The above worked, and I thought I'd spell out the steps.
After locating the Finder Application (System/Library/CoreServices/Finder.app),
Change the Finder app with Get Info to allow read/write by your user admin account.
New Control-click the Finder and Show Package Contents.
Look for the default_smart.plist file here:
System/Library/CoreServices/Finder.app/Contents/Resources/default_smart.plist
Copy the file default_smart.plist out to desktop
(save an original elsewhere as well just in case),
edit in TextEdit, and insert the line <key>SearchNameOnly</key><true/>
before the end of that dict grouping here:
<key>SearchNameOnly</key><true/>
</dict>
<key>Version</key>
Then save and replace the file default_smart.plist in it's location:
System/Library/CoreServices/Finder.app/Contents/Resources/default_smart.plist
(you will need to authenticate with a password to save changes to the Finder)
Anyone knows how to accomplish this for Mavericks/Yosemite? – Josep Valls – 2015-06-23T20:21:49.543
Or Sierra? Hmm... – Charlie Gorichanaz – 2017-05-29T19:52:08.727
Set App Shortcuts for Command F in Finder to "Find by Name…" https://apple.stackexchange.com/a/305041/34902
– Ivan Chau – 2019-06-20T16:06:11.477