HYOSUNG Prima Service Manual page 44

1. CLUTCH-IN INSPECTION
Warm up the motorcycle to normal operating tempera-
ture.
Remove the right frame side cover.
Connect an engine tachometer to the engine.
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.
Engine tachometer : 09900 - 26006
Clutch-in RPM
2. CLUTCH TIGHT INSPECTION
Grip the front and rear brake lever fully, and measure
the engine RPM when open the throttle.
Warm the engine to normal operating temperatures.
Connect an engine tachometer to the engine.
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 3 seconds
or damage to the clutch or engine may occur.
Clutch tight RPM
If the engine RPM does not coincide with the specified
RPM range, then disassemble the clutch.
Clutch shoe - inspect the shoes visually for chips, crack-
ing, uneven wear and burning, and check the thickness of
the shoes with the vernier calipers. If the thickness is less
than the following service limit, replace them as a set.
Clutch springs - visually inspect the clutch springs for
stretched coils or broken coils.
Clutch shoe thickness
Standard 3,600 rpm
± 200 rpm
Tolerance
Standard 6,000 rpm
± 200 rpm
Tolerance
Service limit 2.0 mm
ENGINE 3-16