1995 Johnson/Evinrude Outboards 25, 35 3-Cylinder Service Manual, Page 142Get this manual
20When all pistons and connecting rods are assembled, install piston ring setsInstall each piston ring set on the piston that was used to test the ring clearances
W 'Notel Be sure gap of ring fits squarely around dowel pinINotel Before continuing, be certain all 0IfC Gel-Seal II sealant has been removed from the cylinder block and crankcase mating flangesIf traces of hardened 0IfC Gel-Seal II sealant are left, main bearing misalignment might occurRefer to Cleaning, this section21Rotate cylinder block so that the cylinder head surface is facing up and horizontal to the floorINotel Use one the following ring compressor tools for inserting the pistons into the block: 500 500 565 565 cc cc cc cc Standard: 0IfC PIN 342218 Oversize: OMC PIN 342219 Standard: OMC PIN 342220 Oversize: OMC PIN 342221