Yamaha driven clutches are better known as a secondary clutch. This clutch attaches to the rear end and is used to propel your golf cart to higher speeds. The clutch is closed until the motor turns over. The Yamaha clutch then opens while the primary clutch closes. The secondary clutch gives your cart the speed you desire. You will notice this clutch won't be performing properly if your carts speed decreases or if the clutch does not close completely on the belt. We carry Comet and replacement clutches that fit Yamaha G1, G2, G9, G14, G16, G19, G22, and G29 The Drive gas golf cart models.