Hi,
Make sure your clutch is disengaging completely . My clutch slips a little when I fist let it out but you can tell the difference . If it's not fully disengaging with the leaver travel you have now you'll have to remove the right side engine cover and adjust the star nut on the clutch pressure plate .
The engine does add some resistance to your peddling but it should not be trying to turn the motor.
Hope this helps,
Mark