Toro Model 20339 Parts Manual: A Comprehensive Overview (12/18/2025)
Today, December 18, 2025, this manual provides detailed guidance for servicing the Toro 20339 Recycler mower, ensuring optimal performance and longevity through accurate parts identification.
The Toro 20339 is a 22-inch Recycler walk-behind mower, celebrated for its SmartStow feature and efficient cutting capabilities. This parts manual serves as an essential resource for owners and repair technicians alike, offering a comprehensive guide to understanding, maintaining, and repairing this popular lawn care machine.

Released as part of Toro’s commitment to dependable outdoor power, the 20339 model is designed for residential use, providing a balance of performance and user-friendliness. Whether you’re tackling routine maintenance or addressing more complex repairs, this manual will help you navigate the intricacies of the mower’s components.
This manual specifically details parts lookup with diagrams, aiding in accurate identification for models 314000001 through 314999999. Remember that for engine-specific parts – Tecumseh, Honda, Kohler, or Briggs & Stratton – direct contact with your local Toro dealer is required for assistance and procurement.
Understanding the Toro 20339 Recycler Mower
The Toro 20339 Recycler mower distinguishes itself through its innovative mulching system, finely chopping grass clippings and returning them to the lawn as valuable fertilizer. This “recycling” action promotes a healthier, greener turf while reducing the need for chemical fertilizers. The SmartStow feature allows for convenient, upright storage, minimizing garage space consumption.
Understanding the mower’s core functionality is crucial for effective maintenance. The 22-inch cutting deck efficiently handles typical residential lawns, while the engine – available from various manufacturers like Tecumseh, Honda, Kohler, and Briggs & Stratton – provides the necessary power.
This model is designed for ease of use and durability, embodying Toro’s reputation for quality outdoor power equipment. Proper maintenance, guided by this manual, ensures years of reliable service and optimal cutting performance. Remember to consult your Toro dealer for engine-specific parts.
Locating the Parts Manual
Accessing the correct Toro 20339 parts manual is the first step towards successful repairs. Toro provides comprehensive parts diagrams and lists, essential for accurate identification and ordering. These resources are readily available through several channels.
Firstly, visit the official Toro website. Utilize the model number search function to pinpoint the 20339 Recycler mower and download the corresponding parts manual. Alternatively, Toro dealers offer physical copies and can assist with locating specific diagrams.
Online retailers like Lowe’s, Tractor Supply Co., and Ace Hardware often host digital versions of the manual on their websites, alongside parts listings. Searching “Toro 20339 parts lookup” will yield numerous results. Ensure the manual corresponds to your mower’s serial number for accuracy.
Essential Tools for Repair
Successfully repairing your Toro 20339 Recycler mower requires a basic set of tools. A socket set, including metric and standard sizes, is crucial for disassembling and reassembling components. Wrenches, both open-end and adjustable, are equally important for various fasteners.
Screwdrivers – Phillips head and flathead – are indispensable for removing covers and accessing internal parts. Pliers, including needle-nose and locking pliers, provide versatility for gripping and manipulating small components. A torque wrench ensures proper tightening of bolts, preventing damage.
Safety glasses are non-negotiable, protecting your eyes from debris. Work gloves enhance grip and protect your hands. A spark plug wrench is specific to engine maintenance. Finally, a multimeter can be helpful for diagnosing electrical issues.
Key Components and Their Functions
The Toro 20339 Recycler mower comprises several key components. The engine, potentially Tecumseh, Honda, Kohler, or Briggs & Stratton, provides the power, requiring dealer contact for specific parts. The deck houses the blade, responsible for cutting the grass, while the blade assembly ensures efficient trimming.
Wheels and tires provide mobility, with components needing periodic inspection. The bagging system collects clippings, maintaining a clean cut. The deck side chute directs discharge, and the rear door controls airflow.
Understanding each component’s function is vital for effective repair. The engine converts fuel into mechanical energy, the deck supports the blade, and the wheels enable maneuverability. Proper function of each ensures optimal mowing performance and longevity of the mower.
Engine Parts (Tecumseh, Honda, Kohler, Briggs & Stratton ⎻ Dealer Contact Required)
Crucially, sourcing parts for Tecumseh, Honda, Kohler, and Briggs & Stratton engines powering the Toro 20339 necessitates direct contact with an authorized Toro dealer. These engines, while reliable, require specialized expertise for parts identification and procurement.
Common engine parts include carburetors, pistons, cylinders, and ignition coils. Regular maintenance, like oil changes and spark plug replacements, extends engine life. Due to the variety of engine manufacturers used, a universal parts list isn’t feasible.

