Craftsman T100 Parts Manual

The Craftsman T100 is a versatile lawn tractor designed for residential use, featuring a durable engine, hydrostatic transmission, and a range of cutting deck options. This manual provides comprehensive parts identification, diagrams, ordering information, and maintenance guidance to ensure proper assembly, repair, and long-term operation of your T100 tractor. Below are key sections covering parts overview, diagrams, ordering, maintenance, and troubleshooting.

1. Parts Overview & Identification 2. Engine Components 3. Drive & Transmission Parts 4. Cutting Deck Assembly 5. Electrical System Parts 6. Controls & Operator Station 7. Frame & Body Components 8. Maintenance Parts & Kits 9. Parts Ordering Information 10. Assembly Instructions 11. Troubleshooting & Replacement Guides

Parts Overview & Identification

Key components: Engine assembly, Hydrostatic transmission, Cutting deck (42" or 46"), Drive belt, Blade spindle assemblies, Electrical harness, Control panel, Seat, Wheels and tires.

Part Category	Description
Engine Assembly	Includes cylinder, piston, carburetor, air filter, oil filter
Transmission	Hydrostatic drive unit with pump and motor
Cutting Deck	Deck shell, blades, spindle housings, belt guards
Drive System	Drive belt, idler pulleys, tensioner
Electrical	Battery, starter, ignition switch, wiring harness
Controls	Steering wheel, brake pedal, throttle, PTO lever
Frame	Main chassis, front axle, rear axle
Body	Hood, fenders, seat, footrests
Wheels	Front and rear wheels, tires, hubs
Maintenance Kits	Oil change kit, air filter kit, blade sharpening kit

Engine Components

Engine model varies; common is Briggs & Stratton or Kohler single-cylinder.

Cylinder Head: Includes valves, springs, rocker arms.
Piston & Connecting Rod: Piston rings, wrist pin, rod bearings.
Carburetor: Fuel bowl, jets, gaskets.
Air Filter: Paper element with housing.
Oil Filter: Spin-on type; replace with every oil change.
Ignition System: Spark plug, coil, flywheel.

WARNING! Disconnect spark plug before servicing engine. Use proper tools.

Drive & Transmission Parts

Hydrostatic transmission provides infinite speed control.

Transmission Unit: Pump, motor, fluid reservoir.
Drive Belt: V-belt connecting engine to transmission.
Idler Pulleys: Tension and guide belts.
Axles: Front steerable axle; rear solid axle.
Brakes: Disc or drum brake assembly.

CAUTION! Transmission fluid hot after operation; allow to cool before servicing.

Cutting Deck Assembly

Deck Shell: Fabricated steel, powder-coated.
Blades: High-lift mulching blades (replace when worn).
Spindle Assemblies: Housing, bearings, pulley.
Belt: Deck drive belt; check for wear.
Guards: Belt guard, discharge chute.
Lift Mechanism: Lift lever, linkage, springs.

Electrical System Parts

12-volt system with battery, starter, and safety switches.

Battery: 12V, group U1 size. Starter: Electric starter motor. Ignition Switch: Key-operated. Safety Switches: Seat, brake, PTO. Wiring Harness: Color-coded connectors.

Fuses: 20-amp main fuse. Lights: Headlights optional. Charging: Alternator charges battery.

Controls & Operator Station

Steering wheel, pedals, levers, seat, and instrument panel.

Turn off engine before adjusting controls.
Check for smooth operation of steering and pedals.
Adjust seat position for comfort and safety.

Tip: Lubricate control linkages periodically.

Frame & Body Components

Frame: Welded steel construction. Hood: Plastic, may include grille. Fenders: Steel, cover rear tires. Seat: High-back with suspension. Footrests: Rubber mats.

Inspect frame for cracks or damage.
Secure all body fasteners.
Clean debris from under hood.

WARNING! Ensure frame is stable before lifting or supporting tractor.

Maintenance Parts & Kits

Oil Change Kit: Includes oil filter, drain plug gasket. Air Filter Kit: Pre-filter and main element. Spark Plug: Standard resistor type. Blades: Set of two or three. Belts: Drive and deck belts.

Parts Ordering Information

Use model and serial number (located on frame) when ordering. Contact authorized Craftsman dealer or visit www.craftsman.com. Have part number from diagram ready.

CAUTION! Use only genuine Craftsman parts for warranty and safety.

Assembly Instructions

For new tractor assembly or major component replacement.

Uncrate and inspect all parts.
Install steering wheel and connect linkage.
Mount seat and adjust tension.
Install cutting deck: align with lift arms, attach belt.
Connect battery; check electrical functions.
Add fluids: engine oil, transmission fluid, fuel.
Test operation in safe area.

WARNING! Follow torque specifications for fasteners.

Troubleshooting & Replacement Guides

Symptom	Possible Cause	Corrective Action
Engine won't start	Battery, fuel, spark	Check battery charge; ensure fuel valve on; inspect spark plug.
Poor cutting performance	Dull blades, belt slip	Sharpen or replace blades; adjust belt tension.
Transmission slips	Low fluid, worn belt	Check fluid level; inspect drive belt for wear.
Excessive vibration	Unbalanced blade, loose parts	Balance blade; tighten spindle bolts and deck mounts.
Electrical failure	Blown fuse, bad connection	Replace fuse; check wiring harness connections.

Reset: Refer to engine manual for reset procedures if equipped.

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