Yamaha anodes

[Halfhitch]

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.

 

[Ky Grady]

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.

 

[SkunkBoat]

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.

 

[Halfhitch]

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]

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

 

[Halfhitch]

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.

 

[Ky Grady]

Looks like the Danco stuff from Lowe's is hi temp compatible.

 

[Halfhitch]

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

 

[Hookup1]

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.

 

[seasick]

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.

View attachment 18986

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]

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.