogged - Check cutting deck and clean as necessary |
| Excessive blade dullness - Blades need to be sharpened |
| Defective or worn blades - Change the blades |
| Fast ground speed - Operate at slower speed |
| Cutting level is too low - Adjust mower to higher cutting height |
| Bagger is full - Clean bagger |
| Lawn is bumpy or not smooth - Roll or level the lawn |
| Cutting level is too low - Use a higher cutting height |
| Fast ground speed - Operate at slower speed |
| Improperly leveled mower deck - Level the deck correctly |
| Worn or bent blades - Blades must be changed |
| Tires are not correctly inflated - Correct tire pressure |
| Tires are not properly inflated - Correct tire pressure |
| Incorrect level of mower deck - Level the deck properly |
| Not sharp blades - Sharpen the blades |
| Bent or worn blades - Install new blades |
| Deck is plugged with grass - Need to clean the mower deck |
| Deck housing is broken - Rebuild or change mower deck |
| Loose or defective mower spindle - Replace or repair the spindle |
| Electrical Troubleshooting |
| Battery will not charge |
| Electrical wire connections are corroded or loose Tighten or clean electrical wiring connections |
| Battery terminal clamps are defective - Install new terminal clamps |
| Battery bad cell - Change the battery |
| Low battery output voltage - Battery needs to be recharged |
| Battery is not holding charge - Battery needs service or replacement |
| Wires are disconnected or battery terminals are corroded - Check wire connections and change or service terminals |
| Battery is discharged or worn - Recharge or change battery |
| Wire harness is disconnected or incorrectly connected - Check wire harness and connect as required |
| Low battery voltage - Charge the battery |
| Spark plug worn or incorrectly gapped - Replace or clean and gap |
| Starter motor or solenoid is damaged - Starter/solenoid should be replaced |
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| Lawn and Garden Tractors Technical Specs |
