The steering tiller positioning mechanism consists of two plates with metal teeth on them that mesh together when the tiller positioning knob is tightened. But if the knob is not fully tightened and then the steering tiller is pulled or pushed on repeatedly, eventually the metal teeth will wear down and then the tiller won't stay in position no matter how much you tighten the knob.
When these teeth wear down, the steering tiller adjustment joint can be easily replaced.
To replace it, remove the nuts and bolts holding the steering tiller adjuster below it and above it. The defective steering tiller adjuster can then be easily replaced.
Call or email our Customer Service to report the issue and we can order replacement parts if needed.