I just finished putting a motor I bought from e-bay into my 03 DS 650, replacing a blown motor. I am left with a thin, reddish-orange colored O-ring, approximately 2 1/8 inches in diameter, and I can't for the life of me recall where it came from. I know this is a long-shot, but does anyone have any idea where this might go?

 

I will guess. Thin, how thin?
Either o-ring behind oil filter cap or behind cover on side of carb for throttle cable.

OMR

 

O-ring or shim? Most of the O-rings are black, sometimes the exhaust gaskets/shims between the head and the header pipe can be reddish/orange.
That sounds big though for either OMR's or my suggestion....

 

<div class="FTQUOTE"><begin quote>Originally posted by: OMR

I will guess. Thin, how thin?

Either o-ring behind oil filter cap or behind cover on side of carb for throttle cable.



OMR</end quote></div>

My thoughts exactly, I was gonna suggest the intake orings, but those aren't that big

 

Is it metal or rubber?

 

my throttle cable oring was that color.Ane about that size

 

yeah same here, pretty sure its the throttle cable oring

 

It is rubber. Thanks for the input guys, I know where to start now. I am hoping it is for the throttle cable housing on the carb, simple to put back on. I would HATE to have to take the headers back off again.

 

Red 2.5 thremostat.....My guess

I have never touched a stock carb so that i have no info on.[img]i/expressions/face-icon-small-blush.gif[/img]

 

Go to a parts web site like powersedge.com and look up parts. Most of these sites have a complete breakdown of your bike with pictures of the parts