I have a Gravely zt1740 Model# 915044 that had a Kohler engine Model # sv530s on it. I changed the engine to a Kohler cv624s (specs 65578 Ser.# 3104603241) twin engine with a piggyback starter #s on it are (255 098 09 and wi53044 and 1045 5513) but had to cut the harness ends now I have to bobcat them as the old harnesses did not match each other. The Gravely zt1740 have 4 wires coming from it that worked the old engine colors are: white w/blk stripe, yellow w/blk stripe, violet and a brown w/white stripe. The newer motor has 6 wires coming from it and they are: 2 reds, violet, white, green and blue. I would like for you to teach me how to put each wire from the mower to the engine so it can work. I tried the schematics as I am not adversed in that technique. I pray that this is enough info and thanks for your time and concerns.