The clutches on these engines are not all the same.
I have talked to several dealers who have been importing these for years, and they tell me that some batches will have decent cutches, (not too hard to pull the lever). If your clutch is easy to pull, you got lucky!
The majority are overly difficult to operate due to design and manufacturing flaws in what I refer to as the clutch actuator assembly.
The problem I've had is that the pin lengths, (The pin that goes into the sprocket jackshaft), vary!
I didn't realize this until I had shipped about 20 units and got comments back.
Out of the 20, 5 didn't work! The cam would just spin in the housing...in other words the pin was too short.
At that point I stopped shipping, and explained to everyone who was on order what was going on.
I have since made up extra pins to include in each kit. The installation instructions have been revised as well.
The 15 others had no problems and are completely happy.
Pablo: FYI, I had one customer install my part with your shifter kit...he loves it. And YES you will need a return spring.
All orders of the revised product will be shipping today!
Best Regards,
Jim
Bike motor parts