Husqvarna YT42DXLS Parts Manual

The Husqvarna YT42DXLS is a 42-inch riding lawn mower featuring a powerful engine, hydrostatic transmission, and durable cutting deck. This parts manual provides detailed diagrams, part numbers, and ordering information for all major components including the engine, transmission, cutting system, electrical system, controls, and chassis. Below are key sections for identification, engine parts, deck assembly, drive system, electrical components, and maintenance.

Model Identification & Specifications

Locate the model and serial number plate on the frame near the rear right wheel. Key specifications for the YT42DXLS.

Engine Components

Detailed parts list for the engine assembly, including air filter, carburetor, ignition, and cooling system.

1. Cylinder & Piston: Piston rings, connecting rod, gaskets.
2. Fuel System: Fuel pump, carburetor kit, fuel lines, fuel filter.
3. Ignition System: Spark plug, ignition coil, flywheel key.
4. Air Intake: Air filter element, pre-cleaner, housing.
5. Exhaust: Muffler, exhaust gasket, heat shield.
6. Lubrication: Oil filter, dipstick, drain plug.

WARNING! Disconnect spark plug wire before servicing engine. Use genuine Husqvarna parts for optimal performance.

Cutting Deck Assembly

Parts for the 42-inch cutting deck: blades, spindles, belt, and mounting hardware.

1. Blades: Mulching or high-lift blades (part #532404963).
2. Spindle Assembly: Includes bearings, housing, pulley, and shaft.
3. Deck Belt: Drive belt for deck engagement (part #532404964).
4. Deck Shell: Main deck housing, skid shoes, and brackets.
5. Deck Lift: Lift arms, linkage, and adjustment components.
6. Mandrel: Complete spindle assembly with seals.

CAUTION! Ensure deck is securely supported and blades are stopped before servicing.

Drive & Transmission System

• Hydrostatic Transmission: Complete unit, filter, and fluid.
• Drive Belt: Main drive belt (part #532404965).
• Pulleys: Idler pulleys, drive pulleys, and tensioners.
• Axle & Differential: Rear axle assembly, gears, and seals.
• Brakes: Brake pads, rotor, and caliper assembly.
• Control Linkage: Speed control rod, springs, and bushings.

Electrical System Parts

Battery, wiring harness, switches, and safety components.

Key Components: Battery (12V, group U1), starter motor, solenoid, ignition switch, safety interlock switches, headlight assembly, fuses (20A), voltage regulator, and charging system.

Wiring: Main harness (part #532404966), connector kits, ground cables. Lighting: Headlight bulb (12V 35W), tail light if equipped. Safety: Seat switch, brake switch, PTO switch.

Controls & Operator Station

Steering, seat, and control panel parts.

1. Steering Wheel: Wheel, column, and tie rods.
2. Seat: Seat cushion, suspension, and mounting brackets.
3. Control Panel: Dash panel, gauges, and indicator lights.
4. Pedals: Brake pedal, clutch/brake assembly, and return springs.
5. Levers: PTO engagement lever, height adjustment lever.

Tip: Lubricate control linkages periodically for smooth operation.

Chassis, Frame & Wheels

Frame components, wheels, tires, and suspension.

1. Frame: Main frame, reinforcement brackets, and mounting points.
2. Front Axle: Axle beam, spindle, and kingpins.
3. Wheels & Tires: Front (15x6.00-6) and rear (20x10.00-8) tires, rims, and valve stems.
4. Hub & Bearings: Wheel bearings, seals, and hub assemblies.
5. Fenders: Rear fenders and mounting hardware.
6. Grille & Hood: Front grille, hood, and latches.

WARNING! Always use jack stands when lifting the mower. Ensure tires are properly inflated.

Belts, Pulleys & Spindles

Replacement belts and pulley systems for deck and drive.

Fasteners & Hardware

Bolts, nuts, washers, and pins used throughout the mower.

Common hardware: Grade 5 and 8 bolts, lock nuts, flange bolts, shoulder bolts, cotter pins, hairpin clips, and retaining rings. Deck hardware: Blade bolts (5/8" fine thread), spindle nuts, and carriage bolts. Frame hardware: 3/8" and 1/2" bolts with lock washers.

CAUTION! Always replace hardware with equivalent grade and size. Do not reuse damaged fasteners.

Maintenance & Lubrication

Recommended maintenance parts and lubricants.

• Engine Oil: SAE 30 or 10W-30 (approx. 2 quarts).
• Oil Filter: Spin-on filter (part #492932S).
• Air Filter: Dual-element (part #532404970).
• Fuel Filter: In-line filter (part #532404971).
• Hydrostatic Fluid: 20W-50 or equivalent (approx. 3 quarts).
• Grease: Lithium-based multi-purpose grease for fittings.
• Spark Plug: Champion RC12YC or equivalent.

Parts Ordering & Support

Note: Always provide model YT42DXLS and serial number when ordering parts.

Service: 1-800-487-5962; www.husqvarna.com