Re: 5.0 yamaha stern drive risers
Risers are $286.63 each, which includes the do-it-yourself gasket kit. That metal you found in the exhaust is the snout that use to be part of the risers. You boat can't be any newer than 95, since that was the last year they were installed in boats. If the risers have been used in salt water and haven't been replaced since new, they are long past time for replacement. The problem you are having with getting water to the pump when flushing is common when you don't use a flush attachment that can deliver enough water. The rev'ing the engine to get the pump primed when first launched is suggested by Yamaha to get the prime going. If the pump hasn't been checked or rebuilt in the past few years, its also past time. You are correct in that it is a Sherwood pump built for Yamaha and are getting rare. They are no longer available from Yamaha but some Sherwood distributors have a few left. I have one new one and one almost new one left.
