Re: Exhaust Elbow
According to this it's for the various GM models, don't see the YSM listed - doesn't necessarily mean it won't work though....
YANMAR MARINE ENGINE | Exhaust "U" Riser Mixing Elbow 2GM20 2GMF | 128270-13600 from the ShipStore.com ™ on-line catalog.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)