How To Install Permatrim

How to install a Permatrim on a Yamaha outboard.

[jsimons]

the sealing needs to be between the stainless bolt and washers and the ali. parts to stop electrolysis

[u]

I have on on a 17 foot skiff with a 90 Yamaha and one on a 24 foot Triton center console with a 250 Suzuki. They make a profound difference in Boat handling. I will never own any boat with one.

[aj-lily]

I just bought one and it only comes with a total of six screws, three per side

[ahndeux]

You are sealing it the wrong way. Its good that you put a ring around it, but it has to be in the hole around exposed aluminum. Water will find its way between washer to get inside. Best way is to put ring of sealant as shown in the video, some inside the edges of the hole and a dab on the bolt ends and the washer before you tighten it down. That way, the bolt and washer is sealed. It will get messy, but you can clean it up easily before it dries. You just created a nice little pocket for the water to sit and corrode the aluminum.

[kentyler]

Was thinking about making one of these out of a piece of 3/16” aluminum. Mine would be flat without the rolled edge. I think the rolled edge is beneficial but I can’t do that. Any idea if a flat hand fitted cavitation would still be beneficial?

[OrcaAngler]

my boat is little bit heavy at the transom my bow keep raising due to light bow do you think this will help?

[revfreighttrain]

Do you have to determine the location and spacing on drilling the holes or is the foil marked in some way?

[robertharper]

Hi did you have to take the prop off to do this?

[MrAbundance]

Hi there did the permatrim make difference in handling? Did top speed change? Planing speed ?

[BornAgainCynic]

G'day, I have cavitation problems, can't get up on the plane very easily, possibly because my motor cavitation fins are 2" too high compared to the bottom of the hull. Any opinions on these to reduce this problem? Thanks, Jeff, Australia.

[krkabob]

Voids Factory Warranty if new. Just sayin.

[AB-bgor]

I am thinking if the manufacturers of outboards thought these would help their product, they would come from the factory with them already on. They have engineers that have already figured it out for us.