Broken/missing plastic wheel on crank mechanism
Hello,
Unforutnately, the nylon wheel on the end of the operator arm isn't replaceable. Depending on the length of your operator arm, you could have something like the 13-1/2" 39-013 or 9-1/2" 39-027E bronze operators. Review the images below compared to your assembly. Depending on which operator you need, the compatible tracks can be found under the related items section of the product page. Thanks for posting.