The Toro 20340 is a professional-grade walk-behind mower designed for commercial and residential use. This service manual provides detailed instructions for maintenance, troubleshooting, and repair of the mower's engine, cutting system, drive train, and electrical components. Below are key sections covering safety, specifications, maintenance procedures, troubleshooting, and parts information.
Key components: Commercial-grade engine, high-lift cutting deck, hydrostatic drive system, adjustable cutting height, electric start, and durable steel construction.
| Feature | Description |
|---|---|
| Engine | Commercial-grade gasoline engine with electric start |
| Cutting Width | 21-inch cutting deck |
| Drive System | Hydrostatic transmission with variable speed control |
| Cutting Height Adjustment | Lever-based adjustment for multiple height settings |
| Deck Material | Reinforced steel construction |
| Fuel Capacity | 1.5-gallon fuel tank |
| Blade Type | High-lift mulching blade |
| Handle Controls | Ergonomic design with safety features |
| Wheels | 10-inch rear wheels, 8-inch front wheels |
| Weight | Approximately 95 lbs |
Always follow safety guidelines to prevent injury or damage.
WARNING! Failure to follow safety instructions may result in serious injury or death. Always turn off engine and remove key before servicing.
Regular maintenance ensures optimal performance and longevity.
| Interval | Task |
|---|---|
| Before each use | Check oil level, inspect blades, ensure safety features functional |
| Every 25 hours | Change engine oil, clean air filter, inspect spark plug |
| Every 50 hours | Replace air filter, check drive belt tension, lubricate moving parts |
| Every 100 hours | Replace spark plug, check valve clearance, inspect fuel system |
| Seasonal | Sharpen/replace blades, check tire pressure, store properly |
Note: Service intervals may vary based on operating conditions.
Procedures for engine maintenance and troubleshooting.
CAUTION! Allow engine to cool before servicing. Avoid spilling oil or fuel.
Maintenance and adjustment of cutting deck and blades.
WARNING! Blades are sharp; handle with care. Always wear gloves.
Service for hydrostatic transmission and drive components.
Tip: If drive performance declines, check fluid and belt condition first.
Diagnosis and service of starting and ignition systems.
CAUTION! Disconnect battery before electrical work to prevent shorts.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | Fuel, spark, or compression issue | Check fuel level, spark plug, and choke setting; ensure safety switches engaged. |
| Poor cutting performance | Dull blades or uneven deck | Sharpen/replace blades; level cutting deck. |
| Loss of power | Clogged air filter or fuel system | Clean/replace air filter; inspect fuel lines and carburetor. |
| Drive system sluggish | Low fluid or worn belt | Check transmission fluid; inspect drive belt for wear. |
| Excessive vibration | Unbalanced blade or loose parts | Balance or replace blade; tighten all bolts and fasteners. |
| Electric start not working | Dead battery or faulty starter | Charge or replace battery; test starter motor connections. |
Reset: For safety switch issues, ensure all controls are in neutral/off position.
Common replacement parts for Toro 20340 (refer to official parts manual for complete list).
Note: Always use genuine Toro parts for optimal performance and warranty compliance.
Toro 20340 includes a limited warranty covering defects in materials and workmanship. Commercial use may have different terms.
Disclaimer: Warranty does not cover damage from misuse, neglect, or unauthorized modifications.