Mercury Electric Outboards 222 Thruster Service Manual, Page 21Get this manual
7Position new (do not re-use) sealing washers on thru bolts(Figure 10) Apply Perfect Seal to both sides of sealing washersInsert the bolts thru gear housing and motor housing and thread bolts few turns into nose coneInstall skeg rod between gear housing and nose coneTighten thru bolts to 251bsin(2.8 N.m) ACAUTION
Perfect Seal MUST BE applied to sealing washers to prevent water leakage Into motor housingw 13134