Re: Trim/Tilt problems
A 1988 85HP can use any variant. I have never seen anything 90HP or less blow out the internals from back pressure. The basic design didn't start getting into trouble until it went over 100HP. rebuild it, swap it , or replace it. All choices are available. The best solution depends upon the condition of you electric motor, your budget, your time frame. Before deciding what to do about valve body, inspect your motor for rust stains. If rust is developing in the seam between magnet and reservoir or around the washers on top bolts ... then you should replace your motor at same time as valve body. It takes slightly less time to replace a pump assembly than just the valve body. If you do the valve body and your motor fails mid season then you have to do it all over. The oil tubes are a pain and every time you mess with them you risk stripping a thread. So if your motor is showing traces of rust then replace the pump as a whole. Save time, save money, be done with it.
As regards your 1988 85HP. You can use any valve body. Presotile designs did not start getting into trouble until they went over 100HP. You can use anything. Even the new ones for $150-$250 should be fine with 85HP. There is only one factory making them. No matter who you buy from and no mater what price you pay it will still be the exact same thing. I would not trust a new one to last a long time on a big engine. The internal aluminum is too soft. But 85HP? Surely it can do that? I think. My luck with chinese machines has not been good but I'd bet one of those chinese valve bodies would go at least 5 years on an 85HP. Just hit ebay and search for " (valve,pump,motor) Force tilt " if you use trim then you get a bunch of auto parts in your search result. So try tilt first. You should find everything with prices from $90 to $500. My target would be under $150 valve body and under $250 pump ay. Your 85hp can use anything.
) as far as I know it has original trim. Also, can give you model no: 856x8a.