Re: John Deere B(1949)

Posted by Jon C- Florida on August 05, 2004 at 03:12:57 from (66.209.40.192):

In Reply to: John Deere B(1949) posted by Dave59634 on August 04, 2004 at 20:00:12:

Dave - actually its a common problem with this tractor. TimFL, is correct, in my opinion as I have had several B's abd A's with the exact same problem.

The only thing holding the gravity feed fuel back is a little needle valve seat in the float bowl. If the float is sticky, or has a leak or the valve seat has the smallest of crud on it, or needle misaligned, the gas will get through.

As it slowly gets through, it goes in the carb throat, into the rocker arm/valve cover, and through any valve that is partly open into one or both cylinders.

Then, through the rings it will go, trickling slowly into your crankcase until the fuel tank is dry. So if you run the tractor every day, you may not notice it, but after a week or so, the cumulitive effect will surprise you when you have miraculously "made oil".

You need to fix the carb. And you need to get into the habit of shutting the fuel off at the tank every time.....assuming the shut off works well.....which should also be checked.

Drain the oil/filter and start fresh....the tractor will be fine.

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