If you live in a humid environment, the moisture will attach itself to the cable and work its way down inside of the sheath. Rust begins to develop inside the sheath and then the cable will become stuck.
You can try to put some WD-40 or cable lube into the cable sheath and let it soak for a while. This may loosen up the cable slowly. If it is still stuck, it will need to be replaced.
A good small engine repair shop will lubricate all the cables on your self-propelled lawn mower during your spring tune-up. This important item will save money on maintenance and not having to buy new cables. The safety bail cable is not that expensive, but the drive cable and installation is normally much higher depending on where the cable is located.
As with anything, prevention is the key to making your lawn mower work well each time that you need it. Your lawn mower works in a very dusty, dirty and humid environment each time you use it and taking proper care of it is key to not fighting an ill running machine.
If you need help with replacing your Self-Propelled lawn mower safety bail cable, visit our Locations page for help.