You're absolutely right. The older OMC engines don't work with the 'earmuff' style flushers. Unfortunately, it seems the last company that made flushers for forties has discontinued them, but if you can find a Tempo 917TFA it will fit. Of course, you can use a bucket as long as you get the waterline up above the seam in the lower unit.<br /><br />Just behind the prop a 'fin' hangs down from the cavitation (or anti-ventilation) plate above it. The hole in the back of the fin is where exhaust comes out, and the screened area on the front of it is where the water goes in. It goes behind the long thin cover with holes in it right above the cavitation plate, then up to the water pump on the top of the lower unit. The proper flusher fits onto the fin.<br />Hot cooling water exits through the large hole on the back of the mid-section once the engine warms up a bit. Before that, only a little water will come out that hole.<br /><br />Hope that explains it!<br /><br />Evinrude Model 35531<br />Year: 1962<br />HP: 40<br />WOT RPMS: 4500 (4000-5000rpm range)<br />Displacement: 43.9 CID<br />Cylinders: 2<br />Weight: 131 - 155 lbs<br />Gear Ratio: 12:21<br />Lower unit oil: If manual shift, OMC/BRP 'HiVis' or equivalent 80/90W outboard gearcase oil. If electric shift, OMC/BRP 'Premium Blend' *only*.<br />Fuel/Oil mix: 24:1 87 octane to TC-W3 rated outboard oil. (Have a look at the oil mix FAQ in the FAQ Forum)<br />Spark plug: Champion J4C gapped at .030" (J6J is no longer available)<br /> Picture<br />From the Old OMC Site<br /><br />Great engine, by the way! Parts are nice and inexpensive for it.<br /><br />EDIT: I was scanning Ebay and saw this:<br /> Ebay auction, click here.
