Having the correct fit between chain and anchor winch chain wheel is critical to correct operation. Fit right, as in the photo above, and the chain strips easily coming in and runs out smoothly. If the fit is wrong, the chain will stick in both directions, and tend to build up twists. Chain wheels are also subject to wear, after which the chain does not fit well. After five cruising seasons with the FPB 83 Wind Horse we have just replaced the chain wheel.