1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 434Get this manual

1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 434

Tt:8e ,' ure disLin f! uish be twe en intak alves an xh aus !;al uesas each requ.ires Cl different cie u.r anrc,Fi ur .3.1
nstallat ion In same posit ion 2Clean all oil pass ages roc ker arm shafts and mountsREASSEMBL Y 1Pos ition ro ker ar ms
origin loca io wi th shaft springs CLEAN ING and INSPECTION I, Chec [or essi'e we ar between rocke arm sh afts and rocker
rms (minimum .006".01 6mm], maximum .002" 251 ide rock arm haft In thru rocker arm mount and ro ker arms 3Loca te pin or
ke epe thru roc ker arm mount nd rocker arm haft VALVE MECHANISM REMOVAL arc installed in ngineby rotat ing rods ith valve
closed Rod also may be hecked with dial indic tor va lve cove rbolts hi secur roc ker arm shaftspush rods nd ke ep in order
for re installation pos iti on rock arm and sh ft as emb li es 1Rem oveReHem ' in some ,1L ift off INSTALLATION 1Install
rocker arms and torque bol ts specification s (in sequen ce, "90" only)2Loose ro ker arms and install push rods in ori ina
ositions3 Adj us 'alve lea ran ce with ngine OT unnln"'outlined4 In stall valve co 'er with new "'as ke t CLEANING ond INSPECTION