Husqvarna MZ52 Parts Manual

The Husqvarna MZ52 is a 52-inch zero-turn riding mower designed for residential and commercial use, featuring a powerful engine, durable cutting deck, hydrostatic transmission, and ergonomic controls. This manual provides detailed parts identification, diagrams, ordering information, and maintenance guidelines to ensure proper assembly, operation, and longevity of your mower. Below are key sections covering parts overview, diagrams, maintenance, ordering, and safety.

Parts Overview & Identification

Key components: Engine assembly, Cutting deck, Drive system, Control levers, Seat, Frame, Wheels.

Part Category	Description
Engine Assembly	Includes engine, air filter, fuel system, ignition components
Cutting Deck	52-inch welded steel deck with blade spindles, belts, and guards
Drive System	Hydrostatic transmission, drive belts, pulleys, and axles
Control Levers	Steering and speed control levers with linkages
Operator Station	Seat, seat switch, control panel, and safety components
Frame & Body	Main frame, fenders, footrests, and mounting brackets
Wheels & Tires	Front and rear wheels, tires, and hub assemblies
Electrical System	Battery, wiring harness, switches, and lights
Maintenance Kits	Filter kits, blade sets, belt kits, and lubrication packages
Fasteners & Hardware	Bolts, nuts, washers, pins, and clips

Engine Components

Detailed parts list for the engine assembly.

1. Engine Model: [Specify engine model, e.g., Kawasaki FR691V].
2. Air Filter: Replaceable paper element with pre-cleaner.
3. Fuel System: Fuel pump, carburetor, fuel lines, and tank.
4. Ignition: Spark plugs, ignition coil, and wiring.
5. Cooling System: Cooling fins, fan, and shrouds.
6. Exhaust: Muffler and exhaust pipe.

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

Cutting Deck & Blades

Parts for the 52-inch cutting deck and blade system.

1. Deck Shell: Welded steel construction with reinforced edges.
2. Blade Spindles: Sealed bearing spindles with pulleys.
3. Blades: High-lift mulching blades (part number specified).
4. Deck Belts: Main drive belt and individual spindle belts.
5. Deck Wheels: Anti-scalp wheels and mounting hardware.
6. Deck Lift: Lift linkage and adjustment components.

CAUTION! Always wear gloves when handling blades. Ensure deck is securely supported during service.

Drive System & Transmission

• Transmission: Dual hydrostatic pumps and wheel motors.
• Drive Belts: Main drive belt and transmission input belts.
• Pulleys: Idler pulleys, tensioners, and drive pulleys.
• Axles: Rear axles with hub and bearing assemblies.
• Hydraulic Fluid: Recommended fluid type and capacity.
• Filters: Hydraulic filter part number and replacement interval.

Controls & Operator Station

Parts for operator controls and station.

Control Levers: Left and right steering/speed levers with grips.

Linkage: Control rods, bushings, and pivot points.

Seat: High-back seat with suspension and mounting brackets.

Safety Switches: Seat switch, brake switch, and PTO switch.

Instrument Panel: Hour meter, indicator lights, and key switch.

Footrests & Floor Mat: Rubber mat and footrest assemblies.

Frame & Body Parts

Structural and body components.

1. Main Frame: Welded steel frame with mounting points.
2. Fenders: Rear fenders and front cowl.
3. Grille & Hood: Engine cover and grille assembly.
4. Brackets: Various mounting brackets for components.
5. Decals & Labels: Safety and identification decals.

Tip: Use torque specifications when tightening frame fasteners.

Wheels & Tires

Front and rear wheel assemblies.

1. Front Wheels: 13 x 6.50-6 tires with bearings.
2. Rear Wheels: 20 x 10.00-8 tires with hub assemblies.
3. Hubs: Front and rear hub part numbers.
4. Bearings: Sealed ball bearings for wheels.
5. Valve Stems: Standard valve stems.

WARNING! Ensure tires are properly inflated to recommended PSI. Check for damage before use.

Maintenance Parts & Kits

Recommended maintenance parts and kits.

Air Filter Kit: Includes primary and pre-filter.

Oil Filter & Oil: Engine oil filter and recommended oil type.

Blade Set: Set of three mulching blades.

Belt Kit: Includes main drive belt and deck belts.

Spark Plug: Recommended spark plug type.

Grease: Multi-purpose grease for fittings.

Parts Ordering Information

How to order genuine Husqvarna parts.

1. Identify part number from diagrams in this manual.
2. Contact authorized Husqvarna dealer or visit Husqvarna website.
3. Provide model number (MZ52) and serial number.
4. Verify part number and description before ordering.

CAUTION! Use only genuine Husqvarna parts to ensure safety and performance.

Safety & Handling

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © 2025 Husqvarna; trademarks of Husqvarna AB. For support, visit www.husqvarna.com or contact 1-800-487-5962.

Troubleshooting & Replacement Guides

Symptom	Possible Cause	Corrective Action
Engine won't start	Fuel, spark, or battery	Check fuel level, spark plug, and battery charge; replace if necessary.
Uneven cutting	Blades or deck level	Sharpen or replace blades; level cutting deck.
Loss of power	Clogged filter or belt	Replace air filter; inspect and adjust drive belts.
Hydrostatic issues	Low fluid or belt	Check hydraulic fluid level; inspect drive belt for wear.
Vibration	Unbalanced blade or loose part	Balance or replace blade; tighten all fasteners.

Reset: Refer to engine manual for reset procedures if equipped.

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