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John Deere LT133 Troubleshooting
The
John Deere LT133 is a LT-series lawn tractor. This model was manufactured from
1998 to 2001. The John Deere LT133 powertrain system components: Kohler Command
CV13S vertical shaft four-cycle single cylinder gasoline engine and Dana 4360
mechanical transmission with 5 forward and 1 reverse gears.
A 24.3 cubic inches (398 cc) engine has a cylinder bore of 3.43" (87
mm), piston stroke of 2.64" (67 mm), and rated power of 13 hp (9.8 kW).
Max. forward speed - 5.3 mph (8.5 kph), max. reverse speed - 2.4 mph
(3.9 kph).
The John Deere LT133 was equipped with a manual steering system, disc
brakes, 15x6.00-6 front tires, and 20x10.00-8 rear tires. The wheel base
is 48 in (1210 mm). Compatible attachments for the tractor: a 38"
mid-mount 2-blade mower deck with cutting height of 1-4" (25-102 mm),
and 42" front blade with manual lift system.
| Engine Troubleshooting |
| Engine starts up hard or won't start |
| No fuel in fuel tank - Fill it up |
| Improper fuel grade - Change gasoline |
| Air in the fuel pipes - Bleed the fuel pipes |
| Defective spark plug wire connection - Check spark plug wiring connection, repair or change |
| Spark plug is faulty - Install new spark plug |
| Fuel filter is plugged - Install new filter |
| Faulty safety switch - Change damaged switch |
| Carburetor components worn out - Repair or replace parts |
| Low cylinder compression - Check cylinder block and replace worn parts |
| Damaged or incorrectly adjusted choke cable - Adjust correctly or change the cable |
| Cooling fins are plugged - Need to clean or wash |
| Ignition system malfunction - Check ignition and replace faulty components |
| Throttle cable is faulty or stuck - Change or service the cable |
| Air filter element is clogged - Change or service air filter |
| Dirty or faulty fuel pump - Service or change fuel pump |
| Engine starts and stalls immediately |
| Spark plug is damaged - Spark plug need to be replaced |
| Defective or dirty carburetor - Service or replace carburetor |
| Ignition coil is damaged - Change ignition coil as required |
| Valve springs are damaged or weak - Change valve springs |
| Valves sticking - Service the valves |
| Engine oil level is low - Checking oil level and add if necessary |
| Excessive engine load - Load reducing required |
| Cooling fins are plugged - Need to wash or clean |
| Carburetor fuel mixture is too lean - Use proper settings |
| Incorrect ignition timing - Set the ignition timing properly |
| Improper valve setting - Valves needs to be set correctly |
| Abnormal engine knocking or noise |
| Stale gasoline - Use correct fuel |
| Excessive engine load - Load reducing is recommended |
| Insufficient engine oil - Fill the crankcase with engine oil |
| Incorrectly adjusted low idle speed - Correct the settings |
| Fuel pump is faulty or clogged - Check fuel pump and change if required |
| Crankshaft or main bearings wear - Change defective components as required |
| Incorrect valve clearance - Need to adjust valve clearance |
| Cylinder bore or piston rings are damaged - Change faulty components |
| Clogged or improperly adjusted carburetor - Service or correctly adjust carburetor |
| 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 - Check ignition system and replace faulty parts |
| Defective cylinder head gasket - Install new cylinder head gasket |
| Stuck or burned valves - Replace or clean valves |
| Push rod is bent or worn - Replace push rod |
| Worn cylinder block components - Replace defective components |
| Excessive fuel consumption |
| Choke is not fully open - Check choke cable and adjust it |
| Carburetor main jet is incorrectly adjusted - Adjust it properly |
| Defective or loose spark plug - Tighten or change the spark plug |
| Valves are stuck, burned, or worn - Replace or service valves |
| Piston, sleeve, or rings are damaged - Change defective components |
| Valve clearance is improper - Adjust valve clearance |
| Excessive oil consumption |
