Hi can anyone help, I brought a project scooter, it starts 1st time, every time off the kick start and runs & rides brill but .......... it won't start off the button. I have put a brand new battery on (fully charged before fitting), new spark plug, new starter motor, new HT lead & coil. ECU wiring looked corroded so have stripped, soldered & put heat shrink on to protect from water. I have taken the sparkplug back out and put it on chassis when cranking but no spark. When I press the starter button the scooter makes a high pitched whirring noise but the engine isn't turning over. Any advice on next steps greatly appreciated
The whirring noise is caused because the starter motor pinion has fallen out of position. To put it back into position, take the gearbox cover off and put it back into position. When in position, the starter motor should engage with the crankshaft and turn the engine over