Lawn-Boy 10552 User Manual

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Operator’s Manual

Para obtener una versión gratis de este manual en español, escriba a la dirección

indicada más abajo. Asegúrese de indicar el modelo y el número de serie de su producto.

Pour obtenir gratuitement une version en français de ce manuel, écrivez à l’adresse

ci–dessous. N’oubliez pas d’indiquer les numéros de modèle et de série de votre produit.

Lawn-Boy Inc., Attn: Parts Dept., 8111 Lyndale Ave S, Bloomington, MN 55420-1196.

Domestic English (EN)

Form No. 3325-494 Rev A

GoldPro Series



Walk Power Lawn Mower

10424—210000001 and Up

10550—210000001 and Up

10552—210000001 and Up

Table of Contents

Questions and Answers:

M
Monica HughesAug 5, 2025
How to fix Lawn-Boy Lawn Mower that won't start?
- P
  Patrick CrawfordAug 5, 2025
  If your Lawn-Boy Lawn Mower engine won't start, several issues could be the cause. First, ensure the fuel tank isn't empty and the fuel is fresh. If that's not the problem, check that the throttle lever is in the Fast position and that you've pressed the primer three times. Also, make sure the wire is securely connected to the spark plug. Inspect the spark plug itself; if it's pitted, fouled, or the gap is incorrect, adjust or replace it. Additionally, check the fuse and replace it if blown. Finally, if your model has a battery, ensure it's adequately charged.
M
markcampbellAug 10, 2025
What to do if Lawn-Boy Lawn Mower engine starts hard or loses power?
- T
  Tammy WilsonAug 10, 2025
  If your Lawn-Boy Lawn Mower engine starts with difficulty or loses power, start by draining the fuel tank and refilling it with a fresh gasoline-and-oil mixture. A dirty air filter element could also be restricting airflow, so replace it. Check the underside of the lawn mower deck for clippings and debris, and clean it if necessary. Finally, inspect the spark plug; if it's pitted, fouled, or the gap is incorrect, adjust or replace it.
A
Alexis BassAug 14, 2025
Why does my Lawn-Boy Lawn Mower engine run rough?
- A
  Angela MacdonaldAug 14, 2025
  A Lawn-Boy Lawn Mower engine might run rough due to several reasons. Ensure the wire is securely connected to the spark plug. Inspect the spark plug itself; if it's pitted, fouled, or the gap is incorrect, adjust or replace it. Also, verify that the throttle lever is in the Fast position. Lastly, a dirty air filter element restricting airflow can cause this issue, so replace it if necessary.
T
Tyler MartinAug 18, 2025
Why is my Lawn-Boy Lawn Mower or engine vibrating excessively?
- A
  Alexandra GallegosAug 18, 2025
  Excessive vibration in your Lawn-Boy Lawn Mower or its engine can stem from a few sources. Start by checking the blade; if it's bent or out of balance, balance or replace it. Ensure the blade nut is tightened securely. Also, clean the underside of the lawn mower deck to remove any accumulated clippings and debris. Lastly, verify that the engine mounting bolts are properly tightened.
D
Dylan WilliamsAug 23, 2025
How to fix uneven cutting pattern with Lawn-Boy Lawn Mower?
- T
  todd49Aug 23, 2025
  To correct an uneven cutting pattern with your Lawn-Boy Lawn Mower, first ensure all four wheels are set at the same height. If the blade is dull, sharpen and balance it. Avoid mowing in the same pattern repeatedly by changing the mowing pattern. Also, clean the underside of the lawn mower deck to remove any accumulated clippings and debris.
A
Anthony Warren MDAug 27, 2025
What causes the discharge chute to plug on my Lawn-Boy Lawn Mower?
- Y
  Yvonne BarnettAug 27, 2025
  A plugged discharge chute on your Lawn-Boy Lawn Mower can occur for several reasons. Make sure the throttle lever is in the Fast position. If the cutting height is too low, raise it. Avoid mowing too fast, so slow down your pace. Ensure the grass is dry before mowing. Finally, clean the underside of the lawn mower deck to remove any accumulated clippings and debris.
R
Rachel JohnsonAug 31, 2025
What to do if Lawn-Boy Lawn Mower does not self-propel?
- T
  tiffany70Aug 31, 2025
  If your Lawn-Boy Lawn Mower is not self-propelled, it may be due to the self-propel drive cable being out of adjustment or damaged; adjust the cable or replace it if needed. Also, check for and remove any debris under the belt cover.

Lawn-Boy 10552 Specifications

General

Engine Type	2-Cycle
Cutting Width	21 inches
Start Type	Recoil
Deck Material	Steel
Drive Type	Self-Propelled
Wheel Size	8 inches

Summary

Lawn Mower Safety

General Lawn Mower Operating Safety

General safety guidelines for operating walk-behind rotary lawn mowers.

Lawn Mower Assembly

Pre-Operation Checks and Fueling

Gasoline and Oil Mixing Procedure

Proper procedure for mixing gasoline and oil for the two-cycle engine.

Lawn Mower Operation

Engine Starting Procedures

Detailed steps for starting the engine using manual or electric start.

Engine Stopping Procedure

Self-Propel Drive Operation

Guide on operating the self-propel feature for easier mowing.

Grass Cutting Guidelines

Cutting Height Adjustment

Lawn Mower Maintenance Guide

Maintenance Schedule by Interval

A schedule outlining maintenance tasks based on usage intervals.

Air Filter Servicing

Instructions for cleaning or replacing the engine's air filter element.

Spark Plug Maintenance

How to clean, inspect, and gap the spark plug for optimal performance.

Cutting Blade Maintenance

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

Mower Storage Preparation

Lawn Mower Troubleshooting Guide

Troubleshooting: Engine Won't Start

Common causes and solutions for an engine that fails to start.

Troubleshooting: Hard Start or Loss of Power

Troubleshooting steps for engines that start poorly or lack power.

Troubleshooting: Rough Engine Running

Identifying and fixing issues causing the engine to run unevenly.

Troubleshooting: Excessive Vibration

Diagnosing and resolving excessive vibration problems.

Troubleshooting: Uneven Cutting Pattern

Troubleshooting: Self-Propel Drive Issues

Troubleshooting steps for the self-propel drive system not engaging.

Warranty Information and Service

Federal Emission Control Warranty

Lawn-Boy No-Worry Warranty Details

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