1969 Evinrude 33 HP 33953A Questions???

[mrloring]

1969 Evinrude 33 HP Model 33953A<br /><br />First I bought this motor yesterday for $150 and had it hooked on the boat and running in less than an hour.<br /><br />Does this motor have a telltale? Can't seem to find one. If not how can I tell if it is pumping water properly? <br /><br />My controls from my 1989 Johnson 28 SPL hooked up but the key or kill switch does not shut off the engine is there anyway to fix this?<br /><br />I plan on buying an OMC service manual ($16.00 on Ebay), but for now I need some specs. Weight, gear ratio, what do the different model numbers mean for this year, and how many amps is the charging system?<br /><br />Was this motor offered in a 15" model? If so where would I look to find those parts to convert mine is a 20"?<br /><br />Thanks for all the help. If not for this site I would have never bought a 36 year old outboard?<br /><br />P.S. It looks so much better on my 1959 Cutter Runabout, than the modern looking 1989 Johnson? Vintage OMC's are so cool.

 

[Paul Moir]

Re: 1969 Evinrude 33 HP 33953A Questions???

Sounds like a good deal!<br /><br />The engine does not have a tell-tale. But all the cooling water flows out through the large hole in the back of the midsection, along with the idle exhaust. You should see water coming out soon after you start the engine.<br />There ought to be two light gauge black wires coming from the engine. One may have a white stripe. Connect one of these to the 'M' terminal and the other to the other 'M' terminal. Probably one of these is wired to ground - remove that wire.<br />The engine weighs between 134 and 156 lbs depending on options (starter, longshaft, charging system). The gear ratio is 12:21, same as all the Big Twins. The different model numbers indicate if it left the factory as a longshaft and electric start. Your model number indicates both I beleive.<br />The outboard may not have a charging system. If it does, there's a generator on the port side of the carburetor which looks like the starter. It's connected to the flywheel by a toothed belt. Those generators are fairly week and only supply 10 amps at full throttle. Beneath about 1500 rpm they don't supply anything at all.<br /><br />The engine was offered in a 15" model. To convert yours to a 15" you'll need to obtain a driveshaft exactly 5" shorter, a shift shaft for the lower unit that's 5" shorter, and a 5" shorter stainless bolt for the lower unit to midsection connection.<br /><br />If you're handy with metal, you may be able to cut your shift shaft 5" shorter and form a groove in it yourself. That would be good as you wouldn't have to disassemble the lower unit then. Careful not to get it too hot though while working it. <br />The driveshaft can be safely pulled out of the lower unit. Although you should have no trouble finding a shorter driveshaft, if you do you could take your existing shaft to a machine shop and have them cut & respline it. <br /><br />The water pump tube has a 5" extension installed which is simply pulled off. It might need some penetrating oil to encourage it along.<br /><br />Naturally, you simply discard the extension peice between the lower unit and the midsection.<br /><br /><br />Welcome to the club!