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 Black and Decker ST4500 12" Trimmer /Edger Parts

Repair Guides
Line Trimmers 101

This article explains the basic types and features of line trimmers, and it also offers purchasing guidelines for line garden trimmers.

Tool Diagnosis: Is it the Brushes or the Switch?

This article describes the differences between power switch and carbon brush failure symptoms.

How to Remove a Trimmer Clutch

This video explains how to remove the clutch from most line and string trimmers. Tips are provided for removing tricky clutch drum screws.

Lawn and Garden Machines and Power Tools

This article lists the major categories of lawn and garden tools and machines, explaining the basic applications, types, and features of each.

Accessories for the Black and Decker ST4500

Questions & Answers

How do you remove the head so you can put a new string feeder on .
B for model number electric st4500
Hello B, Thank you for the question. Here is a link to a How to Video that may help. Good luck with the repair!
how do you remove the fan from the motor shaft ST4500 ?
rj for model number ST4500 type 5
Hello RJ and thank you for writing This video link will help.
Discussion for the Black And Decker ST4500 12" Trimmer /Edger

Discussion is closed. To ask our experts a question about a part, use the Q&A feature on our product pages.
Question: Frustrated Lawn Keeper


I have a Black and Decker trimmer, model ST4500 type 4. I am wanting to replace the string spool with something that doesn't break constantly, something like blades, etc. Anyone have any suggestions and where I could find something like this. The string on my trimmer always breaking is making my yard work exasperating! Thanks for your help!
Hello 1093318,

I don't know of any other type of head you can use on that trimmer. You might try a different brand of string. Instead of using the round style, try using 5-sided,square or twisted. But make sure you use the the correct gauge you trimmer uses.

Hope this helps,
7036 South High Tech Dr.
Midvale, UT 84047
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