im assuming the engine is out.Hi all.
My mech seal looks to be in very good condition, although it surely is the original one. Should I change it or not? What causes these seals to fail, and how does a faulty one look like?
Yep if the engine is out then it's not going to hurt to pick up a $20 USD yamaha seal and slap it in. The real question is how is the oil seal on the other side.
michael,why make an easy job difficult.The seal behind was OK, but I will be changing that as a matter of fact since failure of that one could potentially have disastrous consequences. About the mech. seal; I'm concerned about that the new seal cups seem to be larger in diameter, and that the seal cup or the hole it is inserted into must be modified to make it fit. Perhaps I will use Shep's method, and re-use the old cup.
michael,the yammy seal is known for have a stronger adhesive than the honda seal,so you need to heat until it sizzles.you wont damage the part as long as you remember......do NOT use force....if it doent come out easy,,you have not heated it enough.you will be fineThanks for the input guys. I will try Shep's method, and re-use the old cup. The only thing I'm concerned about is if the new seal could be damaged by this procedure. Warming up and that I mean. I see that some posters have had difficulties with this.
from sheps siteI see that there are two Yamaha seal available on eBay, 11H-12438-00 and 11H-12438-10. Both are listed for the same models. It seems the -00 seal is of the older type, and that the seal cup is slightly smaller? Will that one fit without modification?
from sheps site
Yamaha Seal(Part No:11H-12438-10-00)
id go with this,since its proven to be correct for all 500 models,irrespective of the dimensions
have you,as i posted above been in touch with Doward
I used a dremmil with a drum sander to work the openning to place the new seal housing into place. This way i do not worry about the gasket comming looose. I can then use the new seal complete. No silicone involed.If you don't want to do the Shep method then this is the other way around.
If you do it this way the flapper wheel will be a bit tricky to get in the hole but it will work and really needs an electric drill to spin it since some cordless drills may not light trying to turn it.
But if you want to do the Shep method there is no problem there. Just remember to clean everything up good and make sure the weep hole is clear.