1990 Johnson Evinrude "ES" 9.9 thru 30 Service Manual, P/N 507871, Page 57Get this manual
Service Specifications Special Torque Chart
Description Leaf Valve Screws Intake Manifold Screws 9.9-15 Cover and Bowl Screws
InLbs25-35 60-84 8-10
Adhesive
GMC Screw Lock