1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 311Get this manual

1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 311

FUEL SYSTEM DESCRIPTION Thi eeli on IS ivided into ''Fuel Pu mpsand "C arbure orsand 'er oe eral ruel ern perfomlance spec
FUEL LINE CHECK VALVE 110-120- 150 Models A ch ck valv and fu line ca install on vlerCru is r 110-120-150 gines to liminate
excessive cranking after Iuel ta nk or ca rburetor ru ns dry If en gi does no have fuel line che val',install one fo ll ows;
(Fi ure 1) 1Re move tee fittin from ca rbur tor nd install filling on ischa rge ide of fu pumpRemove pres ent tri ctor and
in sta chec va lve into te filtin on inl et side of fue fi Iter ,3o nne hose bet ween check valv and I'eL vc rs fue inc IlIld