1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 400Get this manual

1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 400

EXHAUST WATER SHUTTER 1 equipp with xh aus shut ter in exhau st tu be, it may make attl noise at idl eedThis nois is caused
rocker arm coverINSTAL AT ION NOTE: crankcase vent baffle kit(B -45369A I) is available for installation in valve cover of
153 cuinengines, erial No 2220847 and belowInstallation of this it will eliminate possibility that crankcase oil will be
carried over to carburetor via crankcase breath er hose which ext ends from valve cover to carburetor2Connect temperature
wire at rocke rm cover lips3Co nn ect cran kcase ven ti lation hos es 1Clean gasket surfaces on cylind er head nd rocker
arm cover with de greaser, hen, uSIn new gaske t, VALVE MECHAN SM REMOVAL 1 Remove roc ker arm cover as outli ned 2Remove
rocker arm nllts, rocke arm balls, rocker arms nd push rods baLLs are being installed, bearing surfaces of rock er arms an.d
ro er arm balls with Molykot or eq uivalent 1rnstall push rodsBe ure that push rods seat in I her soc kel2Install rocke arms,
rocker arm balls and rock er arm nUlsTighten rocker rm nu ts until all las is limin ted 3Ins tall rocker arm cove as out