I've got a 1994 GT6000 with the 20hp Kohler MV20S engine, it's got a WALBRO carb with #52 053 71 stamped on one side of the flange and WHG 98 3473 on the other. I'm having some difficulty finding any info at all on this carb.
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Some of the pictures of similar carbs that I found looks like it should be covered by a welch plug. It looks like the recess area for the plug on your picture is missing. LIke it has been ground off or something. From the location is looks like it is the drilled area for the float bowl vent and probably doesn't have anything that goes in it other then just being covered.
#9
dougand3
I saw a pic of an old Walbro like this. Hole had a fuel solenoid in it, which I'd bet is NLA.
#10
tom3
Might be a block off for the float bowl vent, emissions thing?
So, I've got the old girl running rather well. As I pointed out b4 this tractor has a Walbro carb, my question is, how do I know if I've got a fixed jet carb or an adjustable jet carb?
adjustable jet carbs have adjuster screws poking out the sides.
Fixed jet carbs have nothing there but a throttle stop to set idle speed.
Early in the days of no adjustable carbs they just fitted plugs over the top of the screws.