If you are the proud owner of a 1990 Yamaha lawn tractor you are in an elite band of brothers! Yamaha only made its incredibly versatile and universally loved lawn tractors for a short period of time, so treat yours with respect. How? Start by only using genuine OEM parts to service your 1990 Yamaha lawn tractor. Partzilla.com carries hundreds of OEM parts for Yamaha lawn tractors, all at deeply discounted prices. Use our online parts diagrams to find the parts you need and we'll ship them to your door. Price match guarantee on all OEM parts!