Yamaha - C50 2-Stroke 100 Hour Service Maintenance Kit - 2000-2001 This Yamaha 100-hour service maintenance kit services the following Yamaha outboard models: C50 2-Stroke (2000-2001) Kit Includes: 1 x 61N-24563-10-00 - Yamaha - Primary Fuel Filter 2 x 90430-08003-00 - Yamaha - Outboard Lower Unit Drain Gasket 1 x ACC-GEARL-UB-QT - Yamaha - Marine Gear Lube 3 x NGK #BR7HS - 10 - 33-828942 Spark Plugs