Common signs include a loud squealing noise from the engine bay (especially during startup or acceleration)
it is recommended to inspect the impeller annually and replace it every 2-3 years or 200-300 operating hours
turning the shaft clockwise to help seat the blades correctly inside the housing
If you frequently use fuel from portable tanks or operate in dusty environments
Water Pump Impeller – Fits Johnson/Evinrude 2-4 HP (Replaces 433935, 396852) 60-70HP Common signs include a loudProduct Details This Water Pump Impeller is designed for Johnson Evinrude 2 stroke 2, 2. 5, 3, 3. 5, and 4 HP outboards, including Ultra and Excel models from 19872006. It is a critical component for maintaining your engine's cooling system to prevent overheating. This part serves as a direct replacement for Johnson Evinrude part numbers 433935, 433915, 396852, 767407, and 500332, and interchanges with Sierra Marine 18 3015. Engineered for direct OEM