1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 333Get this manual

1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 333

ADJUSTMENTS for MODEL nB" CARBURETOR IDLE SPEED and MIX TURE ADJUSTMENT NOT E: This adjustme nt sh ould be pe rfo rm u;ith
to ch eck nd adj us flo at drop 1Remove car bure tor flam rres or from ir horn 234oDisc onn ec fu li ne at carburetorRe move
cover atta chin sc rewsLift co ver trai gh preve nt dama ge to fl oatsPlace ssem bly up-end on fl urfa ce Crankcase Ventilator
Fitting 1Hold cove assem bl in upright position and let fl ats s spend fr eelv2Care full ben float ta ng on ly if necessaryrear
of fl oa asse mb ly so that float is 1-34" (44 .45mm) belo ga ske urface ,fuel Inlet Fitting MEASU RE FROM GASKET SURFACE
TO BOTTOM Of fLOAT Figure 9Float Drop Adjustment AIR HORN INSTALLATI ON 1l nstall Id le Speed -1- ttachi screws and ighten
screws securel (F igure 10) 2Conn ec fu el line to carburetor fu filt r3 Replace car bure to Hanl rres tor an he and adjus
id le speed and idl mix tur if ne ces sary INL ET FUEL FIL TER REOV AN EPL CE Figu re 7Idle Speed and Mi xture Adjustment
'IB- UEL SYST EMS 1R e11l0ve fu el line co nnec ti on nd inlet fu el filte r470 Page: 333 Mercruiser Service Manual 1963-1973