Husqvarna ST224 Parts Manual

The Husqvarna ST224 is a 2-stage snow thrower designed for reliable winter performance. This manual provides detailed parts identification, exploded diagrams, and ordering information for the engine, auger assembly, drive system, chute controls, belts, cables, and other components to assist with maintenance and repair. Below are key sections for parts overview, assembly diagrams, specifications, ordering, and troubleshooting.

Parts Overview & Identification

Key assemblies: Engine (Briggs & Stratton or equivalent), Auger Housing, Impeller, Drive System, Control Cables, Chute Assembly, Skid Shoes, Scraper Bar.

Engine Assembly Parts

Engine model varies; common parts include:

1. Recoil starter assembly: Starter rope, pulley, spring.
2. Carburetor and fuel system: Fuel tank, fuel line, filter, carburetor gasket.
3. Air filter: Foam and/or paper element.
4. Spark plug: Standard replacement type.
5. Muffler and exhaust guard.
6. Oil drain plug and dipstick.

WARNING! Disconnect spark plug before servicing engine. Use correct fuel/oil.

Auger & Impeller Assembly

Auger housing contains auger blades and impeller.

1. Auger blades: Left-hand and right-hand blades (paddles).
2. Auger shaft: Hex shaft with bearings and retaining hardware.
3. Shear pins/bolts: Replace if auger is jammed (shear protection).
4. Impeller: Fan blades mounted on impeller shaft.
5. Impeller bearings: Support impeller shaft rotation.
6. Auger belt: Drives auger assembly from engine.

CAUTION! Always replace shear pins with identical spec pins. Ensure auger rotates freely.

Drive & Transmission System

• Drive wheels: Traction tires on axles.
• Axles: Left and right axles with cotter pins.
• Friction disc: Engages drive via control lever.
• Drive belt: V-belt from engine to transmission.
• Drive control cable: Connects lever to transmission.
• Transmission: Gear case (sealed unit).

Chute & Control Assembly

Chute directs snow discharge. Controlled by crank and cable.

Components: Discharge chute, chute deflector (adjustable), chute rotation gear/crank, chute control cable, cable clamps.

Operation: Rotate crank to turn chute left/right. Adjust deflector lever for discharge angle.

Belts, Cables & Hardware

Belts: Auger drive belt, impeller drive belt. Cables: Drive control cable, chute control cable.

1. Inspect belts for wear/cracks; replace if damaged.
2. Adjust cables for proper control engagement.
3. Hardware: Use provided bolt/nut sizes for reassembly.

Tip: Note routing of belts and cables during replacement; refer to diagram.

Specifications

ST224 specific parts dimensions and materials.

1. Auger width: 24 inches.
2. Auger blade material: Steel paddles.
3. Shear pin diameter: 1/4 inch (typical).
4. Belt sizes: Auger belt (length/width), drive belt.
5. Skid shoe adjustment range: 1/2 inch to 1-1/2 inch.
6. Chute rotation: 200 degrees (approximate).
7. Hardware: Metric and SAE bolts used.

WARNING! Use only Husqvarna-approved replacement parts for safety and warranty.

Parts Ordering Information

Order parts via Husqvarna dealer or online with model ST224 and part number.

Assembly & Installation Notes

Refer to exploded diagrams for part orientation. Tighten hardware to specified torque.

CAUTION! Do not overtighten shear bolts. Ensure belts are properly tensioned.

Safety Information

Wear gloves and eye protection. Disconnect spark plug. Use correct tools. Keep parts clean.

Troubleshooting & Parts Replacement

Replacement Tips: Match part numbers exactly. Keep old parts for comparison.

Support: Contact Husqvarna dealer or visit www.husqvarna.com for parts lookup.