Re: Recommended Updates For 1992 Evinrude 60 HP

[DAN ANDERSON]

Joe it can be a little difficult for me to remember every facet of the service bulletin. I have not seen a copy for about 10 years now. Not sure I can get my hands on a copy now. I can tell you what I remember.
1. The exhaust bridge in the exhaust port should be relieved so it doesn’t wear on the rings. This is done by the machine shop doing the re-bore. Just the bridge is reduced & rounded after boring, but before honing!
2. Carburetor H.S, jets were increased in size .002 from stock. This will depend on model and date of production. You can look up the information (MarineEngine.com)to compare what is in the engine now. OMC had two calibration per year. (Early & late production).
3. Top end timing was reduced two degrees. Timing should be checked at 4000 RPMs or above.
4. The over board elbow found on the exhaust cover should be relocated to the top of the block. This ensures the block is full of water before the over board indicator is operational.
5. The water pump should be replaced with kit #432955 which includes new parts to ensure proper temps at idle and blowoff cooling.
(Your 1992 60hp has a different thermostat than the ’93 model previously discussed, but the vernitherm is still located inside the thermostat. It can be removed from the thermostat assy. (Unscrew assembly) and tweaked to be sure it is seating on its seat for proper temps at idle.)
6. The bulletin talks about a new exhaust side cover that is thicker allowing more cooling water between the block & cover, but it is NLA. Some of the ribbing could be removed, but do not make the cover flexible or it will leak?
7. Since this is a pontoon boat aeration of the water is always a problem. Possible overheats can occur at anytime for any length of time? Some are just threshold over heats that may not sound the horn. Water pressure gauge may help, but you have to monitor the gauge!
8. It is important the this engine turn the RPMs it was designed to turn. Prop the engine for WOT even though it will rarely spend time there? Lugging the engine will cause over loading and over heating.
Since the engine is almost 25 yrs old it would seem something has been done right with the engine for it to last this long. Unless it appears to be a low hour engine. To the best of my memory these were the things addressed in the bulletin. Maybe fleetwin or Pappy will chime in if they remember anything else. Hope that helps!
I will be happy to clarify any questions. I have a machine shop guy who has done many of these mods.

Dan in TN