1990 Johnson Evinrude "ES" 9.9 thru 30 Service Manual, P/N 507871, Page 144Get this manual
Assembly
INote pressing operationMakecalled forced assemblies unless Proceed slowlyno is forAll internal components
must be perfectly clean and lightly coated with Johnson or Evinrude Outboard Lubricant
12411251 1Using components from OMC Wrist Pin Retaining Ring Installer and Pressing Pin PIN 392511, seat new retaining ring in groove of the pistonWhen installed, gap of the ring should be positioned opposite groove in the piston, To avoid personal injury, use insulated gloves when handling pistons that have been heated2Heat the piston to 200400 (93204 C)Using the piston cradle and wrist pin driver, oil and start the wrist pin into the piston wrist pin boss opposite where the retaining ring is installedDo not allow the wrist pin to enter cavity of the piston0 0
Before attempting to install wrist pin in piston, heat piston to 200400 (93204 C)The heat source must be applied evenly, not concentrated on small area of the piston0 0
12711281 3Allow .the piston to coolSlide one of the wrist pin washers down the wrist pin Position the top end of the connecting rod over the wrist pinApply OMC Needle Bearing Assembly Grease to the 22 needle bearings and install the bearings into the connecting rod4Slide the connecting rod with the needle bearings and washer up and off the wrist pin, being careful not to disturb the bearingsReheat the pistonPlace the connecting rod and the two wrist pin washers in position in the piston cavity, aligned with the wrist pin boss5Finish installing the wrist pin through the connecting rod and the piston until the wrist pin contacts the installed retaining ringCheck to be sure none of the needle bearings have been disturbed and pushed out of the connecting rodInstall second new retaining ringDue to slight decrease in wrist pin inside diameter, it might be necessary to remove 0.015 in(0,38 mm) from the guide end of OMC Wrist Pin Driver PIN 392511 before usingU