Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 25Get this manual
Trigger Coil REMOVAL
1Disconnect redwhite coil lead from COl unit2Remove screws (a) and pu ll trigger coil (b) from housing
Ignition Coil
REMOVAL 1Disconnect black yellow CO unit lead (a) from coil (bl 2Disconnect high tension plug lead from spark plug
3Remove bolts (eland washers (d) and remove coil while disconnecting black ground wi res (e)