HYOSUNG Aquil GV650 Service Manual page 77

ENGINE 3-34
◉ CLUTCH SPRING FREE LENGTH
Measure the free length of each clutch spring using
vernier calipers. If any spring is not within the service
limit, replace all of the spring.
Service limit
Clutch spring
free length
51 mm (2.008 in)
Vernier calipers : 09900-20101
◉ CLUTCH RELEASE BEARING
Inspect the clutch release bearing for any abnormality,
especially cracks. When removing the bearing from the
clutch, decide whether it can be reused or if it should be
replaced.
Smooth engagement and disengagement of the clutch
depends on the condition of this bearing.
◉ PRIMARY DRIVEN GEAR
Inspect the primary driven gear bearing for any damage.
If any abnormal condition are found, replace the primary
driven gear.
◉ OIL PUMP
Turn the oil pump shaft and check that rotation is
smooth. If any abnormal condition is found, replace the
oil pump with new one.