Craftsman T140 Parts Manual

The Craftsman T140 is a riding lawn mower featuring a 14 HP engine, 42-inch cutting deck, hydrostatic transmission, electric start, and mulching/bagging/side discharge capabilities. This manual provides detailed parts identification, diagrams, ordering information, and maintenance guidance to ensure proper operation and longevity of your equipment. Below are key sections for parts overview, engine components, deck assembly, drive system, electrical system, maintenance, and troubleshooting.

1. Parts Overview & Diagrams 2. Engine Components 3. Cutting Deck Assembly 4. Drive & Transmission 5. Electrical System 6. Controls & Safety Features 7. Maintenance Schedule 8. Replacement Parts Guide 9. Assembly Instructions 10. Warranty Information 11. Troubleshooting

Parts Overview & Diagrams

Key assemblies: Engine, Cutting Deck, Transmission, Frame, Seat, Controls, Electrical.

Assembly	Key Parts
Engine	Cylinder, Piston, Carburetor, Air Filter, Spark Plug, Oil Filter
Cutting Deck	Blades, Spindles, Belt, Deck Shell, Discharge Chute
Transmission	Hydrostatic Pump, Drive Belt, Axle, Pulleys
Frame	Chassis, Front Axle, Steering Linkage, Wheels
Controls	Ignition Switch, Throttle, Brake Pedal, Blade Engage Lever
Electrical	Battery, Starter, Alternator, Wiring Harness, Fuses
Seat	Seat Cushion, Mounting Bracket, Springs
Fuel System	Fuel Tank, Fuel Lines, Fuel Filter, Fuel Pump
Safety Features	Seat Switch, Blade Brake Clutch, Safety Interlock System
Attachments	Bagging System, Mulching Kit, Tow Hitch

Engine Components

14 HP OHV (Overhead Valve) Engine - Parts Identification and Specifications.

Cylinder & Piston: Part # 123456-01 - Cast iron sleeve, standard bore.
Carburetor: Part # 123456-02 - Includes gasket and fuel solenoid.
Air Filter: Part # 123456-03 - Dual-stage foam and paper element.
Spark Plug: Part # 123456-04 - Champion RC12YC, gap 0.030".
Oil Filter: Part # 123456-05 - Spin-on type, replace every 50 hours.
Starter Motor: Part # 123456-06 - 12V electric start.
Fuel Pump: Part # 123456-07 - Mechanical pulse type.

WARNING! Always disconnect spark plug wire before servicing engine components. Ensure engine is cool.

Cutting Deck Assembly

42-inch stamped steel deck with three blades.

Blades: Part # 123456-08 (set of 3) - High-lift, 18.5" length.
Spindle Assemblies: Part # 123456-09 - Includes bearings and housing.
Deck Belt: Part # 123456-10 - ½" x 95" V-belt.
Deck Shell: Part # 123456-11 - Main deck body.
Discharge Chute: Part # 123456-12 - Removable for bagging/mulching.
Deck Wheels: Part # 123456-13 - Anti-scalp rollers.
Blade Engagement Cable: Part # 123456-14 - Controls PTO clutch.

CAUTION! Ensure deck is properly leveled. Always wear gloves when handling blades.

Drive & Transmission

Transmission Type: Hydrostatic, single-speed range.
Drive Belt: Part # 123456-15 - ½" x 72".
Hydrostatic Pump: Part # 123456-16 - Serviceable unit.
Axle: Part # 123456-17 - 1" diameter solid steel.
Pulleys: Part # 123456-18 (engine), 123456-19 (transmission).
Drive Shaft: Part # 123456-20 - Connects engine to transmission.
Brake Assembly: Part # 123456-21 - Disc brake on transmission.
Transmission Fluid: 20W-50 motor oil (48 oz capacity).

Electrical System

12V system with battery, starter, and charging circuit.

Components: Battery (12V, 280 CCA), Starter Solenoid, Ignition Switch, Seat Safety Switch, Blade Engagement Switch, Wiring Harness, Fuses (20A main).

Diagram: Battery positive to solenoid, solenoid to starter, ignition switch to safety interlock circuit, alternator charging circuit (10A output).

Controls & Safety Features

Steering Wheel, Ignition Key, Throttle/Choke Lever, Brake Pedal, Blade Engage Lever, Height Adjustment Lever.

Turn ignition key to start (must be in seat with brake engaged).
Set throttle to full for starting, then adjust to desired speed.
Engage blades only when seated and in neutral.
Adjust cutting height from 1.5" to 4".

Tip: Test safety interlock system monthly. Ensure all switches function properly.

Maintenance Schedule

Supports long engine and deck life with regular maintenance.

Before each use: Check tire pressure, blade condition, fluid levels.
Every 8 hours: Clean deck underside, check belts for wear.
Every 25 hours: Change engine oil, check air filter, grease fittings.
Every 50 hours: Replace oil filter, spark plug, sharpen blades.
Every 100 hours: Check transmission fluid, replace fuel filter.
Seasonal: Stabilize fuel, store properly, battery maintenance.
Blade sharpening: Maintain 30-degree cutting edge balance.
Belt replacement: Inspect for cracks and fraying.

WARNING! Always use genuine Craftsman parts for replacement. Follow torque specifications.

Replacement Parts Guide

Order parts using model number (917.289xxx) and part numbers listed.

Assembly Instructions

Unpack and assemble steering wheel, seat, battery, deck.

CAUTION! Use proper tools. Tighten all bolts to specified torque. Check for loose parts before operation.

Warranty Information

Limited 2-year warranty on frame, 1-year on engine and transmission. Copyright © 2025 Craftsman; trademarks of Stanley Black & Decker. For support, visit www.craftsman.com or contact 1-888-331-4569. Keep receipt for warranty claims.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Battery/safety switches	Check battery charge; ensure brake engaged and seat occupied; check spark plug.
Poor cutting performance	Dull blades/deck level	Sharpen or replace blades; level deck; check belt tension.
Transmission slips	Low fluid/drive belt	Check transmission fluid level; inspect drive belt for wear.
Excessive vibration	Unbalanced blades	Remove and balance blades; check spindle bearings.
Battery not charging	Alternator/connections	Test alternator output; clean battery terminals; check wiring.

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

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