| Gaskets or seals can be faulty - Install new components |
| Damaged valve guides or valve stems - Replace defective valves |
| Seized or wear piston rings - Have piston rings replaced |
| Scored cylinder liner or piston - Inspect liner and piston, change as necessary |
| Breather hose or pipe is clogged - Replace or service |
| Transmission Troubleshooting |
| Difficulty shifting gears |
| Rusty or worn gear shift linkage - Install a new gear shift linkage |
| Worn or bent shift forks - Shift forks need to be changed |
| Worn gear shift mechanism - Replace worn components |
| Transmission makes excessive noise |
| Low transmission fluid level - Add fluid to the transmission housing |
| Oil contamination - Change transmission oil |
| Damaged bearings or worn gears - Replace faulty parts |
| Transmission jumping out of gear |
| Shift lever is bent or installed incorrectly - Replace or install shift lever correctly |
| Gear teeth are damaged or worn - Install new gears |
| Faulty shift rods or shift forks - Change damaged rods or forks |
| Worn drive shaft/belt or improper drive shaft/belt adjustment - Change belt/shaft or adjust it |
| Brake/clutch is damaged or improperly adjusted - Adjust clutch/brake or install a new one |
| Worn or faulty drive pulley - Change pulley |
| Mower Deck Troubleshooting |
| Mower vibrates excessively |
| Worn or dirty mower drive pulley - Change or clean pulley |
| Loose or defective drive belt - Adjust belt tension or change the belt |
| Cutting blades are bent or unbalanced - Balance or change as needed |
| Loose blade mounting bolts - Tighten bolts as required |
| Constant clogging of discharge chute |
| Mowing speed is too high - Operate at slower speed |
| Grass is too high - Adjust mower to lower cutting height |
| Engine runs at low revs - Throttle is not fully open |
| Low cutting height - Use a higher cutting height |
| Mower deck drive belt installed incorrectly - Drive belt must be installed correctly |
| Mower leaving random uncut of grass |
| Discharge area is clogged - Clean mower deck as required |
| Blades are not sharp - Need a blade sharpening |
| Blades are defective or worn - Blades need to be replaced |
| High ground speed - Need to slow down |
| Cutting height is too low - Use correct cutting height |
| Filled bagger - Clean bagger |
| Blades are scalping the grass |
| Uneven or bumpy lawn - Lawn leveling required |
| Mower deck cutting height is set too low - Use correct cutting height |
| High ground speed - Operate at slower speed |
| Deck is not leveled correctly - Adjust mower deck level properly |
| Bent or worn blades - Replace the blades |
| Low tire inflation - Correct tire pressure |
| Low tire pressure - Correct tire pressure |
| Improperly leveled mower deck - Adjust the level of mower deck correctly |
| Blades are not sharp - Blades need to be sharpened |
| Damaged or worn blades - Blades need to be replaced |
| Discharge area is clogged - Inspect and clean cutting deck |
| Deck shell is broken - Replace or rebuild mower deck |
| Loose or defective mower spindle - Spindle needs to be repaired or replaced |
| Electrical Troubleshooting |
| Battery cannot be charged |
| Loose or corroded wire connections - Service or tighten cable connections |
| Faulty battery terminal clamps - Terminal clamps need to be replaced |
| Dead cell in battery - Battery change required |
| Low battery voltage - Battery is drained, recharge it |
| Battery runs out quickly - Service charging system or change battery |
| Corroded battery terminals or disconnected wires - Check wiring and clean or replace terminals |
| Battery is discharged or defective - Recharge or change battery |
| Disconnected or improperly connected wiring harness - Inspect battery wiring harness and connect as required |
| Low battery voltage - Battery is drained, charge it |
| Incorrectly gapped or worn spark plug - Clean, gap or replace spark plug |
| Faulty solenoid or starter motor - Repair starter or replace solenoid |
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| Lawn and Garden Tractors Technical Specs |
