toro model 74633 manual

The Toro Model 74633 is a high-performance lawn mower designed for residential use, featuring a powerful engine, adjustable cutting heights, mulching capability, rear bagging system, and easy-start technology. This manual provides essential information for safe operation, maintenance, and troubleshooting of your Toro lawn mower. Below are key sections covering safety, features, assembly, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Assembly Instructions 3. First-Time Setup 4. Specifications 5. Controls and Operation 6. Maintenance Schedule 7. Storage Guidelines 8. Safety Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Engine, cutting deck, height adjustment lever, mulching plug, rear collection bag, handle with controls, and wheels.

FeatureDescription
EnginePowerful 4-cycle gasoline engine with easy-start technology
Cutting Width21-inch cutting deck for efficient mowing
Height AdjustmentSingle-lever adjustment for 6 cutting positions (1.5-4 inches)
Mulching CapabilityConverts clippings into fine mulch for lawn nutrition
Rear Bagging2-bushel bag for grass collection
Drive SystemSelf-propelled with variable speed control
HandleFoldable for compact storage
WheelsLarge rear wheels for easy maneuverability
Safety FeaturesBlade brake clutch system, operator presence control
Fuel Tank0.5-gallon capacity

Assembly Instructions

Unpack and inspect all parts. Assemble on a flat, stable surface.

  1. Attach handle: Align handle with lower brackets, insert bolts, and tighten securely.
  2. Install collection bag: Attach bag support frame to rear deck, then hook bag onto frame.
  3. Attach mulching plug: Insert plug into rear discharge opening if mulching is desired.
  4. Install wheels: Ensure all wheels are securely fastened with provided hardware.
  5. Add engine oil: Fill with SAE 30 oil to proper level (check dipstick).
  6. Add gasoline: Use fresh unleaded gasoline with minimum 87 octane.

WARNING! Keep hands and feet away from moving parts during assembly. Ensure all fasteners are tight before operation.

First-Time Setup

Before first use, complete these setup steps.

  1. Check oil level: Ensure oil is at full mark on dipstick.
  2. Add fuel: Fill tank with fresh unleaded gasoline.
  3. Adjust cutting height: Set lever to desired position (recommend 3 inches for first mow).
  4. Test controls: Verify throttle, drive control, and safety features function properly.
  5. Start engine: Follow starting procedure in manual.

CAUTION! Operate only in well-ventilated areas. Keep children and pets away during setup and operation.

Specifications

Controls and Operation

Handle Controls: Drive control lever, throttle control, height adjustment lever, and starter grip.

Starting Procedure: 1. Move throttle to FAST position. 2. Prime engine (if cold). 3. Pull starter grip briskly. 4. Allow engine to warm up.

Operation: Engage drive control to move forward. Adjust speed with variable control. Release drive control to stop movement. Always engage blade brake clutch when crossing driveways or roads.

Cutting Height Adjustment: Use single lever to raise or lower deck. Ensure all wheels are at same setting.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

  1. Before each use: Check oil level, inspect blade for damage, clear deck of debris.
  2. Every 25 hours: Change engine oil, clean or replace air filter, check spark plug.
  3. Every season: Sharpen or replace blade, clean underside of deck, lubricate wheels and height adjustment mechanism.
  4. Storage preparation: Drain fuel or add stabilizer, clean entire unit, store in dry location.

Tip: Always disconnect spark plug wire before performing any maintenance.

Storage Guidelines

Proper storage prevents damage and ensures easy startup next season.

  1. Clean thoroughly: Remove all grass and debris from deck, engine, and bag.
  2. Fuel management: Either drain tank completely or add fuel stabilizer and run engine for 5 minutes.
  3. Oil change: Consider changing oil before storage if due.
  4. Battery (if equipped): Remove and store in cool, dry place.
  5. Storage location: Store in dry, covered area away from moisture and extreme temperatures.

WARNING! Never store with fuel in tank in enclosed area due to fire risk.

Safety Features

Blade Brake Clutch: Stops blade within 3 seconds when control is released. Operator Presence Control: Engine stops if operator leaves position. Safety Labels: Read and understand all labels on mower. Protective Shields: Keep all shields in place during operation.

Care & Cleaning

After each use: Clean underside of deck with brush or scraper. Wipe exterior with damp cloth. Periodically: Wash with mild detergent and water (avoid electrical components). Dry thoroughly before storage.

CAUTION! Never use high-pressure water spray. Always disconnect spark plug before cleaning.

Regulatory Information

EPA Certified: Meets emission standards for small engines. CARB Compliant: Certified for sale in California. Copyright © 2025 Toro; all rights reserved. For support, visit www.toro.com or contact 1-888-384-9939. This equipment meets ANSI B71.1 safety standards for power lawn mowers.

Troubleshooting

SymptomPossible CauseCorrective Action
Engine won't startNo fuel, stale fuel, spark plugCheck fuel level, use fresh gasoline, clean/replace spark plug.
Poor cutting performanceDull blade, clogged deckSharpen or replace blade, clean underside of deck.
Uneven cuttingUneven tire pressure, wrong height settingCheck tire pressure, adjust cutting height evenly.
Excessive vibrationLoose blade, bent bladeTighten blade bolt, replace bent blade.
Self-propel not workingDrive belt, control cableCheck drive belt for wear, adjust control cable tension.

Service: For repairs beyond basic maintenance, contact authorized Toro service center.

Support: 1-888-384-9939; www.toro.com

toro model 74633 manual © - All Rights Reserved 2025