k and b outboard
Try giving it a good throw each time you launch it. The Flex cable must be kept well GREASED at all times!!!! If the cable housing sleeve is worn replace it. Maybe you got a batch of defective flex shafts...... GREASE the *&^%$#^* out of EVERYTHING in the lower unit!!!! If the fex shafts look like they have any defects they probably do. The whole Flex shaft should look nice, and neatly, and tighly wound. If you see any spots on it that don't look like that, it's defective, or it's starting to come undone from the time you have put on it already............Also make sure the engine is running in the correct direction BEFORE you put in the water!!! If you put your hand down by the prop, ( NOT TOO CLOSE!! ), you should feel some air coming from it. If you don't feel any air, the engine is running backwards. The flexshafts are only designed to transmit torque in the forward direction. The leads on your starter motor may have to be connected to the field battery backwards from what seems normal, to make this correct dierction of rotation happen. Also you may try raising the engine out the water more. The prop may be to deep in the water. Only the bottom half of the prop is supposed to be in the water when your boats is up on step at full speed. I,d reccomend octura X438, X440, or X442 props as a starting point. Do NOT use a plastic prop!!!!, even if thats what it came with! They do NOT work on gas motors!