Important Note: Attempting to source these parts from non-authorized retailers may result in incorrect fitment or compromised quality. Always consult your local Toro dealer for accurate engine component replacements and expert advice.
Deck and Blade Assembly

The Toro 20339’s deck and blade assembly are critical for efficient cutting. Key components include the mower deck itself, the blade(s), blade adapters, and deck wheels. Regularly inspect the blade for sharpness and damage; dull or bent blades reduce cutting performance and can cause engine strain.
Replacement blades must match the original specifications for safety and optimal cutting. Deck wear can occur from abrasion, necessitating replacement or repair. Ensure proper blade installation, tightening bolts to the manufacturer’s specified torque.

Safety First: Always disconnect the spark plug wire before working on the blade or deck. Inspect the deck for any signs of damage, such as cracks or bends, and address them promptly to maintain safe operation.
Wheel and Tire Components
The Toro 20339 utilizes robust wheel and tire components for maneuverability and stability. These include the wheels themselves, tires, wheel bearings, and axle components. Regularly check tire pressure to ensure even cutting and reduce strain on the drive system. Inspect tires for wear, cuts, or damage, replacing them as needed to maintain traction and prevent potential hazards.
Wheel bearings should be checked for smooth operation; excessive play or noise indicates wear and requires replacement. Axle components must be inspected for bends or cracks, as these can affect the mower’s stability and cutting performance.
Important Note: Use only tires specified for the Toro 20339 to ensure proper fit and function. Proper wheel alignment is crucial for smooth operation and even wear.
Common Toro 20339 Issues & Troubleshooting
Several common issues can arise with the Toro 20339. Difficulty starting often points to fuel system problems – check the fuel line, fuel filter, and carburetor. A mower that won’t cut evenly may have a dull or damaged blade, or uneven tire pressure. Unusual noises could indicate worn wheel bearings or a problem with the engine.
If the mower vibrates excessively, inspect the blade for balance and ensure it’s securely attached. For engine-related issues (Tecumseh, Honda, Kohler, Briggs & Stratton), contact your Toro Dealer for specialized parts and service.

Always disconnect the spark plug before performing any maintenance or troubleshooting. Refer to the parts diagrams to accurately identify and replace faulty components.
Bagging System Parts and Maintenance
The Toro 20339’s bagging system relies on several key components: the bag, bag frame, and chute. Regular maintenance ensures efficient grass collection. Inspect the bag frequently for tears or damage, replacing it as needed. A clogged bag indicates excessive grass buildup or a wet cutting environment.
Check the bag frame for cracks or bends, and ensure it’s securely attached to the mower deck. The chute should be clear of obstructions to allow for smooth airflow. Refer to the diagram and parts list (specifically section 314000001 ⎻ 314999999) for detailed illustrations and part numbers.
Empty the bag frequently to prevent overloading and maintain optimal performance. Proper maintenance extends the life of the bagging system and ensures a clean, professional cut.
Deck Side Chute and Rear Door Assembly
The Toro 20339’s deck side chute and rear door assembly are crucial for directing grass clippings effectively, whether bagging, mulching, or side discharging. Inspect these components regularly for damage, ensuring proper alignment and secure attachment.
A damaged chute can lead to uneven grass distribution or clippings escaping during operation. The rear door controls the flow of clippings when bagging; verify it opens and closes smoothly. Consult the diagram for this assembly to identify specific parts and their correct positioning.
Loose or missing hardware can compromise the system’s integrity. Referencing the parts list will help you accurately replace any worn or broken components, maintaining optimal cutting performance and a clean lawn finish.
Safety Precautions When Repairing
Prioritize safety when repairing your Toro 20339. Always disconnect the spark plug wire from the engine before performing any maintenance to prevent accidental starting. Wear safety glasses to protect your eyes from debris, and gloves to shield your hands.
Ensure the mower is on a level surface and the blades are blocked to prevent unintended movement. Never work under the mower without proper support. Be cautious when handling fuel, keeping it away from heat sources and open flames.
If you are unfamiliar with mechanical repairs, consult a qualified technician. Refer to the parts manual for correct component identification and assembly. Following these precautions will minimize the risk of injury and ensure a safe repair process.

