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Oil leak by starter motor
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Hi, my Australian 2006 ttr250 has recently developed an oil leak which seems to be coming from underneath the starter motor. I have done some reading on the forum and understand that it could be a cracked generator cover case caused by the sprang clutch making a clack noise on shutdown and sending a shock through the casing causing it to crack.  My bike has made a clacking sound on shutdown since I have had it.

As the bike isn't road registered both the previous owner and me have used it exclusively for trail riding, I am pretty sure I need a new sprang clutch either way.

I haven't been able to pull the generator cover off yet to see if it's cracked.  Is there still hope that it could just be a o ring or gasket? Do you have any examples of cracked cases so I know what to look for?

Many Thanks

Louis



-- Edited by Louis0238 on Thursday 21st of May 2020 09:22:50 PM

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Welcome to the forum, Louis.

If you put a Search (middle of choices top of page) for Sprag Clutch you will see that it can be a long recurring problem for TTRs. confuse

Or try this LINKY first.

I hope it isn't a cracked casing because it may be half a crankcase replacement.

Let's hope that it's just a new sprag you need - look on the bright side.

Others will be along shortly to give you the gen.

Keeping my fingers crossed in the mean time.

Martyn



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Welcome to the forum!
Sources of oil in this area: Cylinder base gasket, starter motor O ring, generator cover gasket, or worst-case scenario cracked gen cover or crankcase.
The sprag clutches make a clunk as normal on shutdown, but a louder bang that makes you wince is bad news and the backlash can fracture the casing as you have read.
Going to have to pull the cover off to have a look I'm afraid.

 

https://ttr250.activeboard.com/t64495785/cracked-generator-cover/



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Ok thanks for the replys guys. I will pull the generator cover off this weekend and take a look.
Thanks for your help

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Thanks for the help guys ended up buy a new gasket this afternoon and took the generator cover off this evening. I saw the old gasket was split at where the oil was leaking by the starter motor. I installed the new gasket and that fixed the leak. Im relived that I didnt have to replace the whole cover and gears too. Ended up being an easy fix.
Once again thanks for your help

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Great news!

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