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Cavitation Plate Fin
Posted: Tue Sep 03, 2013 11:03 am
by Flanker
I noticed on my 150 Merc Outboard that the fin above the propeller that bolts to the bottom of the cavitation plate is missing.
What do you call these things..Cavitation plate fin? What is their purpose and where could I find one?
Re: Cavitation Plate Fin
Posted: Tue Sep 03, 2013 11:12 am
by redbeard
Its called a Trim Tab try a dealer or ebay, craigslist.
Re: Cavitation Plate Fin
Posted: Tue Sep 03, 2013 11:13 am
by redbeard
The tab is to compensate for steering torque.
Re: Cavitation Plate Fin
Posted: Tue Sep 03, 2013 11:22 am
by Flanker
Thanks...I don't know how long it has been missing but I haven't noticed any difference. What should I be experiencing?
Re: Cavitation Plate Fin
Posted: Tue Sep 03, 2013 1:43 pm
by oldmn19
If you release the wheel it would start running left or right, and not stay straight. If it doesn't don't sweat it.
Re: Cavitation Plate Fin
Posted: Tue Sep 03, 2013 4:06 pm
by Bryden24shp
Some of them do not have torque tabs anymore. If the plate and bolt is still there, you have an anode in place of the torque tab, from the factory.