The Toro Model 20333 is a commercial-grade walk-behind mower designed for durability and performance. This parts manual provides detailed information on all components, assemblies, and part numbers for proper maintenance, repair, and ordering. Below are key sections covering identification, engine parts, cutting deck assembly, drive system, controls, and ordering information.
Key identifiers: Model Number 20333, Serial Number location on frame near right rear wheel. Product type: 21" Walk-Behind Mower with Briggs & Stratton engine.
| Component | Description |
|---|---|
| Model Number | 20333 (located on product identification label) |
| Engine | Briggs & Stratton 550e Series, 140cc |
| Cutting Width | 21 inches (53 cm) |
| Deck Material | 12-gauge steel, reinforced |
| Drive System | Variable speed, rear-wheel drive |
| Cutting Height Adjustments | Single lever, 6 positions (1.5" - 4") |
| Fuel Tank Capacity | 1.1 quarts (1.04 liters) |
| Oil Capacity | 20 oz (0.6 liters) |
| Weight | Approx. 75 lbs (34 kg) |
| Warranty | Commercial 2-year limited |
Complete breakdown of Briggs & Stratton 140cc engine parts.
WARNING! Disconnect spark plug before servicing engine. Use genuine Toro parts for optimal performance.
Deck assembly parts for 21-inch cutting system.
CAUTION! Always ensure blade is stopped and engine is off before accessing deck. Wear gloves.
Handle and control components for operator interface.
Handle: Upper and lower handle bars, grip covers, bolts.
Controls: Drive control lever, bail (safety) cable, throttle control, choke knob. Cables: Part numbers for control cables (length 48"). Hardware: Handle knobs, pivot bolts, lock nuts, washers. Height Adjust: Single lever assembly, quadrant, pin.
Front and rear wheel assemblies, frame components.
Tip: Check axle nuts for tightness every 25 hours of operation.
Wiring, switches, and electrical components.
WARNING! Disconnect battery before servicing electrical system. Follow wiring diagram.
Bolts, nuts, washers, and identification labels.
Fastener Kits: Deck bolt kit, engine mount bolt kit, handle hardware kit. Decals: Warning labels, model/serial number plate, operation decals. Consumables: Grease fittings, lubricant, thread locker.
Refer to diagrams for part relationships and installation order.
CAUTION! Use diagrams during assembly to ensure correct part placement and orientation.
Genuine Toro parts ensure fit and performance. Contact authorized dealer with model and serial number. Warranty covers defects in materials/workmanship for 2 years commercial use from date of purchase. Proof of purchase required. Normal wear items (blades, belts, tires) not covered.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | Fuel, spark, compression | Check fuel level, spark plug, air filter. Ensure safety interlock engaged. |
| Poor cutting performance | Dull blade, deck clog | Sharpen/replace blade. Clean underside of deck. |
| Loss of drive power | Worn belt, adjustment | Inspect drive belt for wear. Adjust drive cable tension. |
| Excessive vibration | Unbalanced blade, loose parts | Check blade balance and tightness. Inspect spindle bearings. |
| Oil leak | Loose drain plug, seal | Tighten drain plug. Replace crankcase seal if necessary. |
Service Interval: Change oil every 50 hours. Grease fittings every 25 hours.
Support: Contact Toro Customer Service at 1-888-384-9939 or visit www.toro.com