Merc 3.9

Joined
Sep 17, 2002
Messages
2
I have a Merc 3.9, it's a real old motor, probably made in the 60's, and I need a new impeller. I dont know which one to get.<br />Anybody know??<br />Also, what fuel/oil mix would this motor run? 50:1??<br /><br />Thanks
 

catfish

Seaman Apprentice
Joined
Feb 28, 2001
Messages
45
Re: Merc 3.9

if your in the columbus ga area i would not use <br />randll marine for any thing. i have heard a lot of<br />bad things about that shop. with the serial # youm can get the parts you need from any shop.<br /> i know of one in this area that is good and will<br />do you right. :p
 

steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: Merc 3.9

Rat, The NAPA Marine products catalog lists the same impeller for all 3.9 motors their number<br />18-3012 they also list a impeller plate 18-3139
 
Joined
Sep 17, 2002
Messages
2
Re: Merc 3.9

Thanks for the replys!! I'm new to this forum, and quickly finding alot of great info..<br />I just recieved a Seloc repair manual for these motors. <br />Do I need to replace the impeller plate, when I replace the impeller?? Is that a normal wear part like the impeller, or should I wait till I crack it open, and see how the old one looks?<br /><br />The model # is 1742271. <br /><br />Thanks :) <br />Mark<br />Stone Mountain, G***
 

sloopy

Captain
Joined
Jul 12, 2002
Messages
3,000
Re: Merc 3.9

your better off replacing it ;) <br /><br />Good LUCK
 
Top