How often should I change my front fork oil on my CB550K / CB550F / CB500K? Brenden December 17, 2018 05:58 Follow Every 5,000 miles / 8,000 km or once a year, whichever comes first. Related articles What type of fork oil and how much fork oil should I use in my CB550K / CB550F / CB500K? Parts That Will Need Replacement On A Vintage Honda Project Motorcycle aka The "Laundry List" How to rebuild the Honda CB550K & CB550F internal spring without dampening rod forks Check our general maintenance section for more topics! How to rebuild the Honda CB500K internal spring with dampening rod forks Comments 0 comments Please sign in to leave a comment.