S40 yellowed pipe = running lean?

 The Suzuki S40 (Savage LS650) I'm considering,
its pipe is yellowed for about a foot or so down
from the exhaust port with a few small blue patches.
Is it running too lean (and hot)?

Is this a problem considering the long oil feed line
to the upper cyl. The bike has 4,000 km on it.

Buying this bike would stretch me a bit finanically,
but I like it's funky sound and feel.

TIA, Sean_Q_

 Sean wrote:

You are implying that one comes out of the factory any way OTHER than
extremely lean?

 
:Is this a problem considering the long oil feed line
:to the upper cyl. The bike has 4,000 km on it.

It's running lean. Probably no damage. They set 'em that way at the
factory.
--

 Years & years ago, my dad and I were working on my BSA 350 single.  I
decided it was running too rich, so Dad suggested we move the carb
needle down one click and lean it out.  I hopped on the bike and rode
it around the block to see if it felt any different.  When I came
back, Dad came running up to me to warn me.  The exhaust header was
glowing red!  I'd say that was too lean!  Discoloring exhaust pipes,
-every- motorcycle does that.

 

In addition to the other replies, what nobody seems to have asked is
this:

Is it the stock header?

The Japanese tend to make their chromed headers double-skinned, so they
don't discolour from the heat. Aftermarket exhaust makers use
single-skinned pipes, and they do.



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