40HP Evinrude hole?

[gemmam]

66 Sea King w/ 64 Evinrude 40 hp Lark<br /><br />I have an open hole (w/ fitting)in exhaust cover on starboard side near the bottom. Another hole is near the top and has a tube going to carb. Question is what goes in botton hole???<br /><br />Also, where might I find the overheat buzzer/light??? I have found the wire and traced it to the dash.<br /><br />Thanks

 

[The Marine Doctor]

Re: 40HP Evinrude hole?

Heat is transfered though a pipe from the exhaust to the carb to release the choke. Works the same as a inboard engine.<br /><br />TMD

 

[gemmam]

Re: 40HP Evinrude hole?

Thanks TMD. I understand. But does the bottom hole just remain open to atmosphere with nothing connected to it and not plugged in any way???<br /><br />Thanks again.

 

[rodbolt]

Re: 40HP Evinrude hole?

hello <br /> yes the bottom hole allows air in, then the exaust heats the air and intake vacum draws the heated air past a choke coil.the system worked really well for its time but if you desire to tinker with it please get a service manual. read heed and belive.