I have an old well functioning Honda HR 215 mower. One wheel is wobbly and need to be tightened. However, I have not been successful in preventing the bolt on the inside of the wheel from turning when I turn the bolt on the outside. Any recommendations would be greatly appreciated. The bolt on the inside appears to be just like a flat washer type bolt. I have tries to get a wrench, screwdriver, and vicegrip inside to prevent turning, with no luck.
Thanks, Jim