Quote:
Originally Posted by pickax
funny! if it ain't broke don't fix it 
Right now the engine is sitting in a box in my garage so I've got a while until I know if it will leak....but there is no sign that it was leaking before...I'm guessing it's normal. If I could change the o-ring without removing the cylinder head I would go for it just to be on the safe side. |
If it's like the Ninja 500 I just finished working on, it is held in-place by 1 bolt to the valve cover or head, and comes right out.
They corrode pretty quickly, and since the engine is just sitting there it would be a good time to replace the o-ring. The o-ring is metric, so most hardware store parts aren't going to work. Possibly NAPA might have it.
Clean the tube and opening of corrosion, and apply a very thin layer of silicone plumbing grease (not adhesive) to the o-ring and opening before reassembly.
The 500 I just worked on had only 4000 mi on it, and the pipes didn't look that good.