Is the CFMoto 250SR water-cooled or air-cooled?
3 Answers
CFMoto 250SR is water-cooled. Single-cylinder water-cooled four-stroke engine: The CFMoto 250SR is equipped with a single-cylinder water-cooled four-stroke engine, which has a displacement of 249.2cc. The maximum power output of this engine is 20.5kw. Most motorcycles use four-stroke gasoline engines, and their working principles are essentially the same as those of car engines. Strokes: A four-stroke gasoline engine operates with four strokes: intake stroke, compression stroke, power stroke, and exhaust stroke. During the intake stroke, the intake valve opens, and the piston moves downward to draw in the air-fuel mixture. During the compression stroke, both the intake and exhaust valves close, and the piston moves upward to compress the air-fuel mixture. During the power stroke, both valves remain closed, and the spark plug ignites the compressed air-fuel mixture in the cylinder. The combustion of the mixture forces the piston downward, generating power. During the exhaust stroke, the exhaust valve opens, and the piston moves upward to expel the combustion gases.
I've been riding this CFMoto 250SR for almost two years and know very well it's a liquid-cooled engine. It's quite common to see a single-cylinder 250cc engine paired with a liquid cooling system - liquid cooling offers significantly better heat dissipation efficiency than air cooling, preventing overheating during summer mountain rides or traffic jams. Special attention needs to be paid to coolant and cooling circuit maintenance. Last time, my friend's bike almost seized its engine due to coolant leakage from the water pump. The OEM radiator fan's activation timing is well designed - as long as you don't push it too hard for extended periods, the cooling capacity is completely adequate. Those auxiliary cooling fins commonly sold at aftermarket shops are actually unnecessary to install.
As a frequent short-distance commuter, I really appreciate the stability of the 250SR's liquid cooling system. The advantage of liquid-cooled engines over air-cooled ones mainly lies in sustained performance output, especially during frequent stop-and-go traffic at traffic lights where the temperature gauge remains steady. I remember the manual recommends changing the coolant every 8,000 kilometers and regularly cleaning the radiator fins of willow catkins and dust. During the last maintenance, the technician found the auxiliary tank was low on fluid and mentioned there might be a slight leak in the pipes. Such minor issues with the liquid cooling system should be detected and addressed early.
