It seems most motors are a black box that is not user serviceable. Are there any that actually are? Having to take the bike to the dealer everything is a no go.
Interesting bike I saw today at Berkshire Cycles. By Fulgur, an Italian brand: 20KG listed weight • Full Fat 90Nm motor by Polini - 160mm @extremeshox ERA Fork - 160mm rear travel with @extremeshox Storia Coil V3 - Modular internal battery 504Wh and you can add another 125Wh internal extender...