We are trying to find an owners manual for a 1987 HiLo Funmaker that we inherited. Any help would be awesome!

Welcome to the forum!

There is not a manual listed in our library for your 1987 Funmaker but the manuals differ little from one year to the next. Here is a link to a 1990 Classic which will probably work.
http://www.hilotrailerforum.com/f49/...-classic-2016/
If you need manuals for the appliances they are separate from the trailer manuals. They are listed in the library as well. You can many times go to the companies themselves and find the manuals for specific models. I don't know how many years they go back.

__________________
My Great Wife Joyce
2018 Jayco Jay Flight 21QB
Formerly owned 1705T and 2310H
2012 F150 4X4 SuperCrew EcoBoost w/Leer Cap
Reese WD Strait-Line Hitch
Amateur Radio K3EXU

Thank you! I will check it out.

Welcome! You have joined a great group of friendly helpful people.