Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 247Get this manual
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Table of Contents Page Specifications 6-1 Special Tools 62 Gearhousing (Driveshaft) 6-4 Gearhousing (Propeller Shaft) 6-6 General Service Recommendations 6-8 Bearings 68 Seals 6-8 Draining and Inspect