What year motor & proper fuel mixture

[rogermc]

I just brought this engine and cant wait to fix it up..Mercury Merc 200 20 hp serial#2251547...thanks Roger

 

[sloopy]

Re: What year motor & proper fuel mixture

40:1

 

[Bear]

Re: What year motor & proper fuel mixture

200 (20,0) 1997990 - 2296266 1967 2 cyl <br /> http://www.marinshopen.se/guide/mp/merc30.htm <br /><br />I'd say 1967 and 50:1.

 

[sloopy]

Re: What year motor & proper fuel mixture

hmnn.... I thought merc recomended 40:1 for the hundred ser of engines IE 100 200 300 400 500 ect ect? were'nt they prone to siezing?

 

[Bear]

Re: What year motor & proper fuel mixture

I trust Chinewalker on this one:<br />"As for fuel/oil ratio, 50:1 is fine for most older Mercs back to about 1960, exceptions being the old racing motors.<br />- Scott"<br />

 

[sloopy]

Re: What year motor & proper fuel mixture

ga!!!

 

[dmessy]

Re: What year motor & proper fuel mixture

I've had several of the merc 20 HP of your vintage,,runs great with 50:1. Kinda a pain to work on but will run well forever. <br />Note; ignition system has a grounded kill switch, must be CLOSED(grounded) to run. This is bassackwards from all the rest of the world. Have fun!

 

[Forktail]

Re: What year motor & proper fuel mixture

This might help with oil ratios.....<br /><br /> http://www.goa-northcoastoil.com/tips/obmixing.html