Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 112Get this manual
Propeller Installation To prevent accidental engine starling remove (and isolate) spark plug lead from spark plug Put block 01 wood between anti-ventilation plate and propeller
.A.CAUTION
3Put block of wood (a) between antive nti lation plate (a) and propellerT orque nut to 150 lbin (17 N.m)
blade1Coat propeller shaft with one of the following Quicksi lver products: aSpecial Lubricanl l01