How to Troubleshoot a Motorcycle Transmission
- 1). Place the gears in neutral to stop the flow of power from the engine to the wheels.
- 2). Check the engine rotation by pushing the starter button and listening for the engine to turn over.
- 3). Drive forward, monitoring the degree of resistance you meet from the foot pedal as you shift through the gears. Problems with hard shifting can be attributed to an improperly adjusted clutch, dirty transmission oil, poor alignment of the counter-shaft and main shaft, damaged shift forks or a damaged shift drum.
- 4). Listen for any abnormal noises coming from the gears, such as grinding, squealing or screeching. Any sounds out of the ordinary should be investigated immediately as these can suggest a broken gear or worn bearing.
- 5). Check the tachometer: if the gauge is moving at a faster interval than it normally does, it is a sign that your engine is not being regulated properly by the transmission.
- 6). Shift up and down if the gear suddenly changes. If you are unable to control the gear by shifting up or down, this is what is known as slipping out of gear. Many main components can cause the transmission to slip out of gear, including the shifting linkage, the shifting mechanism, shift forks, the detent, the shift drum, a worn main, countershaft splines, gear dogs and finally the gears themselves.