new motor help

Discussion in 'General Questions' started by magicmikephx, Mar 20, 2014.

  1. magicmikephx

    magicmikephx New Member

    I just put on a motor on my bike and everything looks good but my back tire will not turn freely like it should. It is my first motor and it is new any ideas ?

  2. bluegoatwoods

    bluegoatwoods Well-Known Member

    Well....let's see here. It would help if you gave more info. Type of engine and drive train, for instance.

    But let me assume that what you have is a 2 stroke w/chain drive to the left hand side of the rear wheel since that's the most common type.

    Start off by pulling the clutch handle/lever in. (In other words, 'dis-engage the clutch') Can you now pedal the bike around like you would have before you installed a motor?

    If the answer is yes, then prop the bike up some way that allows the rear wheel to spin. You might balance it somewhat over on it's side, resting on the kickstand. Or you might hang the bike from something above using a rope. Now let the clutch handle/lever out. (In other words, 'engage the clutch.) Then remove the spark plug. Now spin the rear wheel. Does it turn without much resistance. And can you hear the piston moving up and down in the cylinder?

    The answers to these questions will give some good clues as to what's going on. So come on back once you've done these little experiments. Others, more knowledgeable than I, will have found this thread by then. You'll surely find your answer shortly after that.

    Best of luck.
  3. V 35

    V 35 Member

    Just guessing, but I'd guess the chain is too tight . Try moving the rear wheel a bit forward, or re-adjust tensioner . The pedal side chain can also be too tight, causing the bind. I agree with Blue Goat Woods, if your bike is tuned right, you should be able to crank pedal with only * a little * extra effort. Once chains are sorted out, double check clutch adjustments.