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Riding lawn mower problem Jack 08-04-2007
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Posted by Paul Franklin on August 4, 2007, 9:57 pm
On Sat, 04 Aug 2007 21:19:00 GMT, jplasater@NOSPAMjuno.com (Jack)
wrote:

>I have a Poulan Pro riding lawn mower. It has just started having a
>problem that I need help diagnosing. It is some kind of a fuel
>problem and is related to the position of the mower while cutting. My
>land is sloped and, when cutting the following happens.
>If I am cutting across the slope and my left side is on the downhill
>side of the slope, the mower gets plenty of gas and works perfectly.
>If I am cutting across the slope and my right side is on the downhill
>slope, it slows down and seems to lack power. It almost slows to a
>stop. The fuel pump is mounted on the left side of the engine. Any
>thoughts about what is going on will be appreciated. THanks

If your carb has a float, it could be leaky. A little gas in the
float might make it heavy enough to starve the engine of gas when the
engine is sloped the right (wrong) way with respect to the float
hinge.

I've always thought it was safer to mow a slope up and down unless
it's a very gentle slope....

HTH,

Paul F.



Posted by Meat Plow on August 5, 2007, 10:57 am
On Sat, 04 Aug 2007 21:57:24 -0400, Paul Franklin wrote:

> On Sat, 04 Aug 2007 21:19:00 GMT, jplasater@NOSPAMjuno.com (Jack)
> wrote:
>
>>I have a Poulan Pro riding lawn mower. It has just started having a
>>problem that I need help diagnosing. It is some kind of a fuel
>>problem and is related to the position of the mower while cutting. My
>>land is sloped and, when cutting the following happens.
>>If I am cutting across the slope and my left side is on the downhill
>>side of the slope, the mower gets plenty of gas and works perfectly.
>>If I am cutting across the slope and my right side is on the downhill
>>slope, it slows down and seems to lack power. It almost slows to a
>>stop. The fuel pump is mounted on the left side of the engine. Any
>>thoughts about what is going on will be appreciated. THanks
>
> If your carb has a float, it could be leaky. A little gas in the
> float might make it heavy enough to starve the engine of gas when the
> engine is sloped the right (wrong) way with respect to the float
> hinge.

a heavy float will cause the needle valve to dump more fuel in the bowl


Posted by on August 4, 2007, 10:17 pm
On Aug 4, 3:19 pm, jplasa...@NOSPAMjuno.com (Jack) wrote:
> I have a Poulan Pro riding lawn mower. It has just started having a
> problem that I need help diagnosing. It is some kind of a fuel
> problem and is related to the position of the mower while cutting. My
> land is sloped and, when cutting the following happens.
> If I am cutting across the slope and my left side is on the downhill
> side of the slope, the mower gets plenty of gas and works perfectly.
> If I am cutting across the slope and my right side is on the downhill
> slope, it slows down and seems to lack power. It almost slows to a
> stop. The fuel pump is mounted on the left side of the engine. Any
> thoughts about what is going on will be appreciated. THanks


If your tractor has a Kohler twin engine you do have a pulse fuel
pump. Make ABSOLUTELY sure you replaced the fuel filter with the
correct Kohler OEM part. There have been numerous posts and reports
about problems after a fuel filter change when NOT using the correct
Kohler fuel filter. fuel filters may look similar but thwey have
different filtering characteristics and flow rates.

You can check here for the right one...
http://www.perr.com/cgi-bin/shopper.cgi?search=action&category=KOH3&keywords=all


Posted by Kyle Boatright on August 5, 2007, 8:46 am

>I have a Poulan Pro riding lawn mower. It has just started having a
> problem that I need help diagnosing. It is some kind of a fuel
> problem and is related to the position of the mower while cutting. My
> land is sloped and, when cutting the following happens.
> If I am cutting across the slope and my left side is on the downhill
> side of the slope, the mower gets plenty of gas and works perfectly.
> If I am cutting across the slope and my right side is on the downhill
> slope, it slows down and seems to lack power. It almost slows to a
> stop. The fuel pump is mounted on the left side of the engine. Any
> thoughts about what is going on will be appreciated. THanks

I had this problem when water had gotten into the fuel tank on my Honda. The
Honda's tank has a slight depression located away from the fuel pick-up. The
depression is there to collect water and other crap that gets into the tank.

However, once the depression was full of water, the water would spill out of
the depression when the mower was on steep slopes, and get into the fuel
line feeding the carb.

KB



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