1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 445Get this manual

1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 445

PISTON RINGS Piston rin gs are available in standard size onlyTop co mpressi on ring is chrome la ted; second compressi on
assembly in its groove to make sure ring is free and does ot bind in groove at any point[f bindin occurs determine cause
and correc by carefully dressing with fine ut fileIf bind in is caused by distorted ring, howeve r, in stall new rin g;)Proper
learance of piston rinO' in it piston ring groove is very importan in maintaining gine performance and in preven ing excessive
oil consumptio Therefo rewh en fi ttin new rin gs, learan ces between top and bottom urfa ces of ring grooves should be in
spec ted Figure 9Rolling Ring in Ring Groove 6Assemble rings to pistons as the are fitted and make final te st of rin fit
In grooves by repeating fittin g procedure iven above,r'iOT: Be sure to {it ach ring to its individual piston and groo ve