Ryobi RY40109 20" Mower Blade Replacement

Written By: Jim Keplinger

Comments: 0

Ryobi RY40109 20" Mower Blade Replacement

Difficulty

Easy

Steps

Time Required

15 - 30 minutes

Introduction

Operating your mower with a dull blade can be hard on your lawn, leaving the grass tattered or torn rather than cut. This will cause it to look yellow and restrict healthy growth. Also, a damaged blade can be a danger to the operator or nearby people.

Replacing the blade isn't difficult and is a task that anyone should be able to complete in 15-30 minutes. There are some things to keep in mind as you start this project though. You will be working with a sharp object (the blade), so using a pair of heavy-duty gloves, removing the battery, and carefully blocking the blade are important safety measures to keep in mind as you start your work.

Once you've completed the replacement, I recommend mowing your yard right away and experience the satisfaction of your crisply mowed lawn!

Tools

Parts

Ryobi 20" Lawn Mower Replacement Blade-part #AC04020

Step 1

Before working with the blade, remove the battery.
Firmly grasp the battery, depressing the battery release and slide the battery out.

Step 2

Turn the mower upside down on a flat, stable surface.

Step 3

Preventing the blade from spinning is an important safety step!
Use an 8" to 10" block of 2x4 to prevent the blade from spinning counterclockwise.
You may have to experiment a bit to position it correctly.

Step 4

Protect your hands by putting on your heavy-duty canvas gloves while working around the blade.
Using a 15 mm socket wrench, remove the blade nut by turning it counterclockwise.