Thrust Bearing D2421
This bearing is found on later model units at the thrust nut coupler.
Here is an example of the coupler that this bearing works with.
Installation tip: Take note of the direction of the thrust bearing installed in the crank system. The thrust bearing needs to face in the proper direction for the system to operate correctly. If the bearing is installed backwards, the system will be difficult to crank. The proper installation has the open / smaller surface of the bearing facing against the base of the thrust nut. This allows it to spin freely when the system is compressed.
Measurements are 2" wide, 1/2" tall, 7/8" center.
Part number 4720D2421