1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 438Get this manual

1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 438

VALVE GU IDE TOO LS TOOL Wedge Mandrel He ad Reamer VALVE SEAT (CYLINDER HEAD) C-91 -46803 C-91-4677 -91 -46777 C-91-4677
inl et and xhau valve scats from pi lo t3Remove roughi ng ston fonning ston install fini hing stone pilot and cut jus eno
ugh metal from eat to pro ide smooth finish .J arrow do"n valve seats to prope widthccor din to speci fication s, by grindin
port side with stone to lowe an 60 ston to raise seal5 Remov xpandi ng pilot and clean cylinder head carefull to rem ve all
chi ps nd grinding fr om bove perati ns 4Coal pre ss-fit rea of guide wi th Super-Du!;' Gear Luurica nt ncguide with mandr
ITool hould bOllom on he Ream e, guide with ream to brin!! in ternal dia me er to co rre sil(F ig ure 4) ,V OTE: After wl
l:ng f!ILid I:t I,abs olu.tely ess ry to regrind the corres po nding ['Cllve seatII- Cylinder HeadReamer aT E: I'uive seats
should be concentric (Ol mmtotal irldicalOr readinf! rFi uu re 5) Figure 3R eaming Cylinder Head Valve Guide Reamer F igu