Took our new 1810H out last month and had just a wonderful time. Lots of questions but took the hilo cd and laptop, must have viewed it a dozen times. When we got home neither of us could remember nor find out about the three positon switch located next to the up and down switch.
Down is for operating the top up or down
Middle position is .......?
Top position is for .......?
If you can help us out, we will put note next to the switch in case we have another senior moment. thanks and best wishes, Bill & Barbara, Snoqualmie WA

Thank you for your kind reply. Also learned not to leave the manual in the HiLo. best wishes, bill