Newcomer with YFZ450 question

Farmstore34 · #1 11-30-2008, 11:04 PM

Hi all,
We have a 2007 YFZ450 quad that we bought new and ride regularly. The last 2 times it was ridden I noticed a little oil seeping out of a hole on the right side of the engine cylinder, about halfway between the crankcase and the top of the head. What is this hole or port for, and what would cause it to leak? Thanks,
Colby.

**2fun** · #2 11-30-2008, 11:20 PM

Quote:

Originally Posted by Farmstore34

Hi all,
We have a 2007 YFZ450 quad that we bought new and ride regularly. The last 2 times it was ridden I noticed a little oil seeping out of a hole on the right side of the engine cylinder, about halfway between the crankcase and the top of the head. What is this hole or port for, and what would cause it to leak? Thanks,
Colby.

If it's the hole I'm thinking about, its to let water drain out. Take the boot off of the sparkplug and make sure its tight. If oil is leaking out, you might have a loose spark plug leaking oil???

**2fun** · #3 11-30-2008, 11:20 PM

BTW, welcome to ATM!

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