Hello eBike tuner. I want to show you how to replace the original 14 teeth front chainring through a 20 teeth chainring. So you can drive faster with the same cadence. You need a 6mm hex driver. A crank puller. And a chain tool. You need a spider tool, the Bosch Classic spider tool doesn’t fit. And a 32mm wrench. Crank puller… Now you see the chainring. The spider tool fits now. Turn the spider tool to the right to open. Loose the chain. Mount the new chainring. Hold the pedal and turn the wrench to the left to close. The problem is, that the chain is too short now.