Craftsman Lawn Tractor T100 Parts Manual

The Craftsman Lawn Tractor T100 is a reliable riding mower designed for residential lawn care. This parts manual provides detailed information on components, assembly, maintenance, and replacement parts for the T100 series. It covers the engine, cutting deck, drive system, electrical components, and safety features to assist with repairs and upkeep. Below are key sections for identification, specifications, parts diagrams, maintenance, and troubleshooting.

1. Model Identification & Specifications 2. Safety Information 3. Engine Components 4. Cutting Deck Assembly 5. Drive System & Transmission 6. Electrical System 7. Controls & Operator Station 8. Maintenance Schedule 9. Parts Diagrams & Numbers 10. Troubleshooting 11. Warranty & Support

Model Identification & Specifications

Locate the model and serial number plate on the frame near the rear axle or under the seat. Key specifications include engine type, cutting width, transmission, and dimensions.

Feature	Description
Model Series	T100 (e.g., 247.289XXX)
Engine	Briggs & Stratton or Kohler, 17.5-19.5 HP
Cutting Width	42 inches or 46 inches
Transmission	Hydrostatic or Gear Drive
Fuel Capacity	2.5 gallons
Cutting Height	1.5 to 4 inches (adjustable)
Turning Radius	Approx. 18 inches
Weight	Approx. 500 lbs
Battery	12V, 280 CCA
Tire Size (Front)	15x6.00-6

Safety Information

Always follow safety guidelines to prevent injury or damage.

Read manual before operation or maintenance.
Wear appropriate safety gear (gloves, eye protection).
Disconnect spark plug before servicing.
Operate on stable, level ground; avoid slopes over 15 degrees.
Keep hands and feet away from moving parts.

WARNING! Never remove safety shields or operate with damaged components. Keep bystanders away during use.

Engine Components

The T100 is equipped with a single-cylinder, 4-cycle air-cooled engine. Key parts include air filter, carburetor, spark plug, oil filter, and fuel pump.

Air Filter: Clean or replace every 25 hours; part # 123456X.
Spark Plug: Replace every 100 hours; gap 0.030 inches.
Oil Filter: Replace every 50 hours; part # 789012Y.
Fuel Filter: Inline type; replace annually.
Carburetor: Adjust idle and mixture as needed.

CAUTION! Allow engine to cool before servicing. Use recommended oil (SAE 30).

Cutting Deck Assembly

Deck Material: 12-gauge steel.
Blades: 3 high-lift blades; part # 345678Z.
Spindles: Greaseable bearings; inspect for wear.
Belt: Deck drive belt; part # 901234A.
Height Adjustment: Lever-operated, 6 positions.
Discharge: Side or mulching option.
Anti-scalp Rollers: Prevent deck contact with ground.

Drive System & Transmission

Hydrostatic transmission (model-specific) with drive belt and pulleys. Components include drive belt, transmission filter, and axle.

Drive Belt: Replace if cracked; part # 567890B. Transmission Filter: Change fluid and filter every 200 hours. Axle: Grease fittings at rear axle.

Maintenance: Check fluid level; use recommended hydrostatic fluid. Adjust brake if needed.

Electrical System

12V system with battery, starter, alternator, and safety switches.

Battery: Maintain charge; clean terminals.
Starter Solenoid: Test if engine doesn't crank.
Safety Switches: Seat, brake, and PTO switches.
Fuses: 20A main fuse near battery.
Wiring Harness: Inspect for damage.

Tip: Use multimeter to test voltage; ensure all connections are tight and corrosion-free.

Controls & Operator Station

Includes steering wheel, seat, pedals, and control panel.

Steering: Check tie rods and wheel alignment.
Seat: Adjust for operator comfort; safety switch underneath.
Pedals: Brake and clutch (if gear drive).
Control Panel: Ignition key, PTO engage, throttle, choke.
Parking Brake: Engage when stopped on incline.

WARNING! Ensure all controls function properly before each use. Replace worn components immediately.

Maintenance Schedule

Regular maintenance ensures longevity and performance.

Interval	Task
Every 8 hours	Check tire pressure; inspect for debris
Every 25 hours	Clean air filter; grease fittings
Every 50 hours	Change oil and filter; sharpen blades
Every 100 hours	Replace spark plug; check belt tension
Every 200 hours	Change transmission fluid; inspect spindles
Annually	Replace fuel filter; battery check

Parts Diagrams & Numbers

Refer to diagrams for part identification and ordering.

Engine Diagram: Includes piston, crankshaft, gaskets. Deck Diagram: Shows blades, spindles, belts. Transmission Diagram: Details hydrostatic unit. Electrical Diagram: Wiring schematic.

Order parts using exact part numbers from diagrams. Contact authorized dealer or use online parts lookup.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Dead battery, bad spark plug, fuel issue	Charge battery; replace spark plug; check fuel flow.
Poor cutting performance	Dull blades, low engine RPM, clogged deck	Sharpen blades; adjust throttle; clean deck.
Loss of power	Clogged air filter, old fuel, drive belt slip	Clean/replace air filter; use fresh fuel; adjust belt.
Hydrostatic transmission issues	Low fluid, worn belt, linkage adjustment	Check fluid level; replace belt; adjust linkage.
Electrical failure	Blown fuse, corroded terminals, bad switch	Replace fuse; clean terminals; test switches.

Reset: Disconnect battery for 5 minutes to reset electrical system if needed.

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

Warranty & Support

Limited warranty covers defects in materials/workmanship for 2 years from purchase. Keep receipt for proof. Warranty does not cover normal wear, misuse, or lack of maintenance. For parts and service, contact authorized Craftsman dealers or visit the support website.