Reconnect all hoses and refill the cooling system
A visual inspection of the old impeller may reveal cracked
} } Brand Part Number Mercury 46-8M0061040 Mercury 8M0061040
For MerCruiser Alpha One Gen 2 drives
It should be snug but not overly tight
Water Pump Repair Kit – Fits Yamaha F75, F80, F90, F100 (Replaces 67F-W0078-00-00, 18-3451, 8M6012802) 4.3HP Reconnect all hoses and refillProduct Details This Water Pump Repair Kit provides everything needed for a complete service of the water pump on Yamaha 4 Stroke 75100 HP outboards (19992017). It is compatible with Yamaha F75, F75A, F80, F90, F90A, and F100 engine models, restoring cooling system performance and reliability. This kit is a direct interchange for Yamaha 67F W0078 00 00, Sierra 18 3451, and Quicksilver 8M6012802. Engineered for direct OEM replacement installation.