What engine model is on it.

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Here is a link that might be useful: Kohler

The points are opened by a small push rod that is moved by a lobe on the camshaft. The best way to check the ignition timing on that engine is by looking through a small hole in the blower housing in the front of the machine. Use a flash light and turn the flywheel by hand until the "S" stamp in the flywheel is visible in the sight hole. Now check the position of the points to see if they are opened or closed. Make a white mark on the flywheel at this point. Check the points and see if the are opened or closed. Clearance should be set at .020. If the engine will run,you can use a timing light to set the timing by looking through the hole in the front and adjusting the point setting to get the timing set correctly.

As an added note. Because the points are operated by the camshaft, and the camshaft turns at 1/2 the rate of crankshaft (2 revolutions of crank to one revolution of cam), you must be certain that the cylinder is actually on the compression stroke (and not the exhaust stroke) whenever doing a check or adjustment of the points gap. The remark, "I checked the timing and it is 180 degrees off" makes me wonder if the crank is being rotated to the proper part of the 4-stroke cycle when the points are being checked. The "S" mark on the flywheel will will be visible 2 times as the 4 stroke cycle is sequenced, but only one of the two positions is correct for checking and adjusting the points. The "S" will be visible during the compression stroke and the exhaust stroke, but the camshaft will affect operation of the points ONLY during the compression stroke. And in case it needs to be stated, the spark occurs at the moment the points OPEN......not when they close.