MTD 139-402A Lawn Mower Manual

The MTD 139-402A is a reliable lawn mower designed for efficient grass cutting with a powerful engine, adjustable cutting heights, and a durable build. This manual provides essential information on safety, features, operation, maintenance, and troubleshooting to ensure optimal performance.

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 maneuverability.

Feature	Description
Engine	Powerful 139cc engine for efficient cutting
Cutting Height Adjustment	Multiple height settings for customized grass length
Lightweight Design	Easy to maneuver and transport
Durable Build	Constructed for long-lasting performance

Safety Information

Always wear appropriate safety gear, including gloves and eye protection. Ensure the mower is off before performing any maintenance.

WARNING! Keep hands and feet away from the cutting blade.

Operation Instructions

To operate the MTD 139-402A, follow these steps:

Check oil and fuel levels before starting.
Adjust the cutting height as needed.
Start the engine and begin mowing.
Turn off the engine and clean the mower after use.

Specifications

Engine Type: 139cc 4-stroke engine.
Cutting Width: 21 inches.
Cutting Heights: 1 inch to 3 inches adjustable.
Weight: 50 lbs.
Fuel Capacity: 1.5 quarts.
Oil Capacity: 0.5 quarts.

Maintenance

Regular maintenance is essential for optimal performance. Change the oil every 25 hours of use and clean the air filter regularly.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	No fuel	Check fuel level and refill if necessary.
Uneven cutting	Worn blade	Sharpen or replace the cutting blade.
Excessive vibration	Loose parts	Tighten all screws and bolts.
Engine overheating	Low oil level	Add oil to the recommended level.