I replaced a customer's FC-9000 left crank.

This is a photo from before the replacement.
Though I don't actually have a photo from after.

The adhesive on the wafer-shell construction is peeling apart, so

when you push down on the crank

it does this.

Soft Crank Buddy

This is a photo from before the replacement.
Though I don't actually have a photo from after.

The adhesive on the wafer-shell construction is peeling apart, so

when you push down on the crank

it does this.

Soft Crank Buddy