Yamaha anodes

Halfhitch

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My 2006 F225 only has 103 hrs. but because of age (the motors, not mine), I pulled out the anodes to have a look. They are in ok shape, with little erosion. I bought new rubber grommets for installation. In the past on other yamahas I have found some serious corrosion around the zinc and the holder, to the point of being very difficult to remove from the head. I am wondering what you all think about putting some kind of grease around the grommets to facilitate future service. I of course understand that any coating on the zinc is a no-no to allow contact with the water.image.jpgimage.jpgimage.jpg
 

Ky Grady

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Be careful with regular grease as it could deteriorate the rubber. I bought some silicone grease for my pop in inspection plate O-rings. You could possibly use that on those rubber grommets.

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SkunkBoat

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The silicone grease is the ticket. They use it on injector gaskets and VST gasket. I am an advocate of removing the anodes and Tstats every season to inspect and clean off the salt goo. Always have a spare oring or two in case you ruin one. I did my Zuke this fall. 150 hrs first season. anodes good but had salt goo that wipes off.

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Halfhitch

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Good thought. I use a silicone grease on our pool equipment to protect the o-rings. The stuff you got for engines is probably a higher temp product. I'll check into that. Thanks KG
 

wspitler

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I use Dow 111 Molykote. It is essentially a high temp silicon based grease. Not as expensive as some alternatives.
 
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Halfhitch

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Thanks, Skunkboat, that's about how my anodes looked when I removed them. Funny you mention t-stats cause that's up next. Due to the years of sitting I have a timing belt on the way and will take care of the t-stats while doing the timing belt.
 

Halfhitch

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I started digging through my stash and it turns out I have some stuff from a previous venture that is silicone based.
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Hookup1

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Per Skunkboat consider doing the thermostats too. Mine this winter trip. Interesting thing is I have had this problem twice. One engine heats up faster and runs hotter. I assumed the hotter one was the problem. Nope. Other way around.

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seasick

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Per Skunkboat consider doing the thermostats too. Mine this winter trip. Interesting thing is I have had this problem twice. One engine heats up faster and runs hotter. I assumed the hotter one was the problem. Nope. Other way around.

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That's pretty funny and demonstrates that without knowing what normal is, it is easy to misdiagnose abnormal. I go through that each spring during initial motor firing. I measure the individual head temps with a contactless thermometer, and if they are different over some time, I assume something is off but I can never remember whether it's telling me if one head is too hot or one is too cold:)
 

Hookup1

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That's pretty funny and demonstrates that without knowing what normal is, it is easy to misdiagnose abnormal. I go through that each spring during initial motor firing. I measure the individual head temps with a contactless thermometer, and if they are different over some time, I assume something is off but I can never remember whether it's telling me if one head is too hot or one is too cold:)
I really should have a log book. I'm really good on maintenance and sharing on GreatGrady. Lots of pictures. I keep all the receipts too. But a log would make it so much easier.