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Author Topic:   2 Stroke Education
minimontauk posted 01-02-2003 01:11 PM ET (US)   Profile for minimontauk   Send Email to minimontauk  
I am new to marine engines, grew up in a sailing snob family. I have a 96' Johnson 48 HP OB on my 15' Sport CC. This is a standard 2cyl., 2 stroke, carbuerated engine. The previous owner gave me an engine repair manual for a variety of Johnson/Evinrude engines, including the 48 HP. The manual is ok, but a bit confusing to use as you have to wade through a lot of stuff that doesn't apply to my engine. Does Johnson sell shop manuals for specific motors? Any good books out there on Marine engines, controls, and electronics? I want to get some understanding of basic design before I try taking anything apart. Suggestions?
shoctor posted 01-02-2003 01:19 PM ET (US)     Profile for shoctor  Send Email to shoctor     
Many aftermarket companies sell repair/teardown manuals for these motors. Clymer and Haynes are 2 that come to mind right off the bat westmarine or boat us stores sell them. That 48 hp is a pretty common motor and an easy fix. I would either look at local marine store or online to find the manal they are usually like 20 bucks.
kgregg posted 01-02-2003 01:57 PM ET (US)     Profile for kgregg  Send Email to kgregg     
I bought the Clymer book to help me get up to speed with my 91 Merc 135 (my first outboard engine). The book has been very helpful. Kevin
Bigshot posted 01-02-2003 02:37 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Don't wear the shoes where you might not be able to dance.
shoctor posted 01-02-2003 03:30 PM ET (US)     Profile for shoctor  Send Email to shoctor     
Very valid point Big shot!!!! I can still remember thesmile on our outboard mechanics face the first time I brought my old evinrude 9.9 to him in a box of parts saying I can't figure out whats wrong with it. Turns out stuck needle in the carb. I was 14 and he called me up a week later and said to come to the shop with bad work clothes on. Over the process of the next few weekends and a few nights during the week we completely rebuilt the motor top to bottom. Then didn't even charge me for parts or anything. He said he wished he had a son as he was blessed with 3 violin playing daughters. He enjoyed showing me how to work on an engine and that memory and knowledge has stayed with me for the past 10 yrs. Although I don't pay the $60 an hour rate he is still happy to see me come in and buy parts from him. We all have to start somewhere but don't be afraid to ask for help!
Oh and use the book as a guide and not the bible. There are many tricks that come from experience that the book does not tell.
triblet posted 01-02-2003 05:48 PM ET (US)     Profile for triblet  Send Email to triblet     
Well, there were manuals before Bombardier
bought OMC.

I have a Evinrude 90HP of the same vintage. The
manual covers all the V4s and V6s that year,
but they are pretty much the same. There
are some sections that are specific to only
one or some engines.


SaintGeorge posted 01-02-2003 06:09 PM ET (US)     Profile for SaintGeorge  Send Email to SaintGeorge     
OMC (Johnson/Evinrude) documents are available by contacting Ken Cook company. These are the official factory publications, not Selock, etc.

Do a search on the web, you will find them.

I have done full powerhead rebuilds (oversize pistons, etc.) on V6 Johnson motors. I suggest the engine maker's manual as the first choice, along with the part sheet.


Bigshot posted 01-03-2003 09:59 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
E-Bay ALWAYS has Factory manuals on specific engines.
minimontauk posted 01-03-2003 12:57 PM ET (US)     Profile for minimontauk  Send Email to minimontauk     
Thanks, Guys
I found a local Johnson dealer who can order a shop manual for me. I guess what I really want is something like the old "Volkswagen Repair for the Complete Idiot", which was the best repair manual I ever had. I am reasonably adept mechanically, so I guess I'll pick it up over time.

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