Leaking oil from the Gearshift

[John Silva]

After the first ride of the season my bike has started leaking oil quite badly from the gearshift oil seal.

Has anybody replaced theres? I wanna know how hard it will be without taking the engine out/apart.

[Fazer Jake]

Are you sure its leaking oil/its not off the chain? think its an engine out job if not  :o

[John Silva]

Oh yea its leaking. 
I cleaned around the gear shaft and then gave it a wiggle and the little drop seeped out as you can see in the photo.
And this was done with the engine cold.
I imagine when the bike is running the oil will be thinner and under a bit pressure causing it to spew out.  :thumbdown

[b3tarev3]

Oh yea its leaking. 
I cleaned around the gear shaft and then gave it a wiggle and the little drop seeped out as you can see in the photo.
And this was done with the engine cold.
I imagine when the bike is running the oil will be thinner and under a bit pressure causing it to spew out.  :thumbdown

You should be able to just pop that out and replace it.

[Captain Haddock]

Use a slide hammer with a self tapping screw on the end, punch a small hole in the seal and screw the self tapper in, a couple of tugs on the slide hammer will pop it out, you may have to do it a few places if it's tight but should be fine.
Then clean the shaft and push a new one in, take the old one to a bearing supplier for a cheaper part than oem.
If you get a seal with a spring inside you can often pull the spring out and take a few coils off and pop it back in to make it a bit tighter.
1 hour at the most, engine out my arse!

[born to be mild]

When youve got the seal out clean the shaft with solvent over the splines then wrap a bit of selotape around them to make sure that you dont damage the lip of the seal as the new seal goes over the splines. Smear some oil on the rest of the shaft then gently tap it home with a plastic hammer or a soft drift of some sort, a bit of wood will do.
All common sense really but whatever you do, dont go taking the engine out !

[lardarse]

Had mine go on my old 600, it was when chain snapped and it took the clutch actuator out.
The seals are really cheap and easy to replace.

I had the clutch side casing split off as well at the time, so was able to gently remove the gear selector and prise the seal out.

It's not a big job, don't worry too much about it being a nightmare repair, it isn't! :thumbup

Kev

[John Silva]

Cheers guys much appreciated.  8)

I have ordered a replacement seal. I haven't got a slide hammer but I will fashion something up to get the old one out.
Good tip about sellotape around the splines to make sure that no damage is done to the lip of the oil seal.

For future reference the oil seal is a 12x22x5.
Yamaha number 93102-12106 is superseded by the new number 93102-12321