MTD 123-290 Lawn Mower Manual

The MTD 123-290 is a reliable lawn mower designed for efficient grass cutting with a powerful engine, adjustable cutting height, and easy maneuverability. This manual provides essential information on safety, features, maintenance, operation, 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: 21-inch cutting deck, 6 adjustable cutting heights, easy-start engine, and ergonomic handle for comfort.

FeatureDescription
Cutting Deck21-inch wide for efficient mowing
EnginePowerful 140cc engine for reliable performance
Adjustable Height6 cutting height settings for customized grass length
Ergonomic HandleComfortable grip for ease of use
Grass BagLarge capacity for less frequent emptying

Safety Information

Always wear appropriate safety gear, including gloves and eye protection. Ensure the area is clear of debris before mowing.

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

Operation Instructions

To start the mower, ensure the throttle is in the correct position and pull the starter cord firmly. Adjust the cutting height as needed.

  1. Check oil level before starting.
  2. Fill the fuel tank with fresh gasoline.
  3. Start the engine and allow it to warm up.
  4. Begin mowing by pushing the mower forward.

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

Specifications

Maintenance

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

Troubleshooting

SymptomPossible CauseCorrective Action
Engine won't startNo fuelCheck fuel level and refill if necessary.
Uneven cutWorn bladesSharpen or replace the blades.
Excessive vibrationLoose partsTighten all screws and bolts.
Grass clippings not baggingClogged chuteClear the chute of debris.

Service: For further assistance, contact MTD customer service.

MTD 123-290 Lawn Mower Manual © - All Rights Reserved 2026