Engine oil leaking at final drive

[JOLLY]

where would the seal be that would allow oil to leak where the final drive meets the swing arm? It would seam more likely that it would leak at the boot, at the back of the engine. What would case this to happen?

[CYBORG]

That would be on the actual drive shaft and the coupler on the final drive. There are two seals there, could be ether one. But they are not re useable...replace them both...leak will stop

[JOLLY]

Do i pull the engine or just the final drive to get to these seals and where do I find them??

[JOLLY]

I looking in the book on page 336 oil seal #31 and page 338 oil seal #14. Are these the seals you are talking about?

[CYBORG]

Don't have a picture in front of me, but if you pull the final drive, one seal goes on the actual drive shaft, and the other is in the coupler that comes out with the final drive. The connector has to be removed,(its attached to the final drive) When you get it off, you will see how it works. Still available from Honda

[CYBORG]

one is actually an O ring (91359 MG9 003) The other is a seal (91262 MG9 003)

[JOLLY]

How does engine oil get down that for and not leak in other places?

[JOLLY]

Thanks for the part numbers. Can you recommend a place to order them?

[JOLLY]

Its not leaking final drive oil, its engine oil. I don't understand how that is happening.

[JOLLY]

Are these oil seals you are talking about for the final drive oil, or do they stop engine oil??????

[CYBORG]

If its engine oil it has to be the seal on the output shaft of the engine. Probably easier to remove the swing arm then the engine. I get mine from the local Honda deler. Only a few blocks from me

[CYBORG]

The engine seal is 91302 001 020 But be sure its engine oil leaking, and not finial drive fluid

[JOLLY]

OK I will. I'm going to wash it real good and trace the leak. Thank You, I'll let you know. I had installed a new Shinko back tire and putting the front on when the new fork seals come in.

[JOLLY]

CYBORG, It is engine oil for sure. It's not so bad it would keep me from riding. I just hate oil leaks. Do you know of anything that might swell up the seal that may help it.?? Surely they make something that would slow it down. BUT WHAT??????

[ericheath]

It must be this seal and looks to be replaceable without pulling the motor.

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Probably loosen swingarm and allow it to move back enough to remove and replace. I use a ratchet strap from the upper crossframe brace to the swingarm by the tire to keep the swingarm from falling and assist rolling it back in place. My Frankenstein bike had enough slack in wires and brake lines to allow this.