Subtopic	Posts		Updated
	Archive through March 9, 2001	1
	Archive through April 21, 2001	3

By Kevin Watson (Kevin) on Unrecorded Date: Edit

I've had this problem with my new Conquest.
Changed the fuel filter and electric fuel pump and it still happens under stress.
Will change the spark plugs next.
My dealer tells me today that they have had a few new machines that the float level is set too low and they had to be adjusted.

By Alfred Cushman on Unrecorded Date: Edit

What Carb are you running?

By liflod (Liflod) on Unrecorded Date: Edit

The way I have my fuel setup on my Attex is the fuel pump is mounted higher than the carbuerator and I have a clear plastic fuel filter going down to the carb. This way if the fuel pump starves for fuel going up a hill, there is some fuel held in the fuel filter that will gravity feed the carb. Also if you run out of fuel, you will be able to just look at the filter and know it. I also have a filter at the tank which is hanging vertical so it holds some fuel in it also.

By Kevin Watson (Kevin) on Unrecorded Date: Edit

I don't know what carb it is on my Conquest but it's the 20HP liquid cooled Kawasaki engine.

By Alfred Cushman on Unrecorded Date: Edit

Kevin, you have a Mukuni Carb on your FD 611 20hp Kawasaki, it should be "bullet proof". The electric Fuel Pump should be a Facet 1 1/2-3 1/2lb, NAPA # 610-1052. Mount the Pump in a "flood" position, down by the Tank, these Pumps would rather push than pull.

By Kevin Watson (Kevin) on Unrecorded Date: Edit

Alfred;
Thank you for your interest in this matter.
The part number on the electric fuel pump is 49040-2065.
I'll give your suggestion a try and mount it below the fuel tank.
Thanks again.

By BrettBBonner on Unrecorded Date: Edit

Hi -

I thought I had several "vapor lock" failures on a 18HP Vanguard 1992 MaxIV. It usually happened on hot days "under stress." It wasn't the fuel pumps (I replaced it twice). It was trash from the fuel covering the carb jet when I bounced a lot.

Even though I cleaned the tank and use perservative, the trash would still appear. A year later, it would happen again.

Finally, I started using a fuel cap with a screw vent opening. That solved the problem. It appears that every day the tank heats and cools, something that gunks up gass gets sucked out of the atmosphere into the gas. That gunk eventually ends up in the fuel bowl. I think it is just moisture and it basically settles in the fuel bowl.

Now the Briggs is quite reliable.

By Kevin Watson (Kevin) on Unrecorded Date: Edit

Just an update ...
My problem was a loose valve and a bad coil.
Runs good now!