Reply To: Seal Upper Crankshaft Bearing Evinrude 18 HP 1960

[Bob Wight]

I’ve never been sure I have total buy-in to how well the recirc system works.  The FD-12 I’m working on right now had a bad upper crank seal but I also think some of the oily mess on the mag plate may have come from oil mix leaking past the bearing.   Sure wish they had used a belt and suspenders design with an O-ring in conjunction with the recirc system.

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20
1982 Evinrude 25hp

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."