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Posted by platapus03 on July 17, 2006, 8:55 pm
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> I have a 1996 John Deere 14PS push mower with a 5.5 HP Briggs &
> Stratton Sabre
> engine. Last weekend after I finshed mowing the lawn, I noticed gas
> drips on the deck under the air cleaner housing. When I opened the
> housing, the bottom part of the filter element was soaked with gas.
> This model has a float carb with no adjusting screws or choke and no
> throttle control, but it does have a primer bulb. I cleaned the deck up
> and no more gas leaked out while it wasn't running.
>
> I took the carb apart, and it didn't have any dirt or sludge in the
> bowl, so I gave it a quick clean with mineral spirits (didn't have carb
> cleaner) and replaced the float valve and seat then reassembled it with
> new gaskets. I put in a new filter element and mowed half of my yard
> before I noticed that the gas was dripping from the air cleaner again.
>
> Just an observation, but the little nib in the center of the primer
> bulb has a hole in it. I'm not sure whether this is normal or even if
> not whether it is relevant to the problem. I've had it suggested to me
> that perhaps the intake valve isn't seating properly, such that the
> airflow in the carb throat might momentarily reverse during the
> compression stroke. Any ideas?
>
> Mike
Did you ensure the float tang was adjusted correctly before assembly?
Some primer bulbs have a hole in the center- if it's symmetrical, don't
worry about it. If it's a tear, replace it.
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