Although it doesn't sound like a crank seal to me, a good way to test the
crank seals (at least on the PTO end) is to idle the motor and spray some
WD-40 toward the seal. If' it's leaking, the idle will be affected.
As a starting point, I'd remove the jets just to find out their size. If
they are 260's, that may be a tad rich. To begin to set idle, I'd set both
mixture screws (idle and main) to 1.5 turns from bottom. That is a good
starting point.
Any further than that and I'd recommend a good book on the topic.
Dave Gill
----- Original Message -----
From: "Lee Tilton" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Monday, January 15, 2007 8:52 AM
Subject: [F500] Running Rich - What is most likely problem?
According to the previous owner's notes, the jets are 260. Weather down
here right now is mid 70's, high humidity.
I will play with the idle adjustment first. Any tips for a good starting
point? My big drawback is I have no tach so I can't tell what the RPMs
are. I know, poor way to run a garage.
If it is the crank seal, then I will just drop in the fresh rebuilt motor
I have on the shelf.
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