Mercury 70hp fuel/oil ratio?

aarrjimlad

Seaman Apprentice
Joined
Sep 11, 2008
Messages
45
Hi
My 1982 outboard is a mongrel, Mercury head unit and mariner leg/lower unit. At present I'm using a mixture of 50:-1, the engine is very responsive and sounds fine but the exhaust is very smokey (blue smoke) is this the correct mixture ratio. The engine has had very little use but had been stored for about 2 -3 years prior to my ownership, does it need a good run to clear any crud from inside the crankcase?:confused:
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Mercury 70hp fuel/oil ratio?

50:1 is correct, Jim.
 
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