Two .8966 or .9467 cu. in. engines are precisely located in the bored mount to give the correct gear mesh. The four flat head screws visible between both head pipes tightly clamp both front ends in place. The two set screws between the flat head screws are jack screws which allow the front ends to slip easily into the mount. Precise allignment of the engine lugs & the mount lugs is done in a setup master to insure perfect alignment of both.
