I have a 922B that I bought last summer. It is a great little machine. But when I went to start it up after sitting throught the winter, the Hydraulic's did not work at all. My dad tore the the tank apart and changed the filter, he thinks it may have just lost its prime over the winter. However we are not sure how to get the system primed up again! Has anyone here had any experience with 922B hydraulic tanks and pumps. We could sure use some advice!!