Crank seal replacement. Job for a novice?

[snuckler]

Looking like crank seal failure on my mk3. Is this a job worth attempting by a numpty with a Haynes manual. Not really had a bike apart since my old 250 25 odd years ago,but want to give it a go myself. What else needs replacing whilst it's apart? Thoughts,advice greatly appreciated. 

[rob99]

Absoloutly give it ago yourself no harm in trying in my eyes one of the best engines to learn on the haynes is good guide and aslong as you take it a step at a time you shouldnt go far wrong if you have any bits left post a pic on here and im sure someone can help

Your better of changing your main bearing whilst your there (6205/6304 /£12.32 posted from simplybearings and there koyo) check your clutch plates aswell and all other seals for danage or wear n tear

Good luck

[mudguts]

Whats is the symptoms of the failure? burning gear oil? sucking in air, you can test for that with some brake cleaner, a worn crank spacer can cause the gear side one to go,
its quite simple to do and a good learning curve, just make sure you have a nice drift to tap them in square, have a look on youtube im sure i saw some footage on there.
I would get 2 sets just incase you mess one up, not expensive.

Have fun

[eddie1969]

Hi ,
Make sure to grease the seals well before mounting
Otherwise they will be gone rapidly
Good luck Eddie

[snuckler]

Cheers guys,really useful stuff.

[raven13]

there isnt a job on these great little machines that you shouldnt try.
its a nice easy engine to work on and a great learning experience.
i made the mistake of getting others to build my engines at first. the only one thats run anything close to full poyential is the one i built myself

[snuckler]

That's encouraging. No excuse not to get stuck in then. Cheers.