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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 13581
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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Vince, I have a Ryobi RY40021 and have ordered a replacement

Customer Question

Hi Vince,
I have a Ryobi RY40021 and have ordered a replacement string head assembly but I no idea how to get the old one off and new one on. Thanks
Submitted: 2 years ago.
Category: Small Engine
Expert:  Vince O. replied 2 years ago.
Hello,I'm not familiar with that model and could not find much info.Let me opt out so someone who knows about it can help you
Expert:  Curtis B. replied 2 years ago.
The electric trimmer head is just pushed onto the shaft. It has no physical retainer, it just pushes on and pulls off! The motor shaft is just a straight,smooth shaft. Take two screwdrivers , one on each side of the existing head and pry it off! Nes one just push in into place.