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Lawn-Boy 10321 - User Manual

Lawn-Boy 10321
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Operators Manual
Manuel de L’Utilisateur
Manual del Operador
FORM NO. 3319–477 Rev A
Silver Series
Walk-behind Power Mower
Model No. 10200, 10248, 10249, 10313, 10321, 10327, 10328,
10330 — 8900001 & Up
Série Silver
Tondeuse motorisée à guidage arrière
Modèle No. 10200, 10248, 10249, 10313, 10321, 10327, 10328,
10330 — 8900001 et suivants
Serie Silver
Cortadora de césped motorizada empujada por
el usuario
Modelos N. 10200, 10248, 10249, 10313, 10321, 10327, 10328,
10330 — 8900001 y siguientes

Table of Contents

Questions and Answers

  • C
    Caitlin ReedAug 5, 2025
    Why Lawn-Boy Lawn Mower engine will not start?
    • V
      Vernon RobinsonAug 5, 2025
      If your Lawn-Boy lawn mower engine won't start, try these steps: First, fill the fuel tank with fresh gasoline. Next, press the primer three times. Ensure the spark plug wire is connected. Finally, clean the spark plug, check its gap, and replace it if it's damaged.
  • N
    Nancy MillerAug 10, 2025
    What to do if Lawn-Boy Lawn Mower engine starts hard or loses power?
    • V
      Veronica GutierrezAug 10, 2025
      If your Lawn-Boy lawn mower engine starts hard or loses power, try the following: drain and refill the fuel tank with fresh gasoline, clean the gas cap vent hole, replace the air filter element (if you have models 10200, 10249, 10313, 10321) or clean air filters (if you have models 10248, 10327, 10328, 10330), clean the mower discharge chute and the underside of the mower deck, clean the spark plug (checking the gap and replacing if damaged), and check the engine oil.
  • T
    tylerharperAug 13, 2025
    How to fix Lawn-Boy Lawn Mower that will not self-propel?
    • S
      Susan HebertAug 13, 2025
      If your Lawn-Boy lawn mower will not self-propel, try adjusting the self-propelled cable and clean any debris under the belt cover.
  • Y
    yboydAug 17, 2025
    Why Lawn-Boy Lawn Mower engine runs rough?
    • T
      Tiffany WilsonAug 18, 2025
      If your Lawn-Boy lawn mower engine is running rough, make sure the spark plug wire is connected. Also, clean the spark plug, check the spark plug gap, and replace the spark plug if damaged. Replace the air filter element if you have models 10200, 10249, 10313, or 10321, or clean the air filters if you have models 10248, 10327, 10328, or 10330.
  • E
    elizabethowensAug 22, 2025
    What to do if Lawn-Boy Lawn Mower vibrates excessively?
    • G
      Gregory GriffinAug 22, 2025
      If your Lawn-Boy lawn mower or engine vibrates excessively, you should: balance the blade, tighten the blade mounting nut, clean the mower discharge chute, clean the underside of the mower deck, and tighten the engine mounting bolts.
  • P
    Paula LewisAug 27, 2025
    Why Lawn-Boy Lawn Mower has uneven cutting pattern?
    • N
      Nicholas JonesAug 27, 2025
      If your Lawn-Boy lawn mower has an uneven cutting pattern, ensure all four wheels are at the same height. Sharpen and balance the blade. Try changing your mowing pattern and clean the underside of the mower deck.
  • D
    Daniel WallaceAug 30, 2025
    What to do if Lawn-Boy Lawn Mower discharge chute plugs?
    • Y
      ysharpAug 31, 2025
      If the discharge chute of your Lawn-Boy lawn mower keeps plugging, try raising the cutting height. Allow the grass to dry before mowing. Also, clean the underside of the mower deck.

Summary

Assembly

Operation

Starting Engine

Step-by-step guide to starting the mower engine.

Stopping Engine

How to properly stop the mower engine.

Self-propelled Drive

Instructions for operating the self-propelled feature of the mower.

Adjusting Cutting Height

How to adjust the mower's cutting height for different lawn conditions.

Mulching Tips

Maintenance

Recommended Maintenance Schedule

A schedule for routine maintenance tasks and their intervals.

Air Filter

Instructions for cleaning or replacing the air filter.

Change Engine Oil

Procedure for changing the engine oil.

Spark Plug

How to clean, inspect, and replace the spark plug.

Blade

Information on inspecting, sharpening, and replacing the mower blade.

Blade Removal

Steps for removing the mower blade.

Troubleshooting

Engine will not start

Common issues and corrective actions for a mower that won't start.

Engine starts hard or loses power

Solutions for a mower that has difficulty starting or loses power.

Mower will not self-propel

Steps to resolve issues with the self-propelled drive system.

Mulch Plate

Storage

Folding Handle

Lawn-Boy 10321 Specifications

General IconGeneral
BrandLawn-Boy
Model10321
CategoryLawn Mower
LanguageEnglish

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