Husqvarna GT48XLSi Parts Manual

The Husqvarna GT48XLSi is a 48-inch riding lawn tractor featuring a powerful engine, hydrostatic transmission, electric PTO engagement, and a heavy-duty cutting deck. This manual provides detailed parts diagrams, part numbers, and ordering information for maintenance and repair. Below are key sections covering safety, identification, major assemblies, and replacement parts.

Identification & Specifications

Locate your model and serial number on the frame plate behind the front grille or under the seat. This information is required for ordering correct parts.

Safety Parts & Labels

Critical safety components and warning decals must be maintained and replaced if damaged or illegible.

1. Blade Engagement Warning Decals: Located on dash and deck.
2. Seat Safety Switch: Prevents operation without operator present.
3. Reverse Operation System (ROS) Module: Allows mowing in reverse when enabled.
4. PTO Clutch Shield: Protects against debris and contact.
5. Rollover Protection System (ROPS) Labels (if equipped).

WARNING! Never operate with missing or damaged safety parts. Replace immediately.

Engine Assembly & Components

Parts for the Kawasaki FR Series V-Twin engine, including air filter, oil filter, spark plugs, fuel pump, and carburetor.

1. Air Filter Element: Part # 532XXXXXX.
2. Oil Filter: Part # 490XXXXXX.
3. Spark Plugs: NGK BPR5ES (2 required).
4. Fuel Filter: In-line type, replace annually.
5. Starter Motor & Solenoid.
6. Muffler & Exhaust Guard.

CAUTION! Disconnect spark plug wires before servicing engine.

Drive System & Transmission

• Hydrostatic Pump: Tuff Torq K66 series.
• Drive Belt: 95-inch, 1/2-inch width.
• Idler Pulleys: Tensioner and deck drive.
• Axle & Differential: Heavy-duty rear axle assembly.
• Brake Pads: Disc brake, left and right.
• Parking Brake Cable: Adjustable.

Cutting Deck & Blades

48-inch stamped steel deck with three spindle assemblies. Includes blade mandrels, belts, and anti-scalp rollers.

Blades: Mulching or high-lift, 18-inch length, 5/8-inch center hole. Part # 539XXXXXX (set of 3).

Deck Belt: 144-inch, 1/2-inch width. Part # 532XXXXXX. Spindle Assembly: Includes bearing housing, pulley, and seal kit. Part # 591XXXXXX each. Deck Wheels & Height Adjustment Rods.

Electrical System

Battery: 12V, 300 CCA. Fuses: 20A main, 10A PTO. Key Switch: 5-position. PTO Clutch: Electric, 12V. Wiring Harness: Main and deck sub-harness.

1. Turn off engine and remove key before servicing electrical parts.
2. Check fuses first if electrical components fail.
3. Ensure battery terminals are clean and tight.

Tip: Use dielectric grease on connectors to prevent corrosion.

Controls & Operator Station

Steering Wheel, Seat & Suspension, Dashboard Panel, Throttle/Choke Controls, Hydrostatic Drive Pedals, Blade Engagement Lever, Ignition Switch, Hour Meter, Cup Holder.

1. Seat: High-back, suspension type. Part # 530XXXXXX.
2. Steering Wheel: 13-inch diameter with grip.
3. Control Cables: Throttle, choke, and deck lift.
4. Dashboard Decals: Function labels.

WARNING! Ensure all controls move freely without binding.

Frame & Body Panels

Hood, Grille, Fenders, Footrests, Battery Cover, Deck Shell, Chassis Frame.

Wheels, Tires & Steering

Front Tires: 15x6.00-6, smooth tread. Rear Tires: 20x10.00-8, lug tread. Rims: Steel. Tie Rods & Drag Links. Steering Gear: Rack and pinion.

CAUTION! Maintain correct tire pressure: 12 PSI front, 10 PSI rear.

Fasteners & Hardware

Bolts, Nuts, Washers, Pins, Clips specific to model. Refer to diagrams for exact sizes and quantities.

Note: Use only Husqvarna-approved hardware for critical connections.

Parts Ordering & Support

Online Resources: Parts diagrams available at www.husqvarnaparts.com.

Service: For repairs beyond your skill level, contact an authorized service center.