How to check crank

[AdLY jet smash]

How do i know if the cranks installed properly?

['O'Verse]

With the cylinder off. Check to make sure the gap on either side of the crank inside the cases is as close to the same as possible. Make sure it spins freely without noticeable friction or resistance. Also make sure there's not a lot of side to side play in the conrod. All signs of a improperly installed crank. Next check the seals, threads, and woodruff key are all in place.