Tri-Fuel that use an adapter installed between the carburetor and the air cleaner and do not require drilling the carburetor. Includes a regulator with a push pin primer (purge pin) for purging and priming as a standard feature. No mounting bracket is needed for the regulator. It has two mounting lugs and will allow it to fit on just about any generator by drilling two 1/4" holes in the frame (as shown in the picture on the right). There are also two threaded holes underneath for bottom mounting (shown below on the left and center pictures). The engine regulator has a 3/4" FNPT, female fuel pipe inlet, mounting lugs and mounting hardware, fuel delivery parts for use at the carburetor, hose, clamps, and other fittings for compete operation (less hook-up hoses of course). Again, these kits are for engines that are considered attended and used completely, exclusively, outdoors.