To fix a hard to turn faucet handle, several steps should be taken:
• Unscrew the handle and remove it.
• Check for corrosion at the stem and replace if necessary.
• Apply plumber’s grease on threads of stem assembly before replacing.
• Reinstall, tighten securely with wrench and ensure proper fit of washers and o-rings.
Finally, reattach the handle to complete the repair process.