Where to Purchase Toro 20339 Parts
Finding replacement parts for your Toro 20339 is straightforward. Toro Dealers are the official and recommended source, offering genuine parts and expert advice. Locate your nearest dealer through the Toro website for specialized assistance, especially for Tecumseh, Honda, Kohler, and Briggs & Stratton engine parts.
Alternatively, several online retailers provide Toro parts. Lowes, Tractor Supply Co., and Ace Hardware stock a range of components, offering convenience and competitive pricing. When ordering online, carefully verify the part number against your parts manual to ensure compatibility.
Always prioritize genuine Toro parts for optimal performance and longevity. Comparing prices across different retailers can help you secure the best deal.
Toro Dealers – Official Parts Source
Toro Dealers represent the most reliable avenue for acquiring genuine parts for your Toro 20339 Recycler mower. They possess in-depth knowledge of Toro equipment and can provide expert guidance in identifying the correct components for your specific needs. This is particularly crucial when dealing with engine parts from manufacturers like Tecumseh, Honda, Kohler, and Briggs & Stratton, where precise matching is essential.
Beyond parts sales, Toro Dealers offer valuable services such as repair assistance and maintenance advice. They maintain a comprehensive inventory of commonly requested parts, minimizing downtime and ensuring a swift return to operation; Utilizing the Toro website, you can easily locate the nearest authorized dealer to receive personalized support.
Choosing a Toro Dealer guarantees quality and compatibility, safeguarding the performance and longevity of your mower.
Online Retailers (Lowes, Tractor Supply Co., Ace Hardware)
Several online retailers, including Lowes, Tractor Supply Co., and Ace Hardware, offer a convenient alternative for sourcing Toro 20339 parts. These platforms often feature extensive catalogs and competitive pricing, allowing for easy comparison shopping from the comfort of your home. Lowes specifically showcases Toro TimeCutter Max models and related components.

Tractor Supply Co. provides a range of Toro snow blowers and potentially compatible parts, while Ace Hardware stocks a selection of Toro power tools, including mowers, and their associated replacement parts. However, verifying part compatibility is crucial when ordering online.
Utilize parts diagrams and your mower’s model number to ensure accurate selection. While convenient, online retailers may not offer the same level of expert advice as an authorized Toro Dealer.
Using Parts Diagrams for Accurate Identification

Accurate parts identification is paramount when repairing your Toro 20339. Relying solely on part numbers can be misleading due to revisions or similar-looking components. Therefore, utilizing detailed parts diagrams is strongly recommended. These diagrams visually represent the exploded view of the mower’s assembly, clearly illustrating each part’s location and relationship to others.
The Toro website and many online retailers provide access to these diagrams, categorized by mower section – such as the deck, engine, or bagging system. Carefully compare the diagram’s depiction of the part with the component you need to replace.
Pay close attention to subtle differences in shape, size, and mounting points. Diagrams often include reference numbers corresponding to specific part numbers, streamlining the ordering process and minimizing errors.
Maintenance Schedule for Longevity
To maximize the lifespan of your Toro 20339 Recycler mower, adhering to a consistent maintenance schedule is crucial. Regular maintenance prevents premature wear and tear, reducing the need for frequent parts replacements. After each use, inspect the mower deck for debris and clean thoroughly.
Every 25 hours of operation, or annually, sharpen or replace the blade, and check/replace the air filter. Every 50 hours, change the engine oil (following the engine manufacturer’s recommendations – Tecumseh, Honda, Kohler, or Briggs & Stratton). Inspect drive belts for cracks or wear.
Annually, lubricate all moving parts and inspect the tires for proper inflation. Following this schedule, alongside using genuine Toro parts, will ensure years of reliable service from your mower.

Warranty Information and Support
Your Toro 20339 Recycler mower is backed by a Toro warranty, covering defects in materials and workmanship. The duration and specific terms vary, so consult your original purchase documentation for details. Warranty coverage typically excludes wear items and damage resulting from improper maintenance.
For warranty claims or support, your first point of contact should be your local Toro dealer. They can assist with repairs, parts inquiries, and warranty validation. Toro also provides extensive online resources, including FAQs, parts diagrams, and contact information on their official website.
Remember that engine components (Tecumseh, Honda, Kohler, Briggs & Stratton) have separate warranties handled directly by those manufacturers. Retain your proof of purchase and serial number for efficient support.