MTD 138-390A Lawn Mower Manual

The MTD 138-390A is a powerful lawn mower designed for efficient grass cutting. It features a robust engine, adjustable cutting heights, and a durable steel deck. 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: powerful engine, adjustable cutting height, easy-start mechanism, and ergonomic handle design.

Feature	Description
Engine	Powerful 138cc engine for efficient cutting
Cutting Height Adjustment	5 adjustable heights for customized grass length
Steel Deck	Durable construction for long-lasting use
Ergonomic Handle	Comfortable grip for ease of use
Easy Start	Simple pull-start mechanism

Safety Information

Always wear appropriate safety gear, including gloves and eye protection. Read the manual thoroughly before operating the mower.

Operation Instructions

To operate the MTD 138-390A, follow these steps:

Check oil and fuel levels before starting.
Adjust the cutting height as desired.
Start the engine using the pull-start mechanism.
Guide the mower in a straight line for even cutting.

WARNING! Do not operate on wet grass to avoid slipping.

Specifications

Engine Type: 138cc 4-stroke.
Cutting Width: 21 inches.
Cutting Heights: 5 positions (1.5" to 4").
Deck Material: Steel.
Weight: 60 lbs.
Fuel Type: Unleaded gasoline.
Oil Capacity: 20 oz.

Maintenance

Regular maintenance is crucial for optimal performance. Change the oil every 25 hours of operation 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 blades	Sharpen or replace blades.
Excessive vibration	Loose parts	Tighten all screws and bolts.
Engine overheating	Low oil level	Add oil to the engine.

Service: For further assistance, contact MTD customer service.