Automatic Clutch Inspection - HYOSUNG MS3 250 Sercie Manual

2-25 PERIODIC MAINTENANCE
AUTOMATIC CLUTCH INSPEC-
TION
● These motorcycles are equipped with an automat-
ic clutch and variable ratio belt drive transmission.
The engagement of the clutch is governed by
engine RPMs and centrifugal mechanism located
in the clutch.
● To insure proper performance and longer lifetime
of the clutch assembly it is essential that the
clutch engages smoothly and gradually. The fol-
lowing inspections must be performed :
▣ ▣ INITIAL ENGAGEMENT INSPECTION
● Warm up the engine to normal operating tempera-
ture.
● Lift and support the side cover with the side cover
stay. (Refer to page 2-2)
● Connect the engine tachometer to the high-ten-
sion cord ① .
● Seated on the motorcycle with the motorcycle on
level ground, increase the engine RPMs slowly
and note the RPM at which the motorcycle begins
to move forward.
Engagement rpm
Engagement rpm
Engine tachometer : 09900-26006
▣ ▣ CLUTCH "LOCK-UP" INSPECTION
● Perform this inspection to determine if the clutch is
engaging fully and not slipping.
● Apply the front and rear brakes as firm as possi-
ble.
● Briefly open the throttle fully and note the maxi-
mum engine RPMs sustained during the test
cycle.
CAUTION
Do not apply fully power for more than 3 seconds
or damage to the clutch or engine may occur.
Lock-up rpm
Lock-up rpm
1,800 ~ 2,400 rpm
3,600 ~ 4,200 rpm
2,300 ~ 2,900 rpm
4,100 ~ 4,700 rpm
①