OK hope you can see these pix.....
https://www.dropbox.com/s/4hum32lrkjn3s ... s.jpg?dl=0PS #s 43 are the pivot housing drains on that side, but there's a better pic to follow...
https://www.dropbox.com/s/pnxkaf506wvau ... 1.jpg?dl=0https://www.dropbox.com/s/mtmbog9eu3t6o ... 2.jpg?dl=0if you plan on changing the gear oil, you must do it the right way, there is a dipstick on the top of the upper gear unit, there is a fill plug near the joint between the upper and lower gear units, and the drain is the lower most plug on the front of the lower gear housing. See better in my pics, but this is the procedure. Note: Most Cobras take about 2 qts of gearcase lube, some of the 4 cyl units take a little less. DO NOT FILL FROM THE BOTTOM DRAIN. It will leave you with an air bubble, under-filled drive and ruin the upper gears.
http://www.crowleymarine.com/support/te ... lling.htmlAlso the gaskets for the drain, fill and dipstick plugs should be changed each time. I get most of my stuff from a local Evinrude dealer, but Crowley Marine is very good.
there are more articles on OMC Cobra maintenance here on the Crowley website:
http://www.crowleymarine.com/support/tech_articles.htmlGo to the OMC Cobra section, there are pix also of winterizing points that are better than some of mine....
Because its not that easy to find techs that really know these I've had to learn all this to keep it going. However, comparing the Cobra to the Alpha, there is no doubt in my mind that the Cobra was the superior product. In that:
Quieter, they do not whine like Alphas
When set up properly they shift better
Holds more gear oil, no need for a drive shower
Impeller much easier to replace
Bellows much easier to replace
ESA system does not kill engine while shifting (can stall it on an Alpha) OMC used the ESA module which lowers the RPM from 600-->400. Never had stalling problems with the OMC ESA system.
You need: a good shift cable, properly adjusted with the OMC tools. Its not rocket science and I have not felt any need to change to a different drive system as long as I can get parts.
Now no more discussion of winterizing, its August 18th and hot as hades out.