2002 Kawasaki Prairie 650 - Speedometer failed when the exhaust got hot in the summer which also caused the 4x4 to not run and the engine to run rough. Researching the internet I was pretty sure the new speed sensor would fix everything and it did! I wasn't sure if there was oil on the other side of the sensor so I just gave it a try. Yes, he will squirt oil on you. Change it when changing the oil or tip the car sideways (careful with assist, these guys are very heavy). Or just prepare to quickly unplug and plug in and plan to catch some oil and clean up the mess.