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Align the crankshaft and camshaft timing marks according to your engine's service manual
25XD 25 2-Stroke 1980–1983 47-85089T7 AUS ser# 8073158 & Up Mercury/Mariner 25 (3-Cyl
including models from 75 HP to 225 HP manufactured from 1992 and later
began production in 1991
Water Pump Repair Kit – Fits Yamaha 2-Stroke 40-50HP (Replaces 6H4-W0078-00-00, Sierra 18-3429) Detroit Diesel Align the crankshaft and camshaftProduct Details This Water Pump Repair Kit Fits Yamaha 2 Stroke 40 50HP provides the essential components to restore your outboard's cooling system performance. It is designed for specific Yamaha 40HP (19841994), 50HP (19841987), Pro Series 50 (19871990), and P50 (19951996) models. The kit serves as a direct replacement for multiple OEM and aftermarket part numbers, including Yamaha 6H4 W0078 00 00, 6H4 W0078 01 00, 6H4 W0078 A0 00, and Sierra 18
