Explorer GT 50, Service And Maintenance Manual

Page: 36 / 112

39
Automatic clutch inspection
The scooter is equipped with an automatic clutch and
variable ratio belt drive transmission. The engagement of the
clutch is governed by engine RMPS and centrifugal
mechanism located in the clutch.
To insure proper performance and long lifespan of the clutch,
it is essentiall that the clutch engages smoothly and gradually.
Two inspection checks must be performed to thoroughly
check the operation of the drivetrain. Follow the procedures
listed.
1
᧪
Inspect initial engagement
Warm up the scooter to normal operating temperature.
Remove the right frame side cover.
Connect an electric tachmeter to the connecting portion of the
magneto lead wire (black with red tracer).
Seated on the scooter with the scooter on level ground,
increase the engine RPMs slowly and note the RPM at which
the scooter begins to move forward.
Tachometer
Standard 2900r/min
tolerance
s
300r/min
2
᧪
Clutch “LOCK-UP” inspection
Perform the inspection to determine if the clutch is
engaging fully and not slipping.
Warm the engine to normal operating temperatures.
Connect the electric tachomter to the magneto lead wire.
Apply the rear brake as firm as possible.
Briefly open the throttle fully and note the maximum engine
RPMs sustained during the test cycle.
CAUTION:
Do not apply full power for more than 10 seconds or
damage to the clutch or engine may occur.
LOCK-UP R/MIN
Standard 5800r/min
Tolerance s
400r/min