oil mixture rdl-23 jonhson seahorse 40hp pls

[nikos73]

hey, i just came across a rdl-23 jonhson seahorse 40hp can someone pls tell me the correct fuel to oil mixture due to i have been told two or three different mixuters can can u also tell if these older moters spit water out while they are running as the newer moters do.<br /><br />please some help me.

 

[JB]

Re: oil mixture rdl-23 jonhson seahorse 40hp pls

Howdy, SH.<br /><br />Welcome to iboats. <br /><br />Your engine is a 1961 long (20") shaft.<br /><br />Fuel mix, per OMC, is 24:1; 1qt TC-W3 outboard oil per 6 gallons gas or 250ml oil per liter of petrol.<br /><br />Good luck. <br /><br />There is no tell tale stream from a RD, the water comes out mixed with the exhaust.

 

[cknadroj]

Re: oil mixture rdl-23 jonhson seahorse 40hp pls

I have an RDSL-23 40HP and it calls for 50:1 ratio.<br /><br />No tell-tale peeing on these unfortunately. The hole in the back is an idle relief to let off exhaust pressure at idle. However, I believe you should always see 'some' water spitting out of the idle relief.

 

[cknadroj]

Re: oil mixture rdl-23 jonhson seahorse 40hp pls

Maybe I run mine to thin - have not had any problems though - I think I'll try 32:1 for a while.<br /><br />Sorry if I misdirected anyone - got my info here:<br /><br /> http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=28;t=028919#000000

 

[JB]

Re: oil mixture rdl-23 jonhson seahorse 40hp pls

I strictly avoid recommending anything other than the maker's specification.<br /><br />No pre-1964 OMC product "calls for" a 50:1 mix.<br /><br />As Paul Moir told you, OMC said 24:1. Go leaner at your own risk.

 

[nikos73]

Re: oil mixture rdl-23 jonhson seahorse 40hp pls

thanks guys i will try it and get back to you all<br /><br />regards Snapper Head

 

[nikos73]

Re: oil mixture rdl-23 jonhson seahorse 40hp pls

thanks guys for the help i will try 32:1 mix for a while but i have another question if thats alright what is the best way to tune the carby cause it idles okay but will not rev out .<br /><br />regards snapper head <br /><br />once again thanks to everyone for there input.<br />cheers

 

[Joe Reeves]

Re: oil mixture rdl-23 jonhson seahorse 40hp pls

No offense intended towards anyone here of course, but OMC came out with a bulletin when the 50/1 oil came into existence which (cutting to the bottom line), read somewhat like the following.<br /><br />Any of OMC's engines which have powerheads consisting totally of needle, roller, and ball bearings pertaining to their main bearings, connecting rod bearings, wrist pin bearings, may use the 50/1 fuel/oil mixture safely.<br /><br />The 1961 40hp Evinrude/Johnson falls into the above catagory and may use the 50/1 mixture.<br /><br />However any engine that incorporates a bushing type bearing, whether it is a main bearing, connecting rod, or wrist pin bushing should use its original recommended mixture, stated at the time of manufacture.