Mercury – 300 Hour Maintenance Kit | FourStroke Service Package | Complete Engine Care Components | 8M0120837 Yamaha-F90A-2016 while the jet needles and

while the jet needles and float restore proper fuel metering

It smooths out the idle

When you fire the boat up in the spring

clean oil changes every time

Connects directly to SmartCraft for real-time data transfer

Mercury – 300 Hour Maintenance Kit | FourStroke Service Package | Complete Engine Care Components | 8M0120837 Yamaha-F90A-2016 while the jet needles andMercury 8 9. 9 HP EFI 300 Hour Maintenance Kit FourStroke Service Package Complete Engine Care Components 8M0120837 Overview Theres a special kind of pride that comes from owning a small FourStroke Mercury outboard. These engines arent loud or flashytheyre quiet workhorses that faithfully push you across glassy coves, help you troll the shallows, or carry you to that tucked away spot only a few people know about. But even the most reliable outboard