LeeRoy's Ramblings



Specializing in OMC (Johnson/Evinrude)
2 Cycle Outboard Motor
Info & Repair 1949-2007
Including OMC 5, 6, 8, 9.5 ,9.9, 10, 15/18hp 35/40hp & 70hp
First off I probably should apologize as these outboard motor repair articles started out designed for someone with some basic mechanical knowledge and a small amount of how motors operate.  It has become apparent, because of increased correspondence that an increasingly number who use my articles have almost NO OR LIMITED knowledge of even the principles of mechanical operation of these devises.  Therefore I am in the process of trying to re-write some existing articles, (however this may take some time) or adding other articles directed toward what many of us shade-tree mechanics have taken for granted.  These articles are not meant to replace factory service manuals and I recommend that you DO purchase a manual if you intend to work on any motor other than change spark plugs or gear oil.  My articles may explain examples of what you will run into (& many times goes way beyond the aftermarket manual, BUT DOES NOT replace it).  Here, you have to have some basic mechanical knowledge, be able to read and understand AND be able to apply it, and not be all thumbs.   Again, these are not meant to replace the service manual.  You can many times purchase used manuals off eBay. 

Also there are good repair forums on the internet, one being iboats.com however, if you go to these, PLEASE first use the FAQ sections or do a search of the forum for your problem.  In all probability you may be a newbie to the forum, but your issue probably has came up many times before.  And if you do ask a question, be specific as to the make, year, model & HP of your motor AND give a history of repairs, if any, plus a detailed situation you are experiencing, if these are recurring problems, or if the motor is new to you.  Also when you log on to ask a question, use a descriptive header line, not just "PLEASE HELP" .  Do not expect an immediate response, as any answers you receive will be from other members who have a life off the internet.  If you get no response in a few days, it may be that your question is not worded with enough clarity, OR no one at THAT TIME has a proper answer.  Remember, a bad response answer is worse than no answer at all.   Or you may make another later post changing the title & also rewording the question for better clarity.  And please refrain from posting in a texting type abbreviated, no punctuation format, which is HARD to read when related to trying to really understand your problem, accepting the fact you probably have little knowledge of normal technical outboard motor terms.

And you have to realize that replacement parts for many of these old motors may not available today.  Yes, you may be able to improvise at times, but will it stand up under extended usage and /or possibly leaving you stranded?  Then for you who are tied to a I-Phone or your computer, and have never considered going to a established marine repair shop that may be able to really help you with personal experience and possibly some used parts, so you may be chasing your tail for a long time online.

Now I would like to address another issue, although pretty much in line with the opening paragraph.  I repeatedly get inquiries asking if I would clarify some sections of my articles.  I try to do this almost daily, BUT if you are NOT anywhere mechanically inclined, or have never done any outboard repair, YES things can be totally foreign to you.  My comment back to one man who did not understand my boat related words, was that if a person was writing a computer repair manual, you have to use computer terms.  My suggestion at that point, take it to someone who can fix it.  OR take your repair SLOW, remove a part at a time, take photos & be very observant of what location and what it is connected to BEFORE it comes off.  Then look at my instructions, it now may become a lot clearer to you as you get into your project. 

