Answer
Mar 25, 2025 - 05:48 PM
Yep, it does. This Yamaha 40HP and 50HP 2-stroke outboard manual includes the manufacturer's engine rebuild procedures. It walks you through disassembly, inspection, and reassembly of the powerhead, including removing the cylinder head, pistons, crankshaft, and connecting rods. You’ll get clear specs for ring gaps, bearing clearances, torque values, and timing setup, plus tips on how to measure wear and decide what needs replacing.
So if you're planning to freshen up a tired motor or doing a full tear-down, this manual has all you need to do it properly.
