toro model 21352 manual

The Toro Model 21352 is a high-performance walk-behind lawn mower featuring a 21-inch cutting deck, Briggs & Stratton engine, 3-in-1 cutting system (mulch, bag, side discharge), adjustable cutting height, easy-start technology, and durable steel construction. Designed for residential use, it offers reliable performance for maintaining small to medium-sized lawns. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

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

Features at a Glance

Key components: 21-inch steel cutting deck, Briggs & Stratton engine, 3-in-1 cutting system, height adjustment lever, rear bagger, mulch plug, side discharge chute, and easy-pull start.

Feature	Description
Cutting Deck	21-inch steel deck for durable cutting performance
Engine	Briggs & Stratton 140cc engine with easy-start technology
Cutting System	3-in-1: mulch, bag, or side discharge
Height Adjustment	Single-lever adjustment for 6 cutting heights (1.5-4 inches)
Drive System	Self-propelled rear-wheel drive with variable speed control
Bag Capacity	2.5 bushel rear bag for efficient grass collection
Handle	Foldable design for compact storage
Wheels	8-inch rear wheels, 7-inch front wheels for maneuverability
Safety Features	Blade brake clutch system, operator presence control
Warranty	Limited 2-year residential warranty

Assembly Instructions

Unpack all parts and inspect for damage. Assembly requires basic tools (included).

Attach handle: Align handle brackets with deck mounts, secure with provided bolts and wrench.
Install wheels: Insert axles through wheel hubs, secure with washers and retaining clips.
Attach grass bag: Hook bag frame onto rear deck mounts, ensure secure latch.
Install side discharge chute: Align with deck opening, secure with wing nut.
Add engine oil: Fill with SAE 30 detergent oil (check dipstick for proper level).
Add gasoline: Use fresh unleaded gasoline (87 octane minimum), fill to indicated line.

WARNING! Wear gloves during assembly. Ensure all bolts are tightened securely before operation.

First-Time Operation

Complete assembly and pre-operation checks before starting.

Check oil and fuel levels: Ensure proper levels as per specifications.
Select cutting mode: Install mulch plug, bag, or side discharge chute as desired.
Adjust cutting height: Use single lever to set desired height (start at highest setting).
Start engine: Set throttle to fast position, pull starter cord firmly.
Engage drive: Squeeze drive control lever to self-propel, adjust speed with control.
Begin mowing: Walk at steady pace, overlap passes for even cutting.

CAUTION! Clear mowing area of debris. Keep hands and feet away from cutting deck during operation.

Specifications

Model: 21352
Cutting Width: 21 inches
Engine: Briggs & Stratton 140cc, 4-cycle
Cutting Heights: 6 positions, 1.5 to 4 inches
Drive System: Self-propelled rear-wheel drive
Speed Control: Variable speed (0-3.5 mph)
Bag Capacity: 2.5 bushels
Deck Material: Powder-coated steel
Wheel Size: 8-inch rear, 7-inch front
Weight: 75 lbs (approx.)
Fuel Capacity: 0.5 gallons
Oil Capacity: 20 oz (SAE 30)

Controls and Settings

Primary controls located on handle. Engine controls on engine housing.

Handle Controls: Drive control lever, speed control dial, height adjustment lever, blade engagement lever.

Engine Controls: Throttle control, choke, primer bulb, fuel valve, ignition key (if equipped).

Cutting Height Adjustment: Single lever adjusts all four wheels simultaneously. Speed Control: Dial adjusts self-propelled speed from 0 to 3.5 mph. Blade Engagement: Lever must be held against handle to keep blade rotating (safety feature).

Cutting System Setup

Configure for mulching, bagging, or side discharge.

Mulching: Install mulch plug in rear discharge opening. Ensure blade is mulching type.
Bagging: Attach grass bag to rear mounts. Remove mulch plug and side discharge chute.
Side Discharge: Install side discharge chute. Remove mulch plug and bag.
Blade Check: Ensure sharp blade installed correctly (cutting edge toward ground).

Tip: For best results, mow when grass is dry. Change cutting mode based on grass conditions.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

Before each use: Check oil level, inspect blade for damage, clear deck of debris.
Every 25 hours: Change engine oil (or annually).
Every 50 hours: Replace air filter, check spark plug.
Every season: Sharpen or replace blade, lubricate wheel bearings and height adjustment mechanism.
Storage: Drain fuel or add stabilizer, clean thoroughly, store in dry location.

WARNING! Disconnect spark plug before performing any maintenance. Allow engine to cool completely.

Storage Guidelines

Proper storage prevents damage and extends mower life.

Clean thoroughly: Remove grass clippings from deck, wheels, and engine.
Fuel management: Either drain tank completely or add fuel stabilizer to fresh gasoline.
Oil: Change oil if nearing maintenance interval.
Blade: Sharpen and balance blade before storage.
Storage location: Store in dry, covered area. Fold handle for compact storage.
Battery (if equipped): Remove and store in cool, dry place, maintain charge.

CAUTION! Never store mower with fuel in tank near open flames or heat sources.

Regulatory Information

EPA Certified: Engine meets EPA emission standards for lawn mowers. CARB Compliant: Meets California Air Resources Board requirements. Safety Standards: Complies with ANSI B71.1-2017 safety standards for walk-behind mowers. Copyright © 2025 The Toro Company. All rights reserved. For support, visit www.toro.com or contact 1-888-384-9939.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Fuel, spark, safety switch	Check fuel level, prime engine, ensure blade engagement lever is released, check spark plug connection.
Poor cutting performance	Dull blade, engine speed	Sharpen or replace blade, ensure throttle at FAST position, check for deck clogging.
Uneven cutting	Deck level, tire pressure	Level cutting deck, ensure tires properly inflated, check for worn blade.
Self-propel not working	Drive belt, control cable	Check drive belt for wear or damage, adjust drive control cable tension.
Excessive vibration	Loose blade, debris	Tighten blade bolt, remove debris from blade and deck, check for bent blade.
Grass not discharging	Wet grass, deck clog	Mow when grass is dry, clean underside of deck, ensure proper cutting mode setup.

Reset: For safety switch issues, ensure all controls are in proper starting position.

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