1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, P/N 507875, Page 424Get this manual
cSlide the piston off the rodDiscard the two O-ringsdSlide the end cap off the rodeRemove and discard the scraper from the end capfRemove and discard the O-rings from the end capgOil and install new O-ring in the end cap21037
hInstall new scraper with lip facing outiOil and install new O-ring on the outside of the end capjCarefully slide the end cap onto the rodkPlace the piston on the rodOil and install new O-ring on the outside of the end capIInstall the five impact relief balls and springs