Yard-Man 11A-589C401 User Manual

Yard-Man 11A-589C401

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21” Rear Discharge

Rotary Mower

Model Number

11A-589C401

PRINTED IN U.S.A.

OPERATOR’S MANUAL

FORM NO.

770-10111A.fm

(12/99)

IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

MTD PRODUCTS INC. P.O. BOX 368022 CLEVELAND, OHIO 44136-9722

Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-

covered, brush-covered or grass-covered land unless the engine’s exhaust system is equipped with a spark arrester meeting

applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator.

In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have

similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized

service dealer or contact the service department, P.O. Box 368022 Cleveland, Ohio 44136-9722.

Table of Contents

Questions and Answers:

A
angelabellAug 12, 2025
Why Yard-Man 11A-589C401 engine fails to start?
- N
  Nancy MayerAug 13, 2025
  If your Yard-Man Lawn Mower engine won't start, several factors could be the cause. First, make sure that the blade control handle is engaged. Next, verify that the spark plug wire is securely connected to the spark plug. If these aren't the issue, check your fuel tank to ensure it's not empty or filled with stale fuel; if so, refill it with fresh gasoline. A blocked fuel line could also be the culprit, so try cleaning it. Inspect the spark plug itself for any faults and clean, adjust the gap, or replace it if necessary. Lastly, if the engine is flooded, wait a few minutes before attempting to restart it, and avoid priming it this time.
H
hubbardshannonAug 16, 2025
What to do if Yard-Man 11A-589C401 Lawn Mower engine runs erratic?
- P
  Patricia CaldwellAug 16, 2025
  If your Yard-Man Lawn Mower engine runs erratically, consider these potential causes and solutions: * Ensure the spark plug wire is securely connected and tightened. * Check for a blocked fuel line or stale fuel; clean the fuel line and refill the tank with fresh gasoline. * Inspect the vent in the gas cap to ensure it isn't plugged; clear it if necessary. * Drain the fuel tank and refill with fresh fuel to eliminate water or dirt in the fuel system. * Clean the air cleaner. * Adjust the carburetor.
M
Mrs. Whitney SuttonAug 20, 2025
Why does my Yard-Man 11A-589C401 Lawn Mower engine overheat?
- M
  Mark WhiteAug 20, 2025
  If your Yard-Man Lawn Mower engine overheats, check these potential issues: 1. Ensure the engine oil level is adequate by filling the crankcase with the proper oil. 2. Check for any restrictions to airflow and remove the blower housing to clean it. 3. The carburetor might not be adjusted properly, so adjust it accordingly.
J
jonespaulAug 25, 2025
How to fix Yard-Man 11A-589C401 when it idles poorly?

Yard-Man 11A-589C401 Specifications

General

Cutting Width	21 inches
Drive Type	Self-Propelled
Deck Material	Steel
Cutting Height	1.25 to 3.75 inches
Cutting Options	Mulching, rear bag, side discharge

Summary

Maintaining Safety

General Operation Safety

Essential safety rules for operating the lawn mower safely.

Slope Operation Safety

Guidelines for safe mowing on inclined surfaces.

Child Safety Precautions

Protecting children from mower hazards during operation.

Service Safety Guidelines

Safety measures for handling fuel and performing maintenance.

Slope Gauge

Assembling Your Lawn Mower

Initial Setup and Safety Procedures

Handle and Accessory Assembly

Operating Your Lawn Mower

Fuel and Oil Filling Instructions

Proper procedures for fueling and oiling the mower engine.

Starting and Mowing Procedures

Making Adjustments

Cutting Height Adjustment

Handle Height Adjustment

Maintaining Your Lawn Mower

General Maintenance Recommendations

Lubrication Procedures

Engine Maintenance

Deck Cleaning and Blade Care

Troubleshooting

Common Mower Problems and Solutions

Guide to diagnosing and resolving typical mower issues.

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