A forum for owners of Yamaha TTR250 trail and enduro bikes!

Members Login
Username 
 
Password 
    Remember Me  
The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Oil weep / leak
Post Info TOPIC: Oil weep / leak
hertsrider


Senior Member

Status: Offline
Posts: 138
Date:
Oil weep / leak
Permalink  
 

Morning - can the oracle of knowledge help me solve a problem on my beloved TTR?!

I recently replaced the rocker cover gasket on the TTR as i had a slight weep which i believe went well....however....as you can see from the picture attached, i have a leak still and this time i think it's coming from the circular black grommit in the middle of the picture.

Question is...what is this little grommit for and why would it all of a sudden started weeping and leaking oil onto the exhaust head where it meets the cylinder?

Any help much appreciated.IMG_1893.jpg



Attachments
__________________
noeyedear


Senior Member

Status: Offline
Posts: 199
Date:
Permalink  
 

The grommet is for the decomposition mechanism lever thing, they all leak at some point, brian used to sell a fix for this, probably still does, have a look on totally ttr should be there. Brian will be along soon and answer your question better than I have

__________________
Cubber


Super Guru

Status: Offline
Posts: 2608
Date:
Permalink  
 

That's the classing "decompressor plug" leak, Neil.

It's more ugly than serious!

This CLICKY LINK will show you how to remedy.

Replacement rubber bungs are available from dealers but a more permanent replacement bung is available from Totally TTRs Extras.

Scottie_plugs1.jpg

Martyn

 



__________________

You're never too old to learn something stupid

East Budleigh. Devon
TT-R250M


Super Guru

Status: Offline
Posts: 1324
Date:
Permalink  
 

Hi hertsrider,

That is the plug for the decompressor lever (not fitted in your case). I suggest that you buy one of Brian's aluminum inserts with the Viton O-ring HERE

If you need a guide see HERE.

Jarrah

 

Edit: *Slaps Martyn and Adrian for being so quick* biggrin



__________________

2000 TT-R250M-

Spoiler
TTRfan


Super Guru

Status: Offline
Posts: 8565
Date:
Permalink  
 

Thanks Jarrah.

Scott's plugs are really good - pics and fitting guide here

Brian



__________________

Exeter, Devon, UK

http://www.ttr250.com  - The one and only dedicated TTR250 FAQ!  

TIP: For easy viewing bookmark the "Recent Posts" view - http://ttr250.activeboard.com/p/recent/ 
hertsrider


Senior Member

Status: Offline
Posts: 138
Date:
Permalink  
 

Thanks all for yet another swift solution to a problem! Gotta be the best and most useful forum out there!
Thanks Brian...new plug to be fitted tonight!

__________________
hertsrider


Senior Member

Status: Offline
Posts: 138
Date:
Permalink  
 

Just got round to repairing this and have hit a problem....underneath the black rubber is actually what appears to be a metal plug...there was only a thin layer of rubber over it.
There is no obvious way to remove the old plug...
I've undone the little bolt next to it to see if i could lever it out but no joy.
Any clues? Don't really want to take the rocker cover off but might that be the only way? Puch the plug out from the inside??
Help??

__________________
Cubber


Super Guru

Status: Offline
Posts: 2608
Date:
Permalink  
 

That "metal plug with rubber around" is obviously the remains of a previous plug replacement - except the old plug wasn't removed and just pressed further into the orifice by inserting the new plug on top. no

Just stick a screw driver/small chisel into it and lever it out - don't damage the "bore" of the hole though. bleh

Martyn

 



__________________

You're never too old to learn something stupid

East Budleigh. Devon
TTRfan


Super Guru

Status: Offline
Posts: 8565
Date:
Permalink  
 

As Martyn says wink

Remove the old plug by punching a hole in it and levering it out whilst being very careful not to scratch the aluminium sides in the head casting.

Decomp_plug1.jpg



__________________

Exeter, Devon, UK

http://www.ttr250.com  - The one and only dedicated TTR250 FAQ!  

TIP: For easy viewing bookmark the "Recent Posts" view - http://ttr250.activeboard.com/p/recent/ 
hertsrider


Senior Member

Status: Offline
Posts: 138
Date:
Permalink  
 

I did tentatively try that but it felt wedged in.....nothing to really get any purchase / leverage on....
I'll have to have another look....
Any other clues??!!

__________________
TT-R250M


Super Guru

Status: Offline
Posts: 1324
Date:
Permalink  
 

What I did with mine is-

Took out the decompressor M6 ''special'' retaining bolt.

Used a screwdriver to punch the seal near the edge, it then slid on an angle and I was worried about marking the decompressor housing. So I ended up using a sharper screwdriver to piece the plug so I had something to lever against (obviously using the seal as the lever point.)

It came out easily in my case, it was more the worry of damaging the housing that the work went into, and that I was worried that I would damage the plug and not be able to get it out without taking the top cover off.. Turns out I had nothing to worry about. smile

The new alloy plug fit's like a glove, so all you do is push it in by hand and tighten the M6 ''special'' retaining bolt.

Good luck!

Jarrah



__________________

2000 TT-R250M-

Spoiler
hertsrider


Senior Member

Status: Offline
Posts: 138
Date:
Permalink  
 

Thanks Jarrah...i'll give it a go when i'm home later on.

__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.
The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Oil weep / leak


Create your own FREE Forum
Report Abuse 		Powered by ActiveBoard