30 hp not running right

[surfcaster]

I bought this 86' 30hp Mariner engine, ordered the Seloc Mariner manual that covers 2 - 60hp 2 stroke models....It wasn't long before I discovered that based on S# it's actually totally made in Japan by Yamaha....The illustrations in the Seloc match my engine except that the spark plug gaps show .024 for the Mariner and .035-.039 for Yamaha (spec from 86' Yam owners manual).

Any ideas on correct spark plug gap?

I replaced fuel pump, removed and cleaned carb/new carb kit, new fuel lines,new tank, new hose and bulb so fuel should not be an issue.

Is 100:1 standard mixture for fuel?

I have this SAME request posted on the Mariner forum on this website too....any help greatly appreciated.

[boats.net]

The 2 cylinder 30 uses a B7HS plug gapped at .024"
100:1 is the correct oil ratio

[surfcaster]

My S# is 689 s 108***, model 30eo. Is your info from Yamaha specs?

All of the info on the Mariner side of your site say's 50:1. I just want to be sure.

Thanks for the reply!