1990 Johnson Evinrude "ES" Colt/Junior thru 8 Service Repair Manual, P/N 507870, Page 59Get this manual
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Service Specifications Special Torque Chart
OMC Screw Lock
2,8-4,0 7-9 0,8-1,2
5-8: CoverBowl Screws
Orifice Plug Screwdriver PIN 317002 Float Gauge PIN 32