For testing purposes, you fill the float bowl through the bowl vent (3/16 brass tube sticking up at an angle in the air horn). Use an eyedropper, or a ketchup or mustard squeeze bottle that has been emptied and cleaned.
Jon.
Good carburetion is fuelish hot air The most expensive carburetor is the wrong one you attempt to modify. If you truly believe "one size fits all," try walking a mile in your spouse's shoes! The Carburetor Shop
