Hand Fuel Primer Bulb – Fits Mercury, Yamaha, Johnson/Evinrude (Replaces 9001080A, 50073805, 73805) Yamaha Ensure the pump arm or

Ensure the pump arm or lever is correctly aligned with the engine's camshaft or pushrod

What's wrong

ensuring the vanes are oriented in the same direction as the old one (typically turning with engine rotation)

look for blockages in cooling passages

1 x Trim Sender Switch

Hand Fuel Primer Bulb – Fits Mercury, Yamaha, Johnson/Evinrude (Replaces 9001080A, 50073805, 73805) Yamaha Ensure the pump arm orProduct Details This high quality Hand Fuel Primer Bulb Fits Marine Boat Outboard Motors (Replaces 9001080A, 3 8") is designed for most marine vessels with 3 8" (10mm) fuel lines. It is suitable for outboard motors from major brands like Mercury, Yamaha, and Johnson Evinrude that use low pressure carbureted fuel systems. It serves as a direct replacement for multiple OEM and aftermarket parts, including Mercury 9001080A and Johnson Evinrude 50073805,