An ordinary motorcycle typically weighs between 150 kg and 250 kg, depending primarily on factors such as engine displacement, model type, and brand. Generally, a motorcycle consists of seven main components: the engine, transmission system, running gear, control and braking system, cabin/cargo compartment, electrical system, and instrument panel. Below are some motorcycle purchasing tips: Appearance inspection: Check whether the paintwork is glossy and evenly applied, assess the paint quality, inspect the brightness of chrome-plated parts for any exposed damage or spots, examine welding joints for smoothness, verify the surface finish of machined components, ensure all parts are intact and undamaged, confirm proper alignment of front and rear shock absorbers, check if the frame is straight, verify wheel alignment, inspect front and rear axles/bearings for damage, and confirm the completeness of spare parts, onboard tools, user manual, maintenance manual, and certificate. Engine inspection: After completing all preparations, the engine should start quickly and reliably. Cold starts at normal temperatures should take no more than 15 seconds (excluding auxiliary time), with no more than 3 kick-start attempts. After starting, let it run at medium-low speed for 30 minutes - all components should remain cool to the touch, idle speed should be stable without abnormal noises, and operation should be smooth under load. Using a tachometer, measure whether maximum speed can exceed rated RPM. When abruptly accelerating during warm-up at no-load condition, engine speed should respond accordingly. Test ride inspection: When conditions permit, conduct a road test over a certain distance, focusing on checking transmission and drivetrain noises for normal operation, whether the engine overheats, if power delivery is smooth, whether the clutch fully disengages without dragging and engages smoothly, if gear shift pedals operate flexibly without jamming or gear slippage, whether handlebar controls are light, flexible and precise, if brakes are reliable and noise-free, and whether throttle cables and various switches function effectively.
