No difference. In subsequent later years OMC combined the manuals. 120-155-210 or 4-6-8 essentially the same, except for gear ratios.
What this manual doesn't cover is illustrated parts, which you really need if you are going to attempt to reassemble and use this 4-cap unit with any chance at all of finding the correct parts. And even then you are facing a night-marish, up-hill, prolonged battle.
The reason most sane people (who know OMC electric shift drives) run from the 64-67 drives is simply OMC made so many minor but important, evolutionary service and reliability improvements, from 1968 to 1977 on the electric stringers. (Except smart people run even faster from the 62-68 DU-series (smaller) drive!). OMC's devotion to product improvement was fanatical, yet effective.
Nothing is impossible (given enough time & dollar resources) but I would highly encourage you to find the correct (for your boat/engine) sterndrive unit, that when properly rebuilt will provide a lifetime of reliable service. It may indeed exceed you budget, but if done properly it will exceed your expectations. It is indeed unfortunate that "Someone" along they way messed up your boat's "pedigree." But know you are armed with the knowledge to un do their mistake (or not.)
Been there.... Done that.
Lee
________________________________
From: omc-boats-bounces@... [mailto:omc-boats-bounces@...ultimate.com] On Behalf Of BLDFW
Sent: Wednesday, May 27, 2009 1:33 PM
To: omc-boats@...
Subject: [OMC-Boats] Manual question
Aside from perhaps a ratio difference, is there any other significant difference between a 120hp and a 155hp OMC Factory manual if they are the same year or in the 64-67 span?
-Bill
Dallas, TX
1970 Evinrude Explorer - 155 Buick V6 - OMC sterndrive
http://www.photobucket.com/evinrude_explorer
Received on Wednesday, 27 May 2009
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