Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 171Get this manual
3Open air vent on remote fuel tank cap 2Tu rn uel selector lever towa rd lower un it (open positi n)
aAi Vent
4Squeeze fuel primer bulb unt il it is firm
aFuel Selec to Leller
3Open uel ta nk cap vent
aPllmer Bulb
5Operate ou tboa rd using inst ructi ons as provided in the "O peration and Mai ntenance Manual
Operating Outboard Using Integral Fuel Tank