smoke from lower unit

[mellocj]

I got my '63 75hp Evinrude running today, after replacing the impeller and getting the lower unit back on. I had to start it at fairly high throttle, and it wouldnt go all the way down to minimum throttle, so I think I need to clean the carbs. Fortunately, there was water from the exhaust hole, and the head didn't get too hot to touch.<br /><br />But, I noticed a lot of smoke coming from the lower unit. I had the bottom of the motor in a big bucket of water, and could see lots of smoke coming out of the water. What could this mean? I know I need to at least change the fluid/oil in the lower unit. <br /><br />Thanks<br /><br />Mark

 

[12Footer]

Re: smoke from lower unit

It sounds normal. If you think it's time to check the lower unit, (and you are right,if you don't know how long it has been since it has been chcked), click on this link;<br /> http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=17;t=011919

 

[mellocj]

Re: smoke from lower unit

Does some engine exhaust come out the L/U? While I am not a boat expert yet, the amount of smoke that came out didn't look normal. Thanks

 

[sho305]

Re: smoke from lower unit

Maybe it was flooded with fuel(premix) when started and then will smoke for a minute. I would check your linkage for the throttle and make sure it is working right.