A service interval in a brochure is written for someone who rides on Sundays. Your bikes go out every day the weather is good, sometimes twice. The interval is not wrong. Your calendar is shorter than theirs. Follow the maker's schedule for anything they measured, especially on an e-bike, and then add a check that happens every morning you hire. I am not going to invent a kilometre number. Shimano, Bosch, SRAM and a city bike from a supermarket do not share one. The number on the hanger tag, or in the dealer manual, is the number. If you don't have it, ask the supplier before the season, not when a guest is waiting. Before the first hire of the day Tyres. Not only flat. Cracked sidewalls, and a pressure that matches the load you just promised, including a child seat if you fit them. Brakes. The lever should feel like a lever, not a sponge, and it should not come back to the grip. Pads with material left. If the brakes are hydraulic and the lever is wrong, that bike does not go out. The brake post is the reason, including why you don't top it up from a random bottle. The chain. Rust you can see, a stiff link, skipping under pedalling. Gears that won't find one sprocket. A hire guest will not "just avoid that gear." They will stand at the side of the path and call you. Bolts you can see without a stand: stem, seat post, rack, mudguard, wheel skewers or thru-axles. A wobble is a no. On an e-bike, the battery charged for the tour you are about to sell, not for the tour you wish they had booked. The display comes on. The connector clicks, it doesn't just rest there. If the screen is dead, swap the bike and then diagnose. The guest's hour is not the diagnosis. When the display dies is that morning. Helmets. Cracks, missing pads, a strap that doesn't close. A cracked helmet is not a spare. What can wait until Tuesday A noise you have heard for a week and have already decided is the mudguard. A gear that is slightly slow and still hits every sprocket. A clean and a lube if you missed it yesterday and the drivetrain is not grinding. Write it down anyway. Hire fleets die from the list nobody wrote, not from the one dramatic failure. Anything that affects stopping, steering, or the motor cutting out does not wait until Tuesday. Who does the work A morning check is the counter. A bleed, a wheel build, a motor that throws a code you don't recognise: that is the workshop, yours or the one you pay. The brand's manual is the procedure. A general article, this one included, is not a service manual, and it should not be used as one. The point of the morning is to decide "out" or "not out." The point of the workshop is to make "not out" into "out" without guessing.