My outdoor Harbor Breeze fans do not operate at high speed. They are in slow motion and I can't locate any pull devices to change the speed. Any suggestions?

Are they remote fans?

General ceiling fan troubleshooting and help FAQ- Ceiling Fans N More (http://www.ceiling-fans-n-more.com/ceiling-fan-general-troubleshooting-and-FAQ.php)

Yes they are remote controlled fans that are 1 year old.

What happens when you attempt each respective speed?

Ceiling fan blade balancing issues - Ceiling Fans N More (http://www.ceiling-fans-n-more.com/blade-balancing-issues.php)

Ceiling fan remote controls - help and FAQ- Ceiling Fans N More (http://www.ceiling-fans-n-more.com/ceiling-fan-remote-controls.php)

They move somewhat faster... medium looks to be faster than high!!

Sounds like the capacitors in the receivers went bad.. . Replace the receivers.