Clutch cable needs adjustment and Clutch helper probably needs cleaning and lubrication. Very easy to do.
When properly adjusted it is smooth as silk and engages at the middle of travel.
It is a cable clutch so inclined to be heavier than our G50 brothers. But my clutch and my buddy's recently serviced clutch is perfect for our 915 trans. He has a '86
Overtime and use the helper needs cleaning and lube. Properly adjust cable will be fine for a long period of time.
Jim