1968 Evinrude Ski-Twin, Ski-Twin Electric 33 HP Outboards Service Manual, Page 44Get this manual
DO NOT scratch cylinder head gasket surface of cylinderUse surface plate to surface this With continued operation of the motor, the cylinder walls will take glaze which reduces the effectiveness of the seal between the piston rings and the cylinder wallsThe result will reduced compression and decrease in performance of the engineBefore reinstal1ing the pistons, break the glaze using fine cylinder hone to refinish cylinder wallsfew and down motions of the tool should sufficient to remove cylinder wall glazeSee Figure 5-15Blow out passages and drainsSURF ACES Remove traces of dried cement, using trichlorethylene lacquer thinnerCheck gasket faces for flatnessUnder certain conditions, gasket faces warp spring, particularly where thin sections 20 4
Figure 5-14Driving Out Wrist Pin
CLEANING, INSPECTION, AND REPAIR