1968 Evinrude Ski-Twin 33 HP Outboards Service Repair Manual P/N 4482, Page 46Get this manual
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gr inding ngle tl1e edge, nd breaking tl1e lowe sl1 edge to prevent damage to lower ring la ndSee Figure 5-17CI1 eck piston for siz nd roundness, using mi rom eterSee Figure 5-18 Piston skirt must per