Outboard Engine Thermostat – Fits Yamaha 75-250 HP 4-Stroke (Replaces 67F-12411-00, 67F-12411-01-00, 6CB-12411-00-00, Sierra 18-3632, Suzuki 17670-90J00) 20HP making sure the vanes are

making sure the vanes are oriented correctly (typically by turning the driveshaft clockwise while pushing down)

Squeeze the primer bulb until firm to pressurize the system

Confirm your engine model in the table below

It includes the wearable components inside the housing: the impeller

a reduced stream of water from the exhaust

Outboard Engine Thermostat – Fits Yamaha 75-250 HP 4-Stroke (Replaces 67F-12411-00, 67F-12411-01-00, 6CB-12411-00-00, Sierra 18-3632, Suzuki 17670-90J00) 20HP making sure the vanes areProduct Details This replacement Outboard Engine Thermostat Fits Yamaha 75 250 HP 4 Stroke (Replaces 67F 12411 00, 67F 12411 01 00) is engineered to regulate engine temperature for optimal performance in Yamaha 4 Stroke models from 75 HP to 250 HP (including F series and VF series SHO) manufactured from 2001 to the present. It serves as a direct replacement for Yamaha part numbers 67F 12411 00 00, 67F 12411 01 00, and 6CB 12411 00 00, as well as