The Husqvarna MZ52 is a 52-inch zero-turn riding mower designed for commercial and residential use, featuring a powerful engine, durable cutting deck, hydrostatic transmission, ergonomic controls, and high-capacity collection system. This manual provides detailed parts identification, diagrams, ordering information, maintenance schedules, and safety guidelines to ensure proper operation and longevity of your mower.
This parts manual is intended for technicians and owners to identify, order, and replace components of the Husqvarna MZ52. Always follow safety protocols when handling parts.
| Safety Symbol | Meaning |
|---|---|
| ⚠️ | Warning - Risk of injury or component damage |
| 🔧 | Tools required - Use specified tools for installation |
| 📋 | Reference - Refer to service manual for procedures |
| 🔌 | Electrical safety - Disconnect battery before servicing |
WARNING! Always disconnect spark plug and battery before replacing parts. Use genuine Husqvarna parts only.
Refer to exploded-view diagrams for part numbers and locations.
Note: Part numbers are subject to change; verify with dealer before ordering.
The MZ52 is equipped with a commercial-grade engine (model varies). Key replaceable parts:
CAUTION! Use only specified engine oil and fuel type to avoid damage.
52-inch fabricated steel deck with three blades. Key parts:
| Part | Part Number | Description |
|---|---|---|
| Blade (Standard) | 532XXXXXX | High-lift, 18-inch length |
| Spindle Assembly | 532XXXXXX | Includes bearings and pulley |
| Deck Belt | 532XXXXXX | ½-inch x 125-inch |
| Deck Wheel | 532XXXXXX | 8-inch anti-scalp |
| Blade Bolt Kit | 532XXXXXX | Includes lock washers |
Tip: Inspect blades for damage every 25 hours; replace in sets for balance.
Hydrostatic zero-turn transmission with dual pumps and wheel motors.
WARNING! Transmission fluid must meet specifications; improper fluid voids warranty.
Ergonomic control panel with key switch, hour meter, and safety interlocks.
Key Parts: Ignition Switch (Part # 532XXXXXX), Seat Switch (Part # 532XXXXXX), PTO Switch (Part # 532XXXXXX), Hour Meter (Part # 532XXXXXX), Wiring Harness (Part # 532XXXXXX), Battery (12V, 300 CCA).
Electrical Diagram: Refer to Diagram 5-1 for wire colors and connections.
Recommended replacement intervals for common wear parts.
| Part | Interval (Hours) | Part Number |
|---|---|---|
| Engine Oil | 50 | As per engine manual |
| Oil Filter | 100 | 532XXXXXX |
| Air Filter | 100 | 532XXXXXX |
| Spark Plug | 100 | 532XXXXXX |
| Fuel Filter | 200 | 532XXXXXX |
| Deck Belt | 300 | 532XXXXXX |
| Blades | As needed | 532XXXXXX |
Note: Intervals may vary based on operating conditions.
Common parts-related problems and solutions.
| Symptom | Possible Faulty Part | Part Number |
|---|---|---|
| Engine won't start | Spark plug, Fuel filter | 532XXXXXX, 532XXXXXX |
| Uneven cutting | Worn blades, Deck belt | 532XXXXXX, 532XXXXXX |
| Loss of drive power | Drive belt, Transmission | 532XXXXXX, 532XXXXXX |
| Excessive vibration | Bent blade, Spindle | 532XXXXXX, 532XXXXXX |
| Electrical failure | Battery, Wiring harness | 12V 300 CCA, 532XXXXXX |
Reset: Check all safety switches and connections before replacing parts.
Always use genuine Husqvarna parts to ensure compatibility and warranty coverage.
Support: 1-800-487-5962; www.husqvarna.com
Husqvarna MZ52 includes limited warranty covering defects in materials/workmanship. Using non-genuine parts may void warranty. Keep purchase receipt and register product online.
Commercial Warranty: 3 years or 500 hours (whichever comes first) on cutting deck; 2 years/500 hours on transmission; 1 year/unlimited hours on other components.
Residential Warranty: Varies by region; check local dealer.
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