Simple fork seal change on Beta 290 2009. Note the other fork will have the spring internals but changing the seal is still the same process. Take note of what order the spring internals come apart.

Oil level is 120mm on spring side and 60mm on the other. Oil should be measured with fork leg fully compressed.
5w fork oil not 7.5 as stated in video.

This method of changing the seals roughly the same on most trials bikes.