90-818177-2 Service Manual – MerCruiser Alpha One Gen II Stern Drive Units (#14)

The 90-818177-2 Service Manual (Alpha One Generation II) is a factory‑issued guide covering MerCruiser stern drive units, printed in August 1997 under part number 90‑818177‑2. It provides mechanical technicians with comprehensive rebuild and maintenance instructions.

Model Coverage & Serial Range

This manual supports Alpha One Generation II stern drives produced from approximately 1991 onward. It’s the successor to Generation I models and covers the drive systems found across multiple years and variants.

Technical Content & Service Procedures

The manual spans approximately 673 pages, packed with OEM-level content, including:

• Detailed exploded diagrams and assembly views

• Systematic instructions for disassembly, inspection, assembly, and adjustments

• Torque specifications, lubrication routines, maintenance schedules, and best-practice tips

• System-specific servicing guides: midsection, power trim, gimbal housing, and lower unit procedures

Condition & Format

This is a pre-owned, original factory manual. It shows typical shop wear such as light marks or binder scuffs, but remains wholly intact and legible—ideal for professional or DIY servicing tasks.

At Arizona Outboard Dismantlers, we specialize in genuine and aftermarket marine parts that keep you on the water. This 90-818177-2 Service Manual delivers precise, factory-approved repair and maintenance reference for the Alpha One Generation II stern drives.