The toilet should be mounted by a normal (like the one in your house) toilet flange, but instead of being at floor level it is on that raised platform; the platform is actually the top of the black waste tank. Some toilets have an extensive lower housing which hides the hold-down bolts. This may help understand how things are put together, but I agree with the other members' troublehsooting assistance... under what conditions does it leak, what model is the toilet...
Is this a rear-gaucho (B1700RGS or B1700RGH; bathroom opposite door), or a side-gaucho (B1700SGS or B1700SGH; bathroom in rear corner)? Does it have a water heater and shower (B1700RGH or B1700SGH; bathroom lined in moulded plastic or fiberglass)? This would help in explaining what is where.
1979 Boler B1700RGH, pulled by 2004 Toyota Sienna LE 2WD
Information is good. Lack of information is not so good, but misinformation is much worse. Check facts, and apply common sense liberally.
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