Craftsman LT1000 Lawn Mower Parts Manual

The Craftsman LT1000 is a popular 42-inch riding lawn mower with a 17.5 HP Briggs & Stratton engine, hydrostatic transmission, and durable steel deck. This parts manual provides detailed diagrams, part numbers, and ordering information for maintenance, repair, and replacement of components. Below are key sections covering identification, engine parts, deck assembly, drive system, electrical, controls, and troubleshooting.

1. Model Identification & Specifications 2. Engine Components & Parts 3. Cutting Deck Assembly 4. Drive System & Transmission 5. Electrical System & Wiring 6. Controls & Operator Station 7. Frame, Wheels & Tires 8. Maintenance Schedule 9. Parts Ordering Information 10. Safety Precautions 11. Troubleshooting & Common Issues

Model Identification & Specifications

Locate your model and serial number on the frame under the seat or on the engine housing to ensure correct parts ordering.

Feature	Description
Model Series	Craftsman LT1000
Engine	17.5 HP Briggs & Stratton Intek OHV
Cutting Width	42 inches
Transmission	Hydrostatic, single-speed
Deck Material	12-gauge steel
Fuel Capacity	2.5 gallons
Oil Capacity	48 oz (1.5 quarts)
Battery	12V, 280 CCA
Weight	Approx. 500 lbs
Wheel Size (Front/Rear)	15x6.00-6 / 20x10.00-8

Engine Components & Parts

Key engine parts for the 17.5 HP Briggs & Stratton engine (Model 31C707).

Air Filter: Replaceable paper element (Part # 492932S).
Spark Plug: Champion RC12YC (gap 0.030 inch).
Oil Filter: Briggs & Stratton 492932S (spin-on type).
Fuel Filter: In-line filter (Part # 808656).
Carburetor Kit: Includes gaskets and jets (Part # 694373).
Starter Motor: 12V electric starter (Part # 109946).
Muffler: Standard exhaust assembly (Part # 693537).

WARNING! Disconnect spark plug wire before servicing engine. Allow engine to cool.

Cutting Deck Assembly

42-inch stamped steel deck with three spindle assemblies.

Blades: Mulching/blade set (Part # 134149) - replace in sets.
Spindle Assembly: Includes bearing and pulley (Part # 132926).
Deck Belt: ½" x 95.5" (Part # 144959).
Deck Wheels: Anti-scalp rollers (Part # 132927).
Deck Hanger: Lift linkage (Part # 132928).
Belt Idler Pulley: Spring-loaded (Part # 132929).

CAUTION! Ensure deck is fully lowered and engine off before blade replacement.

Drive System & Transmission

Transmission: Hydrostatic, sealed unit (Part # 132930).
Drive Belt: ½" x 78" (Part # 144960).
Drive Pulley: Engine PTO pulley (Part # 132931).
Axle: Rear axle assembly (Part # 132932).
Brake: Disc brake kit (Part # 132933).
Hydrostatic Linkage: Control rod and lever (Part # 132934).

Electrical System & Wiring

12V system with key start, safety interlock.

Key Components: Battery (12V, Group U1), Starter Solenoid (Part # 109947), Ignition Switch (Part # 725-0456), Voltage Regulator (Part # 394358), Wiring Harness (Part # 132935).

Fuses: 20A blade fuse in-line. Lights: Optional headlight kit (Part # 132936).

Controls & Operator Station

Seat, steering, and control components.

Seat: High-back with suspension (Part # 132937).
Steering Wheel: 13-inch diameter (Part # 132938).
Control Panel: Includes ignition, choke, throttle (Part # 132939).
Blade Engage Lever: Electric PTO switch (Part # 132940).
Parking Brake Lever: Manual engage (Part # 132941).

Tip: Lubricate control linkages annually with white lithium grease.

Frame, Wheels & Tires

Supports front and rear axle assemblies.

Front Axle: Pivoting assembly (Part # 132942).
Front Tires: 15x6.00-6 turf tires (Part # 132943).
Rear Tires: 20x10.00-8 turf tires (Part # 132944).
Wheel Bearings: Sealed cartridge (Part # 132945).
Frame Reinforcement: Crossmember brace (Part # 132946).

WARNING! Check tire pressure monthly (12 PSI front, 10 PSI rear).

Maintenance Schedule

Regular maintenance ensures longevity.

Interval	Task	Parts Needed
Every 25 hours	Check tire pressure, blade sharpness	N/A
Every 50 hours	Change engine oil, replace oil filter	Oil filter (492932S), SAE 30 oil
Every 100 hours	Replace air filter, spark plug	Air filter (492932S), Spark plug (RC12YC)
Annually	Replace fuel filter, deck belt inspection	Fuel filter (808656), Deck belt (144959)
Seasonal	Grease fittings, battery check	Lithium grease, battery terminal cleaner

Parts Ordering Information

Use genuine Craftsman parts for optimal performance.

Ordering: Visit www.craftsman.com or call 1-888-331-4569 with model and serial number. Provide part numbers from this manual.

Warranty: Most parts have 1-year limited warranty. Keep receipt.

Safety Precautions

Always follow safety guidelines when servicing.

Disconnect spark plug before any maintenance.
Use jack stands if lifting mower.
Wear safety glasses and gloves.
Work in well-ventilated area when handling fuel.
Keep hands and feet away from moving parts.

CAUTION! Gasoline is flammable; no smoking near mower.

Troubleshooting & Common Issues

Symptom	Possible Cause	Corrective Action
Engine won't start	Dead battery, faulty spark plug	Charge/replace battery; check spark plug gap and connection.
Poor cutting performance	Dull blades, worn deck belt	Sharpen or replace blades; inspect and replace deck belt if cracked.
Hydrostatic transmission slips	Low fluid, worn drive belt	Check transmission fluid level; replace drive belt (Part # 144960).
Excessive vibration	Unbalanced blade, loose spindle	Balance or replace blade; tighten spindle bolts to 35 ft-lbs.
Battery not charging	Faulty voltage regulator	Test regulator (Part # 394358); replace if output below 13.5V.

Service Support: 1-888-331-4569; www.craftsman.com