Loosen sprocket on the Engine, Part No. K.75 by slackening off the nut, and then give a smart blow on the end of the spindle using the ends of two spanners to support the sprocket while the blow is given. This detaches the sprocket from the end of the taper shaft. Now turn the Engine round until the piston is just 1/32" before the top on the up stroke with both the valves shut, this is the firing position. Now set the Contact Breaker fully retard, turn the magneto round until the points are just breaking. With the armature spindle held in this position, tighten up the nut to lock the sprocket K.75. For correct magneto timing for K.T.T., machines with different fuels refer to page 11 Check the timing to see that everything is correct.