This is a comprehensive factory service manual that covers Mercruiser Sterndrives from MC 120 to 260, specifically for the years 1978 to 1982 with the part number 90-86137. It encompasses all the essential information for servicing and repairing your Mercruiser engine or Stern Drive unit. The manual is meticulously indexed and bookmarked, ensuring convenient and efficient navigation for both professional mechanics and DIY enthusiasts.
