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Craftsman YS 4500 Troubleshooting
The
Craftsman YS 4500 lawn tractor was manufactured from 2006 to 2008. The Craftsman
YS4500 tractor is powered by Briggs and Stratton 331877 Intek single cylinder
gasoline engine with a rated power of 21 Hp (15.3 kW), Briggs and Stratton
441777 V-twin cylinder gasoline engine with a rated power of 22 Hp (16.2 kW),
Briggs and Stratton 31P977 single cylinder gasoline engine with a rated power of
20 Hp (14.9 kW), or Kohler Courage SV600 single cylinder gasoline engine with a
rated power of 20 Hp (14.9 kW).
The Craftsman YS 4500 is fitted with three types of transmission. Type
1: Dana D6800 mechanical transmission with 6 forward and 1 reverse
gears. Type 2: Tuff Torq K46 belt-driven hydrostatic transmission with
foot-controlled variable speed drive. Type 3: Hydro Gear 351-0510
hydrostatic transmission with infinite forward and reverse gears. The
maximum forward speed - 5.5 mph (8.8 km/h), max. reverse speed - 2.4 mph
(3.9 km/h).
The Craftsman YS4500 was equipped with a sector and pinion type
steering, disc brakes, 15x6.00-6 front tires, and 20x8.00-8 or 18x9.50-8
rear tires. The tractor is compatible with 42" or 46" mid-mount 2-blade
mower decks with cutting height of 1.0-4.0 in (25-100 mm), six cut
positions, and mechanical lifting system.
| Engine Troubleshooting |
| Engine won't start or hard to start |
| No fuel in fuel tank - Fill it up |
| Wrong grade of gasoline - Change gasoline |
| Water or air in fuel system - Remove air or water from system |
| Spark plug wire is loose or disconnected - Check spark plug wiring connection, repair or change |
| Spark plug is damaged - Replace spark plug |
| Clogged fuel filter - Replace fuel filter |
| Brake pedal not pushed down - Push the brake pedal down |
| Carburetor problems - Carburetor diagnostics required |
| Low cylinder compression - Check cylinder block and replace worn parts |
| Damaged or incorrectly adjusted choke cable - Adjust properly or replace the cable |
| Clogged cooling fins - Need to wash or clean |
| Ignition system problems - Inspect ignition system and change failed components |
| Throttle cable is stuck or faulty - Replace or service the cable |
| Air filter element is clogged - Change or service air filter |
| Dirty or defective fuel pump - Service or change fuel pump |
| Engine starts and stops suddenly |
| Damaged spark plug - Change spark plug |
| Faulty or clogged carburetor - Service or replace carburetor |
| Ignition coil is damaged - Install a new ignition coil |
| Valve springs are worn or loose - Replace valve springs |
| Valves sticking - Valves need to be cleaned |
| Low engine oil level - Fill up the engine oil |
| Excessive engine load - Reduce engine load |
| Cooling fins are blocked - Clean and wash as required |
| Too lean carburetor mixture - Use proper settings |
| Wrong ignition timing - Ignition timing needs to be set properly |
| Improper valve setting - Set the valves properly |
| Stale fuel - Use proper fuel |
| Engine overload - Load reducing required |
| Engine oil level is insufficient - Checking oil level and add if necessary |
| Low idle speed adjustment is incorrect - Correct the settings |
| Fuel pump is damaged or dirty - Test fuel pump and change if necessary |
| Crankshaft or main bearings wear - Change defective components as required |
| Valve clearance is wrong - Need to adjust valve clearance |
| Worn piston rings or cylinder bore - Replace faulty parts |
| Engine power is insufficient |
| Carburetor is dirty or incorrectly adjusted - Adjust carburetor properly or service it |
| Air filter element is clogged - Service or change air filter |
| Fuel pump is faulty or clogged - Clean or install new fuel pump |
| Ignition failure - Check ignition and replace faulty components |
| Defective cylinder head gasket - Cylinder-head gasket replacement required |
| Stuck or burned valves - Change or service valves |
| Push rod is worn or defective - Change push rod |
| Worn cylinder block parts - Replace defective parts as required |
| Excessive fuel consumption |
| Choke doesn't open well - Adjust or replace choke cable |
| Carburetor main jet is improperly adjusted - Adjust it correctly |
| Defective or loose spark plug - Re-tighten or change the spark plug |
| Valves are worn, burned or stuck - Service or change valves |
| Piston, sleeve, or rings are damaged - Change faulty parts |
| Excessive valve clearance - Adjust valve clearance |
| Excessive oil consumption |
| Gaskets or seals may be damaged - To repair leaks, replace worn parts |
| Valve guides or stems are damaged - Valves must be replaced |
| Stuck or defective piston rings - Install new piston rings |
| Scuffed piston or cylinder liner - Check liner and piston, install new components as required |
| Breather pipe or hose is clogged - Service or change |
| Transmission Troubleshooting |
