What is the simple wiring method to start a motorcycle?
3 Answers
The simple wiring method to start a motorcycle is as follows: find the two wire ends of the ignition device and touch them together to start the motorcycle. Below is the working principle of a motorcycle: 1. Intake: At this time, the intake valve opens, the piston moves downward, and the mixture of gasoline and air is sucked into the cylinder. 2. Compression: At this time, both the intake valve and exhaust valve close, the piston moves upward, and the mixture is compressed. 3. Combustion: When the mixture is compressed to its minimum, the spark plug sparks to ignite the mixture, and the pressure generated by combustion pushes the piston downward and drives the crankshaft to rotate. 4. Exhaust: When the piston moves to its lowest point, the exhaust valve opens to discharge the exhaust gas, and the piston continues to move upward to expel the remaining exhaust gas.
When encountering a motorcycle with a dead battery, I usually start it by jump-starting. The steps are quite simple: First, park the donor car and the dead motorcycle side by side, and turn off both vehicles. Take out the jumper cables, and attach the red clamp to the positive terminal (marked with a +) of the donor car's battery first, then to the positive terminal of the dead motorcycle. Attach the black clamp to the negative terminal of the donor car, but do not directly clamp the other end to the negative terminal of the dead battery! Instead, find a clean metal part of the motorcycle frame to clamp it to, to avoid sparks. Then, start the donor car and gently rev the engine to maintain around 1500 RPM. At this point, try starting the dead motorcycle—it usually starts on the first attempt. After success, remove the black clamp first (starting from the dead motorcycle), then the red clamp. Remember to let the motorcycle idle for 10 minutes or ride a few kilometers to recharge the battery. Last week, I helped my neighbor start his vintage bike that had been sitting for six months this way, and the whole process took less than five minutes. Be especially careful not to reverse the connections with an old battery, as it could damage the circuit board.
Last time when camping in the suburbs, my motorcycle suddenly ran out of battery, but I successfully jump-started it using a friend's car on the spot. Remember these key points: both engines must be turned off, and using thick copper-core jumper cables is safer. First, connect the positive terminals: attach the red clamp from the car battery's + terminal to the motorcycle battery's + terminal. For the negative terminal, follow two steps: first, attach the black clamp to the car's - terminal, then the other end must be connected to a metal screw position on the motorcycle frame (avoiding the battery), which prevents hydrogen gas explosion. Start the car and press the accelerator to keep the engine running at around 2000 RPM to maintain power supply. At this point, turn the ignition key all the way, and usually, the bike will start within two seconds. After starting, don't rush to remove the cables; let it idle for two to three minutes before disconnecting in the order of black then red. That time, after removing the cables, I rode ten kilometers on mountain roads, and the battery recovered its charge. If the battery frequently loses power, it might be aging and need replacement—jump-starting is just an emergency solution.
