Small Engines (Lawn Mowers, etc.): Lawnmower carb question, groove side, digital pix

Question
I have recently acquired an OLD Swisher Ride King mower with a Tecumseh 8 HP engine.  When I got it, it did not run as it had been sitting for several years, but I was able to get it running.  Now, it runs good, but after I get done mowing and let it sit with the engine off, it leaks gas through the air filter.  I am sure that the problem is float/float needle valve related - I have replaced the old brass float with a plastic one as the brass one was taking on gas, and have replaced the needle valve and seat as well.  In the post below, there is mention of installing the seat groove side "down" - is that "down" as in groove side down into the hole?  Or "down" as in groove side facing toward the bowl (with needle valve coming into it)?  I installed it in the latter manner, and adjusted the float, but it still leaks?  Mine is a little different as it runs and doesn't die, doesn't have a primer, etc., but I have to get the leak taken care of.  My latest attempt that I have yet to try is bending the float tab so that the float is slightly lower in the bowl in hopes that when it raises, it will push the needle valve farther into the seat.

Thanks!

Question
My sister gave us a Sears Craftsmean 6.0hp push mower.  It's been sitting in their yard for quite a while, unused, but still looking almost new.

We put gas in it and started it up, it shut down almost immediately.  Gas is also coming out of the primer button, to the point there's no more gas in the tank.

Before I chuck this, is there anything you may be able to suggest as an easy and inexpesive fix, or should we now look for a new lawn mower?  

THANKS!!!

Get the answer below

Answer
Most likely the inlet needle, seat and float needs to be replaced.  These parts should cost less than $10 at you local mower repair shop.

You will need to remove the carb.  Pay attention to the connecting links...draw a picture or take a digital pix as you remove the carb.

Dis-assemble the carb and install the new parts.  Remove the old inlet needle seat with a dental tool or pick.  Install the new inlet needle set with the GROOVE side down.

If you have an air compressor I would blow out all the carb orfices.

This should get it going.
Eric  

Answer
The groove goes down into the hole.  You may need to polish the metal where the seat sits.  I use a thin wooden dowel with a piece of rubber glued to the end and polishing compound for this.

The float must be flat with the base of the carb when turned upside down or it won't work properly.  When you replaced the needle and seat, did you use the proper kit or did you have to make do because the original parts weren't available?