Your lawnmower is an essential tool. You use it to maintain your grass and make your yard look nice. They gave you a handy little pamphlet that tells you exactly when and how to maintain it when you bought it. We would be willing to be that you did not get the same courtesy when you bought your golf cart. Either because you purchased it from an individual seller who didn't know or a dealer who wants you back in the shop for maintenance. We want you to keep that thing running as long as possible. Service is for every season of the year that you run it. Make sure to include parts like the NGK Spark Plug for some EZGOs and Yamahas.This golf cart plug is something you can install alone in about 10 minutes. You are going to need a special tool called a spark plug socket. It is lined explicitly as not to damage the plug. Call an expert at Buggies Unlimited for your Yamaha and EZGO parts and accessory needs if you have any questions.