Which spark plug?

[craigman]

Fellas,
​what spark plugs should I be using in a 1978 Merc 110 9.8hp?
Also what gas/oil mix ratio should I use?
Thanks!
Craig

 

[Yegboats]

hmm buhw-2 for serial range 4839254-5206549
50:1

 

[craigman]

Thanks for the info Yegboats!