1. Worn out clutch disk need to be replaced after long service life.
2. Half clutch driving or overload for long period of time causing theclutch disk "burnt".
3. Clutch release fork failure causing the clutch could not be released
Suggest to repair at workshop, repair procedure as below:
1. Dismantle the transmission assembly, take apart the clutch disk.
2. Inspect the worn level of the clutch disk, replace it if the rivet is exposed.
3. Inspect the worn level of the clutch pressure plate, replace it if the surface has obvious uneven mark.
4. Check the clutch release bearing and replace if necessary.