AND if you do inquire about your specific problem, remember that I do this for FREE and it bothers me considerably if you ask for my expertise and input, BUT give me nothing as to previous repairs that you have already done, OR why you did them.  Then when I reply, you say that you have already done that.  OR you contact me but do not give me the title of my 60+ outboard repair articles that you are referring to.   AND most of these in queries want my response within hours.  Kind of makes me a bit less interested in helping if you are that narrow minded as I flunked mindreading school years ago & learning by Osmosis is rather slow.
  This page links to many sources of current or obsolete/used outboard motor parts.  
1 OMC    History of Evinrude Updated 04-06-19
2 OMC    History of Johnson  New  02-19-12
3 OMC    History of OMC  New  04-07-19
4 OMC    History of Private Brand (House Brands) Outboards  New  04-07-19
5 OMC    How to Flush / Test Run an Outboard Motor, Off the Water  New  06-09-18
6 OMC    OEM or Aftermarket Outboard Motor Parts?  Updated 05-28-17
7 OMC    OMC Paint Color Match For Year New  04-16-19
8 OMC    Evinrude Model/Year Code Identification 1913 - 1979 Updated 11-30-14
9 OMC   Johnson/Evinrude Year/Model Code Identification 1979 - 2007 New  08-12-11
10 OMC    OMC Miscellaneous Motors / Sail Drives & Military Motors  New  01-13-15
11 OMC    Online OMC- Johnson/Evinrude Non factory Service Manual 1971-1989 New  09-16-17
13  OMC    Spark Plug Identification & Cross Reference Codes New  07-07-13
14 OMC   Troubleshooting Many OMC & Other Outboard Motors Updated 04-11-19
15 OMC     Rehubbing a Damaged Obsolete Prop for Small Outboard Motors New  08-13-17
16 OMC     Carburetor Repairs for Small Outboards  Updated 07-07-17
17 OMC     OMC Fuel Ratio Controversy  (1985-1988)  
18 OMC    Johnson/Evinrude Magneto Ignition (Numerous Models & Years) Updated 12-14-14
19 OMC    Johnson/Evinrude 10 hp QD Series Motors "Sportwin" 1949 - 1963 Updated 04-07-18
20 OMC   Johnson/Evinrude 15 E & 18hp FD "Fastwin" Series 1956 -1973   Updated 01-07-18
21 OMC    Johnson/Evinrude 9.5 hp MQ Series Normal Repairs  1964 - 1973 Updated 03-31-179**
22 OMC    Johnson/Evinrude 5 hp LD Series "Angler" 1965 - 1968  Updated 09-04-17
23 OMC     Johnson/Evinrude 4 hp   1969  - 1978   New  01-17-18
24 OMC     Johnson/Evinrude 5.5 hp CD Series  1963 - 1964  New  05-05-19
25 OMC    Johnson/Evinrude 6 hp CD Series "Fisherman" 1965 - 1979 Updated 01-01-19
26 OMC     Johnson/Evinrude 4.5 / 7.5 hp   1980 - 1983 Updated 04-30-17
27 OMC   Johnson/Evinrude 6 / 8 hp 1984 - 1990 Updated 09-18-19
28 OMC     Johnson/Evinrude 6 /8 hp 1984 - 1990  Modify for Flush Adapter Updated 09-18-19
29 OMC    Johnson/Evinrude 6 / 8 hp 1991 - 2005 Updated 09-04-17
30 OMC   Johnson/Evinrude 9.9 / 15 hp  General Info & Normal Repairs 1974 - 1992 Updated 11-05-19
31 OMC    Johnson/Evinrude 9.9 / 15 hp  Powerhead / Midsection Repairs Updated 11-08-17
32 OMC    Johnson/Evinrude 9.9 / 15 hp  Carburetor / Fuel Pump Repairs Updated 11-15-17
33 OMC   Johnson/Evinrude 9.9 / 15 hp  Gear Box / Water Pump Repairs 1974 - 2007 Updated 02-06-18
34 OMC    Johnson/Evinrude 9.9 / 15 hp  Water Circulation Problems 1974 - 2007 Updated 03-26-18
35 OMC    Johnson/Evinrude 9.9 / 15 hp  Converting Shaft Lengths 1974 - 2007 Updated 12-15-14
36 OMC    Johnson/Evinrude 9.9 / 15 hp  Converting to Electric Start 1974 - 1992 Updated 12-15-14
37 OMC    Johnson/Evinrude 9.9 / 15 hp  General Info & Normal Repairs  1993 - 2007 Updated 06-27-15
38 OMC    Johnson/Evinrude 9.9 / 15 hp  Converting to Electric Start 1993 - 2007 Updated 12-15-14
39 OMC    Converting Johnson/Evinrude 9.9/15 hp to Hydraulic Power Tilt Updated 08-11-17
40 OMC    Johnson/Evinrude 35 / 40 hp  "Bigtwin" about 1965-1977 Updated 08-28-17
41 OMC    e-Bay Purchased Motor, Rebuild & Why it Blew a Piston After a Rebuild Updated 12-15-13
42 OMC     Rebuilding the OMC pre 1987 Fuel Pump Updated 12-15-14
43 OMC    Rebuilding the OMC post 1987 Fuel Pump Updated 12-15-14
44 OMC     Converting the Old Dual Fuel Line pre 1959 to the New Single Line Updated 04-07-17
45 OMC     Converting a 70 hp Console Control Motor to Tiller Control Updated 12-15-14
46 OMC    Outboard Motor Trim / Tilt Motor Replacement Updated 12-15-14
47 OMC    Problems in Converting a 2012  25 HP Evinrude E-Tec to Long Shaft  New  05-06-17


The above numbering system may change from time to time when I add articles

Most all articles here are Copyrighted from 1994 to 2019 by LeeRoy Wisner


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Originated 01-10-2013 Last Updated 05-05-2019                              
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