Guest ThisPlaceSucks Posted May 17, 2011 Report Share Posted May 17, 2011 hey guys! a friend of mine has been trying to get a vintage outboard working and is finding some elements of the mechanics difficult. i know some of you older gents have likely seen them... the brand is a "Ted Williams" 7.5hp and it's got a tecumseh motor. his first question is if his model is air cooled? apparently some of them are and he can't seem to figure it out... his second question is what spark plug model and gas mix he should be using with it, as he cant' seem to find any info anywhere... thanks for any info you guys have. Link to comment Share on other sites More sharing options...
skinny Posted May 17, 2011 Report Share Posted May 17, 2011 not that I'm a buff but had some time looked around on google it was sold by sears it is air cooled and should use a champion H12 plug from what I found see if you can get photos also when I was looking for info on my 1966 evin rude I used Iboats with success Link to comment Share on other sites More sharing options...
Old Man Posted May 17, 2011 Report Share Posted May 17, 2011 (edited) If I'm not mistaken, they were made by ESKA and sold under various brand names through different retail chains. The info I have for the 7.5 HP ESKA shows it was made from 1970 to 1987 and used a Champion RJ14YC plug or a NGK XR5 plug gaped at .030". It is water cooled, even though the heads are finned like an air cooled. The water cools the leg and the lower portion of the cylinders and bearings. Info I have for it shows older 7.5's at 20:1 and newer at 50:1. The difference in these is probably due to the newer 2 stroke oils being better than the old oils. A mix of 40:1 should be safe with the newer oils. Edited May 17, 2011 by Old Man Link to comment Share on other sites More sharing options...
Fisherman Posted May 17, 2011 Report Share Posted May 17, 2011 hey guys! a friend of mine has been trying to get a vintage outboard working and is finding some elements of the mechanics difficult. i know some of you older gents have likely seen them... the brand is a "Ted Williams" 7.5hp and it's got a tecumseh motor. his first question is if his model is air cooled? apparently some of them are and he can't seem to figure it out... his second question is what spark plug model and gas mix he should be using with it, as he cant' seem to find any info anywhere... thanks for any info you guys have. I wonder if he knows which end goes in the water. Take the cowl off, if it looks like a lawnmower engine with the fins, it's air cooled, no fins, water cooled. Link to comment Share on other sites More sharing options...
solopaddler Posted May 17, 2011 Report Share Posted May 17, 2011 If I'm not mistaken, they were made by ESKA and sold under various brand names through different retail chains. The info I have for the 7.5 HP ESKA shows it was made from 1970 to 1987 and used a Champion RJ14YC plug or a NGK XR5 plug gaped at .030". It is water cooled, even though the heads are finned like an air cooled. The water cools the leg and the lower portion of the cylinders and bearings. Info I have for it shows older 7.5's at 20:1 and newer at 50:1. The difference in these is probably due to the newer 2 stroke oils being better than the old oils. A mix of 40:1 should be safe with the newer oils. Hey you should be a weatherman! "Todays forcast: sun, with a possibility of clouds. No rain on the horizon, but we might see the odd shower". Ambiguity is an essential skill. Link to comment Share on other sites More sharing options...
Old Man Posted May 17, 2011 Report Share Posted May 17, 2011 (edited) Now I remember why I don't bother posting here too often, too many. Edited May 17, 2011 by Old Man Link to comment Share on other sites More sharing options...
HTHM Posted May 17, 2011 Report Share Posted May 17, 2011 Send a PM to Boatman, he is our resident old outboard expert. His depth of knowledge is admirable Link to comment Share on other sites More sharing options...
mercman Posted May 17, 2011 Report Share Posted May 17, 2011 Now I remember why I don't bother posting here too often, too many. I wouldnt be too hard on the place. Once ya sift through a bit, the majority are really great people here. At least you made an effort to be helpful, and that was appreciated i'm sure. Paul Link to comment Share on other sites More sharing options...
Terry Posted May 17, 2011 Report Share Posted May 17, 2011 Send a PM to Boatman, he is our resident old outboard expert. His depth of knowledge is admirable I don't think he meant it as an insult in any way Link to comment Share on other sites More sharing options...
kickingfrog Posted May 17, 2011 Report Share Posted May 17, 2011 This might be in berrnie's wheel house. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now