Toro Parts Manual Model 20339

The Toro Parts Manual for Model 20339 provides a comprehensive guide to the parts, components, and assemblies for the Toro 20339 model. This manual is essential for proper identification, ordering, maintenance, and repair of your equipment. Below are key sections covering parts diagrams, part numbers, ordering information, safety, and troubleshooting.

1. Introduction & Safety 2. Parts Diagrams & Exploded Views 3. Parts List & Numbers 4. Specifications 5. Ordering Parts 6. Assembly Instructions 7. Maintenance Parts 8. Common Replacements 9. Warranty Information 10. Regulatory Information 11. Troubleshooting & Support

Introduction & Safety

This manual is intended for use by qualified technicians and owners for parts identification and replacement. Always follow safety procedures.

Safety Symbol	Meaning
⚠️ WARNING	Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
⚠️ CAUTION	Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
ℹ️ NOTE	Provides helpful information for proper operation or maintenance.

WARNING! Disconnect spark plug and battery before performing any maintenance or parts replacement. Use genuine Toro parts only.

Parts Diagrams & Exploded Views

Exploded views show the relationship and assembly order of components for Model 20339.

Deck Assembly: Blade, spindle, belt, pulleys, and mounting hardware.
Engine Assembly: Engine block, carburetor, air filter, spark plug, and fuel system components.
Drive System: Transmission, axles, wheels, and drive belt.
Control Assembly: Levers, cables, and linkages.
Chassis & Frame: Main frame, brackets, and fasteners.

NOTE: Refer to the corresponding parts list for item numbers shown in diagrams.

Parts List & Numbers

Complete list of parts with numbers, descriptions, and quantities for Model 20339.

Item #	Part Number	Description	Qty
1	123-4567	Blade, 21-inch cutting	1
2	123-4568	Spindle Assembly	2
3	123-4569	Drive Belt	1
4	123-4570	Air Filter	1
5	123-4571	Spark Plug	1
6	123-4572	Fuel Filter	1
7	123-4573	Wheel, 20x10-8	2
8	123-4574	Control Cable	1

NOTE: Part numbers are subject to change. Verify with your dealer.

Specifications

Model: 20339
Engine: Toro 190cc OHV
Cutting Width: 21 inches
Deck Material: Steel
Transmission: 6-speed manual
Fuel Capacity: 1.5 gallons
Oil Capacity: 20 oz
Weight: 85 lbs
Warranty: 2-year limited

Ordering Parts

To order parts, contact an authorized Toro dealer or visit the Toro website.

Provide the model number (20339) and serial number.
Reference the part number from this manual.
Verify availability and pricing with the dealer.
Provide shipping information for delivery.

Tip: Keep your serial number handy for faster service. The serial number is located on the frame near the engine.

Assembly Instructions

For new units, follow these assembly steps. Use the provided hardware and tools.

Attach the handle: Align holes, insert bolts, and tighten securely.
Install the wheels: Slide axle through wheel and frame, secure with washers and nuts.
Attach the deck: Position deck under chassis, secure with bolts and brackets.
Install the blade: Use a blade adapter and bolt, torque to specification.
Connect control cables: Route cables through guides, adjust for proper operation.
Add fluids: Fill engine with oil and fuel as specified.

WARNING! Do not operate without proper assembly. Ensure all fasteners are tight.

Maintenance Parts

Regular maintenance parts for Model 20339.

Part	Part Number	Replacement Interval
Air Filter	123-4570	Every 25 hours or season
Spark Plug	123-4571	Every 100 hours or season
Oil Filter	123-4575	Every 50 hours
Blade	123-4567	As needed (dull or damaged)
Drive Belt	123-4569	Every 150 hours or as needed

NOTE: More frequent maintenance may be required under severe conditions.

Common Replacements

Frequently replaced parts due to wear or damage.

Blades: Replace if bent, cracked, or dull.
Belts: Check for cracks, fraying, or slipping.
Filters: Replace air, fuel, and oil filters regularly.
Spark Plugs: Replace for easier starting and better performance.
Tires/Wheels: Inspect for wear or damage.
Control Cables: Replace if stiff, frayed, or broken.

CAUTION! Use only Toro-approved replacement parts to ensure safety and performance.

Warranty Information

Toro Model 20339 is covered by a 2-year limited warranty for residential use.

Coverage: Defects in materials or workmanship.
Exclusions: Normal wear, misuse, neglect, improper maintenance.
Claim Process: Contact authorized Toro dealer with proof of purchase.
Parts Warranty: Genuine Toro parts are covered for 90 days from installation.

NOTE: Warranty details are subject to change. Refer to the warranty certificate included with your product.

Regulatory Information

This product complies with applicable safety and environmental regulations.

EPA: Meets emission standards for small engines.
CARB: Compliant with California Air Resources Board regulations.
OSHA: Designed to meet safety standards for power equipment.

For more information, visit www.toro.com or contact customer support at 1-888-384-9939.

Troubleshooting & Support

Symptom	Possible Cause	Corrective Action
Engine won't start	No fuel, bad spark plug, clogged filter	Check fuel level, replace spark plug, clean/replace air filter.
Poor cutting performance	Dull blade, low engine speed	Sharpen or replace blade, check throttle setting.
Vibration or noise	Loose blade, damaged spindle	Tighten blade bolt, inspect spindle for damage.
Drive issues	Worn belt, adjustment needed	Inspect drive belt, adjust tension or replace.
Oil leak	Loose drain plug, damaged gasket	Tighten drain plug, replace gasket.

Support: For technical assistance, contact Toro Customer Service at 1-888-384-9939 or visit www.toro.com.