Starter Solenoid Relay – Fits Mercury/Mariner Outboard 115-250 HP (Replaces 89-817109A1, 89-817109A2, 89-817109A3) Hydro-Gear Install the new housing and

Install the new housing and torque the bolts to the manufacturer's specification

28" (79mm × 58mm)

or an incorrect fuel-air mixture that a rebuild can correct

The new impeller seems larger than the pump housing

or reversing

Starter Solenoid Relay – Fits Mercury/Mariner Outboard 115-250 HP (Replaces 89-817109A1, 89-817109A2, 89-817109A3) Hydro-Gear Install the new housing andProduct Details This Starter Solenoid Relay is designed for a wide range of Mercury and Mariner outboard engines from the 1990s to 2000s, covering 40 HP to 250 HP models. It is engineered as a direct fit replacement to ensure reliable starting performance. It serves as an interchange for several part numbers, including Mercury 89 817109A1, 89 817109A2, 89 817109A3, Sierra 18 5834, and Arco SW109, among others. Engineered for direct replacement.