Hi Sailmike,
The process of accessing this area is simply removing what's in your way so you can see what to do. If you're not sure if this is your cup of tea, get help from a friend or mechanic. With a little confidence, it's not that difficult. I highly suggest you take good quality pictures from multiple angles. Every time you make a change, take more pictures. They'll help you during re-assembly. Before you can fix your problem, you must ensure all hoses are in good condition. Also, check the plastic or metal fittings that all hoses attach to ensure they're not cracked. But without being sure about the hose coming out of the reservoir, you can't continue. I also agree with all previous posts about ensuring the pump is operating. If all else fails, have the button switch tested. I've never heard of the switch going bad, but there is Murphy's law