Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 477Get this manual
ATTACHMENTSCONTROL LINKAGE
Thread cap (e) onto steering cable mounting tube, up to mark (a)
a STEERING CABLE INSTALLATIONPORT OUTBOARD
IMPORTANT: Lubricate inside of port outboard's tilt tube and rubber O-ring seal located inside tilt tube with 2-4-C wTeflon, before installing steering cableLubricate inside of port outboard's tilt tube and rubber O-ring seal (a) with 2-4-C wTeflon