| Gears are hard to shift |
| Gear shift linkage is loose or broken - Service or change the shift linkage |
| Damaged or worn gear shift forks - Change defective shift forks |
| Gear shifting mechanism is worn - Change worn components |
| Transmission oil level is low - Fill the transmission housing to proper oil level |
| Transmission oil is contaminated - Fill up with fresh transmission oil |
| Damaged bearings or worn gears - Change bearings or gears |
| Transmission jumping out of gear |
| Improperly installed or bent gear shift lever - Change or install shift lever properly |
| Damaged or worn gears - Change defective gears |
| Shift rods or shift forks are worn - Replace defective forks or rods |
| Improper drive belt/shaft adjustment or defective drive belt/shaft - Adjust belt/shaft or install a new one |
| Improper brake/clutch adjustment or damaged brake/clutch - Adjust or replace clutch/brake |
| Drive pulley is damaged or worn - Change pulley |
| Hydrostatic Transmission Troubleshooting |
| Hydrostatic transmission noises |
| Worn or out of adjustment speed control linkage - Replace or adjust linkage |
| Transmission overloaded - Reduce the load is required |
| Insufficient oil level or contaminated oil - Change transmission oil or top up to proper level |
| Worn or defective transmission components - Check internal transmission parts for damage or wear and replace if required |
| Shift linkage is rusty or worn - Lubricate or replace the linkage |
| Stuck or defective hydrostatic pump - Replace or repair pump |
| Misadjusted or faulty transmission shift control components - Replace or adjust as required |
| Transmission oil level is low - Add oil to the transmission housing |
| Drive pulley is defective or worn - Replace pulley |
| Broken or not adjusted shift linkage - Replace or adjust linkage |
| Speed control pedal linkage is bent or not adjusted - Adjust or change linkage |
| Broken transmission gaskets or seals - Install new gaskets or seals |
| Final drive shaft is leaking - Replace shaft seals |
| Transmission housing is cracked - Install a new transmission housing |
| Mower Deck Troubleshooting |
| Excessive mower vibration |
| Damaged or clogged mower drive pulley - Replace or service pulley |
| Drive belt is defective or loose - Adjust belt tension or replace belt |
| Mower blades are bent or out of balance - Balance or change blades |
| Loose blade bolts tightening - Bolts need to be tightened |
| Discharge chute is constantly plugged |
| Ground speed is too fast - Select a slower speed |
| Tall grass - Must be set to low cutting height |
| Engine is running at too low speed - Adjust throttle to full opening |
| Low cutting height - Need to set high cutting height |
| Mower deck drive belt installed incorrectly - Check drive belt for correct installation |
| Deck is plugged with grass - Check cutting deck and clean as necessary |
| Excessive blade dullness - Need a blade sharpening |
| Blades are defective or worn - Install new blades |
| High ground speed - Select a lower speed |
| Mower cuts too low - Adjust mower to higher cutting height |
| Grass bag is overfilled - Empty the grass bag |
| Uneven or bumpy lawn - Lawn needs to be leveled |
| Mower deck set to low cutting - Use a higher cutting height |
| High mowing speed - Need to slow down |
| Improperly leveled mower deck - Adjust the level of mower deck correctly |
| Bent or worn blades - Blades need to be replaced |
| Tires are not correctly inflated - Inflate tires correctly |
| Low tire inflation - Inflate tires correctly |
| Improper mower deck level - Adjust mower deck level properly |
| Excessive blade dullness - Blades need to be sharpened |
| Bent or worn blades - Blades must be changed |
| Cutting deck clogging - Clean mower deck as required |
| Deck housing is damaged - Replace or repair the deck |
| Mower spindle is bent or loose - Spindle needs to be repaired or replaced |
| Electrical Troubleshooting |
| Battery won’t charge |
| Loose or corroded electrical wiring connections - Tighten or clean electrical wiring connections |
| Faulty battery terminal clamps - Install new terminal clamps |
| Battery dead cell - Replace the battery |
| Low battery output - Low battery charging, charge as required |
| Battery discharges quickly - Battery needs to be serviced or replaced |
| Disconnected cables or faulty battery terminals - Check cables and service or change terminals |
| Starter motor is not working |
| Battery is drained or worn - Need to charge or replace the battery |
| Wiring is improperly connected or disconnected - Check wiring and connect properly |
| Low battery capacity - Recharge the battery |
| Spark plug worn or incorrectly gapped - Replace or clean and gap |
| Defective solenoid or starter motor - Repair starter or install a new solenoid |
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| Lawn and Garden Tractors Technical Specs |
