MTD 120-550 Lawn Mower Manual

The MTD 120-550 is a reliable lawn mower designed for efficient grass cutting with a powerful engine, adjustable cutting heights, and easy maneuverability. This manual provides essential information on safety, features, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Safety Information 3. Operation Instructions 4. Specifications 5. Maintenance 6. Troubleshooting

Features at a Glance

Key features include a powerful engine, adjustable cutting height, and a lightweight design for easy handling.

Feature	Description
Engine	Powerful 120cc engine for efficient cutting
Cutting Height Adjustment	5 adjustable heights for customized grass length
Lightweight Design	Easy to maneuver and transport
Grass Catcher	Included for easy grass collection
Durable Blades	High-quality steel blades for a clean cut

Safety Information

Read all safety instructions before operating the mower. Always wear appropriate safety gear, including eye protection and sturdy footwear.

Keep hands and feet away from moving parts.
Do not operate in wet conditions.
Ensure all safety guards are in place before use.
Turn off the engine before performing maintenance.

Operation Instructions

To operate the MTD 120-550, follow these steps:

Check oil and fuel levels before starting.
Adjust the cutting height as needed.
Start the engine using the recoil starter.
Guide the mower in a straight line for even cutting.

WARNING! Always be aware of your surroundings while mowing.

Specifications

Engine Type: 120cc 4-stroke gas engine.
Cutting Width: 21 inches.
Cutting Heights: 1 inch to 3.5 inches.
Weight: 50 lbs.
Fuel Capacity: 1.5 quarts.
Blade Type: Steel, sharp and durable.

Maintenance

Regular maintenance is essential for optimal performance:

Change the oil every 25 hours of operation.
Sharpen blades at least once per season.
Clean the air filter regularly.
Inspect and replace spark plug as needed.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	No fuel	Check fuel level and refill if necessary.
Uneven cutting	Blades dull	Sharpen or replace blades.
Excessive vibration	Loose parts	Tighten all screws and bolts.
Grass clumping	Too wet	Mow when grass is dry.

Service: For further assistance, contact MTD customer support.