take the cap of the top of the agitator you need a 10mm socket
on along extension bar undo the bolt in the bottom of the agitator and it will lift out replace by do-ing the reverse process
i have just done it better than paying $100.00 for a service call
for five minutes work
On my hoover 200m (top loader) I had a similar problem. I turned off the machine & unplugged it. Closed water taps both hot & cold. Manually emptied machine with large cup. Undid bottom outlet hose by unclipping.The residual water will come out! I undid the 3 screws on the control panel. Tilted the control panel forward. The water level is manual control using a diagaphram pressure control to set water level. This had a hose. I disconnected both ends and used a bicycle pump to blow air thorough it. Underneath I disconnected where the hose goes into machine (clips) and also blew air from the top to check it was clear. After reconnecting everything the machine now does not stop filling and does not overflow anymore. Hope this helps.
http://www.youtube.com/watch?v=_a87KTHws2M First try turning off the machine for 30 minutes. Re-plug. If nothing happens. Disconnect from mains. Then check your inlet valve. Shut off valve, switch off machine & see if the water comes full flow. Check the fine filters on the machine inlet entry, they could be blocked, clean out. The FH indicates a fill failure and this is usually caused by a bad water valve, flow meter or pressure switch. One key to determining the cause of the FH error is how fast the error comes up in a cycle. If the error appears within 1 or 2 minutes then the most likely cause will be the water valve or flow meter. If the error doesn't appear for several minutes then the pressure switch can be the source of the problem. There is a slim tube going up from the filter area to a switch near your control board or panel; it leads to the pressure switch - it should not be blocked or leaky - ie.with holes. Both water valves must be turned on and working. Even if a cold wash is selected at some point during the fill the hot water valve will be energized and if there is no water then the FH error will show up. Sometimes a consumer will turn the hot water valve off to save energy but you can't turn one valve off on some washers. Inlet valves can be purchased thru searching this site and fitted by you easily. Just noted that your machine is a top load; anyways, click if helped.